US1513438A - Printing press - Google Patents

Description

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WALLACE S. WARNOCK, OF CHICAGO, HILINOIS.

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Application filed November 6, 1920. Serial No. 4223M.

A furtherobject is to provide delivery mechanism adapted to handle the output of a press which'is adapted to print either two-color work, or to print two different jobs simultaneously, if desired.

A further object is to provide delivery mechanism of this character which is adapted to handle rapidly the output of a press of large capacity in such manner as to prevent the blurring of the printed sheets.

The improved delivery mechanism is well adapted, for example, to handle the out ut ofa ress of the character set forth in tters Fatent of the United States No. 1,153,- 587, granted September 14, 1915, to Wallace S. Warnock. In the press described in said patent, there is employed a tympan cylinder adapted to support two sheets to be printed upon, and two printing cylinders coacting with the tympan cylinder in such manner that each cylinder may print upon both sheets of paper, as in multi-color work,

or each prlnting cylinder may print upon alternate sheets, so that two jobs of. work may be run through the press at the same time, accordin to desire.

In the embo iment'of the invention shown in the accompanying drawings, the printed sheets of paper are taken from the tympan cylinder by a single transfer cylinder and by it delivered to a distributing cylinder which serves as a feed cylinder common to the' same; Fig. 12, a broken vertic pass to the endless delivery devices, which are disposed one above the other, the sheets being received alternately by the endless delivery devices. The sheets are' carried by the upper portions of the endless delivery devices with the printed sides down, are then carried back under the discharge ends of the endless delivery devices, and dropped in se arate stacks, with the printed sides.

up. he transfer cylinder is equipped with annular serrated members which serve to hold the printed surface away from the cylinder in a manner now wel1.understood in the art. The rollers for the front ends of the endless delivery devices are thus equipped, also, so that blurring of the sheets Wlll not occur. When the sheets are dropped on the stacks the printed sides are up, so that the ink will have opportunityto dry. The invention is illustrated, in its pre ferred embodiment, in the accompanying drawings, in which- Figure 1 represents a broken side elevational View of a printingress ui ed with the improved delivery i nechadi sm fihe printing-press itself being shown brokenly; Fig. 2, a transverse vertical sectional view taken as Indicated at line 2 of Figs. 1 and 3, the view thus being directed from the rear towards the front end of the delivery mechanism; Fig. 3, a broken vertical sectional view taken as indicated at line 3 of Fig. 2, this view showin the distributing cylinder and the front en portions of the two endless delivery device's; Fig. 4, a broken plan view of the mechanism shown in Fig. 3;

Fig. 5, a broken vertical transverse sectional as indicated at line 9 of Fig. 8; Fig. 10, a

side view of the gear-wheel and cams which Operate the cutters; Fig. 11, an ed e view of sectional view taken as indicated at line 12 of Fig. 8; Fig. 13, a broken vertical sectional view taken as indicated at line 13 of Fig. 14; Fig.

114, a broken side elevational viewshowing the mechanism for actuating the shiftable cams shown'in Fig. 13; Fig. 15, a broken plan view showing a portion of one of the endless delivery devices and one of the gripr devices associated therewith; Fig. 16, a fioken sectional view taken as indicated at line 16 of Fig. Fig. 17, a broken lan section taken as indicated at line 17 of Fig. 1 and showing the sheet-jogging mechanism employed; Fig. 18, a broken elevational view taken as indicated at line 18 of Fig. 19; Fig. 19, a broken plan view of the sheetjogging mechanism; Fig. 20, a section taken as indicated at line of Fig. 17 Fig. 21, a broken longitudinal vertical sectional view, on an enlarged scale, showing the manner in which the endless delivery devices are equipped with tapes for sup orting the sheets; and'Fig. 22, a broken p an view of the same.

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In the embodiment illustrated, A represents the frame of the machine; B an impression cylinder, or tympan c linder, of a rotary press, said tympan cy inder being adapted to carry two separate sheets of paper and being uipped with two sets ofgrippers 1 and 1; one of a pair of printing cylinders which cooperate with the tympan cylinder 18; l), a transfer cylinder which receives the printed sheets from. the tympan cylinder B; E, a sheet-distributing cylinder which receives the printed sheets from the transfer cylinder D; F and F, upper and lower endless delivery devices, respectively, which alternately receive the printed sheets from the distributing cylinder E; and G and G, automatically adjusted sheet-supporting platforms which receive the printed sheets from the endless delivery devices F and F, respectively.

