US842682A - Registering mechanism for calculating-machines. - Google Patents

Description

. PATENTE REGISTERING MEC J- P. MAYS. D JAN- 29, 1907.

HANISM FOR GALGULATING MAGHINES APPLICATION FILED MAY Z4, 19,045

\\\l\\ l ml" n No. 842,682. PATENTED JAN.-29, 1907. J. F. MAYS.

REGISTERING MEGHANISM FOR CALGULATING MACHINES.

APILIOATION FILED MAY 24, 1905. Y

4 SHEETS-SHEET 2.

PATENTED JAN. 29, 1907.

APPLICATION' FILED MAY 24, 1905.

4 SHEETS-SHEET 3.

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J. AF. MAYS. REGISTERING MECHANISM POR GALGULATING MACHINES.

AFPLIOATION FILED MAY 24, 1905 4 SHEETS-SHEET 4,

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@my QA/M UNITED PATENT OFFIE.

JAMES F. MAYS, 0F BIRMINGHAM, ALABAMA;

REGISTERING MECHANISM FOR CALCULATINVGNIACHINES.

' Specification of Letters Patent.

Patented Jan. 29, 190'?.

Application ned May 24, v1905. semi No'. 262.031.

Alabama, have invented new and useful Im provemerits in'Registering Mechanism for Calculating-Machines, of which the following` is aspeciiication.

My .invention relates to registering mechanism for calculating or similar machines,

such as I have describedin a pending application, Serial No. 217,851,1iled by me the 23dl dayof J uly,'1904, wherein a plurality of rockshafts are directly operated by` rows of keys and registering-dials 'are operatively con- `nected to the shafts and moved thereby in correspondence with the movements imparted to the shafts by the keys, each keyl acting to rock its lrespective shaft in propor tion toitsvalue.

In machines of this character the uniformity of key resistance to the touch of the operator is most important for rapidvoperation, which I consider of prime importance.V

In my pendin application I haveshown various devices or maintainingthe key resistance .in moving the shafts to different degrees substantially uniform, and with this object in view I have adapted the registering mechanism constituting my present invention land a division of my said pending application to perform its'carrying or transferring fromidial to dial in a gradual manner, so that the key resistance will not be increased as a shaft is rocked tovmove its dial from 9 to 0 and carry l to the dial of higher degree.

Where this gradual 'carrying or transferring action obtains, it vis important 'to provide I against confusion in reading the totals on the several dials which would arise from the tendency of the carrying operation to move the dials of higher degree almost a complete registering step before the actual :point of registry is reached, thus moving their indicated numeral partly out of the `field of vision and brin ing the succeeding numeral of higherl va ue artlyninto the/field. This is particularly o ijectionable in calculating-machines, wiere every precaution should be taken against possibility of mistake by the operator in reading the registered items or totals.v To obviate this, I provide each dial vupon which the carrying operationtakes ef- 4fect with a movable shieldor plate which has a sight-opening through Which one of the nu merals on thedial4 is vislble and is adapted to y l move with its respective dial during the gradthe proper indicating-numeral in view until the point of registry forthe carrying operation 1s reached, when the plate Shifts its pothrough its sight-opening a numeral of higher degree` Thus though the carrying operation is gradual so far as the operating mechanism is concerned it is practically instann taneous so far' as it concerns the indicating` or totaling.

It is a further object of my invention to adapt these dial-shields to serveas a portion ofthe transfer mechanism,l means being pro vided to impart to themthe gradual carrying movement from the dial of lower degree, which each shield in turn imparts to its respective dial, until the reached, when the shie d releases the dial and returns to its initial position, the dial remaining stationary. f

A still further object of the invention is to rovide a novel form of resetting mechanism by which all of the registering or totaling dials may be quickly reset to Zero position, and, further, to so arrange the mechanism that the use cf the resetting device is op tional with the user, it being possible to restore and quickly reset the dials to a zero position by means of the keys. f With these and other objects in view, as will more fully hereinafter appear, the invention consists of the novel construction and arrangement of parts hereinafterfully dcscribed, illustratedin the accompanying drawings, and particularly pointed out in the appended claims, -it being understood that various changes in the form, proportions, size, and minor details of the structure may be mafie without departing from the spirit or 'sacriiicing any of theadvantages of the invention. 4

