US1087473A

US1087473A - Printing-press.

Info

Publication number: US1087473A
Application number: US59859410A
Authority: US
Inventors: Matthew Vierengel
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-12-21
Filing date: 1910-12-21
Publication date: 1914-02-17
Anticipated expiration: 1931-02-17

Description

Patented Feb. 17, 1914.

4 SHEETS-BEBET 1.

M. VIERENGBL.

PRINTING PRESS.- APPLICATION FILED DBO 21, 1910.

Patented Feb. 17, 1914.

4 SHEETS-SHEET 3.

M. VIERENGEL. PRINTING PRESS.

! APPLICATION FILED 1120.21, 1910 a Patented Feb. 17, 1914.

4 SHEETS- SHEET 4.

/ o n-H 1 A ETC;

MATTHEW VIERENGEL, or BROOKLYN, NEW YORK.

PRINTING-PRESS.

Specification of Letters .Patent.

Patented Feb. 17,1914.

Application filed December 21, 1910. Serial No. 598,594.

To all whom it may concern Be it known that I, MArrHnw Vmnnnenn, a citizen of the United States, and a resident of Brooklyn, inthe county of Kings and State of New York, have invented certain new and useful Improvements in Print.- ing-Presses, of which the following is a specification.

The present invention relates to improvements in printing presses of the type having a flat form mounted in a stationary bed and a. traveling impression cylinder by which successive sheets of paper are taken from the feeding-in devices and carried in printing contact with the form and delivered therefrom to suitable delivery mechanism.

The main object of my present invention is to produce a printing press of compact construction capable of rapid work upon sheets of various sizes, in which the working parts are perfectly free and'accessible for adjustment and repair. In accomplishing this object, I mount the traveling impression cylinder in the upper ends of long slotted arms or levers which are journaled at their lower ends in automatically adjust-able bearings by which the traveling cylinder is held down in engagement with the form during the printing movement and is supported out of contact with the form during the return movement. These cylinder-carrying arms or levers are formed with longitudinal slots between their ends in which engage sliding blocks carried by cranks mounted upon the main shaft of the machine. By this crank movement having sliding engagement with the eylinder-carrying arms or levers, the cylinder is caused to have a relatively slow forward movement in contact with the printing form and a relatively rapid return movement raised out of contact with said form. The relatively slow impression movement is of great importance in improving the quality of the printing.

The described structure enables me, in the interest of compactness, to mount the heavy parts of the mechanism close together heneath the bed of the press, so as to produce a press which is relatively short for the length of sheets to be printed.

In addition to the normal automatic adjustment of the bearings of said cylindercarrying arms, to cause the cylinder to be periodically lowered and raised, I prefer to provide an automatic mechanism for holding the cylinder away from the form on its forward stroke in the absence of a sheet. This automatic mechanism comprises a- Sheet detecting device and mechanism controlled thereby for effecting the elevation of the bearings of said cylinder-carrying arms when a sheet fails to reach position upon the feed table in time to be taken by the cylindergi'ippers at the start of its forward stroke,

In theimproved press, the form inking rollers are mounted above a traveling carriage connected through a link with a geared-up crank disk so as to impart to the inking rollers a to andfro motion of greater extent than the reciprocation of the impression cylinder, with the result that the form inking rollers can be driven forwardand back by the carrying arms or levers of the impression cylinder and caused to move over the ink distributing surface and the entire extent of the printing form, while the impression cylinder moves forward and back over the form only.

The delivery mechanism which takes the sheets from the traveling impression cylinder and delivers them from the press includes a. transfer gripper which reaches into a central recess'in the impression cylinder and engages the printed sheet on its leading edge just as the impression cylinder releases it, and conveys the leading edge of the sheet upwardly into the bight of delivery grippers which are mounted upon traveling chains which are arranged to convey the sheets to a series of removable delivery rollers which pass the sheets into the receiving box. The construction and arrangement of the delivery mechanism of my improved press are such that any size sheet within the capacity of the press can be accurately delivered without altering the adjustment of parts.

I in readiness to take a sheet from the feeding-in devices. Fig. 2 is a plan view of the same with the upper part of the frame and the delivery mechanism omitted for the sake of clearness. l ig. E} is a view similar to Fig. 1,'tal\'en'from the opposite side of the machine, showing the automatic impression controlling mechanism in tripped position, and the cylinder and sheet delivery mechanism in the position assumed at the completion of the printing operation in the act of transferring a printed sheet to the delivery mechanism. Fig. i is a sectional plan view taken on the line 4-4 of Fig. 3. Fig. 5 is a vertical longitndimtl sectional view of the machine showing the means for-controlling the operation of the movable bearings of the cylinderearrying arms or levers, the parts bein in the same position as shown in Fig. 1. l ig. (3 is a detail plan view of the main parts of the same mechanism. Fig. 7 is a detailfront elevation of part of the. same n'leehanism. Fig. 8 is a similar view on a larger scale. .l igs. 9 and 10 are detail views of parts of the automatic sheet detecting impression. ctmtrolling mechanism. Figs. 11, 12 and 13 are detail views of the several controlling cams of the impression controlling mechanism. Fig. 14 is a vertical longitudinal sectional elevation on a larger scale, of the sheet delivery mechanism. Fig. 15 is a plan view of the same, and Fig. 16 is a de- -tailview similar tr Fig. 14: showing the main parts in shertransferring. position. l ig. 17 shows the cylinder gripper in detail.

