US988559A - Plate-clamping mechanism for printing-presses. - Google Patents

Description

W. EVEN SEN. PLATE GLAMPING MECHANISM FOR PRINTING PRESSES,

APPLICATION IILED MAY 9, 1910.

Patented Apr. 4,1911.

2 SHEETS-SHEET 1' w. EVENSBN, PLATE GLAMPING MECHANISM FOR PRINTING PBESSES.

, APPLICATION II LED MAY 9, 1910.

Patented Apr. 4, 1911.

2 SHEETS-rBHEET 2- seams; or cnx 'caso,

reenter-teams. fcnains ramming qpmlrani, 0F onioaedamimb'rs, aoonronnrron or rnmnors',f

\ rnarn-cminrme Milo To all whom it mc'yconcern:

- Be'itknown that I, WILLIAM EvENsEN, a

citizen of the UnitedStates, residing atChi- 'cago, =in the county of. Cook and State of Ill1nois,:have invented certain new and use ful Improvements in Plate-Clamping Mechanismfor Printing Presses, of which the following/is e. specification, reference being .had to thei 'ac companying drawings.

My invention relatesto-l plate-clamping I mechanism for printingpresses and particularly' to that. .typeof "plate-clamping mech- .anisrn-in which -'the plate-clamps are capa I blegof'separat'e' adjustment, in order to permitth'e employment of plates of different widths, and are connected with a movable member in such a way that by the movement of the movable member they are simulv I More particularlylstill, my invention re.- "lates to improvements in plate-clamping mechanism of the-kindshown-and described in Letters'Patent to me, No. 905,162, of De- .cemberl, 1908. g 'Theobject ofmy invention is to provide newand im roved locking mechanlsm by whichthe plate-clam ing mechanism may automaticall locke in its'plate-clampin position, and a so in its 'open position, an

which isadapted to beunlocked only by the insertionef the toolby which the movable member is moved toclamp the plate-clamps against. the plateor move them awaythere from.- i I As a further improvement, my invention looks'to the. providing of such automaticlocking mechanism ofsuch a character as to permit the insertion or removal of the tool only when said plate-clamps are in their nn-pletely locked or-in their fully unlocked 'cn." By'the provision ofv such mechm' I am enabled to construct plate-clamping mechanismwhich is always sure to be firmly locked against the plates before the -press be started and thereby prevent accidents arising from the plates not being -,.completely and firmly locked, and also ren- '1 dering the lockingand IIIIlOClIIIIg certain,- efiicient and secure. 1

the accompan in .drawings :--F1gu're 1 represents a -portionj'of one end of a plate cylindeif with g =my jimproved .mechamsn'r attached"; -='FigFQWis-an end View of a part taneously clamped upon' the edge of the,

.mounted in any well known approved manno part of my present. invention. "by which-theclamping movement is effected,

- screws the plate-clamps may be readily and provided at its lower end with an eccentric made of the .same width as the block 15,1

t swams a; 1

Application filed may 9, 1910. Serial No. 560,246.

of .a.. :plat e-cylinder showing the operating tool in position; Fig. 3'is an enlarged detail, being a vertical section through line 3-3 of Fig.1; Fig. 4' is an enlarged detail, being a a section on of Fig. 3; andFig. 5 is an enlarged detail, being a view of the sliding bearing block in which the lower end of the eccentric-cylinder is mounted.

