US2659303A - Pump actuating means for rotary duplicating machines - Google Patents

Description

Nov. 17, 1953 R. w. QUIRK 2, ,30

PUMP ACTUATING MEANS FOR ROTARY DUPLICATING MACHINES Filed Dec. 6, 1948 8 Sheets-Sheet l Nov. 17, 1953 R. w. QUIRK 2,659,303

PUMP ACTUATING MEANS FOR ROTARY DUPLICATING MACHINES Filed Dec. 6. 1948 8 Sheets-Sheet 2 A 4 ii 212 215 232 255 Z6 mil) Z2 7/0 274 J. 23

Nov. 17, 1953 R. w. QUIRK 2,659,303

PUMP ACTUATING MEANS FOR ROTARY DUPLICATING MAfiHINES R. W. QUIRK PUMP ACTUATING MEANS FOR ROTARY DUPLICATING MACHINES Filed Dec. 6. 1948 8 Sheets-Sheet 5 aZ5? M67122)": flerz fi/arren pair]? Nov. 17, 1953 R. WQQUIRK 2,659,303

PUMP ACTUATING MEANS F OR ROTARY DUPLICATING MACHINES Filed Dec. 6, 1948 8 Sheets-Sheet 6 1 J0 Z 1 f Nov. 17, 1953 R. w. QUIRK 2,659,303

PUMP ACTUATING MEANS FOR ROTARY DUPLICATING MACHINES Filed Dec. 6, 1948 8 sheets sheet 8 Patented Nov. 17, 1953 PUMP ACTUATIN G MEANS FOR ROTARY DUP CAT MAC INES Robert Warren Quirk, Chicago, Ill.,

assignor to Ditto, Incorporated, Chicago, 111., a corporation o West ir n a Application December 6, 1948, Serial No. 63,703 4 Claims. (01. 101-1325) My invention relates to duplicating machines, and more particularly to a liquid process duplicating machine.-'

In duplicating machines that utilize a drum for carrying the master against which sheets are engaged to imprint matter from the master on said sheets, a feed tray is provided from which sheets are fed one at a time to engage with the master on the drum, and it is an important purpose of my invention to provide new and improved driving means for the feeding apparatus for said sheets to transfer the sheets from the stack one at a time to feed rollers and nto en a m nt with the master on a d d m- It i an important purpose .of my invent t p o ide. a driv n m h n sm o said eed means that is of a simple and cheap construco bu w i s iable nd wh h is ef ect v o first p k up a he t from he to of a ta k and e i to the ight o a pa o ee ro e s n the ti aid f e ro e s as to f ed h sheet in P9$ t hetwe 3P im es ion roller nd e d um o whi h o master heet is located, at such a rate that the sheet is travel ing at the same speed as the surface speed of the drum when it engages with said drum and impression roller; so as to preventany buckling of the sheet as it comes into engagement with the master.

"It is a further purpose of my invention to provide a driving means "of the ahove mentioned character that also operates a pump for sup,- plying the solvent liquid that "is utilizedfor moistening the impression sheet by meansofa moistening roller, Which is "one of the" feed rollez s above referred to.

It i a pe Pu pose of my i v nt to ovide a driving means for the sheet feeding roller and one" of the pairedfeed rollers utiliz'ed in a duplicating machine of this character, that com rise a emana d .b m ans o a ca ith t is operated hy rotation of the drum carryingfthe master s t. said ev r b in conne tqdwith one end of a flexible cable that'ha's the other n t eo c n ect w th a t sio Sprin an pe at n to mate m r f rm ng he drive members of one way driving neans'in the roa of over runni ng clutches, connected with the feed roller that removes a sheet from the stack and with the one feed roller of the pair that feeds the sheet to the impression roller; that the roller that feeds the sheet from the stack is actuated when the lever is moving in "one direction and the driven roller of the paired feed rollers is actuated when the lever moves in the opposite direction.

It is another purpose of my invention to provide a pump for the solvent fluid that includes a metal bellows and to provide priming means for the pump that operates to compress the bellows by means of alever "that is manually operated and which operates the bellows in a'similar manner to that occurring when the usual pumping action takes place, which is accomplished by themovement of the cam actuated lever.

