US1052206A

US1052206A - Plate-clamping device for rotary cylinder printing-presses.

Info

Publication number: US1052206A
Application number: US500596A
Authority: US
Inventors: Henry F Bechman
Original assignee: DUPLEX PRINTING PRESS CO
Current assignee: DUPLEX PRINTING PRESS Co
Priority date: 1909-03-15
Filing date: 1909-06-07
Publication date: 1913-02-04
Anticipated expiration: 1930-02-04

Description

- H.A P. BECHMAN.

PLATE CLMPING DLYTGE FOR ROTARY CYLINDER PRINTING PRESSES. 4APPlJlng'lN FILED JUNE 7, 1909.

.1,052,205 w wantedl Feb. 4,1913.

" cylinders erv 'HENRY PRESS COMANY, F BATTLE CREEK,

.'ELATE-CLAIIIPING DEVICE FOR F. BECKMAN, OF BATTLE CREEK, MICHIGAN, ASSIGNOR 'ro DUPLEX-Plummer IdI(Jflil'.tit-.ANP` A CORPORATION 0F MICHIGAN.

RQTARY CYLINDER PRINTING-PRESSES.

iftl

Original application led Harsh 15,

Speocetion of Letters Yatent.

Patentedleb. 4, 1913.

1909,'Se1ial No, 483,600'. Divided and this application led June 7,

1909. Serial No. 500,596.

To all fathom i may conce/m Be it known' that l, HENRY F. BECKMAN.; ot' Battle Creek, in the county 'of Calhoun :ind State of'lviichigdn, haveinvented cer tain new and usetulimprovements in late- Cl ainpin g Devices tor Rotary Cylinder Printing-Presses g and l hereby declare that the following a full, clear, and exact description ther-coi", reference being had to the accompanying drawings? which torni part of this specitication.

"this invention relates to rotary-cylinder web-printing presses wherein the printing surfaces are formed on stereotype plates `iL-a; sie`11cd upon the peripheries ot the plate and co-acting` with adjacent imfion cylinders to print a web.

The primary object ot the present invention is to provide means for quickly and easily fastening tubular plates onthe cylinders of the preesv described .inv my 'Patent Number SGTfZBG, dated @ctober 'L 1907; and Number 979,919 dated December 27, 1910 of which latter the present case is s division. Vln said press the plate cylinders are of small diameter, and are designed tor use with vtuhulir stereotype plates adapted to he slipped end'wise on and o the plate cylinders.

T he present invention consists in 'the novel means for securing stereotype plates on the cylinders :is hereinafter described and claimed; and in the accompanying drawings l have shown the invention as applied to a plate cylinder adapted to Gerry two tubular single page vplates arranged end to end thereon; hut the novel clamps can he iMilled to cylinderscarrying three or more tubular page-plates; and to ordinary pluie cylinders.

l will new describe the invention in detail, illustrated in the accompanying drawing... and in the claims summarize the parts und combinations of parts for which protection 1s desired.

ln said drawings-Figure I1 is au en` 'lai-ged sectional elevation of a plate cylinder oi' a rotary press' equipped with my plate-lastenings clamping a plate. Fig.

a the plate-'tastenings in disengaged ition. 3 is nn enlarged top plan view et" the end plete securing devices. Fig. 'i a section on line el--n Fig. 3, showend clamp in position te enter the miler view ot' such plate cylinder ilanges are adapted to slots-nd clampv a plate. Fig. 5 is a similar section on k lineI #lr-5, Fig. 3, showing the clamp in position to permit the removal of a plate. Fig'. v6 .is an enlarged detail section v on line 6 6, Fig. l. f

Ac strikin feature of the press shown ,in my cltoresai patent diminutive size of the plate cylinders; in practice the circumference of each plate cylinder when the.l late is on is merely equal to the length o one ordinary newspaper page-plus the desired margins between successive impressions,-whereas inA ordinary presses the circumference of the cylinders 1s at least twice as great. TWith such small cylinders l use tubular stereotype plates each of which practically surrounds the' circumference of the cylinder. Each plate is .bored to fit closely and neatly around the periphery of the cylinder but has a longitudinal slot to engage the edges of a rib le on the cylinder, which rib keeps the plates in proper alinement on the cylinderrfand also forms an abutment by which the plates are caused to turn therewith.

Such plates can be pla-ced on or removed rom'the cylinders only by slipping them endwise on or oit the cylinders. The only fastening devices required therefore are means for preventing lateral movement ot the plates on ther cylinders during the .operation of thepress vwhich means forms the subject ot the present case.

ln order to facilitate securing the plates on the plate cylinders or removing therefrom I have provided the plate cylinders with nevel plate securing devices which disappear when disengaged from the plates, and to come into locking position when the plates are placed on the cylinder'. I will now describe these devices.