The improved printing press is built upon a suitable fraIm-.\vork arranged to properly support the operative parts, said framework comprising mainly the base 1, upon which I secure the main side frames 2. the auxiliary end extension side frames 2-, and t and the overhanging top frame 5, all for the purpose which will hereinafter appear.

Suitably jonrnaled in and extending between the main side frames 2 is the main power shaft 3 shown with a pulley 7 secured to one end and a hand wheel 8 secured to the opposite end. This driving shaft (3 may be .nrovidml nith fast and loose pulleys (not shown) or with any other suitable well known mechanisl'n for imparting driving power to it.

' Centrally keyed upon theanain shaft (5 is a driving pinion t) which meshes with and drives a large gear wheel 10 centrally keyed upon a transverse shaft 11 which is suitably jmirnaled in the main side frames 2. The shaft 11 carries upon its opposite ends.the

crank disks 12 which are supported outside of and parallel with the side frames 2. Each of these crank disks 12 has a crank pin 13 upon which is freely jonrnaled a bearing block 1 1 operating in the inclosed longitudinal slot 15 of a. cylinder-carrying arm or lever 16. The two cylinder-carrying arms or levers 10 are arranged upon opposite sides of the press and are journaled at theirlower ends upon adjustable bearings in the manner hereinafter described. The upper ends of the arms or levers 16 are provided with bearing boxes 17 in which are journaled the ends of the shaft 18 of the traveling impression cylinder 19. The cylinder 19 is fixed upon the shaft 18 and has secured to its opposite ends inside of the arms or levers 16 the gears 20 which are supported in constant mesh with parallel rack bars 21 secured to the upper edges of the side fran'ies 52, so that the cylinder 12) will be caused to rotate as it travels longitudinally of the machine through the action o tilt arms or levers 16.

The in'ipression cylinder 19 is formed with the usual cavity it) in which is freely journaled a gripper shaft 19 carrying a series of grippers 19" which are adapted to grip a sheet against the surface of the cylinder along the edge It). Each gripper 19 carries a sheet registering block 1t) which adjustable inwardly and outwardly upon the gripper, as shown in Fig.17. These independently adjustable registering blocks enable the operator to accurately register sheetsnpon the cylinder. A torsion spring 1!) surrounds the gripper shaft 1t) at one end and has its opposite ends secured respectively to the cylinder and-the shaft so as to give the grippers a normal spring-closing tendency. The gripper shaft 15)" has at one end a crank arm 19 carrying antifriction roller 19 which is adapted to be engaged with suitable. gri pct-opening devices located at proper points in' its path to open the grippers preparatory to the'feedingdn and the delivery of the sheet. The gripper-opening devices may be in the form of stationary cams or shoulders or other suitable devices which are commonly used for this purpose. I prefer to employ, at the re eeiviug end of the machine a movable cam bar 525 for the operation of the cylinder grippers. This movable cam bar 25 is shown in Figs. 2 and 3 of the drawings, and consists of-a bar having a cam nose 25 supported in position to engage the anti-friction roller 19 and formed with a longitudinal slot. 25 through which passes a screw or bolt 25" seated in the extension end frame 2-). The end of the cam bar 25 is formed with a yoke 25 which straddles and slides upon.

the lower feed shaft 30 (hereim fter referred to) and adjacent to the yoke end of the bar is'mounted an anti-friction roller 25 running in peripheral engagement with the controlling cam 26 keyed to the shaft 30. A

- s )rin 25 connects the cam bar 25 with the frame 3 to hold the anti-friction roller 25 in engagement with the cam 26.

The purpose in providing the. movable cam bar 25 for operating the cylinder grip; pers is to effect a more rapid closing of the grippers upon the sheet and to make the closing operation independent of the movement of the cylinder. This feature is of importance in the interest of accurate reg istry of the sheets upon the impression cylmachine covered by my Patent No. 1,000,058,

granted to me August 8th, 1911. In the drawings 1 have not attempted to show an automatic feeding machine, but have represented a feed shaft 30 journalcd in the end frames 3 and driven by any suitable means (not shown). I provide, a belt pulley or cylinder 31 mounted upon shaft 30 and carrying a series of feed belts 32 which pass around the idler pulleys 83 journalcd in the frames 3 adjacent to the sheet supporting and registering plate 40. The upper surfaces of the belts 32 carry sheets into reg istered position from which they are taken by the impression cylinder above described. The feeding-in of the sheets may be assisted by an upper series of belts supported upon two series of

pulleys

80 and 37 as shown. Y

In addition to the sheetcarrying belts 82 I provide one or more longitudinal sheetsupporting strips such as shown at 40 for effectively sustaining the successive sheets for the action of the sheet detecting impression controlling mechanism which will hercinafter be described. The usual front guides for arresting the sheet in registered position are not shown, but it will be understood that they are employed as in the ordinary printing press. The use of sheet rcg istering mechanism will be optional with the operator and will depend largely upon the aceu any of the f eder employed for supplying sheets to the press. No side registering mechanism is shown as said mechanism forms no part of my present invention.

is the bed for receiving the printing is an ink distributing roller 48 journalcd SO in bearings 4-9 slidingly mounted upon rock arms 50 and held in position by tension springs 51 connecting the bearing rods 49 withthe rock arms 50'so that roller 48 will be held in engagement with the plate 47 as it reciprocates forward and backward the machine frame extension 4;.

thereo-ver. The rock arms 50 are mounted upon a rock shaft 52 suitably journalcd in A rod 53 connects .the rock arms 50 and a link 54 extends from the rod 53 to a lever 55 journaled upon a transverse rod or shaft mounted in the side frames 2. An antifriction roller 57 journalcd upon the lever operates in a groove cam 58 keyed to the shaft 11 alongside of the main gear 10.