It is another specific purpose of my invention to provide a lever actuating means for the pump that has a metallic bellows of the above mentioned character, that comprises a cam surface on a sector-shaped lever, whichalso actuates the driving mechanism as above set forth.

My invention is adapted for use on liquid process duplicating machines that utilize a moistening device of the wiping pad type as well as a moistening device of the porous tube type.

Other objects and advantages of my invention will appear as the description of the drawings proceeds. I desire to have it understood, how'- ever, that I do not intend to limit myself to' the particular details shown or described, except as defined in the claims.

In the drawings:

Fig. 1 is a top plan view of my improved duplicating machine.

Fig. 2 is a vertical sectional view thereof taken on the line 22 of Fig. 1.

Fig. 3 is a fragmentary sectional view taken on the line 3-3 of Fig. 2.

Fig. 4 is a fragmentary sectional view through the feed rollers showing one form of moistening means for the moistening roller, on an enlarged scale.

'Fig. 5 is a fragmentary sectional view taken on the line 55 of Fig. 4.

Fig. 6 is a vertical sectional view taken on the line 6-6 of Fig. 2, on a somewhat enlarged scale.

Fig. 7 is a similar view taken on the line 1-1 of Fig. 2.

Fig. 18 is a vertical sectional view taken on the line 88 of Fig. 6.

Fig. 9 ma horizontal sectional view taken on the line 9-9 of Fig. .8.

Fig. 10 is a fragmentary side elevational view of a portion of the driving mechanism, showing the same in a different position than that shown in Fig. 8.

Fig. 11 is a vertical sectional view on an en larged scale through one of the over-running clutch members.

Fig. 12 is a section thereof taken on the line IL I2 of Fi 11.

Fig. 13 is a fragmentary vertical sectional view through the feeding and moistening means, and showing a portion of the drum and a modified form of moistening mechanism, and

Fig. 1a is a vertical sectional view taken substantially on the line |4|4 of Fig. 13.

Referring in detail to the drawings, my improved duplicating machine is provided with a frame that includes a pair of side plates and 2|, which are connected by means of a plurality of transverse frame members 22. A shaft 23 is journaled in suitable ball bearings 24 mounted in the side plates 29 and 2|, the drum 25 being mounted on the shaft 23 to rotate therewith, the mounting on said shaft including hub portions 26 on spiders 21 on said drum, which are mounted in fixed position on enlargements 28 provided on the shaft 23. Reinforcing ribs 29 may be provided on the inner face of the cylindrical body portion 25 of the drum.

The shaft 23 may be driven in any suitable manner, but is, preferably, rotated by means of the crank 30, which may be provided with a suitable handle 3|, and which is fixed by means of a pin 32 to a stub shaft 33, which is rotatably mounted in a bearing 34 provided on a bracket 35 that is mounted on the side plate 20. The stub shaft 33 is also rotatably mounted in the bearing portion 36 provided on the bracket 35 and in a suitable opening in the side plate 29, a collar 31 being fixed to the shaft 33 on the inner side of the plate 20 to hold said shaft against endwise movement. The hub portion 38 of a gear 39 is fixed on the shaft 33 and the gear 39 meshes with a gear 40 that has a hub portion 4| fixed on the shaft 23, the drum 25 thus being rotated by means of the crank 39 in the opposite direction to the movement of said crank 39. The direction of rotation of the drum is counterclockwise as viewed in Fig. 2.

The side plates 20 and 2| have removably mounted thereon sheet metal cover plates 42 and 43 providing housings for the driving means for the drum and other moving parts, as will be described below. The shaft 23 has a reduced extension 44 extending into the space between the side plate 2| and the cover plate 43. The extension 44 has a flanged collar 45 having a hub portion 46 attached thereto, a cam plate 41 being fixed to the flange 45 of said collar. The cam plate 41 has a high portion 48 and a low portion 49. The high portion 48 of the cam is concentric with the axis of rotation thereof, while the low portion 49 of the cam gradually rises from a mid-point to the curved portion 50 that connects said low portion with the high portion 48 and gradually descends from the curved portion 5| that joins the high portion 48 with the low portion 49. Thus a follower that engages with the cam surface 49 will be moved to the right as viewed in Fig. 8 as the cam plate 41 rotates in a clockwise direction with the drum 25, and will remain in its most advanced position to the right during the time that the follower engages the portion 48 of the cam, and then returns toward the left as the follower rides along the descending portion of the cam 49 from the point 5| on the cam to the center of the curved portion 49, which is curved on a very much greater radius of curvature than the portion 46.