The frame A of the machine may be of any suitable construction. It is shown as comprising a pair of suitably connected side-frames for the delivery mechanism, equipped with suitable bearings for the various cylinders and with guides for the endless chains of the endless delivery devices.

As stated, the tympan cylinder 18 is equipped with two sets of grippers 1 and 1 and the tympan cylinder is thus divided into two separate impression surfaces adapted to support separate sheets of paper. The printing cylinders C (one shown) are adapted to remain constantly in printin relation with respect to the tympan cylinder, or to be alternately moved into and out of printing relation, as desired. The mechanism for accomplishing this purpose is not shown in the accompanyin rawings.

Referring to Fig. 12, the transfer cylinder D is equipped with grippers 2 which are adapted to engage the advance end of a sheet of paper 3 just prior to the instant when it is released by the grippers of the impression cylinder B. It will be understood that the grippers of the im ression cylinder are antomatically opene at the proper instant when the transfer of the sheet from the tympan cylinder to the transfer cylinder is to occur. The means for automatically effooting release of the grippers of the tympan cylinder are not shown. The grippers 2 are carried by a rock-shaft t journaled in the cylinder D near its periphery and equipped with a trip-arm 4, which is adapted'to be actuated by two diflerent cams 5 and 6 which are mounted 'adjustably on the frame A to enable them to be properly timed. The cam 5 serves to open the gripper 2 to enable them to receive the sheets from the tympan cylinder B; and the cam 6 serves to open said grippers to enable them to release the sheet at the instant that the grippers of the distributing cylinder E gri the sheet.

As shown in Figs. 8, 9 an 12, the transfer cylinder 1D preferably is equipped with sheet-cutting devices which may be employed to divide each one of the sheets in a similar manner into a plurality of sheets, or may be employed to divide alternate sheets into a plurality of sheets, the lines of cutting being difl'erent, as desired. The cutting devices comprise rock-shafts 7 and 8 having their ends suitably journaled in the side members of the frame; adjustable arms l and 8 carried by the rock-shafts and equipped, respectively, with rotary cutters 7 and 8*; arms 7 and 8 with which the rock-shafts are equipped near one end, said arms having connected therewith coil springs 9 which tend to throw the cutters to the operative position; cam-arms 7 and 8 with which the rock-shafts are equipped at one end; cams 7 and 8 adapted to alternately actuate the rock-shafts to raise the cutters from the cutting position; and a gear 10, interposed between and serving to actuate the cam-wheels, the gear 10 being actuated by a pinion 11 mounted on a shaft 12 which is equipped with a gear 13 actuated by a gear 14 mounted on the shaft of the cylinder D. The cylinder D is shown as composed of wheels or spiders mounted on a shaft, but it is to be understood that it is the same as though a continuous cylinder were emplpiyed.

t may be stated here that the cylinder D is equipped at one end with a large spurgear 15 which is actuated by a large spur-gear 16 which rotates with the tympan cylinder B; and the spur-gear 15 meshes with and serves to actuate a large spur-gear 17 with which the distributing cylinder F is equipped. The gear 17, in turn, meshes with spur-gears 18 and 19 mounted on the shafts 18 and 19, respectively, of the cylinders which support the feed ends of the endless delivery devices F and F. Thus, the transfer cylinder, the distributing cylinder, and

ltiil Mill with grippers 20 mounted on a rock- 20 adapted to be actuated b a cam-arm 20 The grippers 20 are adapte to be opened to receive the sheets from the transfer cylinder D by means of a cam 21 which is adj ustably mounted on the frame A. Said grippers 20 are adapted to be opened at difierent points, in alternation, to deliver alternate sheets to the upper and lower endless delivery devices F and F by means of shiftable cams and upper endless deliver 22 and 23, respectively, as will be understood from Figs. 3, 7, 13 and 14. These cams are preferably formed integrally with a head 24 equipped with stems 24 which work in tubular guides 25 with which the frame A is equipped. The outer ends of the stems 24 are secured to a cross-head 24 which is connected, by a linkc26, to an arm 27 of a rock-shaft28 which is equipped with a cam-arm 29 having a roller 29 which works in a cam-groove 30 of a cam-wheel 30. The wheel 30 is actuated by a shaft 31 equipped with a bevel-gear 32 actuated by a bevel-gear 33 with which the shaft of the cylinder D is equipped.

