US969801A - Calculating-machine. - Google Patents

Description

E. H. PALMER,

CALGULATING MACHINE.

APPLICTION FILED s291227, 1905.

Patented Sept. 13, 1910.

' SHEETS-SHEET l.

E. H. PALMER.

GALGULATING MACHINE.

' APPLIUATION FILED SEPT. 27, 1905. 969,801 Y Patented Sept. 13, 1910.

4 SHEETS-SHEET 2.

E. H. PALMER. GALCULATING MACHINE,

APPLIGATIUN FILED SH12?, 1905,

969,801, Patented Sept. 13, 1910.

4 SHEETS-SHEET 3.

E. H. PALMER.

UALGULATING MACHINE. APPLICATION FILED SEPT. 2v, 1905.

969,801 Patented Sept. 13,1910.

4 SHEETS-SHEET 4.

EDWARD H. PALMER, F READING, MASSACHUSETTS.

CALCULAIING-MACHINE.

Specication of Letters Patent. 'Patented Sept. 13, 1910.

Application fled- September 27, 1905. Serial No. 280,307.

To all whom'it may concern:

Be it known that I, EDWARD H. PELMER, of Reading, in the county of Middlesex and State of Massachusetts, have invented cer* .tain new and useful Improvements in Calculating-Machines, of which the following is 'a' specification.

This invention relates to manually-operated calculating machines and particu-i larly to mechanism adapted to be connected to any of the well-known types of typewriting machines and to be operated by the number keys of the latter, although the machine lse is adapted to be constructed for independent use.

The objects are to provide a machine or mechanism capable of ready attachment. to and disengagement from a typewriting machine without any reconstruction or re-arrangement of the latter, and which is adapted to register and exhibit the results of the addition or subtraction of a series of numbers simultaneously with the printing or writing of such numbers on a sheet of paper held by the carriage of the typewriting machine.

Further objects are to secure accuracy in the results; uniformity in the effort required for indicating or registering each number in the calculating mechanism regardless of the size or amount of such number, and in the amount of depression of the keys required for this result; simplicity of construction; capability of rapid operation so that the numbers may be registered and added or subtracted by the mechanism as rapidly as they can be written by the most expert typewriter operator; capability of actual reversal of the number-bearing disks or vwheels so that subtraction may be directly performed and mistakes automatically corrected, and provision for readily disconnecting the calculating mechanism from the numberkeys without actually relmoving the same from the typewritin-g machine, and for automatic disconnection of the same by operation of the shift key when the upper case letters or symbols operated by the same keys as the numbers are written.

Of the accompanying dra.wings,-Figure 1 .represents an embodiment of the invention as applied toa typewriting machine of the type known as the Remington, No. 7 sufiicient of the typewriting machine being shown to indicate the manner of connecting the calculating mechanism thereto. Fig. 2

c represents a front elevation of the calculating'mechanisni, a portion of the typewriting machine also being shown in section on line 2-2 of Fig. l. Fig. 3 represents a view similar to Fig. l, on an enlarged scale, some of the parts being shown in section, the section being taken on line 3 3 of Fig. 2. Fig.

3a and Fig; 3b represent respectively a front elevation, and a plan view of the numbercarrying mechanism. Fig. 4 represents a plan view of a portion of the same. Figs. 5 and 6 represent views showing in elevation details of the mechanism. Fig. 7 represents a perspective view of one of the connecting pinions which communicate motion from one of the number disks to the adjacent lefthand ones. Fig. 8 represents an elevation of the left-hand side of one of the number disks. Fig. 9 represents in elevation, two adjacent number disks. Fig. 10 represents an elevation of the pawl and ratchet device preventing retraction of the main shaft. Figs. 11, l2 and 13 represent respectively an axial section, and elevations as seen from the front and right of the machine, of one of the devicesfor communicating motion to the main shaft proportioned to the number indicated. Fig. 14 represents a detail view from the left of Fig. Q, showing the upper or auxiliary frame and the connections for rotating the shaft on which all of the number wheels or indicators are loosely mounted.

The same reference characters indicate the same parts in all the figures.

This calculating mechanism may be ap plied to any typewriting machine by making slight adaptations and modifications in the frame and connections suitable for the particular machine fromvthe construction and arrangement here shown, which is particularly adapted to the Remington N o. 7, but in any case essentials of the mechanism are the same. In the embodiment here showm'the apparatus comprises main side frame. plates l 1 connected together by suitable transverse rods 2 and various shafts hereinafter described, which support parts of t-he mechanism. This mechanism and frame plates are compactly and securely held together, constituting a separate independent device which may be operated independently, and has also capabilities of attachment to the frame of a. typethe frame plates l are widened and have` writing machine. The lower portions of forwardly-projecting arms 3, alsoV downwardly-projectinglugs4 adapted to engage the forward edge of the table projection 5 of a typewriting machine, and also having lugs 6 arranged to project downward at the rear of this table. In the pro jeetions 6 are =adjustable set-screws 7 adapted 'to be screwed up Vagainst the rear of the table 5 to clamp the calculating mechanism to the machine.`

upon the side plates projections 8 carrying which is adapted to be connected to one of Athe key levers 13 14 of the type-writing machine. The connection is made by means of links 15 each of which 1s connectedat one end to one of the bell-cranks, while its other end is pivoted to a collar 16 detachably clamped upon one of the key levers. The upwardly-projecting 'arm of each of the Vbell-cranks has pivoted to it a connecting `rod 17 which is 4'engaged with a lever 18 pivoted upon a transverse shaft 19, the ends of which -are held in the side plates ofi the frame.

Mounted upon this shaft 19 are springs 2O each of vwhich engages'a pin 21 on one of the levers 18, tending to vhold these levers in the position designated by 18a,

'with one of its arms bearing against a cross rodl 22, but when the key levers are depressed toy strike a numeral on thev paper vcarried by the typewriter carriage, the key levers then being m the position occupied by '13, the bell cranks are turned in lefthand rotation and the levers 18 moved in the-opposite direction 'of rotation, carrying theirupper arms to the right. l

Each of the levers-18 carries on its upper lend an inclined guideway orl cam portion 23, containing a. cam groove 24, (Fig' 2) into which .projects a stud 25 having a trundle roll 26 carried by a member 27 hava collar portion 28 embracing the transyerse rod or shaft 29, the ends of which are fixed 'n the sideplates 1 of the frame. This member 27 is provided with -two rigid arms 30 31, the former of, which carries a twoarmed fork extending into a groove 32 formed in a hub 33 of a. disk 34, lwhich has a feather-and-slot connection with a rotatable shaft 35, mounted in bearings in the frame.-

The feather-and-slot connection as is obvious, causes the disk 34 to rotate with shaft 35 but permits it to be moved longitudinally upon the shaftV VThe arm 31 car- There are also termed ries a laterally-extending projection 36 on -its end and also a pivoted pawl or tooth 37 located adjacent the projection 36 but separated therefrom by a small space. A Vspring 3S carried by the pivot 39 of the pawl bears against the hub or collar portion 28vof the member 27 and tends to hold the pawl in the position shown in Fig. 5.v

The shaft is kept continuouslyrotating by any suitable motor, as an electric motor, which may be connected with the shaft-in any1 manner desired or by a spring, compressed air, cr any other desired means, and

the disks v34 continuously rotate'withthe shaft. Each of the disks carries one or more pins or studs 40 projecting therefrom laterally toward the left in Fig; 2.