(30 is an ink fountain in which operates the fountain roller 61 provided with the usual ratchet wheel 62 engaged by the pawl 03 mounted upon a rock arm (i i and connected by link 65 with a rock arm 06 formed integral with and extending from the rock arm 50 at its journal 52. By this means the ink fountain roller is intermittently rotated for supplying ink to the transfer roller 67 which runs in peripheral contact with the fountain roller and with an ink distributing roller (58 supported adjacent to the rear edge of the ink distributing plate 47. In addition to the inking rollers described it Willbe understood that a plurality of breaking-up rollers are employed which run in peripheral engagement with the distributing roller 68 to keep the ink properly worked up upon roller (58. The transfer roller 67, ink distributing roller (58 and the cooperating rollers may be dri'ven' in any suitable manner, such, for instance, as by the means shown, in which a sprocket wheel 69 is mounted upon the shaft of roller 67 and engaged by a sprocket chain 70 driven from the sprocket wheel '71 keyed to a shaft 72 journalcd in the side frames of the machine and provided with a central pinion 7 3 which meshes with and is driven by the main gear 10.

75 are the form inking rollers and 76 the metal distributing roller cooperating there with. The

rollers

75 and 76 are journaled in the stands or frames 77 mounted to slide upon the top flanges 78 of the side frames of the machine. The

rollers

75 and 70 are provided at one end with intermeshing pinions 79, the lower ones of which mesh with one of the stationary rack bars 21 as the stands 77 are reciprocated longitudinally of the machine for the purpose of positively rotating the rollers when they are passing in contact with the printing form and distributing plate. Each of the stands 77 has projecting laterally from it a bar 80 to which is pivoted a link 81 journalcd at its opposite end upon a crank pin 82 carried by a crank disk 83 journalcd upon the face of one of the cylinder-carrying arms or levers 10. Each of the crank disks 83 is formed with a segment of gear teeth 84 in constant mesh with the pinions 85 keyed to the projecting ends of cylinder shaft 18. From this described arrangement, it will be observed that the form inking rollers are moved forward and back over the form and ink distributing plate 47, the ink distributing roller 48 being rolled over the inkdistributing surface 47 and into peripheral contact with the distributing roller 68 totake ink from the roller 68 and distribute it over the plate 4:7

I from which it is supplied to the traveling form inking rollers.

The form inking rollers receive the direct forward and back thrust of the cylindercarrying arms or levers 16 and in addition to this direct moven'ient, they have the added throw of the crank 82 comim from the pinion 85 so that the form inking rollers will travel farther on each fomvard and,

backward stroke than the impression cylinder, thereby enablm them to el'lectively pass over the entire surface of the form and of the ink distributing plate 17, whereas the extent of travel of the impression cylinder is by which the.- bar and parts supported thereby are suspended. 'lhese links are pivotally mounted at their upper ends .upon the eccentric studs 96 which are adjustably mounted in the free ends of arms 97 projecting from a yoke bar 98. The studs 96 can be rotated in their bearings in arms 97 to raise or lower the links 95 upon the arms 97, or in other words,.to shorten or lengthen the distance of the shaft 90 from the supporting arms 97. c

The yoke bar 98 which connects the arms 97 is pivotally mounted at its ends upon the. studs US) jourualcd in the eccentric bushings 100 which have suitable bearings in the side frames 2 as indicated at 101.- These eccentric bushings '10tl have rigid arms 102 ex tending forwardly from them and a rod or bar 1035 connects the arms 102 so as to make a single. struct ure of the connected bushings whereby they will operate in unison.

I 103 is a hook pivotally mounted upon a rod'ltni se ured in the side. frames of the machine and provided with an actuating spring it)? which normally holds it in latched cngagennjalt with the rod 103 for retaining the connected eccentric bushings 100 against movement in the frame. \Vhcn said bearing'lmshings 100 are held by the latching hook 105 as described, said bushings perform the function of stationary bearings for the yoke J7, 98. This .yolie bar 98 is provided with an upwardly projecting rigid arm 98" carrying at its upper end. an antifriction roller 98 which runs in the groove cam 109 mounted upon the shaft 11 alongside of the main gear 10. The rotation of this shaft 11 causes cam 109 to act through arm 98" to rock the yoke-shaped

frame

97, 98 on its bearings 91) for raising and lowering the shaft or bar 90 constituting the bearings for the lower ends of the cylinder-carrying arms or levers 16 for holding the cylindcr in printing contact with the form during its forward motion and for supporting the cylinder out of contact with the form during its return movement.

.ln addition to the described automatic adjustment of the bearing supports of the cylinder-carrying arms or levers 16 during the normal operation of the printing press, I have provided an impression throw-out mechanism controlled by the presence or absence of a sheet upon the feed table at the registering point. This mechanism opcrates through the eccentric bearing bushings 100 above described. As already pointed out, 'the connected bearing bushings 100 are held in normal position by the engagement of the spring actuated hook 105 with the rod or bar 103.