With the exception of the locking devices hereinafter. described the plate-clamping mechanism is the same as that shown and described in the Letters Patent to me, above I 9 ner, preferably in the manner shown and described in my above named Letters Patent,

screw-threaded openings through which the screws 9 pass, whereby, by the. turning of the screws 9 in one direction or the other, the clamps .10 may be independentlyadjusted on the cylinder. All theseparts are well known and are fully shown and described in my said Letters Patent and form It isenough to say that by the. rotating of the independently-adjusted on the cylinder,in

order .to provide. for different widths of plate, in the well known manner. 12 indicates a cylindrical block which is.

mounted so as to turn in a corresponding.

opening in the movable member 7, andis located centrally of the circumferential length thereof. The cylindrical block 12 is trunnion 13 which is rotatably mounted in a suitable. openin 14 in a block 15. The

block 15 is locate in a suitable recess 16 in the body of the cylinder. The recess 16 is:-

" 9 in which the cylindrical block 12rmoves,

like the corresponding parts shown and described in my said Letters Patent, their operation is briefly described as follows :By means of the operating tool 17 the cylindrical block 12 may be turned in its bearing, and this turnin in one direction or'the other slides the blocl 15 in one direction or the other in the recess, and by the operation of the eccentric trunnion operates to move the movable members longitudinally of the cylinder so as to simultaneously move the plateclamps against the edge of the plate and lock the same firml on the cylinder, or, moving in the opposlte direction, to unlock the clamps from the plate.

The automatic locking devices to which my invention. specifically relates are as follows :l Tear the bottom of the opening 17 the cylindrical block 12 is provided with-an openin 18 from the periphery of the cylindrical lock to the square opening or socket 17 1 9 indicates a pin which is slidingly mountedin the opening 17 and is provided at its inner end 'with a rounded head 20. This in is of a length just sufiicient to extend rom-the outer surface of the cylindri-'- cal block 12. to the surface of the socket 17. 21 indicates a pin which is seated in a tubular support 22 so as to slide longitudinally ofitself therein. The tubular support 22 is secured in the movable member 7 opposite the inner side of the socket 17 and so as to register with the opening 18. The innerend of the tubular support 22 extends into a suitable opening '23, in the type cylinder 6, so as-to slide back and forth therein longitil'dinally of the cylinder when the mov-- able members 27 are moved to and fro. The pin 21 is provided with a stem 24 so as to form a peripheral shoulder 25 on pin 21. -26 indicates a spiral spring which is seated around the stem 24 in the tubular support 23, bearing at its inner end against the bottoni of thetubular support and at its other end against the shoulder25. The spring operates to normally force the pin 21 outward when free to move. 27-28 indicate depressions in the sides of the cylindrical opening above opening 18' and above the pin 21. 29 indicates a pin having a rounded head 30 which is shdingly mounted in a suitable opening in the cylindrical block 12, near the top thereof, in register with de ressions 27-28, and so as to have a limited motion longitudinally of itself. 31 indicates a depression or notch on. the periphery of the cylindrical block 12 at such a point as to be brought into register withthe pin 21 when the'cylindrical block is turned, and into which,when it is so brought into register with the pin, the pin 21 is projected by the spring 26 as is shown in dotted lines in Fig. 1.- This depression or notch 21, as is best shown in Fig. 4, is preferably formed by cutting into the block 12 from its periphcry in the direction of a chord to the are ending at its bottom in a shoulder, against which the pin 21, when projected into the same, abuts. When the pin 'is thus projected into the depression 31 it is obvious that the rotation of the cylindrical block in one direction is prevented by the slide block 15 being in contact with one end "of the recess 16, and rotation in the other direction is prevented by the pin-21. The shank of the op erating tool, squared to fit the squa're'socket 17 is provided upon each of its sides with a depression 32, which, when the tool is placed in position, is adapted to register with the rounded head 30 of the pin 29. hen the block 12 is so rotated that "the pin- 29 comes into register with either of the openings 27-28, the shank of the tool can of the tool being'beveled o; sg as to push thepin 29 back 1nto one or the gtheriof the openings 27-28 as the shank arias-.1001 is inserted. As soon as the tool is inserted to its full depth the depressions 32 are brought into register with the rounded end of the pin 29 which is thus free to move back so 5 be insertedinto the socket 17 the lower end that its outer end may be flush with the I periphery of the cylindrical block. The openings 2728 are rounded and the end of the pin 29 is curved to correspond with the eriphery of the cylindrical block 12 so that when the cylindrical block 12 is turned the pin 29 will be pushed back by the engagement ofics rounder head with the opening. The depressions 32 are of sufiicient' depth to permit the outer end of the pin 29, when pushed back, to be flush with the surface of block 12 and permitits rotation. The depressions 32 are ronnded -to conform to the rounded head 30 of pin 29 so that the pulling out of the tool will push back the pin 29.