Referring now to the drawings, Figure lis a transverse sectional elevation of the machine shown partly in section to illustrate the registering mechanism. Fig. 3 represents a side elevation of a part of the registeringrn wheels, enlargedfor the purpose ofillustrating the manner of transferring. Fig.k L is a sectional view through Fig. 3, taken so as to illustrate the cams and the transferdeyers. Fig. 5 is a detail view illustrating the mechan.M kism for returning the several registeringm sition, irrespective of its dial, -to expose' point of registry is constructed in accordance with my invention. Fig. 2 is a top vplan view, broken away and ual carrying operation, so'as to maintain only IOO EEO

wheels to a zero osition. Fig; y6 is a trans- A verse sectional e evation of affront portion of the machine onA the liney y, Fig. 2. Fig. 7

, isa detail view of the manually-operated -por- Irs :tion of the resetting mechanism.

Similar reference-numerals refer to' similar parts' through out they drawings. The registering-mechanism which forms the subject-matter of this application constitutes a part only of the. operating parts embody#V ing calculating-machine, Which 'being fully described 1n my aforesaid pending 'applicationmay be here briefly referred to as comprising acasing 1, formed preferably of metal and provided 'with transparent. panels of glass, such as 2, through which the opefat ing parts may be inspected. The top 'of the casing is formed by a plurality of metal strips 3, extending from the glass 2, Where they are supported on a transverse r{viiilirtition tto the e abuttingside rear wallof the casing. edges of these strips are recessed' to'provide .openings through which the shanks 5 of the The keys' are arranged in as,

keys pass. man rows of nine each as the capacity of the `mac ine may require, the first row being for units, the secondvfor tens, the third for hundreds, &c. yThe keys of each row are provided with finger-pieces 6, which are succes# sively numbered from l to 9, beginnin at the fron't of the machine. The Shanks of the keys are formed of metal bars provided with shoulders 7, arranged at progressively- 'decreasing ydistances from the finger-pieces of each-row from front to rear, so that the successive'keys of a Arow'have strokes of.

varying length. In the case of the keys numbered 9 these shoulders may be dispensed with, when the finger-piece will serve lportioned to its numerical value.

as 4a sto to limit the downstroke of the key. From t iis arrangement it follows that each key will have a stroke whose length is pro- 1s longitudinally slotted4 at 8 and provided at its lower end with a "circular plate 9, whichv enters a cylindrical casing 10, secured to the bottom of the casing and serving as a guid'e'for the lower end of the keys. 4Coiled springs 11 lwithin these casings engage plates'9 and act to return the keys to their initial position.

- Corresponding with each row of keys is a rockerrSl-iaftialZ, journaled in bearin s in plates'13 l"a-n'd 14, disposed., .respective y, at points near thefront and rear walls of the l casing and'further supportel at intermediate points by cross-bars 15. 'The bearing portions of the shaft are reduced to prevent its 'longitudinal displacement. .Each shaft 12 is operatively connected with the keys of av row by means of nine rocker-arms 16,- each of which asses through the slot in a key- 'shank an is adapted to be engaged b an antifriction-roller- 17, journaled 1nthes ank when the key is depressed and moved to rocki E a'ch sh anky 'the-shaft 12. The am xtsntof the staaf-S travel being preferably fifty-four degrees, it follows' that'the extent of thelmovement for each units value will besix degrees'. Each rocker-shaft' is actedupon by a spring 18 through coperating levers 19 and 20 (more fullyoe'scribed in the companion application), to'return it to lits initial ositionl as soon as the 4depressed key wbic operated it -has been` released and returned by its spring 11. -The upward movement of the keys is stopped 'by small pins 21, extending through the key'- lshanks-and'adapted to engage lthe under side of the Atop of the casing.' The movements-'of therock-shafts 12 are transmitted tothe registering mechanism by. means of arms 22,- keyed to the front end of the shafts andk carrying dogs'23, which-engage ratchet-Wheels 24, mounted on short shafts 25. These shafts are journaled in the partition'4 and bearing-plates 13 and carry gear-wheels 26, disposed near thepartition 4. Gear-'Wheels 27 mounted onv shafts 28,l mesh with gears 26, these counter-shafts being journaled inthe partitions or plates 4 and 29', which' are preferably angled at their lower ends and bolted to the bottom of the casing. These counter-shafts also carry the units-registering dial 30, and tens, hundreds, &c., registering dials 31, which are keyed thereon and disposed between the two bearing-plates. The transmission-gearing is designed to transmit to each dial a rotary m0vement corresponding to that imparted to its respective shaft 12 by the depression of a key, which movement-will advance the. dial the number of points represented by the operat ing-key.