115 is a transverse cam shaft suitably journalcd in the side frames 2 and carrying at one end a gear wheel 11(3 meshing 'with and driven by a pinion ll? upon the power shaft (3. This cam shaft 115 has rigidly mounted upon it three cams 11,8, 119 and 1.20 for the purpose which will presently appear.

121 is a reciprocating pitman formed adjacent to one end with an enlongated guide slot 122 through which the cam shaft 115 extend for guiding the pi'tman 121 in its reciprocations. Anti-friction rollers 123 are journaled upon studs projecting laterally from the pitman 121 at opposite ends of the guide slot 122 in position to engage the periphery of the cam 118 at diametrically opposite points so that this pitman'lZl will be positively moved upwardly and downwardly parallel with its length. In addition to the longitudinal reciprocation 0f the pitman 121 it is capable of moving around the shaft 115 to a slight extent under the control'oit. the mechanism hcreina ftcr described. The lower end of the pitman 121 is formed with a book 1251; which is adapted to be latched into engagement with the transverse rod or bar 103 under certain conditions hereinafter explained. The pitman 121 is in the same longitudinal plane as the hook 105 above referred to, so that movement. of the pitman toward hook 105 will throw said parts together for disengaging the hook 105 from the rod or bar 103.

130 is a lever mounted upon a cross shaft 131 which is suitably journaled in the side frames 2 to support the lever 130 adjacent to the pitman 121. In the lower end of the lever 130 is mounted a pin 152 which pro iects laterally across the lower hook end mergers the hook end of pitinan 121 rearwardly into engagement with said laterally projecting pin 132. The arm of the lever 130 above its shaft- 131 is bifurcated to form two

arms

131 and 131 which are formed with trans verse'openings through them to receive an adjustable bolt 135 carrying at its outer end an anti-friction roller 136. Secured upon the bolt 135 between the

arms

131 and 131, is an adjustable collar 137 which confines between it and the arm 131 an expansion spring 138 which tends to move the bolt longitudinally in its bearings to place the anti-friction roller 136 in the plane of the tram 119 above referred to. This adjustable collar .13? has a guide pin 139 projecting from it into a guide slot 14:0 formed through thebifurcatcd arm of the lever 130. This guide pin 139 prevents the bolt 135 from turn ing inits bearings in the arms 131*" and 131". The bolt 135 also carries a laterally projecting pin or lug 14-1 which normally engages a shoulder 142 of the latcharm 143 which is pivoted at 1*14. A. spring l lcarranged between the arm 131 and latch 1 13 gives the latter a normal spring tendency to more outwardly into the path of the lug 141 referred to. The shoulder 1&2 has an inclined face 14:2 over which the pin 141 travels for depressing the latch 143 when the bolt is being reset in the manner presently to be explained.

' The latch arm 143 projects into the path of a vertically movable tripping arm 150 which is pivoted. at 151 to a bracket arm 152 and is supported and operated by a rod'153 extending upward to and pivotally' connected with a rock arm 154: mounted upon a rock shaft 155 suitably journaled in the extension top frame 5 of the machine- This rock shaft 155 carries between its ends another rearwardly projecting bifurcated rock arm 158 in. which arepivotally supported at 157 the vertical feeler rods or pins 159 which'pass freely through and are guided by the

bracket plates

160 and 161 and are supported thereby in vertical alinement with a series of registry holes 162 formed through the sheet supporting plate 40. When a sheet is 1 present in registered position above the plate 40 it will cover the holes1162 and preventthe pins-or rods 159 entering the holes, the pins 'and connected parts being of such light weight/that tne strength of ordinary paper is sufiicient to support them. When the sheet detecting pins or rods 159 are held upwardly by engagement with a sheet, the trip ping arm 150 is held out of engagement with the latch 143, but when a sheet is absent at themoment of lowering the detecting pins or rods, said pins or rods will enter the registering holes 162 and allow tripping lever sultthat the said cam 119 will rock the le-- v er 130 causing it to move the hook pitman I 121 inwardly. into engagement With the hook 105 for disengaging hook 105 from the rod or bar 103 and throwing the hook 124: into engagement with said rod or bar 103. This action is immediately followed by the cam 118 forcing pitman 121 downwardly for rocking the connected eccentric bushings 100 in their bearings for raising the journals of the