Pivotally supported upon a fixed shaft 41 above the shaft 35 are arms 42 of which there are nine, corresponding in number to each of the other parts described. The arms 42 carry connected to them gear segments 43 of varying sizes which mesh with gear segments 44 mounted on the shaft 45 which runs from side to side of the calculating mechanism frame. The segments or disks 44 are loose on shaft 45 and each carries a projecting arm 93 (Figs. 12 and 13) to which is pivoted a pawl 92. Beside each of said arms is a ratchet wheel 91 fixed to the shaft, with the teeth of which the pawl 92 engages. A spring 921 is provided for holding the pawl in mesh with the ratchet. llVhen one of the number keys is operated rotary motion of an amount proportional to the numeral on such key is given by the mechanism above described, to the shaft, and

therefrom such motion iscommunicated to the registering and indicating mechanism located above the same and connected to the frame members. lntegrally formed with the segments 44 are sleeves 441 upon which are externally mounted split collars 94 adapted to be clamped in any position of adjustment by clamping screws 443. Each of these collars carries a projecting arm or lug 101 adj ustable therewith for a purpose hereinafter described. f

The shaft 45 has a single connection by which its motion may be communicated to each of the numbenbearing wheels or index elements, of which there may be any number desired. This connection .consists of a gear 4G (Figs. 1, 42 and 4) splineduponthe shaft 45 so Athat it is compelled to rotate with the shaft but is free to move thereon, and is adapted to mesh either with a pinion 47 iixedrto a shaft 4S cr with an idler 49 on a stud 50 which meshes with a second gear 5l fixed to the same shaft as that upon which the gear 47 is mounted. The shaft 48 has fixed upon it gears 52 of which there ,are as many as there are number wheels 53 upon the. shaft 54 and of these there may be as.`

many as aredesired, the number being limited only by the size of the typewriting machine, which'would of course permit more number wheels than would be required in ordinary use. In the embodiment of the invention villustrated there are nine number wheels of which the two at the right of Figs.4

2 and 4 may be used to designate `hundredths and tenths, or cents, the third one from the right designating units, the next tens, the next hundreds, the.l nekt three indicating units, tens and hundreds of thousands respectively, and the one at the extreme left indicating millions. The number wheels are inclosed in a casing or coveringl 55 in which 'is formed a slot 56 ot' sutticient width to show one of the numerals on each disk, this slot serving as' an indicator by which the amountrepresented 'by the amountshowing on the disks may be read.

The shaft 54bearing the number disks and shaft 48 are mounted in an auxiliary frame having side plates 57 58 and suitably connected to the main frame.

Upon the shaftl 4S are pivotally mounted holders 59 (Fig. 3) equal in number to the disks and gears 52, each ot which has three arms 60 61 62. The arm 61 carries pivoted" to it a pinion 63 constant-ly in mesh with the gear 52 and mounted in the same plane with |a toothed portion or pinion 64 formed or connected on the right-hand side of one of the number disks, each of the number disks being so provided. On its left-hand face, each of the number disks except the extreme left-hand one, carries two teeth 65 projecting laterally into close proximityto the next adjacent disk (Figs. 8 and 9). The arms 60 of the holders 59lcarry pinions 66 which may be called carrying' wheels, shown in detail in Fig. 7. These pinions have an` even number'` of teeth and each alternate tooth 67 is formed with less than the Width of the other teeth 68. As the-'pinions ap ear in F igs. 4 and 7, the.teeth 67 project om the left side ofthe hub, the right-hand portions of these teeth being removed. The

number of teeth of the pinions is preferably six and they are so' spaced that two adjacent `teeth of full width may rest upon the periphery of the annular shoulder 69 formed at' the left of each of the number disks, while the tooth 67 midway between projects into a space between two of the teeth on theportion 64 of the next left-hand disk and extends laterally into the space between the number wheels and in the path of mothat when during the operation of addition` tion of teeth These teeth are mounted upon the number disks in such ba position the numeral 9, or during the operation of subtraction, the figure O of any disk is adjacent the` indicator slot, one of the teeth 65 comesinto position to enga'ge that tooth 67 of the small pinion which is in ennext number carried by it at the indicator.

The teeth 68 of `full width carried by pinions 66 bearing against. the periphery of the annular portion 69 prevent the pinion from turningas the right-'hand'number disk is rotated except when one of the teeth 65 engages a tooth 67, when the notch 70 left hetween teeth 65 permits one of the wide teeth (SS to enter and so allows the pinion to rotate and move'the number wheel at the left.

At the right of the number wheels ris a smooth-surfaced disk 691 (Figs. 2 and 4) located in the same position relatively to the right-hand wheel that the shoulder 69 of any wheel bears with respect to' the next adjacent wheel to the left. This disk 'serves tohold two-ot' the wide teeth 66 on the right-hand carrying` wheel whenthat carryingl wheel is in mesh with the right-hand number .wheel and locks the number wheel in the salne manner as the other number -wheels are locked by their respective carry- 'wliee-ls, which are 'also locks for the number wheels, is an important featureV otl the machine, as 1t avoids the necesslty of-detents for preventing` overthrow ot' the number wheels, thereby relievingthem ot' friction, and permits all ot' them to be turned at once with so little resistance, and at the same time with so exact a motion, that any number of such wheels may be' used without limit. This is a result not achieved in a practical manner by any other machine and one which has long been sought by bankinjrhouses and other concerns dealin; in large sums.' f

The pinions 66 are carried by the arms 60 so as to engage two adjacent number wheels and the distance between these pinions and thepinion '63 is .such that when the holder 59 is rotated to bring; either pinion into engagement with the number disks,

' the other is moved out of engagement therewith. When it is the pinion 66 which is moved away from the disks, one of its outer teeth is engaged between two transverse pins 7l (Fig. 3) as soon as its` inner tooth leaws its engagement with the number wheels to hold it in proper position so that it lnay enter in YViroperengagement with 'the teeth of the disks as soon as it is allowed lo move toward them again. A spring 72 is mounted upon the rods 7l and bears upon a por:

05 gagement with the toothed portion 6i ot' the tion ot arm 66, tending; normally to retain la? Y the holder with the pinion 66 engaging theA ynumber disks vand the inion 63 out of en# gagement therewith. i s the holder pivots upon shaft 48, pinion 63 always remains in mesh with gear 52. Mechanism consisting of a shaft 73` carrying adjustable cams 74 is lpjrovided for moving the holders at the proper time to bring the pinions. 63 into mesh one at a time with the nu1nber-bear1ng disks. and at the same time to move the corresponding carryingpinions 6G out of en'- gagement with the number wheels as the carriage is advanced preparatory. to the ac` tuation of 'the number keys, so that when the carriage is in position to receive the im.

pression of a figure in its propel' place in a number, the appropriate number nLheel will. -be connected up to glve the proper valueto that figure in the result being calculated.