A pivot member 52 is mounted at 53 in the side plate 2| projecting outwardly therefrom and having a sector-like lever 54 pivoted thereon, a spacing sleeve 55 being provided between the sector-shaped lever 54 and the side plate 2|,

which has a reduced portion 56, which is received in a suitable opening in the lever 54 so that the lever 54 is fixed to the spacing sleeve 55, fitting against the shoulder provided between the reduced portion 56 of said spacing sleeve and the main body portion thereof. The outer end of the pivot member 52 is slightly upset to hold the sleeve 55 in position on saidpivot member. Thus the sector-shaped lever 54 is located at a definite spaced position from the side plate 2 A pivot pin 51 projects toward the side plate 2| from the sector-shaped lever 54 and has a roller 58 rotatably mounted thereon, said roller engaging the cam plate 41 and thus constituting the follower above referred to. The pin 51 has an annular enlargement 59 thereon to prevent the roller 58 from moving to the left as viewed in Fig. 9.

The lever 54 also has a pin 60 projecting therefrom toward the side plate 2| to which one end of a coil tension spring 6| is connected, the other end of the coil tension spring 6| being connected with a post-like member 62 fixed in the side plate 2| and projecting outwardly therefrom. The spring 6| thus serves as means for maintaining the roller 58 in engagement with the cam surface of the plate 41. The sector-shaped lever 54 also has an ear 63 projecting from the same at one end of a cam surface 64 provided on said lever 54. The cam surface 64 has a portion 65 that is engaged by the follower 66, to be described below, and which extends to the heel portion 61 of said lever 54 to the left of the follower 66 as viewed in Fig. 8. The position of the parts in Fig. 8 is one extreme position of the lever 54. The lever 54 has a curved recess 68 therein to accommodate the curved edge of the flange 45 on the flanged collar. As the cam 58 rides up on the rising surface of the cam 49 from the position shown in Fig. 8 toward the point 59 on said cam the lever 54 will be swung to the right as viewed in Fig. 8, which will cause the follower 66 to ride along on the cam surface 65, which surface gradually rises toward the heel portion 61 so as to cause the follower 66 to be moved downwardly by such movement, for a purpose to be described below. The other extreme position of the parts is shown in Fig. 10, in which the roller 58 is shown as being in engagement with the high part 48 of the cam 41.

The ear 63 has a pin 69 projecting outwardly therefrom, to which one end of the flexible member 10, such as a steel cable, is secured, the loop 1| being provided at one end of said flexible member for engagement over the pin 69, the loop being formed by welding the end of the flexible member 10 to the member 10 at a suitable point spaced from the end thereof or by securing said end to the member 10 in any other suitable manner. The other end of the member 10 has a long coil tension spring 12 connected therewith by engagement of a hook 13 on one end of said spring 62 with a suitable loop 14 in the end of the flexible member 16. The said end of the flexible member 19 may be provided with suitable clamping means 15 thereon for adjusting the size of the loop 14 to adjust the tension of the spring 12. Said spring 12 at its end remote from the hook 13 has a loop 16 thereon that engages around a pin 11 projecting from the side plate 2|. When the parts are in the position shown in Fig. 8 the spring 12 is under a slight tension, which increases considerably as the parts move from the position shown in Fig. 8 to that shown in Fig. 10.

pulley 18 in driving the shaft 81, and releases to be free of the shaft when rotating in a counterclockwise direction as viewed in Figs. 8 and 10. The roller I22 has a limited swinging movement about the axis of the pivots ||9 determined by the length of the arcuate slots II8.

