US1108193A - Sheet-gripping device for printing-presses. - Google Patents

Description

H. LANG. SHEET GBIPPING 1mm 1-03 PRINTING PBESSES.

APPLICATION FILED MAY 31,1913.

Patented Aug. 25, 191% 2 SHEETS-SHEET 1.

H. LANG. SHEET SHIPPING DEVICE FOR PRINTING PRESSES.

APPLICATION FILED MAYSI, 1913.

Patented Aug. 25, 1914.

2 SHEETS-SHEET 2.

"-- it is one of the ob ects of my invention to 2;}. The means by which spasm use, cnicaeesiuimois,'assrenoia are THE Goss amma mess commas, or'cnxcaec,

ILLINOIS, econometrics or rumors.

sneer-sme led" DEVICE ron rmnrmerasssss.

p p s tt l a ca Patented Aug. 25, 1914.

Application tiled May 31, 1813. semi No. 770,965.

To all whom it may concern:

Be it known that 1, Hnnsa'r' Lane, a

citizen of-the United.*States, residin at Chica o, in the county of Coolr,.1n the btate of Illinois, have invented certain new-and useful Improvements in Sheet-Gri ping.

Devices for -Printin -Prcsses, of whici the following is a speci cation, reference being had to the accompanying drawings.

This invention relates to sheet gripping for printing presses. Heretofore in some constructions the "rip )ing devices, which carry a sheet or a )lmc ll of sheets around on thc su rfaceof'a cylinderv by, ressing theirlead ed es against the cy inder, have been closed y means of a lever provided with a stud or roller working on a suitable cam, such closing being accomplished against the action of a sprm which'automatically ens the gri )pcr w en thev roller passes o of the higli portion of the cam. In this-construction no adequate provision has been made or varyingthe throw of the gripping devices in closing to suit ditierent t nckncsses of paper, diilercnt numbers of sheets to be gripped or other varying conditions. Moreover, inasmuch as the closing of the gripper effected by the cam has been against the action of the spring by which the gripper is adapted to be closed, there has been a very considerable wear upon the cam and upon the roller.

provide a construction in which the gripper is closed through the medium of a iositive movement of the operative mem er, in which the extent of the throw of the gripper may be varied.

it is another object to provide in a consll'tutiun of this sort means for mounting the gripper device yieldingly relative to the positively actuated member by which it is closed.

It is another object to provide a construction com risin a cam for closin the gri per in w iich t. ie closing action mil not be against the action of a spring by which the gripper is adapted to he opened by which improved construction the wear upon the ram shall be matcriallv decreased.

it is another object o my invention to imn'ove devices of this sort in sundry details iereinaftcr pointed out.

, oLThat: which I I have, accomplished these'objectsJ-are illustrated insthe accompanying drawings and are hereinafter specificallyidescribed.

believe to be new is set f0rtlrin:tlie claims.

Inthe drawings,-Figure 1 is an end view of a. cylinder provided with my im provements, the main portion of the operatmg cam beinglr shown only diagrammatically in order to is able to show the parts beyond in full lines Fig. 2 is a view of the cylinder, shown in Fig. 1 as seen from the left in Fig. 1; Fig. 3 is aview similar to Fig. 1 illustrating a ditierent phase of the operation of the cylinder; andFig. 4 is an enlarged detail showing the manner in which the {grippers are mounted upon the gripper sha t. 1

Referring to .the several figures of the drawings in which corresponding parts are indicated by the same reference characters- 'indicates a cylinder, which may be either the rotary carrier of a rotary folding machine or may be a collecting cylinder of any well-known type, or may be a gripper cylinder of any well-known form. 11 indicates the shaft upon which said cylinder is mounted, said shaft being supported in any suitable framework not shown. 12 indicates a gripper shaft revoluhly mounted in said cylinder near its outer periphery. said shaft. 12 having fixed upon it at suitable intervals thcrcnlonrz a plurality of grippers 13 mounted upon said shaft in suitable reeesses M in the surface of the cylinder. As best shown in Fig. 4 the grippers 13 are secured by means of suitable screws upon split collars 15 which are clamped by .means of screws 16 upon the shaft 12. As

also shown in said Fig. 4 the outer ends of the grippers 13 are adapted .to be brought down squarely upon the edge of the sheet of paperer of a bunch of sheets of paper lying upon the surface of the cylinder 10, such sheet or sheets being indicated in Figs. 1 and 4 by the numeral 17.

Coming now to the means for rocking the gripper shaft 12, 18 indicates a lever secured by means of a key 19 upon the outer end of the shaft. 12.

'20 indicates a rod pivotally secured by means of a screw 21 to the end of the lever 18.

22 indicates a lever pivotally mounted mpon a stub-shaft 23 carried by the cylinder.