'The shaft 73 is' voperated by the typewriter carriage through an adjustable rack 75 (Figs. 2 and 4)4 formed upon a sleeve 76 which is mounted movably ona cross-bar 77 4carried at the rear of the 4typewriter carriage and adapted to be clamped in any po-` sition by a set-screw 78. The rack 1s arranged to mesh with a gear 'segment 79 fon` is correspondingly rotated. It will be vobserved that the cams 74 carried by this shaft are equal in number to the holders 59, and- Athat they are spaced laterally yso that each comes in the plane of 'one of the holdersI and in position to strike a pin 621 on the' holder. rlhey are also adjusted rotarily in a generally helical-line aboutthe shaft `so that the projections of no two are in'alinement. The shape of each cam is tile same and is clearly shown in Fig. 3. Each cam l is cylindrical throughout the greater portion of its extent but is formed with a single com` paratively abrupt projection; The cams be-v ing arranged on the shaft in the manner I above described, as, the shaft, is rotated, it

is evident that -they will come into engagement successively with the arms 62v of'the holders 59, the left-handfcam coming into contact first with the left-hand holder, therebymoving its pinion G3 into engagement with the disk arranged'toindicate numbers in the millions column. It will beobserved that the calculating mechanism is not renderedv operative until a cam causes one of the number wheels to be thrown intorgearv and that this only takes place when the rack V 75 engages and turns the gear 79. -Conv65 sequently the point on the sheet at which numbers to be added or subtracted may be written is determined by the location of the rack. Usually as in making out bills, etc., the numbers to be added are written at the rightof the sheet, andthe rack will then be placed correspondingly on the right-hand portion ofthe cross-bar, but it maybe desirable to calculate numbers written at the extreme left, and for this purpose the crossbar is made of suiiici'ent extent that the rack may be -set far enough to the. left for the first impression, at the number l space of the machine, :to be capable of actuating any of the numberv wheels. Preferably the cams are arranged so that spaces may be left ,in the written record between the millions and thousands, the thousands andhundreds and the units or dollarsand tenths or Cents so that a period may be put in the last space and commas in the other spaces if desired, so that also the calculating mechanism' will not be operated while the typewriter car'- riageis passing oversuch spae. Such an arrangement as that referred t'o is shown in F ig. 3, where the cam projecting to the leftand to which the numeral 74 is applied, is adapted to actuate the millions disk and between this cam and the`next one below it and to the left is a space equal to the distance moved by the cam projection while the typewriter carriage Vis moving two spaces. The next three cams are adapted to operate the hundred thousands, ten thousands 'and thousands disks respectively, and they are spaced at equal distances apart, this distance corresponding to the amounts moved at each step of the carriage so that when a number is struck and impressed upon the paper the 'calculating mechanism having beenl thorown into gear by the preceding Afmovement of the carriage, is simultaneously operated. Between the-thousands cam and the hundreds cam is another 'space of extra 'width'so that after aspace ora comma has 'been made in the writing, the next actuation of a number key will operate the proper number-indicating disk, Finally between the-cam for throwing into gear the units or dollars disk and .those for connecting up the tenths and hundredths, vor cents disks, is left another space for allowing the insertion of the usual period.

While it is necessary that the spaces between thecam projections should be multiples ofthe distance moved with each step ofthev carriage, the ,precise arrangement described is not necessary, since the cams might be arranged with greater spaces after the millions, the thousands and the units 4than those referred to here, or there might also be left greater spaces between each two numeralsof the-number. e Between the first cam 74l and the last vcam 74 of the series, in rotary arrangementV as seen in Fig.'3, is left a space which comes from right to left as seen in F i0 2 placesihe pawl 37, which being restored to beneath the line of the engaging pins 621 'when the rack is out of gear with the seg-` ment and the cam shaft 1s in a position of rest, to the end that there may be no actuation of any number wheel if the number keys are operated while .the rack is thus disconnecte It is obvious that variations in the dimensions and locations'of the rack 75, and also in the number of such racks used, may be made Without departing from the spirit of the invention, and that more or fewer number wheels than shown, within the limit of the number of spaces or steps of the paper carriage travel may be employed.

Again, by omitting one or more of the cams so that certain of thenumber wheels are never connected up and never operated, parallel columns may be added or subtracted and the results of each separately indicated on the corresponding independent groups of number wheels. l

The manner 1n Whlch the depression of a number key causes the calculating mechanism to operate Will now be described z* When a number key is depressed, one of the levers 18 is moved in right-handed rotation about the pivot shaft 19, thereby moving its upper arm andv thecam portion supported thereon from leftto right, as Seen 1n 1 and 3. As the cam portion is inclined g. .4, its movement just described causes the member-27 through the engagement of stud 25 With the Walls of the `cam, to be moved tothe left, sliding on shaft 29. This movement also through the medium of arm 30 and the fork formed thereon carries one of the disks 34 `to the left, bringing it into such posit-ion that as it is rotated one of its pins 40 will strike and move an armf'142. Normally the arms 42 hang in planesy slightly to the left of the respective disks and members 27, but when the latter are moved to t-he left by actuation of levers 18 as described, the studs 40, are carried into the planes of the respective arms 42 as are also the projections 36 and pawls 37,. The proportions of the parts are such that the studs 40 move the arms 42 far enough so that their laterallyprojecting end portions'85 are carried to the projections 36, which arrest their further motion While the studs Linslide tangentially off from the ends of the arms. In the movement of an arm by engagement with one of the pins, a latch projection 86 (Fig. 6) car! ried at the lower part of projection 85 dislts previous position'. by. the spring 38, engages in rear of the latch 86 and prevents i retraction of the arm 42 until the member 27 has been moved to the right into its inoperative position by the elevation of the number key, When this movement takes place, pawl 37 is moved'laterally out of entgagement with latch 86, leaving the arm lfree to be restored by a spring 87 into normal retracted'position where it bears against a transverse rod 88. When t-he parts 36 37 are in their inoperative position out of engagement 4With arm 42, they are located closely adjacentthe arm so that in being moved into this position they do not release their engagement with the latch on the arm until they'have reached almost the limit of their movement *and the number key has become elevated to almost its normal position. This prevents actuation of the calculating mechanism by premature striking of the key a second time after itl has once been depressed4 and before it has become elevated sutliciently to allow shifting of the carriage a space for permitting the Writing of a second numeral, and also for connecting another number Wheel with the operating mechanism by means of the rack.

The number-bearing keys of the typewriter machine are alll depressed an equal and invariable amount Without regard to the number ivritten by them, and as the arms 42 are all of equal length and identical form, while all of the studs 40 are at the samev distance from the axis of shaft 35, it follows that the segments on shaft 41 are also rotated through the same amount for each number. AHowever, it is necessary that the number Wheels or counters 53 should be turned varying amounts to correspond with the size of the number written, that is, a number wheel should be turned one space 'for the numeral one and so on up to nine spaces when thekey vbearing the numeral 91 is struck. For accomplishingthis result, I provide mechanisms for turning the shaft 45 greater or less amounts, depending on the key which is struck, these mechanisms consisting of gear segments of different pitch and radii. The arm which is moved when the number one key is struck carries a gear segment of very short radius meshing with one carried by shaft 45 of long radius so that a comparatively small amount of rotation is given to shaft 45, which motion is communicated to the number wheels through the gearing previously described, while the arm .which is operated when the number nine' key is depressed carries a gear segment of greater radius, meshing with one of comparatively small radius on shaft 45, so proportioned that the latter shaft is turned through an angle nine times as great as that throughwhich it is turned by the number one mechanism. The intermediate number connections are composed of gear segments on the shaft 41 regularly increasing in radius from 1 to 9, and meshing with coperatin se ments on shaft 45, which are correspon ing yand successively decreased in radial and circumferential extent. It

Will .be understood from the `foregoing that of rotation which is uniform for all, Whatone key on the left.

ever the numbers re resented by them; and that drivers and ollowers are variously proportioned so that varying amounts of rotation, corresponding to the values of the several numbers, are given to shaft and thence to any one of the number wheels. Thereby the construction may be made the simplest possible, troublesome adjustments avoided,4 and certainty of action and accuracy of result secured.