IOC

Though the mechanism hereinbefore dewheels or disks having preferably two setsof vdigits from 0 to 9 arranged in rotation around'their-peripheries. 'lhe units-dial will be operated by the first row 'of keys on the right through their respective shaft 12 and transmission-gears, the tens-dial by thesecond row of keys and their shaft 12,' the hundreds-dial bythe third row of keys, Sac. Each of the dials carries a ratchet-wheel 32, having a number of teeth correspondingl to the number of digits O'n the dial-t. e., twenty. S ring-pressed pawls 33, fulcrumed to the p ate 29, engage each ratchet-wheel and" act to prevent a reverse movement ofthe dials. Each dial is further provided,with a cam-sur- Maese face this surface being preferably formed by the periphery of a cam-disk .34, which issecured to or formed integral with the dial. In

' accordance with the present construction this disk will have two cam-surfaces, one for each set of digits, which terminate in shoulders 35, -dlsposedopposite the digit of each set.- Each cam-surface commences at the termination. of a left -of their centers and -length so that their free ends project beyond on'a gradual arc until it terminates at the other shoulder. A lever 36, pivoted to the plate `4 at a point above and to the right of each cam-disk, rests upon the adjacent disk,

so that with each complete rotation of the .'15

latter the lever will be twice raised by the action of thejcam-surfaces andv 'lowered b dropping oil' the shoulders. 5 The levers pre point well to the erably engage the disk ata the-arc circumscribedby the camfshoulders.4

j nected .to the platel 29v bybolts 8.

iicient size to expose only one of the digits on l the wheel'30 to inspection through Referring n ow .to Figs. 3 and 4, theunts-dial 30 is covered byva stationary shield 37, con'- This shield orv plate has a sight-opening 39 of sufthe glass plate 2,*Fig.' 1. Each of the dials 31 are covy 'ered by segmental shields 40, preferably 3 loosely on registering-dials and.

formed of" light sheet metal and fulcrumed the shafts 28. These shields serve to cover the upper periphery of the lare provided with a sight-openings 30, which expose only one of the digits-on each of the dialsat a time. An

farm 41 ex-tends downwardly'at an angle from. each of the shields and carries at its lower end a spring-pressed pawl 42, which is adaptedr to engage the teeth of a ratchetwheel 32and1mpart to this wheel and its;l

correspondingd'ial any forward movement 'received'by'the shield. 'The shields do not the levers A36. rest but 45V which projects v .gageswith the lever 36, which rests upon the j ried by the project over thc cam-disks 34, upon which the ulcr'umed shields 40 are each provided with. a pin or lu 43, over the'cam-disk an encam-diskof the adjacent dial of lower degree. Thusthefflever resting upon the cam of the units-dial is adapted to engage the .pin carshield covering the tens-dial and the .lever resting upon the cam of the tensdial plate 29, bearsgat its'free- Ion veach of the shoulders 40 below itsful-` I crum-point and acts to` will engage the pin on the shield for the hundreds-dial@kfw.` spring 44, secured to a stationary party ofthe. frame, such as the end against a pin 45 oppose the action of the levers 36 in rocking the shields and also torestore the shields tov an initial position.. y The springs 44- hold the pins 43 in engage- "ment with the free ends. of the lever 36, yso

that the shields will movements ofthe levers,

The carryingv or transferring operation is shoulder and increases are of sulicient j necessarily vrespond to three dials tothe right will be rotated by the operating mechanisnn so that they expose, through the sight-openings 39, the numerals 594. When this is the case, the shields, cams,- and levers for these dials will occupy the. positions indicatedin Figs.. 3 and 4. lt will be noted that the units-dial .cam has lifted its lever 36 nearly one-half of its travel, whichmovement of the lever has been improjects and engages with parted to the shield 4() of the tens-dial, which has been thus rocked on its axis from its initial position indicated by a dotted line. The engagement of the pawl A42, carried bythe shi'eldearm 41,- has moved the tens-dial forward approximately half a step, as may be noted from the position of the pawl 33 withl lregard to the ratchet-teeth. The operation of the tens-'dial to expose the digit `9 leaves thisdial on the .point of transferring or carrying to the hundreds-dial. Thus it will be noted that the tens-lever 36 vis nearly atthe where any further movement. ofthe tens-dial will lift it and throw the hundreds-shield for-v ward sufficiently to cause the pawl 42 to drop behind the ratchet-'tooth of the hundreds# dial, on the' edge of which it is shown resting.l As this loccurs the tens-lever drops behind top of the cam-surface and in a position i Ico shoulder 3.5, when spring 4.4 swings the hundreds-shield 40 to t next digit of higher being held against a right by its engagement with pawl 33. This carryingoperation ispositive, requires only a gradual application of power, maintains the exposed digits in'fullview until the point for order, .thehundreds-'dial e right andexposes the similar movement to the registering the digit carried forward and exposing a higher numeral-is reached, and acts independently lof the v.operating mechanism, i