A feed tray is provided, which has a body portion I23 providing a flat surface upon which the stack of sheets I24 rests. Said feed tray has depending side flanges I25 and depending end flanges I28 and I21, which have inturned flanges I28, I29 and I30, respectively, to stiffen the same. Said feed tray also has upstanding guide members I3I, which are provided with outward offsets I32 therein to provide recesses or pockets in which pads I33 of compressible material, such as sponge rubber, are mounted. Said guide members also have tapering end portions I34 and I35, and spaced from said tapering end portions are recesses I38 to accommodate the bar or shaft I in the position shown for the roller I22 in Figs. 2 and 8.

A transverse member I31 connects the side plates 29 and 2| having end flanges I38 thereon that are secured to the side plates in any suitable manner, as by means of the bolts I39 and nuts I40. Said transversely extending frame member I31 has headed members |4| projecting forwardly therefrom through suitable openings in the flange I21 for detachably securing the feed tray to the member I31. The feed tray is reversible, the flange I26 being adapted to be secured to the member I31 in a similar manner to that shown for the flange I21. This reversibility is desirable because it is thus possible to place the sponge rubber pad members I33 closer to the roller I22 when this is desired, this being desirable when shorter sheets than the sheets I24 are to be fed into the duplicating machine.

The guide members I3I are adjustable toward and away from each other to accommodate different widths of the sheets I24, being mounted on brackets I42, which are transversely adjustable in a slot I43 in the feed tray I23 and are provided with suitable clamping members I44 for clamping the same in adjusted position in said slots. In Fig. l of the drawings the guide members I3I are shown in their most widely spaced apart relation.

The transverse member I31 has an upwardly inclined portion I45 terminating in a horizontal lip I48, the portions I45 and I48 serving as a portion of a paper guide, which also comprises an upper guide member that has a, downwardly inclined portion I41 that converges toward the inclined portion I45 and has a horizontal lip portion I48 extending substantially parallel to the lip portion I48 and in closely spaced relation thereto. The inclined guide portion I41 is provided on a transverse member I49 extending between the side plates 20 and 2|, said transverse member I49 also serving as mounting means for a holder I50 for a wiper element I5I, which serves as part of the moistening means for the feed roller.

The member I49 is mounted on a pair of pins that are mounted on the side plates, said pins having reduced headed over portions I52 secured in openings in the side plates and enlarged head portions I53 that support the transverse member I49, and the wiper element holder I50 has a transverse flange I54 and a depending flange I55 providing a channel in which the heads I53 of the pins are received. The entire assembly comprising the member I49 and the holder I50 for the wiper I5I is thus free to swing on the pins I53, the members I49 and I50 being secured together in any suitable manner, as by means of rivets I58. The location of the pivots I53 is such that the tendency is for the wiper element I5I to swing toward the sheet moistening roller I00. The wiper element I5I is made of felt or similar material and is held in position by being forced between the flange I55 and the body portion I50 of the holder, the flange I55 having a slightly out-turned edge I51 to aid in guiding the wiper element I5I into position, and is spaced from the sheet engaging surface I00 of the roller so as to leave a slit between said out-turned edge I51 of said surface.

A trough-like recess I58 is thus provided between the surface of the moistening roller and the wiper element I5I, to which the liquid that is used for moistening the sheets is supplied from a feed tube I59 through suitable feed openings I80, the liquid being indicated by the numeral I8| in Fig. 4 of the drawings. In order to flx the holder I50 in position on the member I49 and prevent any shear on the rivets I58, the member I49 is provided with an upward offset I62 and a transversely extending portion I which receives the adjacent portions of the member I50 face to face. The side edges of the pad I5I end short of the holder so that it will not interfere with the swinging motion of the holder and guide member about the pivots I53.

By swinging the entire assembly slightly clockwise around the pivots I53, as viewed in Fig. 2, the entire assembly comprising the members I49 and I50 can be removed from the pivot pins I53, this being accomplished by lifting upwardly on the member I49 as soon as the guide portion I48 is free of the roller I00, removal of the same being possible as soon as the pivot members I53 pass the lower edge I51 of the flange I55. The wiper pad I5I can then be easily removed and replaced with another. It will be noted that the edge portion of the guide I48 is in such a position that it can not engage the roller I00 in a manner to damage the same.