In the Remington typewriting machines, in one type of machine the lower case letter l is used for the numeral one, while in another form of machine a separate number key is provided, but in either case the key which is used for Writing l is at the extreme right of the machine relatively to the other number keys, while the number two key is at the extreme left, theremaini'ng keys being arranged in order up to the number nine key, which is adjacent the number In Figs. 3 and '6, the gear segments-43 44 are operated by the number one key, While the segments 43L 44a are operated by the number nine key and illustrate'the extremes in the proportions of these parts, the other segments being in rear of segments 43a 44a, as seen in Fig.

3, and therefore not appearing in that figure'.

Fig. 6 shows only the mechanisml governed by the number nine key.

Any suitable method and arrangement of gearing may be employed for causing shaft 45 to be turned vcaact multiples of the amount of rotation givento.. it through .the number one key, for the subsequent keys, but

I have found the most convenient and effective arrangement to be to have the segments on shaft' 45- which are operated through the number one and number two keys as portions of forty-eight toothed gears, While the other segments are all-portions of gears which if complete would eachhave twenty-four teeth, 1although the radii of i these segments andl their pitches are different. The movement given by studs 40 to each arm 42 is such as to move each of the .members on shaft 41 through one-eighth of a revolution and' gear; 43 1s so proportioned that it moves segment 44 and sha-ft 45 through one-tw'enty-fourth of a revolution. The other arms and segments move shaft 45 through successively-,increasing 'twenty- .fourths of a revolution until segment 43f;

, when rotated by the-same amount, moves shaft*- 45 through'nine twenty-fourths of a revolution, thereby producing'at the counters ornumber-wheels nine vtin'ies the motion In order'to check the rotation of shaft 45 and prevent it from being carried too farby its momentum, I provide a ratchet-Wheel 9G fast on shaft45 and'mounted adjacent to it a paWl 97 fast on a transverse shaft 98 v and normally held out of engagement with one of the teeth' ofthe ratchet by a spring 99, (see Fig.V 2 and dotted lines in' Figs. -3

and 6). Also'fast to shaft 98 are arms 10() extending Atoward shaft 45 and spaced to correspond with the members-44. Each of the latter carries fanl arm or stud 101 as vpreviously described, projecting outwardly therefrom in position to engage one of the' arms 100 after :the segment has been rotated a 'certain amount.- These projections are arranged at varying 'angles with a xed line so that they w1lly engage the arms 100 v Another ratchet-Wheel 1.02 (Fig.v 10) is mounted fast `upon shaft 45 having' teeth engaged by a vpaWl 103 ivoted on shaft 98, preventing retraction o -shaft 45, and permitting its rotation' only inthe direction in which it is impelled by theratchets 91 and.

segments`44'.

From the foregoing it will be understood that when any .numberkey is depressed, shaft 45 is turned through an amount 'proportionate to the number indicated by the key and is locked in said position as long asA 4the' key remains depressed. Its motion is lthen communicated'throughugear 46 and Aeither the train 'consisting of gears 49 and .51 or the' gear 47 to shaft 48. When gear 46 is jin the position shown in. Figs.Y 2 and 4, it drives shaft 48 through lidler 49 and pinion 51 in-a forward direction orthat dlrection 1n which successive numbers are I added by .the Amechanism but when gear 46 is in engagement directly with gear 47, it

drives shaft 48. in lthe 'opposite-v direction. Topermitiof suchmotion thegear is slidingly `mounted.oufthe'yshaft 4.5. yand held iny `rotative engagement ,therewith by a spline '104. It has its hub 105 formed with a groove 106 or other means by which a suitable shifting leverv or connectlon may be engaged to move it from engagement with one of the gears 47 49 to engagementwith the other.

From shaft 48 movement is com- `municat-ed to the number wheels b y the seing wheel between a disk and-its right-hand neighbor to be. moved out of engagement at the time that any one of the driving pinions G3 is engaged with the disk, the addition may be begun with the extreme leftehand figure of the number to be written, since the particular number disk spaced to correspond with this figure (whether it be the left hand, or million disk, or another) is connected through its pinion G3 with the mechanism operated by the number key by means of the appropriate cam il raising the holder 59, thereby throwing such pinion into gear with the disk and simultaneously throwing out the vcarrying wheel connecting this disk with the number disks at the right. Thereby this yparticular disk is free to be revolved in either direction without affecting the disks to the right and is consequently virtually the same as the tiret wheel `in any train of registering wheels. The same is true of each succeeding wheel to the right as the writing progresses, for the carriage in its movement from right to left opera-tes the cams and thus successvely removes the direct connection of the operating mechanism with the number wheel at the left last engaged, at the same time moving its carrying-wheel into engagement with it and the disk to the right, and connects the remaining number disks, one atter another, with the driving mechanism while disconnecting the carrying wheels tor the several respective disks. Thus whatever number wheel for the moment is connected to the operating mechanism is a first wheel, and all those at the lett` thereotl are connected with it'by the carryii'ig wheels, whereby whenever the number wheel being actuated has brought its nine in addition, or Zero in subt-raction, opposite the indicator slot, t-heneXt actuation ofthe disk will cause the one at the left to be moved, while those at the right will not be disturbed at all, since the carrying Wheel connected to them has been moved out of engagement. Thus, successive figures forming part ot' a number may be added by actuating the proper number wheel, beginning with one at the lett and operating successive ones at the right, and the results aiextreme ready indicated by those at the left will be corrected by the carrying mechanism While the wheels at the right will be unaffected until the last one has been actuated. As the carrying mechanism previously described operates equally for movement of a number wheel in either direction,-this mechanism provides for performing the operation of. subtraction as well as addition. To perform subtraction the gear 4G is simply shifted into engagement with pinion 47,' whereupon the direction of rotation oi the disks when en gaged by their appropriatedriving pinion 63 is reversed. The operation thereupon 1s the same as in addition except that the difterence between two numbers instead of their sum is indicated and only those wheels at the left ot' any number wheel being actuated arc atiected while those at the right remainv stationary. This alsov enables the operator to correctmistakesl for if a wrong numeral has been accidentally struck, the

error can be quickly corrected by temporarily shift-ing the gear 46 into reversing position, ope ating the same key lever to reverse the number wheel and bring it to its previous position, then erasing the incorrect impression on the paper and making the correct impressionand addition. This same reversal for subtraction provides for' the quick return of any or all of the number wheels to zero, when the result indicated by the number wheels will be written on the paper sinniltaneously with the return. of these wheels to the Zero aiiords a check on the work, for it' the result has notv been correctly written the inaccuracy will be indicated, since.' those wheels .trom

which the result has been copied correctly will be at the zero position, while the ones 105 from which the indication is incorrecttv taken will occupy some other positionsyiirom which the amount of the error can be readily determined and easily corrected.