yoke frame

97, 98 and thereby elevating the journal supports of the'cylinder-carrying arms or levers 10 so as to hold the cylinder away from the form as it travels for- Wardly'upon its printing stroke. Immediately following the operation of the mechanism in tripped position as just described, the parts are returned to normal position in readiness for the printing operation or a repetition of the idle operation in trippedposition. It will be understood that the sheet detecting rodsor pins 159 are elevated and the tripping lever 150 disengaged from the latch arm 1&3 by the action of cam 120. Thebolt 135 carrying anti-friction roller 138 is returned to its normal position by the engagement of a short cam 119 with the collar 13?, again compressing spring 138 and forcing the pin or lug 14:1 behind'the shoulder 142 to retain -the roller 136 out of the path of thecam 119. When the parts mentioned are returned to their normal position in the manner explained, the eccentric bearing bush1ngs100 are also sh fted to their normal posit on vby the action of cam 118 upon pitm an 121, the p-itman being disengaged from bar 103 by its spring 133 and the hook 105 being thrown into engagement with said bar 103 by the action of its spring 107. This automatic sheet'detecting impression-controlling mechanism is arranged to operate periodically to agree with the o-.p eration of the other parts of the machine so that every time a sheet is 'dueto'arrive in registered position for the impression cylinder, the sheet detecting pinsor-rods will be lowered to detect the presence 'or ab-' sence of a sheet. This periodic action of the detecting pins or rodsfis effected by means of a controlling "cam whichnor mally engages an anti-friction roller 165 mounted upon thetripping lever 150/ This cam 120 holdsthe' tripping lever and con.- nected detecting pins or rods inelevated position, but once in every revolution of the the tri in lever 150and connected 7 b a parts are gently lowered with. the result that inthe eventot a sheet being in proper registered position. the downward. 1nove-' ment of the ykonnfected parts will be arrested before the mpre'sion controlling mechanism is set into 0 eration, wh reas in the event of the absence of a shee at the m0- ment of actionyof the detecting devices, said ment of sheets through the press from the feeding table to the delivery end of the machine. In Fig. l of the drawings, the impression cylinder 19 is shown with the grippers 19 open in readiness to receive a sheet to be printed. In Fig. 3. the impression cylinder is shown at the end of its forward or printing stroke in position to deliver a Jprmted sheet-to the transfer mechanism which takes the sheet to the delivery mechanism proper. The main parts are shown in the same position on a larger scale in Fig. 16 ofth drawings. Freely ournaled at its opposite ends in the top extension frame 5 is a transverse shaft 175 carrying at one end a segment gear 17 6 with which meshes a reciprocating rack bar 177 held in engagement therewith by a guide plate 178. The rack bar 177 is pivoted at 179 to the upper end of a rock arm 180 keyed to a transverse shaft 181 which is suitably journaled in the side frames of the machine, and carries an inwardly projecting rock arm 182 provided at its free end with an anti-friction roller 183 operating in the groove cam 184 keyed to the shaft 11. By this means the shaft 175 is rocked to and fro for the purpose which will presently appear. The shaft 175 has pinned to it the radial arms 185 in which is freely journaled the transfer gripper shaft 186. A gripper plate or bar 187 is secured at its ends to the arms 185 and supported thereby parallel with the gripper shaft. 186 in position to support the leading edges of the slut-ts that are gripped by gripp'ers carried by shaft 186. This shaft 186 carries a primary gripper and two or more auxiliary grippers for the purpose which will presently appear. 190 is the primary gripper loosely mounted upon the shaft 186 and having an inwardly projecting heel 191 190 and the shaft so as to give the gripper 190 a closing tendency wh1ch is controlled by the stationary cam 193. Upon opposite sides of the primary gripper 90 I arrange the auxiliary grippers 197 which are adjustably secured to the shaft 186. A torsion spring 198 encircles the shaft 1.86 and has its opposite ends secured respectively to the shaft 186 and one of the radial arms 185, so as to give the auxiliary grippers a closing tendency. At one end of shaft 1.86 I mount a rock arm 199 carrying an anti-friction roller which operates in peripheral engagement with a stationary controlling cam 201 secured to. the frame of the machine.

The gripping edge 19 of the impression cylinder 19 is cut out at 19 midway between its ends to provide a recess into which the primary gripper 190 may be projected when asheet is transferred from the impression cylinder to the transferring grippers. Fig. 16 of the drawings shows the position of partsduring the transfer of a sheet from the cylinder to the transferring grippers. This cut-out 19 enables the primary transfer gripper 190 to project in under the leading edge of the sheet beyond the cylinder grippers to get a good positive hold upon the sheet at the moment that the cylinder grippers release it, the stationary cam 193 being so shaped and arranged with reference to the primary gripper that it will close upon the sheet the instant the cylinder grippers are opened to release the sheet. To open the cylinder grippers in the sheettransferring position, I provide a stationary cam plate or lug 191 supported upon a depending plate in position to engage the antifriction roller 19 at the proper moment to open. the cylinder grippers.

\Vhen the sheet is transferred from the cylinder grippers to the primary transferring gripper 190, the auxiliary transfer grippers are heldin open position by their controlling cam 201. The instant, however, that the sheet is under the control of the primary gripper 190, the auxiliary transfer grippers 197 are clamped upon the leading 'edge of the sheet; to more firmly grip it to the transferring device, so as to accurately convey the sheet to the delivery mechanism which will. now be described.

205 and 296 are transverse shaft-s suitably journaled in the top frame 5 of the machine and supporting between their ends belt rollers 207 upon which are mounted the endless conveying belts 208.. Outside of the belt rollers 207 the shafts Q05 and 206 have keyed to them the sprocket wheels 210 carrying the endless Sprocket chains 211. Each of these sprocket chains 211 includes a double-armed extension link 212 in which are mounted the gripper shafts F213 and .314. The shaft 21 1 carries collars or rollers 215 to constitute surfaces against which gripper fingers act to clamp a sheet. The shaft 213 is the gripper shaft proper, it being freely-journaled atits opposite ends in the extension links 212 and having adjustably secured to it between its ends the gripper fingers 216 which are arranged in the same vertical planes as the collars or rollers 215. A torsion spring 217 encircles the shaft 213 and has its opposite ends connected respectively with one of the extension links 212 and with an adjustable collar 218 secured to the shaft 213. This spring tends to keep the gripper fingers 216 closed against the rollers or collars 215. The shaft 213 has at one end a rock arm 219 carrying-an anti-friction roller 220 which is adapted to pass over the surface of a stationary cam 221 secured to the top frame 5 adjacent to one end of shaft 205 in the path of said anti-friction roller. The cam 221 opens and closes the delivery grippers for taking a sheet from the transferring mechanism above described. Another stationary cam is secured to the top frame 5 adja I cent to the shaft 206 in the path of antifriction-roller 220 so as to open the delivery grippers 216 at the proper moment to release a sheet.