In Fig. 1 the parts arewshown in such a position that the movable member 7 is at the-- inward limit of its motion on cylinder 6 which brings'the'clamps 10 into locking position against the plate. When in this position the sliding pin'l9 is in register with spring seated-pin 21, and, the operating tool being out, thepin 19 is free to move nward permitting the pin 21 to be pushed outward by the spring into the depression 31 looking e-the parts firmly in position. against rot n- Thei'pullin itrot the handle-has also projectedth'epi '29 fintodepression 27. -I tbeing desired to unloekthe clamps from the plate, the shank ofwthe toolis inserted into:

rection causing the movable member 7 to be moved outward on the cylinder, carrying with' it, simultaneously, clamps 10' away from the edge of the plate and unlocking the same. It will be obvious that as soon as the pin 29 has passed the opening 27 it is prevented from being projected outward and consequently the operating tool cannot be removed until the rotation has'continu-ed far enough to bring the pin 29 into opposite depression 28.'- This opening 28 is so placed that the registrationof the pin 29 therewith 30 occurs when the movable member '7 has reached the extreme outward limit of its motion and theeblock 15 is brought into contaQt, With! the opposite end of the recess 16. In thisjposition the pin 29 is free to. move outwardlyiinto recess 28 and the tool may be removed. LlVhenthe parts are in this last described unlocked position it is obvious that the tool can be inserted, the pin 29 being free to-be pushedback into'depression 28. It being desi-redto lock the plate the tool is thereupon rotated ina clockwise direction, the rotation forcing the pin 29 back into the, depression on the tool shank. As soon asthepin, moving in this direction, passes out of register with the depression 28 it is obvious that the tool cannot be removed until the. pin 29 is again brought into register with opening 27. This rotation moves the movable membe 7 and the plate-clamps scribed, at which position only can the tool be removed. The removal of the tool leaves the pin 19 again free to move, permitting 5 pression 31,- locking the cylindrical block 12 against backward rotation and thus lOCKHlg the plate-clamps in their locked position upon the plates.

That which I claim as my invention, and desire to secure by Letters Patent, is

1. In combination, a plate-support, a movable member adapted to receive an-operating tool, plate-clamps connected with said movable member and adapted by its movement to be simultaneously moved into and 5 the socket 172:1 Thispushes back-the pin 19 which pushes back pin 21 against spring .26

ment to be simultaneously moved into and cylindrical block 12 in a contra-clockwise di-- inward into the locking position, above de spring 26 to thrust forward pin 21, into de- I out of lockedpositioncon a plate, and lock ing devicesnadapted to automatically lock said movable member inplate-locking posi-. tion and to be. disengaged therefrom only by the insertion of the operating tool.