Usually typewriting machines have on the 110 same type-blocks and keys with the numera| also other symbols which are struck whenl the carriage is displaced by the shift key, and in order that the calculating mechanism may -not be disturbed when the depressed to permit vthe other symbols on the number keys to be written, l have provided connections attached to the carriage-shaft mechanism for disconnecting the calculatingl mechanism from the keys. links 17 which communicate motion from the bell-cranks ll 1Q to the arms 1S are detachably engaged with the latter arms by means of notches or open slots 10T, (Fig. 5) each of which is arranged to engage a pin 10S on the -lower end of one ot the arms 18'. As may be seen from Fig. 2, the lower arms of the levers 18 are each -formed with a central opening l09 and two side bars 110 1nto whlch opening and between 130 againY position.' This also 100 shift. key is To this end the with 1,25

l which bars the ends -of the several links 17' are retainedand guided. Fast-on a shaft 111 at opposite sides of the'fra'me are plates 112, (Fig. 3) each of which supports an end of each of the'cross rods v113 114 extending from'side .to-side of the apparatus,the rst bemg above the links 17 While the second is beloW them, each being closely adjacent' thereto. The link 411,5 is pivoted to one of the plates 112 and at itsother end connected to .a rocker 116pvoted to the cross bar 10, Whichrocker by means of a link 117 is connected to a'projecting arm 118 (Fig. 1)

i shift key is released, spring 122, engaging a projection on link 115 moves the latter toward the rear and rotates plates 112 and shaft 111 in the opposite direction, bringing rod 113 to bear on the upper sides of links 17 and causing the latter again to engage the pins 108.l Inorder that th'elinks may be permanently disconnected by hand if desired, the shaft 111 is extended out through one'side of the frame and is provided with an external hand-engaging member 124 which may be turned to bring rod 114 into position-vertically above the shaft. A slot 125 in link 117 at the point ofconnection of the latter With arm 118 permits such movement- Without shifting thetypewriter carriage.

Several of the indicators or number wheels 53 are simultaneously shifted, as

when adding any number such as 6 to a number sueltas 99,999 The action will result in the shifting of these Wheels so'as to show 100,005 As the movement from one number Wheel to another must -bel through the carrying means orV devices (36, there 1s a slight lost motion through said carrying devices Which prevents the numer-V als of the WheelsA 53 showing 1n perfect; almement. To overcome'this obJe'ction, and

to preserve the alinement of the indicators or number wheels, in spite of the liability oflost motion due to the carrying devices, 'I provide means for lrotating the shaft 54 preferably at a speed somewhat greater than, andin the same direction as, the movement of the number wheels on said shaft When the number Wheels are actuated. Asv

has been explained, no number Wheel is rotated excepting When the shaft 48 is actu ated.l A convenient means-for transmitting motion from the shaft 48 to, the' shaft 54 mayl comprise ' pinions 541 and 481 secured on the shafts 54 and 48 respectively, as indicated -in.Fig.' 14. An intermediate pinion i 482 connects the pinions 541 andf48l-so that the shaft 54 will be /rotated Whenever the shaft 48 is actuated, and in the same direc- .tion of rotation as that ofthe shaft 48 and vthat of the number Wheels.

As indicated in Fig. 14, the respective sizes of the pinions -541 and 481 are such that the shaft 54 will be rotated at a higher speed than the shaft- 48. Therefore, Whenever a carrying takes 'place from one numeral wheel or disk to the next, the shaft 54 is rotated in the same direction a's the number wheel or Wheels and faster than they so that insteadof there vbeing a frictional retarding movement of the number wheels, such friction as may exist between the number Wheels 'and the shaft 54 Will tend to advance the number Wheels as far as permitted by the carrying devices.

The number Wheels constitute computing indicators which are movable relatively to each other upon theshaft 54. The pinions 66 constitute the means which carry from one'wheel to another, and they also serve as locks which prevent any movement of a`I` number Wheel beyond the pointto which it is intended that ity shall be shifted. In the embodiment of the invention illustrated, each pinion 6G is mounted'upon an arm 60Y of a holder 59 and when said holder is oscillated, in the manner that has been described, the said' carrying devices and lock GG are shifted so that the connectionbetween'the two adjacent indicators or number Wheels 53 is broken. But for this break of the vconnection it would be impossible to reverse the movement of the number Wheels or indicators when it is desired to effect' a subtraction in order to correct-an erroneous addition. f From the foregoing itswill be seen that I have provided va Calculating machine, including in its construction a plurality of num-I ber-bearing members movable to presentY a number adjacent an indicator. In the'particular embodiment of the inventionillus- `plurality of manually controlled operating members 27, the manual controlv for said 'members 27 being through theikey levers andthe levers 11, links 17 and levers 18. Each of these members 27 when operated as described, causes the registration of a different number by a member or Wheel 53 through the connection described from, the' shaft'35 to the shaft 48. T he shaft`48 constitutes a single driven member, since said is carried by an arm 61 'of the holder 59,

constitute connections between the driven member 48 and its gears, and thenumberbearing members 53.

It will also be understood, that, in the embodiment of the invention illustrated, there is an independent normally inoperative connection between each of the manually controlled members and each ofthe number wheels, because the connection between each pinion 63 and the toothed portion of the respective number-bearing wheels is ,nor-

mally broken so astobe inoperative for the purpose of transmitting movement to a number wheel. Therefore, device hereinbefore described is thrown into or out of gear, the normally inoperative connection referred to is -also reversed in it movement when actuated.

I claim 1. A calculating machine having an indicator, a plurality of number-bearing members, movable to present a number adjacent' the indicator, a single driven member, a plurality of manually-operated members controlling the actionofsaid driven member, each adapted for operation to cause the registration of a different number, and a; plurality of separate connections each connectible with the driven member andone of the number-bearing members and movable transversely of the driven member to make the connection.

2. A calculating machine having an indicator, a plurality of number-bearing members, movable to present a number adjacent the indicator, an independently-driven member, a pluralityv of manually-operated members controlling'the vaction of said driven member, each adapted for operation to cause the registration of a different number, a plurality of separate connections normally out of connection with said number-bearing members, each movable transversely of the driven member to make connection between said-driven member and one of said numberybearing members, and means for 'throwing 1n said connections successively.

3. A calculating machine having a plurality ofnumber wheels, a plurality of manually-controlled members, each adapted to be operated to cause the registration of a different number, a plurality of similar yindependent connecting members between said manually-controlled members vand eachof the number wheels movable transversely of the axes of the latter into and out of operativeconnection, and carrying connections separate from said first connections between of course, controlled as to theirwhen the reversing h -a different number, a single -a plurality of independent normally inop- Iber wheel at the left against all movement.

4. A calculating machine having a plurality of number wheels, a plurality of manually-controlled members, each adapted to be operated to cause the registration cfa different number, a plurality, of similar independent, normally inoperative, connections between said manually-controlled members and each of the number wheels,

connections between each'jof said number wheels and the .next adyacent wheel, and means for throwing into operative position lthe connection between the manually-controlled lmembers and one of said number wheelsand simultaneously throwing out the' connection between said wheel and the vwheel at the rightjthereof.