2i indicates a swivel-eye mounted on one end of the lever 22, through which the rod passes, a spring being mounted on sui'l rod between the swivel-eye 2-1 and a 5 collar :26 which is secured by means of a setserew 2T adustably upon said rod. 98 indicates nuts scrmv-thremlcd 11 ion the end of the. rod 20 beyond the swivel-eye 24. 29 indicates a rod pivotally mounted to the oppositcend of the lever 22.

indicates a link one end of Which is rovolubly mounted upon the shaft 12 and the other end of which is pivotally c'ounet-ted lo the free end of the rod 29 by means of a bolt 31. .llountcd upon the free end of the link or lever 30 is a stud 32, in the construction shown being in the form of a roller revoluble upon the bolt 31.

38 indicates a cam member (shown largely diagrammatically in thefigure) provided with a bracket 34 by which it is mounted upon the framework of the machine in any suit-able manner (not shown) the bracket 34: being-'- provided with an arc-shaped slot by which connection is to be made with the framework whereby the cam member can be given a partial rotation relative to the frame. [is best shown in Figs. 1 and 3, the cam member 33 is provided with a cam so ,lil'nmh an in which said roller 32 operates, the greater portion of said cam groove being, concentric about the axis of rotation of the cylinder, but. a portion thereof being a moderate, easy digression from circular form.

it. will be readily understood that with the cylinder in rotating in clockwise direction in the figures, for the greater part of the rotation the roller 32 will operate in the circular part of the cam groove 36, whereby it) the lever .22 is held in the position shown in Fizz. 1. serving through the medium of the spring: 25 to hold the lever 13 in the posilion there. shown with the gripper l3 pressed yieldingly against the sheet or bundle of sheets 17 upon the cylinder. It will be understood that the pressure of the sprin 25 upon the gripper 123 can be regulated by the adjustment. of the collar 26 through the medium of the set-screw 27. When. however. the roller 32 is brought. into engagement with the rise of the cam eroove so the lever 22 is turned in a clockwise direction in Figs. 1 and ii. The first result of u turning of the lever 22 in a clockwise direction is the expansion of the spring 25 until the swivel-eye 211- is brought into contact with the nuts 28. whereupon by afurther movement of the lever 22 in clockwise direction the lever 18 is also given a rotation in the same direction releasing the grippers 13 from the paper 17 and opening the grippers finally to such a position as that shown in Fig. 3. Upon the still further rotation of the cylinder. the roller 32 is, of course area-gar back to the concentric portion 0% the groove 3b turning the lever 29 in counterclockwise direction. The lever 18 is moved by this'action in the same'direction through 't e sprin 25 until just at the end of the movement of the lever 22 the grippers 13 are brought into engagement with the paper 1? on the cylinder, whereupon the final movement of the lever 212 is against the action of the spring 25.

What I claim as my invention and desire 7 to secure by Letters- Patent is,

1. The combination of a cylinder, a gripper-shaft revolubly mounted thereon, a plurality of grippers fixed on said shaft, and positively-actuated means connected to said shaft for rotating it for opening and closing said grippers, the connections between said positive y-actuated means and said shaft comprisingyielding means adapted to be moved bodily by the operative movement of the actuating means, said yielding means being adapted to be stressed only at approximate y the end of the operative closing stroke of said actuating means.

2. The combination of a cylinder, a gripper-shaft revolublymounted thereon, a pinrality of grippers fixed on said shaft, a cam member prm'idcdwith a cam groove. a stud adapted to be actuated positively by move ment along said cam groove. and connections between said stud and said shaft whereby the movement of said'st-ud alon said cam groove serves to rock said shaft or opening and closing said grippers. said connectilm comprising: vieldinp means adapted to he moved bodilv by the operative movement oi said stud. said yielding means being adapted to be stressed so as to exert a yielding pressure upon said cam only at approximately the limit of the operative closing stroke of said stud.

3. The combination of a cylinder. a gripper shaft revolubly mounted thereon. a plurality of grippers fixed on said shaft. a lever connected with said gripper shaft: l'or rocking it for opening and closing said grippcrs. and a cam-member provided with a cam-groove For operating said lever positively for both opening and Closing said grippers. the connections between said .eripper shaft and said lever comprising yielding: means adapted to he moved bodily bv the operative movement. of said lever and adapted to cause said erippers to close upon the complete closing movement of said lever. the compression of said yielding means caused by the closing movement of the. lever being controlled by the thickness of the matter gripped.