The plate cylinders are shownA as lout two pages wide, so that both plates can be conveniently .slipped on or 0H the saine end of tliecylinder. Eacli plate vided with one or more slots 1d in which is placed an ordinary 'plate clamp or slide block 2 which is provided with lateral 2a engaging grooves in the sides of the slot la, us usual., The inner end 1b of this slot is deepened and' inclined and the side `grooves are similarly inclined inwardly toward the axis of the cylinder so thatwhen the clamp 2 is moved longitudinally of the slot and application is the Jfor these plates y them and toward the inner end of the slot it gradually disappears below the surface oi the cylinder (see Fig. 2) but when the clamp 2 is moved toward the outer end of the slot 1e it will rise in the slot and project above the surface of the cylinder (see Figs. l and 6.) To the clamp block 2 is attached a rod 2b which extends in a channel l leading from the slot ld toward the end of the cylinder, and said rod 2h is provided on its extremity with a linger 2Z which projects suticiently above the surface of the cylinder to engage the edge of a plate P slid on the cylinder.l

Before the first plate P is placed'on the cylinder the clamp 2 is moved back into the lower portion of the slot'ld and disappears below the surface of the cylinder as described (see Fig. 2) then the plate is slipped onto the cylinder, and as it is slid inwardly thereon its forward' edge engages the finger 2c and moves rod 2P thereby causing clamp 2 to rise beside and against the inner edge of the plate (see Fig.`1). Then when the second plate P is slid on the cylinder it catches the said clamp 2 and causes it to move the first plate P on until it abuts against a stop 1W on the cylinder which arrests the plates in correct printing position. The second plate P is then clamped against lineal movement on the cylinder, by means of a slide block or clamp 3 (Figs. 1-5) which is strung on a threaded bolt 4 by which the clamp can be vmoved longitudinally of the slot. Said bolt 4 extends through the head lr of the cylinder and into a slotlk in the cylinder, said slot being dove-tailed or undercut at 1m for engagement with danges 3L on the sides ofthe clamp 3; Bolt 4 has a collar 4 on it bearing against the inner side of head l" to prevent longitudinal dis` placement oi the bolt. At the outer end of the slot lk is an enlarged recess 1, and when clamp 3' is backed out into this recess (by reversely rotating bolt 4) it can be turned over into the position indicated-in Figs. 2 and 5, so that it disappears below the surface of the cylinder; in which position the plzites P can be easily slid on or 0H the cylinter.

lVhen the clamp 3 is entered in slot lk it cannot turn on bolt '4, and consequently can f be moved backward or forward in the slot,

, surface of the cylinder,

by properly rotating bolt 4. Vhile in en gagement with the slot the clamp projects above the surface of the cylinder into plate engaging position (see Figs. l and 4). If the clamp 3 be backed out of slot lk into recess 1, it will turn with the bolt and may then be turned over into the position indi. cated in Fig. 5, and disappear below the so that plates P can be readily slipped on or oit' the cylinder. In order to facilitate turning clamp 3 into either operative )osition ,(Fig. 4), o1` inoperative position iFig. 5), it is formed with clamp 3 is backed out of slot 1k into recess 1, and the clamp starts'to rotate with bolt 4, lug 3d will strike in 5 and arrest the rotation of clamp 3, Wien the clamp is in the position indicated in Fig. 5, in which the clamp has disappeared beneath the surface of the cylinder. Then when it is desired toA re'e'nter clamp 3 into slot 1 k bolt 4 is turned in the opposite directiomand clamp 3 turns therewith until lug 3E rests the rotation of clamp 3 when it is in exact posit-ion tov renter slot 1k. In this Way the clamp 3 is readilyshifted into engaging or disengaging position, and the operator is not annoyed or delayed in ositioning the clamp. After both plates ave been slid on the cylinder as described, the bolt 4 is turned so as to first bring clamp 3 into the position indicated in Fig. 4 so that its iianges 3 can enter the grooves 1m in the sides of slot 1k, and so that it projects above the surface of the cylinder, 1n position to engage aplate; then lbolt'4 is rotated so as.

to move clamp 3 inward against the edge of the second plate P and cause the latter to engage clamp 2 and cause it to hold the first plate P in position, (see Fig. l). Thus it is practicallyfyonly necessary in securing the plates on the cylinder to operate bolt 4, as the'intermediate clamp 2 will be automati c'ally positioned by the act of slipping the iirst .plate on or off the cylinder.