5. A calculating machine having a plurality of number wheels, a pluralityof manually-controlled members',each adapted to be operated to cause the registration of driven member,

erative connections engaged with said driven member and adapted to be engaged one with each of the number wheels, a reversing device ad-apted to be thrown into and out of .gear for changing the direction of movement ofsaiddriven member, connections between each of said number wheels and the next adjacent wheel, and means for throwing into operative position the connection between the manually-controlled members vso and one of said number wheels and simul- 1 taneously throwing out the connection between said wheel and the wheel at the right thereof, whereby said number wheel maybe moved in either direction. y6. A calculating machine having a plurality of number wheels, a plurality of manually-controlled members, each adapted to be operated to cause the rcgistratioi'i of a different number, a single driven member, a plurality of independent normally inoperative connections engaged with said driven member and adapted to be engaged one with each of the number wheels, connectionsbetween each of said number wheels and the next adjacent wheel, and means for throwing into operative position one at a time the connections between said manually-controlled members and the number wheels and Simultaneously throwing out the connection between the number wheel being opera-tively connectedvand the wheel at the right thereof, whereby each of said wheels may be operated independently. v

A calculating machine having a plurality of number wheels, a plurality of manually-controlled members, each adapted to be operated to cause the registration of a Vdifferent number, independent normally in- ILC,`

operative, connections between said manually-controlled members and each of the number wheels, said connections including amember' adapted. to bethrown into and out of gear for changingthe directionof movement of said wheels, carrying connections between each of said number wheels and the next adjacentwheel, and means for throwsaidshaft and number wheels, whereby the.

wheels may be operated by rotation of the shaft, said driving .means being normally outl of engagement, connections between -adjacent number wheels and normallyin engagement therewith, and means arranged to throw into operative engagement the driving means between the shaft and oneof said number fwheels and simultaneously disconnect the connection between said number whe-el and the adjacent wheel at the right thereof. l

'9.- A calculating machine comprising a Series of number wheels, a single shaft, driving means intermediate said shaft andeacli of said number wheels, whereby the wheels may be operated by rotation of the shaft, said driving means being normally out of engagcn'ient and movable into and out of engagement perpeiidicularly to the axis of said shaft, connections between adjacent.

number wheels and normally in engagement therewith, and means arranged to throw into operative engagement the driving means between the shaft and one of said number wheels, the connection between such number wheel and the next adjacent wheel at the right thereof being connected to said' driving means in such manner as to be moved out of engagement with the number wheel while the driving means-is placed in operative position.

10. A calculating machine comprising ka series of number wheels, a shaft adjacent said Wheels, means connected to turn said shaft proportionately to the amounts of numbers to be indicated, a holder, an intermediate driving connection carried by said holder adapted to be interposed in engagement with said shaft and one of the number wheels, and a .carrying connection mounted on said holder adapted to bc engaged with said number wheel and an adjacent 'number wheel, said holder andV connections being ar- 8; A calculating machine comprising a' se-.

eeaeoi ranged to throw one connection out vof env c Agagement witha lnumber wheel when the other is engaged therewith.

1'1. A calculating machine comprising a4 series of number wheels, av shaft adjacent said wheels, means connected to turn said j shaft proportionately to the amounts of numbers to be indicated, a holder, an intermediate driving' connection carried by said holder adapt-ed to'be interposed in,engage. ment with saidy shaft and one of the-number wheels, anda carrying connection mounted on said vholder adapted to be engaged with' said number wheel and the nextl adjacent number wheel of lower'order', said holder and connections being constructedand rela#` tively arranged so that, when the holder is actuated to bring one of said connections into engagement with a number wheel, the other connection is moved out of engagement 'with t-he wheel.

12. A5' calculating machine comprising'a series of number wheels, a shaft adjacent lsaid wheels, means for turning said shaft proportionately to the amounts of the numbers to be indicated, a holder'carrying an intermediate driving connection adapted to be interposed in engagement with said shaft and one of the numberwhcels, and a second holder carrying anl intermediate driving connection adapted to be placed in engagement with said shaft and another number wheel, a connection carried by said second.`

inemberfarranged to engage said lastnamed number l`wheel and an adjacent number wheel, and means for moving said driving connections successively into operative position.

13. A calculating machine comprising a series off niimber wheels, a shaft adjacent said wheels, means for turning Said shaft proportionately to the amounts of the numbers to be indicated, a holder carrying an intermediate driving connection adapted to be interposed in engagement with said shaft and one of the number wheels, and a second holder carrying an intermediate driving conf' nection adapted to befplac'ed in engagement iio.

with said shaft and another number wheel,

a connection cairiedby said second member arrangedto engage said last-named number wheel and an adjacent number wheel, yielding means tending to hold said driving conncctions out of operative position, and means for moving said driving connections successively into operative position.

14. ln a calculating machine, a plurality of dislrsbcaringeach a series of numbers and each having a toothed portion, a shaft having a plurality of gears, holders movably mounted adjacent the number-bearing disks, a pinion pivoted to each of Said holders, each pinion being in mesh with one of said gears and adapted to engage the toothed portion of one of 'said disks, and connectors carried izoI ` by said holders and arranged each to engage ythe toothed portion ofone of said disks and adapted to be brought in mesh therewith, connectors carried by said holders and arranged each to engage portions of two adjacent disks, springs tending' to hold said pinions out of, and said connectors in, engagement with said disks, and mechanism for moving the pinions and connectors in opposition to the springs.

16. In a calculating machine, a plurality of disks bearing each a series of numbers and each having a toothed portion, a shaft having a plurality of gears, holders movably mounted adjacent the number-bearing disks, a pinion pivoted to each of said holders each pinion being inthe same plane with one of said gears and the toothed portion of one of said disks and adapted to be brought in mesh therewith,` connectors carried by said holders and arranged each to engage portions of two adjacent disks, means engaged with said holders tending to hold them in position with said pinions out of, and said connectors in, engagement, and mechanism for moving the piiiions and connectors in opposition to said holding means.

17. In a calculating machine, a plurality o f disks bearing each a series of numbers and each having a toothed portion, a shaft having a plurality of gears, holders pivotally mounted on said shaft, each of said holders carrying a pinion in the same plane with one of said gears and the toothed portion of one of said disks and mounted for movement to bring the pinion into meshing engagement therewith, yielding means tending to retain said holders with their pinions disconnected from/said disks, and mechanism for moving tlie'liolders to bring the pinions into engagement with the disks.

' 18. -In a calculating machine,a plurality of from one to the other. yielding means tending to retain said holders with their pinions disconnected from said disks and the carrying wheels engaged therewith, and mechanisrn for moving the holders to bring the pinions into engagement with the disks and to move the carrying wheels out of engagement therewith.

19. In combination with'the carriage of a typewriting machine, a calculating attachment for typewriting machines comprising a plurality of number-bearing disks, a shaft, a plurality of intermediate driving connections movable independently into and out-of operative engagement with the shaft and disks, and mechanism adapted to be operated by the typewriter carriage for y placing said several connections successively in such operative engagement.

Q0. In combination with the carriage of a typewriting machine, a calculating attachment for typewriting machines comprising a plurality of number-bearing disks, a shaft, a plurality of intermediate driving connections movable independently into and out of operative engagement with the shaft and disks, and mechanism adapted to be opervated by the typewriter carriage for placing vsaid, several connections successively in such cperative engagement, said mechanism being tormed and arranged to permit movement of the carriage between successive. actuations of said intermediate connections without actuating the same.