It will be understood, particularly from Figs. 3 and 13, that when the head 24 is shifted outwardly the cam-roller of the arm 20* will be engaged by the cam 23, so that the gripper 20 will be opened to release the sheet at the instant it is engaged by one of the grippers of the lower endless delivery device F; and, when the head 24 is shifted in the opposite direction, the gripper will be caused to release the sheet at the instant it is engaged by one of the grippers of the other endless delivery device F. The shifting of the head 24 occurs at each revolution of the distributing cylinder E, so that the sheets are delivered alternately to the lower devices.

The feed end of the en less delivery device F is mounted on a cylinder 34 which is equipped at its ends with sprocket-wheels 34; and the discharge-end of said delivery device is mounted on a cylinder 35 which is equipped at its ends with sprocket-wheels 35 endless sprocket-chains 36 are mounted on said sprocket-wheels; and these sprocketchains carry a series of gripper devices which are spaced equidistant apart a sufficient distance to give room for the largest sheet which can be printed on the tympan cylinder B. The endless chains 36 are further equipped with cross-bars which carry ta es adapted to support the sheets.

he front end of the endless delivery device F is mounted on a cylinder 37 which is equipped at its ends with sprocket-wheels 37*; and the rear end of said endless device F is mounted on a cylinder 38 which is equipped at its ends with sprocket-wheels 38. The sprocket-chains 39 are mounted on said sprocket-wheels. The sprocketchains 39 are equipped at suitable intervals with gripper devices which are separated a sufficient distance to give room for the largest sheet of paper which can be printed on the impression cylinder B; and said sprocket-chains are further equipped with cross-rods or bars which support tapes upon which the sheets rest as they arelcarried rearwardly.

It will be noted from Fig. 1 that the upper endless delivery device or conveyor F has its discharge end extending a considerable distance beyond the discharge end of the lower conveyor F; also, that the auto matically' adjusted platform G which receives the sheets from the upper conveyor is disposed in the rear of the platform G which receives the sheets from the lower conveyor. These platforms are lowered auto matically the thickness of a sheet of'paper at the proper instant.

The upper portions of the chains 36'travel on longitudinal guides 40, and the lower'portions travel on guides 41. The upper portions of the chains 39 travel on guides 42, and the lower portions travel on guides 43. The front portions of these guides are-supported on one side of the machine by a bracket 44 carried by the side frame of the machine and are supported on the other side by a bracket 45 carried by the side frame of the machine, as will be understood from Fig. 2.

The gripper devices with which each set of conveyor-chains is equipped at suitable intervals will be understood from Figs. 2, 3, 4, 15 and 16. The chains at one side of the machine carry brackets or mountings 46; and the chains at the other side carry mountings 47 which are in the form of shoes. Fixedly carried by these mountings is a transverse shaft 48; and parallel with the shaft 48 is a rock-shaft 49 whose ends are journaled in the mountings. The shaft 48 is equipped with a series of adjustable rings 50 carrying abutments 50 and the shaft 49 is equipped with a series of adjustable grippers 51 which coact with the abutments 50 to grip the sheet of paper. The shaft 48 is also equipped with an arm 52, between which and an arm 53, with which the shaft 49 is equipped, is confined a coil spring 54 A rod equipped with an adjustable stationar cam 58 associated with the upper conveyor and Ill 'ciated with the lower conveyor F.

with an adjustable stationary cam 59 asso- These cams are adapted to depress the rollers 5'? of the rippers when the sheets have been returned atfthe lower sides of the conveyor to the proper point to be dropped upon the stacks of sheets supported by the platforms Gr and G. The cams 58 and 59 will be better understood with reference to Fig. 6. These cams are alike. The cam 58, for example has a surface 58 adapted to engage the upper surface of the shoe 4:? for the purposejof preventing the shoe from rotating about the shaft 48 at the moment when force is exerted to open the gripper device; and the member 58 also has a cam surface 58 which is adapted to be engaged by the camroller 57, thus causing the arm 56 to be de pressed to rotate the rock-shaft l9 and release the sheet of paper from the gripper,

thus permitting the sheet to drop upon the stack where the sheets are collected.