It will be noted from Fig. 4 that the holder I50 and its flange I55 are bent slightly at I68 and I81 so as to incline the flange I55 and the body portion of the holder I50 toward the roller I00, and that the lower end of the body portion I50 is curved as shown at I58 in Fig. 4 substantially concentrically with the surface of the roller I00 so that the pad I5I will conform closely to the surface of the roller I00, being compressed between the member I50 and the roller I00 as indicated at I89. It will also be noted that the wiper pad I5I has its longitudinal edges confined between the transversely extending portion I54 and the guide portion I48.

The solvent liquid |8| is supplied to the feed tube I59 from a supply tank I10, which is mounted between the side plates 20 and 2 I, having its end walls I1| secured face to face to said side plates in any suitable manner. Said supply tank is provided with a suitable flll opening I12 closed by means of a screw cap I13. A flexible conduit I14 extends from an outlet connection I15 in the bottom of one of the end walls |1|, which outlet connection extends through an opening in the side wall 2| as shown in Fig. 6. Said flexible tubular supply conduit I14 extends to an inlet connection I18 provided in a pump body I11. Said pump body has a passage I18 therein (see Fig. 8) which extends vertically of said pump body and into a flexible metal b ncws 119 secured in liquid tight relation to the lower end of the pump body I11.

A bracket I80 is provided on the side plate 21, which has a horizontally extending portion I8I at its lower end that has an opening therein through which the lower 'nd wa111sz of the bellows I19 extends, the bottominost flange or corrugation I33 of said bellows normally rest= ing on the bracket portions I 61. Said bracket I80 also has an upper horizontally extending portion I80, which has a flangedguide sleeve I85 mounted in an opening therein, in which the follower 66 is longitudinally slidably mounted. Said follower 66 has a threaded lower end por tion 186 that is screw-threaded into a screwthreaded opening I 81 in the upper end of the pump body portion I11 and has a socket or recess I88 therein, in which one end of a compression spring I89 is mounted, said spring I30 being mounted between the tapering inner end of the socket I86 and a ball check valve Illa": that is held in engagement with a seat I9I provided at one end of a passage I92 extending long'itudinally of the body portion 11 and opening into the lower end of the passage I93 that has the threaded portion I81 into which the threaded end I86 of the follower 65 is screwed. Said follower also is provided with a fiat faced enlargement 194, by means of which the same maybe engaged by a suitable wrench.

The inlet connection I16 opens into the passage I18 and an outlet connection 1% leads from the passage I92, the passage I18 leading into the passage 192 through the valve seat I191. The outlet connection let has a flexible tubular conduit 196 connected therewith, which has an inlet connection 191 at its other end thateX- tends into the feed tube I59. The feed tube I59 extends through the side plates and 2| and at the end remote from the inlet connection I91 has a plug I98 and a cap I99 mounted therein to close off said end of the feed tube. A flange 200 in the form of a collar mounted on the feed tube is provided for securing the feed tube in fixed position on the side plate 2 I The side plates also have flanges 20! on a guard plate 202 secured thereto by suitable securing elements, said flanges having openings therein through which said feed tube passes.

The guard plate 202 extends between the drum and the roller moistening apparatus, as well as the roller I00 and said drum 25, to thus prevent any solvent li uid I 6I from engaging the drum above the moistening apparatus and also serving as a guard or shield to prevent any drops of said liquid from inadvertently coming in contact with the copy sheets I24 in passin from the'feed rollers tothe drum. n

The sector-shaped lever 54, in moving 'i'n a counterclockwise direction from the position shown in Fig. 8 to that shown in Fig. 10, moves the follower 66 downwardly and along with it the body portion I 11 of the flexible diaphragm pump, causing the flexible diaphragm portion I19 thereof to be compressed between the body portion I11 and the lower horizontally extending bracket portion I 8I. As the follower "66 moves downwardly the liquid in the diaphragm portion I19 will be put under pressure and the ball valve I90 will be raised off its seat against the compression of the spring I92 and cause a predetermined amount of solvent liquid I6I to flow through the flexible tubular member 196 and into the spray tube I59 to be discharged through the horizontally extending row "of spray openings I80, which are substantially uniformly spaced along the tube I59 onto the roller I06 and into the trough I58 provided between the roller I00 and the pad 151, the combined action of the spraying means and the wiper pad I51 causing the roller to be uniformly coated with a thin coating of the solvent liquid.