It will be observed with particular reference to Fig. of the drawings that the gripper bar or plate 187 of thetransferring mechanism is cut out along its gripping edge between the primary gripper 190 and the auxiliary transfer grippers 197 to permit the delivery grippers 21.6 to project in beyond the leading edge of a sheet to get a good hold thereon as the sheet is transferred from the transferring mechanism to the delivery gripper mechanism. This operation of transferring sheets to the delivery grippers 216 is illustrated in Fig. 14 of the drawings.

Keyed to one end of the shaft 205 is a sprocket wheel 230 over which operates a sprocket chain 231 driven from a sprocket wheel 232 mounted on a short shaft 233 jour naled in-thc side frame 2 and provided witha pinion 23 i meshing with and driven by a similar pinion keyed to the shaft Y2 ahovc referred to. By this means the delivery belts 208 and gripper chains 211 are operated. It will be understood that the sheet to be delivered is engaged by the grippers 216 and carried rearwardly thereby, the main body of the sheet resting upon the conveying belts 208 which travel at the same rate of speed as the delivery grippers. There may be any number of delivery grippers carried by the delivery chains 211 depending upon the size of thepress. I have shown only two of such grippers which are arrangednpon opposite sides of the vertical longitudinal plane of the machine. These grippers can accurately convey and deliver any size sheet within the capacity of the press since a sheet of any size is gripped upon opposite sides of the central line and is properly supported during the delivery operation.

v p v

240, 240 indicate a plurality of delivery rollers which are removably mounted in journal sockets 241 in the rearwardly extending frame bars 242. Each of these rollers is provided with a pinion 2 15 which meshes with adjacent pinions 246 journaled upon studs in the extension side frame, said train of pinions, some of which are upon the rollers and others of which are journaled upon the frame, being driven by an intermediate gear 247 driven from agear 2 18* keyed to the shaft 206 above referred to.

The sheets are carried by the delivery mechanism and deposited upon the series of rollers 240 which are designed to carry them into the delivery box or receivingframe in position to be acted upon by some suitable jogging mechanism. The sheet receiving frame and jogging mechanism are not shown in the accompanying drawings. Any number of the rollers 2 10 may be employed depending upon the size of the sheet to be delivered, and it will be understood that when long sheets are being printed, one or more of the delivery rollers 240 may be removed so as to allow sufficient space for the deposit of the sheets in the receiving frame, whereas in printing short sheets, the whole series of rollers will be utilized for properly delivering the sheets to the jogging mecha nism.

I have not claimed in the present application the structures of the sheet engaging rollers and the sheet delivery mechanism hcreinbefore described.

What I claim is:

1. ln a printing press, the combination of a suital'ile frame, a stationary form bed thereon, a rotary impression cylinder adapted to travel forward and back over said form bed. operating means adapted to cause said impression cylinder to have a relatively slow forward movement and a relatively. fast return movement and impression regulating means acting upon a part of said operating means.

2. In a printing press, the combination of a suitable frame, a form bcd thereon, a rotary impression cylinder adapted to travel forward and back over said form bed, operating means including rock arms or levers in the upper ends of which said cylinder is journaled, adapted to cause said impression cylinder to have a relatively slow forward movement and a relatively fast return movement, and impression controlling means act's mg upon the lower ends of said rock arms .or levers.

the upper part of said frame, an impression cylinder adapted to roll forward and back over said bed, rock arms or levers having hearings in their upper ends in which said llIlpl'GSSlOIh cylinder 1s ournaled, bearings in the lower part of said frame upon Which and raise said cylinder and maintain it elevated out of contact with said bed on its return stroke, means controlled by the presence or absence of a sheet acting upon said impression controlling means, and driving means engaging said rock arms or levers between their ends.

at. In a printing press, the combination of a frame having a stationary form bed, an impressioncylinder adapted to travel for ward and back over said bed, rock arms or levers in which said impression cylinder is journaled, bearings upon which said rock arms or levers are mounted, impression controlling means operating upon the lower ends of said rock arms or levers for raising and lowering said cylinder with relation to said form bed, sheet controlled mechanism for the impression controlling means, and driving cranks engaging said rock arms or levers.

- 5 ln aprinting press, the combination of a ame, a stationary form bed mounted herein, an impression cylinder adapted to travel forward and back oversaid bed, longitzudinally slotted rock arms or levers having bearings in their upper ends in which said impression cylh'ider is journaled, bearings upon which the lower ends of said rock arms or levers are mounted, means for automatically raising and lowering said. hear? ings at thelower' ends of said rock arms or levers for holding the impression cylinder in engagement with the form on its impression stroke and. out of engagement with the form on its return stroke, and driving cranks engaging the'slots of said rock arms or levers between their ends,

6. In a printing press, the combination of a. frame, a stationary form bed, a pair of rock arms or levers mounted upon opposite sides of said frame, vertically adjustable bearings for the lower ends of said rock arms or levers, an impression cylinder journaled in the upper ends of said rock arms or levers above said lied, operating means en- {raging said rock arms or levers between their ends, means for rotating said impression rylincler as it is moved forward and back over the form bed, and means for anully raising and lowering said bearholding the impression cylinder in I incnt with the form on its impression stroke and out of engagement with the form on its return stroke.