2. 'Incoinbination, aplate-support, a movable member, adapted to receive an operating tool, plate-clamps connected with said movable member and adapted byits move-- out of locked position on a' plate, and locking devices adapted to automatically lock said movable member in plate-locking posi '--v i tion and to be disengaged therefrom onlyby the insertion of the operating tool, said locking devices being adapted to permit the insertion of the operating tool when said mov-r' able member isin plate-locking or unlocked 3. In combination, a platesupport, a movable member adapted to receive an operating tool, plate-clamps connected withsaid move able member and adapted by its movement to be simultaneously movedinto and out of locked position on a plate, and locking devices adapted to automatically lock said movable member in plate-locking position, and to bedisengaged therefrom only by, the insertionof the operating tool, said locking devices being also adapted to permit the in-v sertion or removal of the operating tool only when said movable member is in plate-locking .or unlocked position. 4. In combinat on, a plate-cylinder, plateclamps slidingly mounted thereon, a movvable member movable longitudinally of the cylinder and adapted by its inward movement to simultaneously lock the clamps upon a plate, a moving device connected withsaid movable member and said cylinder: and 1 adapted to receive an operating toolgandybyq. its turning, to move said movable member longitudinally of the cylinder, and locking mechanism carried by said cylinder and said, movable member and adapted to automati-' cally lock said movable member. against movement in its plate-lockingposition an to be unlocked therefrom onlyfby' the inser tion of the operating tool.- i 5'. In combination, a plate-cylinder, gp clamps slidingly mounted tliereon,"a" no, able member movable longitudinally 'of the. cylindenand adapted by its inward movement to simultaneously lock the clamps upon a plate, a moving device connected with said- 5 clamps'slidingly mounted thereon, a movable member movable longitudinally of the cylinder and adapted by its inward movement to simultaneously lock the clamps upon a plate, an eccentric connected with said movable member and with said cylinder, adapted to receive an operating tool and by its turning to move said movable member longitudinally of the cylinder, and locking mechanism adapted to automatically a lock said movable member in its inner and outer positions andto be disengaged in both of said positions only by the insertion oi an operating tool, said-locking mechanism being further adapted to 'permit the withdrawal of said operating tool only when said mov-' able member is in its inner or outer position. I

7 In combination, a plate-cylinder, plate-v clamps mounted and independently adjustable thereon, a movable member, movable longitudinally of said cylinder and adapted by its movement to simultaneously move said clamps into plate-locking or unlocked position, a rotatable member rotatably mounted in said movable member. and

adapted to receive an operating tool'wl1ere-.

by said rotatable member may be turned to move said movable member longitudinally of the cylinder, a spring seated pin carried by said cylinder and adapted to en ga e said rotatable member when said move abl'h member is in plateloeking-position and automatically lock same in said position, and means carried ,by said rotatable member and adapted by the insertion of the operating tool to disengage said spring seated pin,

from said rotatable member. I

8. In combination, a plate-cylinden plateclamps mounted and independently adjustable thereon, a movable member movable lock the same in said'posit-ion, means carried by said rotatable member and adapted by the insertion of the operating tool to dlsengage said spring-seated pin from said rotarotatable' member rotatably table member, and a second pin carried by said rotatable member and adapted to engage the operating tool and permit its insertion or removal only when said rotatable. member is turned to bring said movable inder, independentlyadjustable plate clamps slidingly mounted on said cylinder and adapted by the movement of said member on saidcylinder to be simultaneously moved into and out of plate-locking position, an

eccentric connected with'said cylinder and with said movable member and adapted.-

when turned to move said movable member longitudinally of said cylinder and having an opening adapted to receive an operating tool, and locking devices adapted to automatically lock said movable member in plate-locking position and alsoadapted to prevent the insertion or withdrawal ofsaid" operating tool except when said movable member is incomplete platelocking position or in un-locke'd position.

10. In combination, a plate cylinder, :3.

I member movable longitudinally of said cylinder, independently-adjustable plate clamps slidingly mounted on said cylinder and adapted by the movement of said member on said cylinderto be simultaneously moved into and out of plate-locking position, an eccentric connected with said cylinder and with said movable member and adapted when turnedto move said movable member longitudinally of said cylinder and having an opening adapted to receive an operating tool, a spring-seated pin carried by said cylinder and adapted to automatically lock said eccentric against rotation when said plate locking member is in plate-locking posltion, locking devices carried by said eccentric and adapted to prevent the insertion of said looking tool into saidopening except when said movable member is in complete plate-locking position or in unlocked position, and a movable pin carried by said eccentric and adapted to register with saidspring-seated pin when the movable. member is in'plate locking position and by the insertion of the operating tool to force said spring-seated" pin out of locking engagement.

, WILLIAM EVEN SEN. WVitnesses MINNIE A. HUNTER, IVILLIAM H. DEBUSK.

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