Thiscoating' of the moistening roller 00 takes place as said roller I00 is rotated in a clockwise direction by the movement of the sector'- shaped lever 54 from the position shown in Fig. 8 to that shown in Fig. 10. Thus the roller 100 is continuously'moistened as it is rotated and the moistening operation ceases as soon as the rotation of the roller 100 is terminated by the roller 5'0 reaching the point 50 of the cam and traveling from that point on along the high portion 48 of the cam.

The roller I00 has a feed roller 203 cooperatirig therewith, the roller 203 being mounted on a core 204, which has reduced end portions 295 that are freely rotatably mounted in ball bear-.

ings 206, the bearings 206 being mounted in suitable cradles 201 providedin the upper ends of levers 208 that are mounted on pivots 209 extending inwardly fromthe side plates 20 and 2| The levers 208 have downward extensions 2P0, which are provided each with 'a row of openings 2II. Springs 212 have hooks thereon that are engaged in one of the openings 2I I, the other ends of said springs having hooks 2I3 thereon that engage over pins 2M extending inwardly from the side plates 20 and 21. The springs 212 are under tension and act to swing the levers 208 about the pivots 209 in a counterclockwise directionas viewed in Fig. 2, causing the roller 203 to yieldingly engage the roller I00.

Means is provided for movingthe roller 203 away from the roller I06, which is desirable when the machine is not in operation, in order to prevent any solvent liquid that might be on the roller I00 from being transferred to the roller 203. Said means comprises links 2I5, which are connected with the extensions'2I0 or the levers 208 by means of pins 2 I6, each pin 2I'6 passing through one of the openings 2I'I and an opening in the'end of the link 2I5, the connection being adjustable, so as to vary the throw of the lever and thus the spacing of the roller 203 from theroller I00 when the links are actuatedfby the choice of openings 21 I, with which the links 2 I5'are connected.

Thelinks 2I5 are connected with a rotatable shaft 211 by means of posts 2I8 extending upwardly fromthe shaft 2I1. Thus if the shaft 211 is rocked so as to move the post-like members 218 in a counter-clockwise direction as viewed in Fig. 2, the roller 203 will be moved away from the roller I 00 against the action of the spring 212, whileif the shaft is rocked in the opposite direction the roller 203 will be moved toward the roller I00, The posts 218 are mounted in slots 2I-9' in the links'2 I 5-so that there will be a slight amount er iost motion between the posts M0 and the links -2I5 so as to permit the springs to hold the roller 203 yieldingly in engagement with the roller I00.

"I'lieshaft 2 I1 is rotatably 'mounted in openings in the side plates 20 and 21 :as shown in Fig. '7, and has a reduced .portion220 withiwhich a set screw 221 engages that is mounted in a tubular arm 222 to fix said arm on said shaft 2I1against both endwise movementand rotational movement relative thereto. The arm 222 has 'a bore 223 therein, into which the-end of a lever 224 extends.

1 l The lever 224 is slotted as at 225, at the end thereof that is within the bore 223, and a pin 226 extends crosswise of the bore 223 through the slot 225, thus preventing any rotation of the lever 224 relative to the arm 222. A compression spring 221 is mounted between the lower end of the lever 224 and the reduced portion 220 of the shaft so as to exert an upward pressure on the lever 224. The lever 224 is bent at 228 to provide a horizontally extending portion 229 that extends through a suitable arcuate slot in the side plate 2|) and provides a handle by means of which the lever 224 is rocked, thus rocking the shaft 2I1. Due to the provision of the spring 221 the handle portion 229 will frictionally engage the wall of the slot in the side plate so as to hold the lever 224 in adjusted position.