it being noted that the forward -movement imparted toa dial by its shield is transmitted.,

through the'meshing gears 26`and 27, tothe 'ratchet-wheel 24, which moves" forward, bringing other teeth into engagement with vpawl 23. The ratchet-wheel 24 will be preferably of considerable diameter and provided with Va large number of'very fine teeth, the purpose being, to have as great anumber o f teeth as possible subtended by the. arci of movement of the ratchet-wheel in registering .one digit. The effect of this is to minimize wheel 24, dueto the carrying action, so that the lost motion between thearm 22 and the it will be less am the ayaiowabiefor-.the digit exposed through t e sight-opening of its .dial-Shield. l

rWith the mechanism thus far described the y f depression of any key in/'anyvertical column Will-'eifect rotative movement of the disk at thefoot ofthat column to an extent dependent on the-'digit-key depressed, and, further. the, transfer lfrom disk to disk may be made io so thatY the*successively-increasing totals will be at all times visible through the glass panel .5,fthe arrangement of the rocking shields being suchv that the sight-openings in the latter will remain aboveareviously-exposed digit yl'mtilftheshield is al owed to move over the nexty digit. l

To'the forward end of each' of the dialshafts 28, which project through the plate 29, lis' secured. a cross-bar 48, disposed in a plane :ze parallel with the dial and'provided at or near its ends Withprojecting pins 49, which are adapted to' be engaged by the resetting me ch- -anism;hereinafter described and effect -the :rapid restoration of allthe dials to initialo l:z 5 fzero, position.

Theresetting mechanism is disposed at "the front endofl the casing and comprises a swinging .plate or support 50, having lugs 51 at. its opposite lower corners, which are piv- 3o `voted by pins 52 to the side walls of the casing.

4: rack 1n engagement witha plurality of muti- The gears 57' are mounted on lated gears 57 studs 58, carried by the plate 50, each stud ben ing substantially in alinement with each of the diaLShafts 28. -Each gear has connected 45 thereto a radially-disposed arm 59, that is .'.adapted to engage with one or the other of thepins 49 on the cross-bar 48 when Vthe plate is swung on its pivots to a vertical osition; .but normallyI these arms 59 are eld away from thev bars 48 and` pins 49, so 'that-f the latter are free. to rotatewith the 'dials'. When thc arms 59 are in position to engage `one of the pins 49, their arc of travel l with the gears 57 is suliicient to pick up each of'thebars 48 and move the dials through shafts 28 'to zero position. The plate 50' is further provided with bearings for the reception of a shaft 60,'Which extends outward through a vertically-disposed slot 61 in the 6o front wall of the casing. To the outer end fof this shaft is secured a disk 62, carrying a vlpin 63, which projects through an arcuate slot 64 in a cam-disk 65, which is loosely fulcrumcd on the outer end of the shaft 60.

y65 iT-hef-.cam-disk rests on a small -shelf 66, se-

seaeea cured to the front offthecasing, and is adapted to be operatedby aghandlc 67, which under .normal conditions rests against a pin 68,-

projecting from the casing. To reset the dials to initial position, the crank 67 is moved upward, which -causes the cam-surface ,of

vlatter with the pin 63, so that the disk 62,

which is keyed to the Shaft, is not moved.. After thishowever, the left end of the slot will engage the pin, and as the movement of the lever continues until stopped by the pin 69 4the disk 62 will be turned and its movement transmitted, through shaft 60, to a gear 70, connected to the rear end ofthe shaft and disposed beyond the plate '50. This gear meshes with a short rack formed on the bottom of the rack-bar 56, and thus imparts sidewisc movement-to the rackebar. The movement of the rack-bar is transferred to all of the mutilated gears 57, which swing their arms 59 through an are sufficient to cngage one or the other of all the pins 49 and restore the dials to zero position by the time the crank-lever -67 has completed its movement by engaging stop 69. As the crank is moved -to the left a reverse -operation takes place, which moves the rack-bar to the left and restores the gears 57 to the position indicated in Fig. 5 and permits the spring 53 to swing the plate 5() out of its voperative position.