4. The combination of a cylinder. a gripper shaft. revolubly mounted thereon. a plurality of grippers fixed on said shaft. a lever connected with said gripper shaft. for rocking it for opening and closing" said grippers, and a cam-member provided with a cam-groove for operating said lever posiofsaid first-named lever being controlled tively for both opening and closing said by the thickness of the matter gripped. grippers, the connections between said grip: 8. The combination of a cylinder, a gripper shaft. and said lever comprising a secper shaft revolubly mounted thereon, a pinond lever fixed on said shaft and a spring rality of. rip was fixed on said shaft, a lever interposed between said two levers adapted couuecte Wllill said gripper shaft for rockto cause said grippers to close upon the coming, it for openim and closing said grippers, plctc closing movement of said first-named and a cam-mom er provided with a camlever. "move for operatingsaid lever positively The combination of a cylinder, a grip- 'or both opening and closing said grip was, per shaft revolubly mounted thereon, a pluthe connections between said gripper s haft rality of grippers fixed on said shaft, a and said lever cmnprising a second lever lever connected with said gripper shaft for fixed on said shaft, a rod pivotally mounted rocking it for opening and closing said gripon said second lever and passing through 15 pers, and a cam-member provided with a an eye on said first-na1ned lever, means tam-groove for operating said lever posicarried by said rod adapted to limit the lively for both opening and closing said extent to which said rod may withdraw grippers, the connections between said gripfrom said eye, and a compression spring per shaft and said lever comprisin a secmounted on said rod adapted to cause said z p-Ind lever fixed on said shaft, a rod pivotally grippers to close the complete closing move- Iniounted on said second lever and passing ment of the first-named lever, the means by through an eye on said first-named lever, which the withdrawal of the rod from the and a compression spring mounted on said eye of the second lever is controlled being rod adapted to cause said grippers to close so positioned that the complete closing move- 5 upon the complete closing movement of said meat of the first-named lever does not serve first-named lever. to compress said spring except to the extent The combination of a cylinder. a gripthat the grippers are held from complete per shaft revoluhly mounted thereon, a plnclosing by the matter gripped. rality of grippers fixed on said shaft, a t). The combination of a cylinder, a grip- 30 ilcver connected with said gripper shaft for per shaft revolubly mounted thereon, a plurocking it for opening and closing said griprality of grippers fixed on said shaft, a lever pers, and a cam-member provided with a connected with said gripper shaft for rockcam-groove for operating said lever posiing it for opening and clcsing said grippers, lively for both opening and closing said and a ram-member provided with a cam- :15 grippers. the connections between said gripgroove for operating said lever positively m0 per shaft and said lever comprising a secfor both opening and closing said grippers, cud lever fixed on said shaft. a rod pivotally the connections between said gripper shaft mounted on said second lever and passing and said lever comprising a second lever through an eye on said first-named lever, fixed on said shaft, a rod pivotally mounted in means carried by said rod adapted to limit on said second lever and passing through an (no imp to which said rod may withdraw an eye on said first-named lever, means ourgu from said eye. and a compression spring ricd by said rod adapted to limit the ex- I u ounfed on said rod adapted to cause said tent to which said rod may withdraw from grippers to close upon the complete cl sing said eye, a compression spring mounted on m vement of said first-named lever. said rod adapted to cause said grippers to H l T. The combination of a cylinder. a gripclose upon the complete closing movement per shaft revoluhly mounted thereon. a pluof said first-named lover, a collar on said rrdity of grippers fixed on said shaft. a lever rod against which one end of said spring connectwl with said gripper shaft for I'ml bears, and means for holding said collar on ing it for opening and closing said grippers. adjustably in position on said rod whereby and a cam-mcrnher provided with a camthe pressure of said spring against said firstgroovo for operating said lever positively for named lever may be varied. both opening and closing said grippers, the l The combination of a cylinder, a gripconnections between said gripper shaft and per shaft. rcvoluhly mcuutcd thereon, a plu- 55 said lever comprising a second lever fixed rality ot' grippers fixed on said shaft adapton said shaft, a rod pivotally mounted on ed to close against the surface of said CYllllsaid second lever and passing th ough an der. an arm rcvolnbly mounted on said sllnft, eve on said first-named lever. means carried a link pivotally connected to said arm. a by said rod adapted to limit the extent to lever pivotally mounted on said cylinder and 60 which said rod may withdraw from said pivotally connected at one end with said eye. and a. compression spring mounted on link. connections between said lever and said rod adapted to cause said grippers to said gripper shaft for rocking the shaft elosc upon the complete closing movement of for opening and closing said grippers, a fe id first-named lever. the compression of roller carried by said link and said arm,

said spring caused by the closing movement and a cam-member provided with a mum 1,108,198 Li! bvi l of said lpvm', the (.(JIIIPI'CHSiUH of said spring ca'us'edby'the cl'osmg'nmvement of the Lever being"c0ntrd1led bythe'thickncss of 'tho nmttel-gripped.

- 1111131 1111 LANG.

Witnesses:

JOSEPH J. WALSER, GORDON C. Anno'r'r.

Cam-as m? his patent may be abtainmi is)! five cams man, by addressing the Commirssioner of Ev-tents,

" 'Wanbtagtaa,$3. Q."

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