I have illustrated but one set of platefastening devices on the cylinder, but ob viously more sets could be used on each cylinder according to the size and number of plates to be secured thereon.

Having described my invention what l claim vas new' and desire to secure by Letters Patent thereon is;

1. In combination, a plate cylinder havingr a slot, and a plate clamp slidably mounte in said slot and ada ted to engage tiie edge of a plate, means or moving said clamp longitudinally of theslot, said clamp being adapted to disappear beneath the surface of the cylinder when moved to one end of the slot, and to project above the surface of the cylinder when moved tothe other end of the slot.

2. In combination, a plate cylinder having a slot, and a platecvlamp adapted to engage the edge of ,a plate slidably mounted in said slot, said slot being deepened at one e'nd so that when the clamp is retracted it will disappear beneath the surface of the cylinder, substantially as described.

3. In combination, a plate cylinder havingr a slot, a plate clamp .adapted to engage strikes pin 5, and ari j cured in said slot and adapted to disappear beneath the. surface of the cylinder when 'as the plate is slid forward on the cylinder.

the edge of a plate sldably mounted in said' slot, and means for shifting the clamp in the slot, said slot being enlarged at one end-so that when the clamp is moved to that end of the slot it will disappear.

- 4. In combina-tion, a plate cylinder having a slot a plate clamp slidably mounted in said slot, said slot being deepened at one end so that when the cla'mp is retracted it will disappear, vand means connected with said clamp and adapted to be engaged by a plate to move the clamp into operative position.

5. A plate cylinder having a longitudinal slot, a yplate clamp movably secured in said slot and adapted to disappear beneath the' surface of the cylinder when moved to one end ofthe slot, and a rod connected with said clamp and adapted to be engaged by the edge of a plate and m'ove the clamp into operative positie-nas the plate is`positioned on the cylinder.

6. A plate cylinder adapteld to carry tubular plates having a longitudinal slot deepened at one end, a plate clamp movably semoved to the deeper end of the slot, a rod connected with said clamp and having a finger on its free end adapted to be engaged bythe edge of a plate and be thereby caused to inove the clamp into operative position 7. In combination, a plate cylinder having a slot, av bolt extending longitudinally through said slot, a longitudinally movable plate clamp on said bolt adapted to roject above' the surface of the cylinder and) mve toward the plate when in. plate engaging position, and to turn withthe bolt and disafter it has been moved away from the plate.

8. In combination, a plate cylinder having a slot, an enlarged recess .at the end of said slot, a bolt extending longitudinally through said reccss and slot, a movable clamp on said 'bolt adapted whenfentered in the slot to proplate-engaging position, and to turn on the e ]ect above, the surface of the cylinderin bolt and disappear ben th the 'surface of lthe cylinder when it is and into the recess.

moi d out of the slot soI 9. -In combination, a plate cylinder having l a slot, a bolt extending longitudinally through said slot, a plate clamp on said bolt' adapted to project above the surface of the cylinder when engaged vwith the slot, and to turn on the bolt and disappear beneath vthe surface of the cylinder when disengaged from the slot, yand means for arresting the rotation of the clamp when it has been1 y turned to disappearing position, or returned toposition for rentry into the slot.

10. In combination, a plate cylinder having a slot, a recess at the end of the slot, a bolt extending longitudinally through said v slot and recess, a plate clamp on said bolt adapted .when in the. slot to project above the surface of the cylinder in plate-engaging position, and to turn on the bolt and disap pear .beneath the surface of the Icylinder when it is moved out into the recess, and means to arrest the rotation of said clamp when in the recess so as to stop the clamp in disap earing position, or in position to renter t 1e slot. l1. In combination, a plate cylinder havino' a clamp-receiving slot, afrecess at the en of said slot, va rot-atablebolt lying'pin said recess and slot., and a pin projecting into said recess; with a plate clamp strung on said "bolt and adapted to project above the surface of the cylinder in plate engaging position when in the slot; andato' turn with the bolt and disappear below the surface of the cylinder when moved into the recess, said clamp having lugs adapted to engage said pin, to prevent rotation of the clamp on the bolt after the clamp is in disappearing posi: tion, or has been turned back to slot-engaging position, substantially as s et forth.

In testimony that I claim the foregoing as my own, I affix my signature in presence of tWo witnesses. y

. HENRY F. BEC'HMAN.

Witnesses:A

F.l W.' DUNNING, IRVI'NG K. STORY.