-inder impression impression controlling mechanism eonnected with said bearings.

8. In a printing press, the combination of a suitable frame, a stationary form bed in said frame, an impression cylinder adapted to rotate and travel forward and back over said form bed longitudinally slotted rock arms or levers having journal boxes in their upper ends for said impression cylinder, vertically adjustable bearings supporting the lower ends of said rock arms or levers, a shaft, disks mounted upon said shaft, crank pins upon said disks, and blocks mounted upon said crank pins and engaging the slots of said rock arms or levers.

9,111 a printing press, the combination of a suitable frame, a form bed in said frame, stationary rack bars upon said frame,

an impression cylinder adapted to rotate and trav.el forward and' back over said form, gears upon said cylinder meshing with said rack bars, longitudinally slotted rock arms or levershaving journal boxes in their upper ends for said impression cylinder, vertically adjustablc bearings supporting the lower ends of said rock arms or levers, a shaft, cranks mounted upon said shaft, and engaging, the slots of said rock arms or levers, and mechanism acting through the supportingbearings of said rock arms or l evers ,for controllingthe Cyl':

10. in a printing press,' the combination of a suitable frame, a stationary form bed,

form inking rollers movable forward'and back over said bed, a rotatable impression cylinder movable forward and back over said. bed, movable supports for said cylin= der, c'anks iournaled upon said supports and suitably connected with said form inking rollers, and multiplying 'gearing between. said cranks and said impression cylinder to cause said inking rollers to travel a greater distance than said cylinder.- I

11. In a printing press, the combination of a suitable frame, having a stationary 'form, a traveling carriage supporting form inking rollers which are'adapted to move over said form, an impression cyl1nder, roek arms or lovers in which the impression cylinder is journaled, means for rotating said impression cylinder as it moves forward and back over the form, cranks journaled upon said rock arms or levers, pitmen connecting the cranks with the form roller carriage, and gear ng betweenthe impression cylinder and said cranks.

12. In a printing press, the combination of a suitable frame, having a stationary form, rack bars upon said frame, a traveling carriage supporting form inking rollers which are adapted to move over said form, an impression cylinder, rock arms orlevers in which the impression cylinder is journaled, gears upon said impression cylinder meshing with said rack bars for rotating said impression cylinder as it moves forwardaiid back over the form, crank disks journaled upon said rock arms or levers, pitmen connectingthe cranks of said disks with the form roller carriage, and gearing between the impression cylinder and said crank disks.

13. In a printingpi-ess, the combination of a suitable framehaving a form supporting bed, an impression cylinder adapted to travel over said bed, rock arms or levers in which said impression cylinder is mounted, bearings supporting the lower ends of said rock arms or levers, a rocking frame upon which said bearings are supported, and means controlled by the presence or absence of a sheet for rocking said frame.

14, In a printing press, the combination of a suitable frame having'a form supporting bed, an impression cylinder adapted to travel oversaid bed,'.rock arms or levers in which said impression cylinder is mounted, bearings supporting the lower ends of said rock arms or levers, links upon which said bearings are mounted, a rocking yokeshaped frame from which said links are suspended, a rock arm extending from said yoke-shaped frame and a controlling cam engaging said rock arm for periodically rocking said frame,

15. In a printing press, the combination of a suitable frame having a form supporting bed, an impression cylinder adapted to travel over said bed, rock arms or levers in which said impression cylinder is mounted, bearings supporting the lower ends of said rock arms or levers, links upon which said bearings are mounted, a rocking yokeshaped frame, adjustable pivotal connections between said yoke-shaped frame and said links, a rock arm extending from said yoke-shaped frame, and a controlling cam engaging said rock arm for periodically rocking said frame.

16. In a printing press, the combination of a suitable frame having a form supporting bed, arms or levers arranged upon opposite sides of said frame, an impression cylinder journaled in the upper ends of said arms or levers, a rod or shaft pivotally supporting said arms or levers at their lower ends, means for rocking said arms or levers to carry the impression cylinder forwardly and backwardly over said form bed, means for rotating said'impression cylinder as it moves over said form bed, links supporting said rod or shaft, a pivotally mounted yokeshaped frame, pivotal connections between said. yoke-shaped frame and said links, a rock arm projecting from said yoke-shaped frame, and a cam'engaging said rock arm";

a sheet detecting device, and means controlled by the sheet detecting device for disengaging said retaining hook and shifting said eccentric hearings to move said cylinder supports.

18. In a printing press, the combination.

of a suitable frame, the cooperating impression cylinder and form, suitable supports for said impression cylinder, connected eccentric bearings for saidcylinder supports, a hook member normally engaging said connected eccentric bearings for holding them against movement, a pitman' member arranged to disengage said hook member from said connected bearings and shift said bear ings for raising said cylinder supports, and sheet controlled means for throwing said pitman into action.

19. In a printing press, the combination of a suitable frame, an impression cylinder,

suitable supports for said impression cylinder, connected eccentric bearings for said cylindersupports, a hook member holding said connected bearings in normal position, a pitman member adapted to move into engagement with said connected bearings and disengage said hook member therefrom, a

controlling lever adapted to move said pitman into engaged position, means for reciprocating said pitman, and automatically controlled means for operating said control.-

ling lever,

, 20. In a printing press, the combination of a suitable frame, an impression cylinder, suitable supports for said impression cylinder, eccentric bearings-for said cylinder supports, a rod or bar connecting said eccentric bearings, a hook member engaging said rod or bar for retaining said eccentric bearings in normal position, and sheet controlled means for disengaging saidretaining hook and shifting said eccentric bearings to shift said cylinder supports.