As will be understood from Figs. 3 and 5,- each of the cylinders 3A, 35;3'; and 38, upon which the end portions of the endless. conveyors are mounted, is rovided with a segmental recess which-1s adapted to receive and house the gripper devices ofthe conveyor when they pass about said-cylinders. At the feed end. of the conveyors, the grippers must be opened to admit the sheets delivered thereto by the distributor cylinder E. Accordingly, as will be understood from Figs. 2 and .3, the bracket 45 of the frame carries-a cam-bar 61 under which the roller 57 of the gripper passes, the cam 61 serving to trip, or open, the gripper at the moment that the sheet is to be admitted. The rear end of the bar 61 has a bearing 61 journaled on the shaft 18 of the cylinder 34.

In a similar manner, the bracket 45 carries a trip-cam 62 associated with the lower conveyor, and which is adapted to open the gripper at the instant .it is to receive the sheet of paper from the distributor cylinder E. It is desirable that the shoe 4'? of the gripper shall be positively guided in passing about the cylinder at the advance end of the conveyor. Accordingly, there is provided a guide-hood 63 at the advance end of the conveyor'within which the shoe 4:? travels in making the circuit about the axis of the cylinder. There is also provided a guide-bar 64.- associated with the conveyor, beneath which the shoe 4:? travels as it approaches the cylinder at the feed end of the conveyor. The guide member 64: extends to a point near the axis of the cylinder; and to hold the shoe in its proper position as it travels about the axis of the cylinder, the cylinder is equipped with a curved or segmental shoe 65 which travels with the cylinder and which makes contact with the upper edge of the shoe, as viewed in Fig. 3. These devices release serve to maintain the shoe'in proper position, as it is carried about the cylinder n J M hr.

veyors, thus serving to complete the circle J of the cylinder. Some out these shafts equipped at intervals with collars 67 h ing bearings 67* adaptedto support long i tudinal tapes 68. Qthers of the are equipped with collars 69 having lugs 6'9 adapted to be engaged by the loops ends of the tape in the manner shown in Fig. 21. The ends of the tape are passed through the looped portions 70 of clips 70* which slip over the lugs 6% lugs 69 are undercut at their inner sides, so that the loops 70 will slip into the undercut portions and draw the tape under the projecting lips of the lugs 69.

This is efi'ected by means of screws 71 which have threaded connection with the clips 76*, the tips of the screws bearing against the outer surfaces of the lugs, so that the loops 70 will be drawn under the lips of the lugs 69 as the screws are turned in. Tt will be understood from-Fig. t that the tapes 68 are properly spaced to support the sheet of paper as it is carried rearwardly by the endless conveyor of which the tapes form a part. While Fig. 3 shows a group of three cross-"bars equipped at intervals with lugs adapted to support the tapes over the segmental recess 60, it will be under stood that individual bars equipped with tape-supporting lugs may be applied to the carrier-chains at suitable intervals to support the tapes. The cross-bars of the carrier may be connected at their ends with the links of the carrier-chains in any suitable manner. As may be understood from Fig. 3, the shoes 47 which serve as mount= ings for the ripper devices are connected. with the chalns by extending two of the link pivots 72 and riveting them to the shoes. Associated with the sheet-receiving plat-forms G and G are jogging-devices H and H which serve to properly stack the sheets of paper as they drop upon the platform. These devices are of the same construction and will be understood from Figs. 1 and 17 to 20, inclusive, which show the device H. This device comprises a pair of cross-bars or shafts 73 which are rigidly supported by the frame A; a pair of longitudinal bars 74: adjustably mounted on The inlg1 adjusted toward and away from each r; a pair of cross-bars 75 ad'ustably connected with the longitudinal ars 74 by means of clips 76, thus forming a rectangular frame throu h which the sheets may fall, this frame eing capable of adjustment to accommodaate sheets of different sizes; adjustable clips or blocks 77 mounted .on the bars of said frame; reciprocable jog ing-members 78 provided with shanks 'i which extend through suitable guides in the blocks 77; bell-crank levers 79 mounted on pivots 80 carried by the blocks 77, the levers 79 being connected by links 81 with the shanks 78; and a sys- -b tem of actuating rods 82 connected with and serving to oscillate the bell-crank levers and thus reciprocate the jogging-members 78, one of the rods 82 being actuated by a bellcrank lever 83, which, in turn, is actuated by a cross-rod 84.