The provision of two sets of digits on the dials necessitates the use of two pins 49 and, as before stated, two cam-shoulders 35. lt will be obvious, however, that a greater or less number of sets of digits may be used, in which case the said parts will be increased and decreased accordingly.

Having thus described my invention, What l claim as new, and desire Ito protect by Letters Patent, is-

-1. ln a registering mechanism, a plurality of independently-operable registering-dials,' sets of digits thereon from 0 to 9, means to transmit gradually from dial to dial a digit-- carrying vmovement throughout the dials movements in exposing said sts of digits,

exposed to view on the dial or dials during said carrying movement.

2. ln a registering mechanism, a plurality of independently-operable registering-dials,' one or more sets of digits from 0. to 9 thereon, cam means to transmit gradually from dial to dial a digit-carrying movement throughout the dials movements in exposing a set the disk 65 by bearing against shelf 66 to IOO IIO

. and means to retain only the registered digits of digits, and means forming part of the carrying mechanism which act to retain only the registered digits exposed to view on the dials by said cams to transmit a carrying movenient from dial to dial, said means acting gradually during the travel of said dials in exposing a vset of `digits to complete their carrying operation.

e. In a registering mechanism, a plurality of registering-dials, digits thereon, and independently-movable devices for each of said dials adapted to dis lay a single digit at a time, said devices lbeing operatively connected respectively to the dials of next lower value or parts movable therewith.

5. Inaregistering mechanism, a plurality of independently-movable dials, digits ar- `ranged thereon, means to effect a transfer movement from dial to dial, and a movable shield for each dial to which transfers are made, said shield having an operating connection with its respective dial and with parts movableA with thedial of next lower value. i f

6. In a registering mechanism, a plurality cf dials, characters thereon, and transfer mechanism for carrying from dial to dial which comprises as a part thereof a number of apertured lates which maintain in sight but a single c aracter at a time on each dial.

7. In a transfer mechanism, a rotatable dial rovided with numerals, a movable shiel for said dial which is unaffected by the rotation of said'v dial, a display-opening in said` shield'through lwhich a numeral is displayed, and means independent of said dial to move said shield to continuously'display the same numeral until the completionv of a transfer movement.

8. In a' calculating-machine, la series of indicatin -dials, a movable shield for each of the dials beyond the primary dial, the shields havingeach van opening for the display of a single character on the dial, means for iinparting movement from each dial to the shield of the dial of next highest value, said shield moving with its dial during` the transfer movement and returning independent of said'dial tc expose a higher numeral at the display-opening.

9. In a. calculating-machine, the combination with a plurality ototaling-dials, of a transfer mechanism including a shield for each dial above the primary dial, each shield having anopening for thedisplay of a single numeral, means for transmitting movement -of each dial to the shield of the nexthighest dial, said shield moving with its respective dial to expose the. samefnumeral until the completion of the transfer ,movement and then moving independently of the dial to expose a higher numeral.

10. The combination in a calculating-inachine, of a plurality of totaling-dials, shields for all except the primary dial, each shield` having an opening for the display of a single numeral, .ratchet-wheels secured to the dials,

pawls carriedi b y said shields and engaging such ratchet-wheels, cams revoluble with the dials,'and cam-operated levers for engaging and moving the shields. i

11. In a calculating-machine, the 4combination with a plurality oftotaling-dials, of

pivotally-mounted shields covering all except the rimary dial, each shield having an opening or the display of a single numeral, a pawl-carrying varm movable with each shield, a pawl on said arm, a ratchet-Wheel movable with each dial and with which the pawl engages, a cam movable with .each dial, a Cain-lever for engaging and moving the shield, and a spring for restoring each shield to initial position and thereby exposing a higher numeral at the display-opening.

12. In .a calculating-machine, the combination with a plurality of totaling-dials, of a shield pivoted at the axis of eachJdial and having a display-opening, an arm secured to each shield, a pawl' carried by said arm, a I

ratchet-wheel secured to the dial and engaged by the pawl, a cam carried by'each dial, a lever for engagement with each cam which is pivoted at one end to a iixedpoint, and having its opposite end engaging a shield, and springs for restoring the shields to initial position. l

13. In a calculating-machine, a plurality of totaling-dials, key-operated means for independently operatingeach dial', 'and transfer mechanism for gradually vtransmitting a digit-'carrying movement from dial to dial throughout the movements of said dials, said operating means comprising lost-motion connections between each dial and its operating means and means to continuously display IOO the same vnumeral until thexzompletion of a transfer movement for each' dial.