21. In a calculating apparatus, a plurality of number-bearing disks, mechanism for turning said disks, `said mechanism including driving connections adapted to be moved into and out of engagement with the several disks, a cam shaft, and cams mounted thereon and arranged to enga-ge and move said connections successively intoengagement with said dis ts.

22. In a calculating apparatus, a plurality of number-bearing disks, a driving shaftconnected for actuation by amounts proportionate to the numbers to be calculated, a plurality of connections equal in number 'to the disks arranged for movement to complete fand interrupt an' operative driving connection between the disks and shaft, a cam shaft, and cams mounted thereon, there being one cam arranged to engage each one of said connections to move the same into operative engagement.

23. In a calculating apparatus, a plurality of number-bearing disks, a driving shaft connected for actuation by amounts proportionate to the numbers to be calculated, a plurality of connections equal in number to the disks arranged for movement to couiplete and interrupt an operative driving connection between the disks and shaft` a cam shaft, and cams mounted with capabilities of angular adjustment thereon, there being one cam arranged to engage each one of said connections to move the same into operative engagement.

24. In a calculating attachment for a typewriting machine having a carriage. al

any

plurality of number-bearing disks, a driving vshaft connected for actuation by amountsproportionate to the numbers to be calculated, a plurality of connections equal in number to the disks arranged for movementito complete and interrupt an operative driving connection between the disks and shaft, a cam shaft, cams mounted thereon, there beingone cam arranged to engage each one of said connections to move the same into operative engagement, and means adapted to. be carried by the carriage of the typewriting machine to connect 'with and rotate said shaft on movement of said carriage.

25. In a calculating attachment .adapted for connection with a typewriting machine having a carriage, a plurality of numberbearing disks, a driving shaft connected for actuation by amounts proportionate to the numbers to be calculated, a plurality of connections equal in number to the disks ar- -ranged for movement to complete and interrupt an operative connectionbetween the disks and shaft, a ,cam shaft, cams mounted thereon, there being one cam arranged to enga-ge each one ofsaid connections to move the same into operative engagement, gearing in engagement with said shaft, and va toothed member adapted to be carried by the carriage of the typewriting machine to mesh with and operate said gearing.

26. In 'combination with a typewriting machine and thecarriage thereof, a calculating attachment comprising a plurality of 4number-bearing disks, a' driving shaft connected for actuation by amounts proportional to the numbers to be calculated, a plurality of connections equal in number to the disks arranged to be moved into and out of operative engagement with the disks and shaft, a cam shaft, cams mounted thereon, there being one cam arranged to engage each one of said connections to move the same into operative engagement, gearing in engagement with said shaft, and a toothed member co nected to and moved by said carriage and vadjustably mounted' to mesh with and operate said gearing.

27. A calculating machine comprisinga plurality ,of manually-operated members, each adapted to be actuated tocause indication of 'a different number, a shaft, driving means for said shaft including an independent actuator controlled by the manually-operated members and a driving and a coperating following member for each number to be indicated, all of said driving members being arranged for a uniform amount of travel and said following members being of different proportions, whereby varying amounts of motion corresponding to the values'of the several numbers are given them, ,and number-bearing index elements operated by said following members.

eeasoi 28. A calculating machine comprising a plurality of manually-operated members, each adapted to be actuated to cause indication of a different number, a shaft, driving means for said shaft independently actuated under the control of the manually-operated members and including a driving and a cooperating following member for each number to be indicated, all of said driving members being arranged rfor a uniform amount of rotary motion and said several driving and following members being of different proportions, p whereby varying amounts of rotary motion corresponding them, and number-bearing index elements operated by said following members.

'29. A calculating apparatus comprising number-bearing disks, manually controlled mechanism for causing indication of the numbers to be calculated, and mechanism arranged to turn said number disks independently actuated under the control of said manually-controlled members, said 'mechanism including drivers having allthe same amount of travel and being of different proportionsfor turning the disks variable amounts according to the numbers indicated'by said manually-operated members.

30. Acalculating apparatus comprising a plurality of' manually-operated members,

each adapted to beoperated to cause the indication of a different number, a shaft, driving means for said' shaft independently actuated under'the cont-rol of the manuallyoperated members andl including members all havingl the same amount of angular movement and -of dierent proportions for causing rotation of' said shaft through amounts proportionate to the numbers indicated by said respective manually-controlled members, number disks, and movable connections adapted to be interposed between said shaft and each of said number wheels independently.

31. In a calculating apparatus comprising a plurality of' members each adapted to be manually operated to cause theindication to the values of the several numbers are given 'zoV loro

of a different number, a shaft, and a plurality of intermediate driving members inl' dependently actuated each under the control of one of said manually-operated members to move said shaft, said driving members all having a uniform amount of travel, and being of varying Aradii constructed so that each may roduce an amount of motion in said sha t proportional to the number of its particular manually-,controlled operating member.

32. In -a calculating apparatus, a plurality of members each adapted to be manually operated to cause the indication of a dierent number, a shaft, a plurality of intermediate driving members for moving said shaft, and contmuously-movig members each under the control of one of said manually-operated members and arranged to be moved thereby into and out of operative connection with one of said intermediate driving members for operating the same and thereby the shaft, the several intermediate members being proportioned to drive the shaft through varying distances.

38. In a calculating apparatus comprising a plurality of members each adapted to be manually. operated to cause the indication of a different number, a shaft, a plurality of intermediate driving members, continuously-moving devices controlled by the manually-operated members for actuating the driving members to move said shaft, said driving members all being arranged to move through the same angle and being of varying radii constructed so that each may produce an amount of motion in said shaft proportional to the number of its particular manually-controlled operating member, and locking means operated by each of said intermediate driving members to engage said shaft and arrest movement thereof at the end of the bers.

34. 4In Aa. calculating apparatus, a plurality of members each adapted to be manually operated to cause the indication of a different number', a shaft, a plurality of intermediate driving members for moving said shaft, continuously-moving members each under the control of one of said manuallyoperated members and arranged to be moved thereby into and out of operative connection with one of said intermediate driving members for operating the same and thereby the shaft, the several intermediate members being proportioned to drive the shaft through varying distances, and locking mea ns operated by each of said intermediate driving members to engage said shaft and arrest movement thereof at the end of the movements of the driving members.

35. In a calculating apparatus, nine members each adapted to be manually operated to cause the indication of a different number, the numbers running from one -to nine, a shaft, a plurality of intermediate driving members for moving said shaft, and continuously-moving members each under the control of one of said manually-operated members and arranged to be moved thereby into and out of operative connection with one of said intermediate driving members for operating the same and thereby the shaft, the several intermediate members being proportioned to drive the shaft through varying distances according to the numbers indicated. by the manually-operated members.

86. In a calculating machine, members cach adapted to be manually operated to movements of the driving memcause the indication and calculation of a separate number, the numbers ruiming from one to nineJ a shaft, gear segments connected to rotate said shaft in one direction, said segment-s being of varying radii and equal in number to the aforesaid members, intermeshing-gear segments mounted adjacent said first segments and varying' inversely in radius, and mechanism controlled by the manually-operated members for separately driving said last-named segments.