The shaft 2|1 has an eccentric 230 fixed thereon, which is rotatably mounted in an opening in a hook-like lever 23I that has a hook-like end portion 232 thereon providing a shoulder 233 and a fiat face 234 on said hook-like member 2|5 engaged by corresponding faces of a bar 235 that is rectangular in cross section. The bar 235 is fixed to a pair of levers 236 that are pivotally mounted on pins 231 that project from the side plates 28 and 2 I, and which have curved recesses 238 therein providing cradles in which the ball bearings 239 are mounted.

The ball bearings 239 rotatably support a roller 240, which has a core portion 24I that has reduced end portions 242 that are rotatably mounted in the ball bearings 239. Thus the roller 248 is freely rotatable in its bearings, and as the springs 2I2 tend to move the members 2 I5 to the right as viewed in Fig. 2 endwise of themselves, and thus to rotate the shaft 2|1 in a clockwise direction, the rotation of the eccentric 230 will cause the hook-like member 23| to have a tendency to move toward the right, as viewed in Fig. 2, and thus swing the levers 236 about the pivots 231 in a counter-clockwise direction as viewed in Fig. 2, yieldingly pressing the roller 240 into engagement with the surface of the drum 25.

when the lever 224 is moved by means of the handle 229 to rock the shaft 2I1 in a counterclockwise direction from that shown for the position of the parts in Fig. 2, the hook-like member 23| will move toward the left in Fig. 2 due to the action of the eccentric 230 and also downwardly, which will permit the roller 240 to drop downwardly away from the drum 25 by the action of gravity.

The lever 243 has a bearing member 244 secured thereto at one end thereof, and is spaced from the side plate 2| by means of a washer 245. The bearing member 244 is mounted on the shaft 2 I1 so as to be freely rotatable on said shaft 2|1. Said bearing member 244 also has a reduced end portion 246, upon which is mounted to rotate with the member 244 a lever 241. The lever 241 is cut away on a curve, as at 248, and terminates in an enlargement forming a curved finger 249 which engages with the bottom I82 of the metal bellows I19, forming the lower portion of the pump.

The end of the lever 243 opposite that having the lever 241 connected therewith has a handle 250 thereon that extends through an arcuate slot 25I in the side plate 2 I. A pin 252 extends toward the cover plate 43 from the lever 243 and a pin 253 projects outwardly from the side plate 2|, a tension coil spring 254 being connected with the pin 253 and the pin 252 and tending to swing the lever 243 in a clockwise direction as viewed in Fig. 8, thus tending to hold the finger 248 away from the bottom wall I82 of the bellows I19. By moving the handle 258 downwardly toward the lower end of the slot 25| the lever 2 43 will be moved in a counter-clockwise direction about the shaft 2|1, moving the finger 243 on the lever 241 into engagement with the bottom wall I82 and compressing the bellows I19 so as to unseat the valve I90, forcing solvent liquid through the flexible feed conduit I96 to the feedtube I59, thus priming the roller moistening mechanism.

A receiving tray 255 has a. flat sheet metal body portion and is provided with an up-turned wall or flange 256 at its outer extremity, which is provided with a suitable protective strip 251 of rubber or similar material along its upper edge portion. The receiving tray is shown in retracted position in Fig. 2. It is adapted to be moved outwardly to a desired extent to accommodate the copy sheets after they are discharged from the drum, the side edges of the body portion 255 being slidably mounted on the upper guide flanges 258 and lower guide fingers 259 formed from the laterally extending flanges 268 provided on the brackets 26| that are secured to the side plates 20 and 2| by suitable securing elements 262 (see Figs. 1, 2 and 3) The guide flanges 259 are merely extensions of the flange 260, while the fingers 258 are struck upwardly from the material of the flanges 260. The body portion of the member 255 has a slightly wider portion 263 adjacent the end that has the flange 256 thereon, providing an oilset or shoulder 264 between said wider portion 263 and the narrower main body portion of the member 255, which is adapted to be engaged by the fingers 258 to limit inward movement of the member 255, as it will be obvious that the upwardly extending members 258 will engage with the edges of the offset 264 upon a small additional inward movement of the receiving tray 255 beyond the position shown in Figs. 1 and 2.