The rod 84 is reciprocated by means of the following mechanism: The shaft of the cylinder 38 is equipped with a pinion 85 i which actuates a gear 86 with which is connected a pitman-rod 87 which. serves to oscillate a bell-cranklever 88. The bellcrank lever 88. works in a vertical plane and serves to actuate a link 89 which actuates a bell-crank lever 90 which works in a horizontal plane. The rod 184; is extended past the side frame of the machine and connected with the bell-crank lever 90, and thus the system of rods 82 is actuated through the medium of the rod 84:.

The platform-support G is supported by chains'91 which are paid out by mechanism of a well-known type, which includes a ratchet device 92 and a connecting-rod 93 which is actuated by the bell-crank lever 88. The connecting-rod 98 is connected directly with an oscillating-arm which carries a friction-pawl 94. The connection between said arm and the link 93 is adjustable, as indicated at 95, so that the movement may be very finely regulated, thus 'enabling the platform G to be lowered just the thickness of a sheet of paper at each operation of the. pawl.

The mechanism for automatically lowering the frame G is of the same character and is designated generally by the reference character 96.

It should be stated, with reference to Fig. 17, that the joggers 78, alternately, reciprocate in opposite directions. This is accomplished by properly locating the bell-crank levers 79 with reference .to their points of pivotal support 80. It may be stated, also,

" that at one side of the frame, one of the bars is equiped with fixed vertical guides 75 which serve to engage the lateral edges of the sheets as they are dropped upon the support G. Y

veyor and by the The operation of the machine may be stated briefly. .The printing mechanism has the tympan cylinder B provided with a plurality of impression surfaces (in this case two), the press thus being adapted to produce a printed sheet from each impression sur ace; and the delivery mechanism is provided with a pluralityof endless conveyors (in this case two), each adapted to receive the printed sheets from a particular impression surface of the tympan cylinder. All of the sheets from the tympan glinder are carried by the transfer cylinder to the distributin cylinder .16. .The grippers of the cylin er are adapted to e opened at different points by means of the shiftable cams 22 and 23, which cause the sheets to be released at the proper points to enable themto be taken up, in alternation, by the grippers of the upper endless conippers of the lower end less conveyor. ach endless conveyor is equipped at proper intervals with gripper will bepresented at the proper instant to receive a sheet from the distributing c linder E. The printed surfaces of the s sets are outwardly turned on the impression cylinder B, are inwardly. turned on the transfer cylinder D, are outwardly turned on the distributing cylinder E, and are turned downwardly on the upper sides of the endless conveyors. The sheets are carproper instants, the grippers are releasedv by the cams 58 and 59, thus permitting the sheets to drop. The system of joggers devices so disposed and timed that a gripper shown in Figs. 17 to 20, inclusive, operates to properly stackthe sheets as they drop upon the platforms The movement of the joggers is effected by the mechanism 85 to 90, inclusive, and the platforms Grand G are automatically lowered the thickness of a sheet at each operation by means of the mechanism 93-94, in one case, and the mechanism 96, in the other case.

The delive mechanism is capable of operating at su ciently high speed to take care of the output of the press. This is accomplished by the employment of a lurality of endless conveyors and suitable d istributing means for delivering the sheets to said conveyors. The operation is such as to afford the ink some time to dry during the period of transfer from the pan cylinder to the Stacks 9i sheets; and, when the

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