37. In a calculating machine, members each adapted to be manually operated to cause the indication and calculation of a separate number, the numbers running from one to nine, a. shaft, intermediate driving members equal in number to the manuallyoperated Vmembers connected to turn said shaft in one direction, continuously-driven means normally out of engagement with said intermediate members and adapted to be moved into operative connection therewith by the manually-operated members to actuate the intermediate members and thereby the shaft, the intermediate members inchidinggear trains of varyingr values proportioned to the numbers indicated by the respective manually-operated members through which their operation is controlled, whereby the shaft may be turned proportionately to the value of the number indicated by any one of the respective manuallyoperated members.

38. In a calculating apparatus, a shaft,

driving" means therefor including independent gear trams of varying values, a continuously-moving shiftableimember located adjacent each of said driving means, and a plurality of manually-operated members, each having a connection with one of said continuously-moving members for shifting the same into operative engagement With the respective adjacent shaft-driving means, the manually-operated members being arranged to be moved an invariable amount for registering different numbers, and said gear trains being proportioned to cause varying amounts of motion in said shaft corresponding to the numbers represented by the several manually-operated members.

39. In a calculating apparatus, a shaft, driving means therefor including independent gear trains of varying values, a continuously-moving shiftable member located adjacent each of said drivingmcans, a plurality of manually-operated members, each having a connection With one of said continuously-moving members for shift-ing the same into operative Aengagement with the respective adjacent shaft-driving members and each of said connections including an arresting device Iarranged to engage and -hold a portion of the shaft-driving means engaged by its respective continuously-movwith one of the segments, the said lever arms being of lengths varying inversely to the lengths of the segments, a plurality of manually-operated members adapted to be actuated by an invariable amount to cause the registration of different numbers, and mechanism controlled by said manually-operated members for moving said levers equal amounts to cause variable amounts of rotation of said first shaft.

41. In a calculating apparatus, Ia shaft, toothed segments of varying lengths loosely mounted thereon, a one-wayactmg driving connection between each of said segments and the shaft, a second shaft parallel to the first shaft, levers loosely mounted thereon, each lever having a toothed rarm engaged with one of the segments, the said lever arms'y being of lengths varying inverselyto the lengths of the segments, a plurality of manu ally-operated members adapted to be actuated by an invariable amount to cause the registration of different numbers, mechanism controlled by said manually-operated members for moving said levers equal amounts to cause variable amounts of rotation of said first shaft, a ratchet mounted on said first shaft, a pawl mounted adjacent 'the ratchet, a plurality of arms connected to said pawl, -and means connected to each of said segments arranged to engage one of said pawl-connected arms at the conclusion of the driving movements of the respective segments to lock the pawl with said ratchet. 42. lIn a calculating apparatus, a shaft, toothed segments of varyinglengths loosely .mounted thereon, a one-way acting driving connection between each ofsaid segments and the shaft, a second shaft parallel tothe first shaft, levers loosely mountedy thereon, each lever having .a toothed arm engaged with one of the segments, the said lever arms being of lengths varying inversely to the radial lengths of the segments, a plurality of manually-operated members. adapted to be actuated by an invariable amount to cause the registration of different numbers, mechanism controlled by said manually-operated members for moving said levers equal amounts to cause variable amounts of rotation of said rst shaft, a ratchet mounted on said first shaft, a pawl mounted adjacent the ratchet, a plurality of arms connected to said pawl, means connected to each of said segments arranged to engage one of said for disengaging the links pawl-connected arms at the conclusion ofv the driving movements of the respective segments to lock the pawl with said ratchet, and means connected to said first shaft to resist reverse movement thereof.

48. In a calculating apparatus, a continuously-rotatable shaft, disks having a rotatable and longitudinally-slidable engagement therewith, pivoted levers, one being adjacent each disk, pins projecting from the disks toward the respective levers and normally out of engagement therewith, laterally-movable members engaged with said disks, a stop and a lockingpdevice carried by-each of said members, a plurality of manually-operated members each connected to one of said laterally-movable members and constructed to shift the same laterally when operated and thereby move the stop and locking device carried thereby and one of the disks and its pins into position to engage portions of one of said levers.'

l v44. In a calculating machine, a plurality of levers adapted to be manually operated for causing the indication of different numbers, laterally-inclined cam members connected to said levers, laterally-movable drivin@ means en a ed with said cani members b 5 and 4calculating mechanism adjacent said driving means and normally out of connection therewith, said driving means being arand carriage shift mechanism of a typewriting machine, a calculating attachment for typewriting machines comprising calculat-v ing mechanism, links adapt-ed to be oper# atively connected to said number keys and detachably engaged with portions of the cal-v culating mechanism, and means adapted to be connected to the shift mechanism of the typewriting machine and o erated thereby rom the calculating mechanism.

46.111 combination with the numberl ber keys and at its other end a notch adapted to engage said laterally-extendingportion of one of said controllin levers, and adisengaging device lfor said links comprising a bar extending under the links, and a holderl therefor movable to raise the bar so as to engage the links and lift their notched ends out of connection with the levers.

47. In vcombination with the number keys, carriage, and carriage-shift mechan extending engaging portion, a Yplurality of lwhich said Wheels are'freely mounted,

ism of a typewriting machine, a calculating attachment for typewriting ma- 'chines comprising calculating mechanism having controlling levers, each'of said controlling leve'rs provided With a laterallylinks eachhaving at one end an operative connection adaptedto be engaged with one of the number keys and ,at its other end a notch adapted to engage said laterally-- extending portion of one of said controlling levers, a disengaging. device for said links arranged to engage the links and' lifttheir notched ends out of connection with the levers, and an operating connection for said device adapted to-'be engaged withihe carriage shift mechanism.

48. A calculating machine having a pluralityof number-bearing wheels, a shaft on which said "Wheels are freely mounted, means for carrying from one wheel to another, means for actuating each of the wheels independently and means for rotating said shaft in the same 'direction as that of a wheel whenever a wheel is actuated.

v- 49. A calculating machine having a plurality of number-bearing wheels, a shaft on means for carryin from one wheel to another, and means orrotating said shaft in the same direction as, and at a higher speed than, the direction of movement of any number Wheel when the latter is actuated.

50. In a calculating apparatus, a train of movable computing indicators including means for carryingfrom one to another, said carrying means being movable to and from carrying position, and actuators for said indicators movable Simultaneously with said carrying means from and -to actuating li position. l

5l. In a calculating apparatus, a train of movable computing indicators including means for 'carrying from o e to another,

and an individual actuator for each indi- .j l' 'Caton-said carrying vmeans and indicators being relatively movableto and from carryTd ing position, and said actuators and indica'tors relatively movable simultaneously therewith from and toward actuating .position, whereby the carrying connections be.- tween the indicators may be broken when the actuating connection with one of them is made.

52. In a calculating apparatus, a train of movable computing indicators including combined carrying devices and locks between said indicators, separate actuatorsl for the several indicators and means whereby the connection between the actuators may be made and at the saine time-that hetween the indicators and combined carrying devices and locks may be broken.

In a calculating apparatus, a plurality of members, each actuable manually to cause indication of numbers va shaft, a plurality of intermediate driving connections for moving said shaft distances proportionalV to the numbers to be calculated, and drivers adjacent, but out ot' contact with the driving connections there being one driver for each of said connections, one of 'said connections being brought into relation for actuation by one of the drivers whenever a manual member is actuated.

In testimony whereof signature, in presence of two witnesses.

EDWARD H. PALMER. 'Vitnesses:

C. F. BROWN, f A. C. RATIGAN.

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