14. In a calculating-machine, a plurality of totaling-dials, .a ratchet-wheel secured to each dial, a pawl engaging said ratchetwheel and restricting its movement toone direction, a second pawl engaging-said wheel, an element carrying said pawl which receives movement from the operating mechanism of the dial of lower value than that corresponding to the ratchet-wheel with which said pawlvv engages, the movement offsaid element being Lcalculated to rotate the ratchet and its dial one step, and .key-controlled devices for opera-ting said dials which comprise a toothed` wheel having a greater number of teeth than the dialratchet-wheels, a movable element carrying a pawl which engages and rocks said toothed Wheel, and spring means to restrain said first-mentioned paWl-bearin element from following' the movement of the dial ratchet-Wheel When operated by the keycontrolled devices.

15. In a registering mechanism, a plurality of dials, keyoperated means to move said dials 'independently to display a digit thereon transfer mechanism for transmitting a primary dial, a-'fixed shield provided With a digit-display opening for the primary dial,

movable shields provided With digit-display openings for the other dials', and means to cause said latter shields to move With their 'corresponding dials during a digit-carrying movement. I

16. lIn a registering mechanism, a number of dials provided each With a set ofdigits, a

cam-surface revoluble with each dial, said surface lsubstantially corresponding in extent with the space occupiedby the set of digits 'and terminating nearl the zero-digit, pivoted levers engaging said cam-surfaces and-movL able thereby, and devices, comprising a display-shield for tlie digits of each of said dials', which devices are engaged by said levers and impart their movement to the dials of next higher value.- f 17. In combination, a plurality of registering-dials carrying lugs or projections, and a-resetting mechanism comprising a plurality of movable devices, a movable support onwhich said devices are movably mounted and Which is adapted to bringthem into the path of said projections, and operating means to move said devices, independently of said support, to engage said projections and turn said dials to initial position.

18. In/ a resetting mechanism, a set of dials, a movable plate, a Vplurality of arms pivotally mounted thereon, and operating means for 'shiftingsaid plate to position said arms for engagement with said dialsand for movingsaid arms relatively tosaid plate to reset the dials. A

19. Ina resetting'm'echanisma set of dials, a pivotally-mounted plate adjacent to said "dials, pivotedarms mounted on said plate, a movable element engaging said arms to rock them, a shaft mounted in said plate and operatively connecteduto said element, a

cam-lever and a lost-motion connection'be tween said lever and' said shaft..

" I20. In resetting mechanism, the combinaengaging arm, a common actuating device h A forl said members, andmeans for imparting digit-carrying movement to all except the* f port.

j bers carried thereby and each having a pifi-l 2 1. In resetting mechanism, the combina i i 4tion with a plurality of indicating-dials, of

projecting pins or lugs connected thereto, a

.movable support, a plurality of gears carried thereby andeach having a pin-engaging arm, a rack engaging the gears, and means for imparting longitudinal movement to said rack;

22. Ini a resetting mechanism, the combie: nation with a plurality of indicating-dials,

pins or lugs connected to the dials, a Ipivotally-'mounted plate, a plurality of studs car ried by said plate, mutilated gears mounted on the studs,` a rack for engaging' the mutilated gears, a mutilated rack-driving gear,

and a 'handled shaft carrying said drivinggear andserving as a means for adjusting the plate to and from resetting position.

23. in a resettingmechanism, the combination With a plurality of indicating-dials, Aof pins connected to the dials, apivoted plate, a series ofv studs carried thereby, mutilated Agears mounted on the studs and'provided with pin-engaging arms, a rack for engaging the -mutilated gears, a mutilated drivinggear engaging a second set of teeth on the rack, a shaft carrying the driving-gear, an 1nclosing casing having a slot through which the shaft extends, a shelf or bracket carried by the casing, a disk secured to the shaft and having a projecting pin, and a handled cam- 'lever bearing on the shelf or bracket and provided With a slot into Which said pin extends. In testimony whereof I have hereunto set my handin presence of two subscribing Witnesses.

. j JAMES F. MAYS. Witnesses:

A. R. FoRsYrH, THoMAs BoWRoN.

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