21. In a printing press, the combination of a suitable frame, an impression cylinder, suitable supports for said impression cylinder, connected eccentric bearings for said cylinder supports, a spring retained hook 'memberholding said connected hearings in normai position, a pitman member formed with a hook adapted to move into engage- 1r entwith said connected bearings, a controlling lever adapted to more said pit-man member into engaged position ciprocating said pitman member, and automatically controlling means for operating said controlling lever.

22. In a printing press, the combination of a, suitable frame, an impression cylinder, connected adjustable eccentric bearings sup porting said cylinder, means retaining said bearings in normal position, a reciprocating pitman adapted to disengage said retaining means and shift said connected bearings, means for reci rocating said pitman, a controlling lever or said pitman, an actuating cam for said controlling lever, lever, means controlled by said tr1 ping lever for efiectin the engagement 0 said controlling lever y its actuating cam, and sheet detecting means-controlling said tripping lever.

23. In a printing press, the combination of a suitable frame, an'impression cylinder, suitable supports for said cylinder, adjustable eccentric bearings for said cylinder supports, bearings, a or bar for holding said connects hearings in normal position, a reciprocating pitman formed at its lower end with a hook which is adapted to engage said rod or bar, means normally holding said pitman in disen ged position, means for reciprocating sai pitman, a controlling lever adapted to move said pitman into engagement with said rod or bar, an actuat ng cam for said, controlling lever, 'a pin or bolt movably mounted upon said controlling lever a latch normally retaining said pin or bolt out of the path of said actuating cam, a tripping lever adapted to actuate said latch, and sheet detecti ng means for controlling said tripping lever. t

lever adapted to 24:. In a printing press, the combination of a suitable frame having a form supporting bed, a traveling impression cylinder, rock arms or levers in which said cylinder is mounted, a yoke-shaped frame, bearings for said arms or levers suspended from said yoke-shaped frame, adjust ble eccentric bearings for said yoke-shape frame, a rod or bar connecting said eccentric bearings, a spring retained hook engaging said rod or bar for holding said connected hearings in normal position, a reciprocating transversely movable pitman formed at its lower end with a hook which is adapted to engage said rod or bar, a spring normally holding said pitman in disengaged position, a cam for reciprocating said pitman, a controlling id a tuating means for rea ippi a rod or bar connecting said eccentric hook member engagm said rod.

engage said pitman to move l it into engagement with said rod or bar, an

said pin or bolt out of the path oi for camn a tripping lever adapted 1 into action, an

to actuate said latch, and sheet'detecting means for controlling said tripping lever.

25. In a printing press, the combination of a suitable frame having a form supporting bed, a traveling impression cylinder, suitable supports for said impression cylinder, connected eccentric bearings for said cylinder supports, means holding said connected bearings in normal position, a pitman adapted to move into engagement-with said connected bearings, a controlling lever adapted to move said pitman into en aged position, means for reci rocating sai pitman in the direction 0 tuating cam for 'said controlling lever, a sliding pin or bolt mounted upon said controlling lever, a spring tending to move said pin or bolt outwardly into the path of said actuating cam, a lug upon said pin or bolt, a retaining latch upon said controlling lever normally engaging said'lug to hold said pin or bolt out o the path of said cam, a pivotally mounted tripping lever supported adjacent,

to said latch, a cam controlling said tripping lever adapted to periodically lower it toward said latch, and automatic sheet detect-' ing means controlling said tripping lever.

26. In a printing press, the combination of a suitable frame having a form su porting bed, a traveling impression cy inder, rock arms or levers in which said cylinder is mounted, adjustable eccentric bearings for said .rock arms or levers, a rod or bar connecting said eccentric bearings, a hook engaging said rod or bar for holding said connected bearings in normal position, a reciprocating pitman adapted to engage said rod or bar, means normally holding said pitman in disengaged position, a cam or reciprocating said pitman, a controlling lever adapted to engage said pitman and to move it into engagement with said rod or bar, an actuating-cam for said controlling lever, a pin or bolt movably mounted upon said controlling lever, a spring tending to move said pin or bolt outwardly into the path of said actuating cam, a lug upon a retaining latch upon said controlling lever normally engaging said lugto hold said pin or bolt out of the path of said cam, a pivotally mounted tripping lever supported adjacent to said latch, a cam controlling said tripping lever adapted to periodicall lower it toward said latch, and automatic s eet detecting means controlling said t-rippinglever when it is lowered by its cam. 27. In a printing press, the combination of a suitable frame, an impression cylinder, suitable supports for said impression cylin der, connected eccentric bearings for said cylinder supports, normally inactive means for shifting said eccentric bearings to raise said cylinder supports, a controlling lever throwing said bearing shifting means actuating cam for said consaid pin or bolt, 7

mounted adjacent to said latch, a cam controlling said tripping lever, a rock shaft.

it link connecting said tripping lever with said rock shaft, a rock arm upon said rock shaft, a perforated sheet supporting plate,

size

and a sheet detecting pin or rod pivot-ally 1' mounted upon said rock arm and supported thereby in alinement with the perforation in said sheet supporting plate, for the purpose set forth.

MATTHEW VIERENGEL. Witnesses WM. E. KNIGHT, M. G. CRAWFORD.