The transversely extending frame members 22 have upwardly directed flanges 265, which are secured to the side plates 20 and 2| by means of fastening elements 266. Said transverse frame members have upwardly curved portions 261, which follow the contour of the side plates 23 and 2 I, one of said upwardly turned portions 261 having a channeled strip 268 of rubber or similar material provided along its top edge for protection purposes, the receiving tray 255 engaging with said member 268 whereby said receiving tray is additionally supported. It will be noted that the cover plates 42 and 43 have inwardly curved marginal edges 269 that extend over the marginal edges of the side plates 20 and 2|, this curvature of the cover plates stiffening the same and causing the same to firmly frictionally grip the marginal edge portions of the side plates.

The drum 25 has a clamping bar 218 mounted in a transverse slot 21| therein, the drum being provided with an inwardly ofiset rib portion 212 to provide for the slot 21 I. The clamping bar has an outwardly inclined marginal portion 213, which cooperates with a beveled corner 214 of the slot 21| to clamp the edge portion of a master sheet 215 in the beveled portion of the slot. Means is provided for moving the clamping means out of clamping position, comprising a lever 216, which has an operating handle 211 thereon for swinging the lever about its pivot and move the cam 288 provided on the end thereof into the path of the reduced portion 28| on one of the pins 282. A pair of said pins 282 is provided, which are longitudinally slidably mounted in openings 283 in the i3 inwardly offset portion j212of the drum 25', and which are screw-threaded fit 284, to engage the screw-threaded openings 285 in the clamping bar 210. A suitable tool can be engaged with the slot 283 in the end of each of the members! toadjust the position thereof and thus the position of the ends 20I of said pins 282. Said pinsaie provided with enlargements 281 thereon; which act as stop means to limit outward movement of the clamp 213 away fromthe drum. Suitable feet of cushioning material280 for supporting themachine on any suitable support are provided on the transverse members 22. I

Instead of using the moistening and feed roller I shown in the form of the invention disclosed in Figs. 1 to 12, inclusive, a modified form of moistening device may be utilized in my duplicating machine, which is shown in Figs. 13 and 14. The construction of the machine is the same as in the form shown in Figs. 1 to 12, inclusive, ex-

cept for the moistening means, and the same reference numerals are applied to the parts in Figs. 13 and 14 that correspond to the parts and are duplicates of the parts shown in Figs. 1 to 12, inclusive. I49 9. guide member I49 is provided, which has the inclined portion I41 corresponding to the portion I41 of the guide member I49 and the portion I48, which corresponds to the portion I48 of said guide member I49. The member I49", however, is provided with an upper transverse portion 289, which terminates in a guard lip 290 extending between the drum and the moistening and feed roller, andis secured by means of suitable securing elements 29I to brackets 292 mounted on the side plates and 2|. The moistening roller 293 is made with a porous wall portion that is made of sintered metallic particles and is fixed on a collar 294, which in turn is fixed on the shaft 91' corresponding to the shaft 81, previously described, and driven in the samemanner. The porous member 293 fits against-a shoulder 295 on the sleeve 299 which is fitted within a flange 296 of a tubular bearing, member 291 in which the roller 293 is rotatable, a suitable compressible gasket 293 being provided between the end of the roller 293 and a shoulder 299 provided in the bearing 291 to provide a liquid tightioint between the bearing 291 and the roller 293. The solvent liquid, which is indicated by the numeral 300, is supplied to the roller 293 from a supply tank I mounted between the side plates 20 and 2| and having a fill opening 302 closed by means of a suitable cap 303. A supply pipe 304 extends through the one side plate 20 from the tank 30I to a pipe 305 that leads into the bearing 291. The pipe 305 also has a branch 306 that extends to a tank 301 mounted in suitable clips 308 provided on the side plates 20 and 2 I. A valve 309 is provided in the pipe 304 to control the supply of solvent liquid 300 to the porous roller 293. An overflow pipe 3|0 is also provided, which extends from the upper portion of the bearing member 291 to the upper portion of 'thetank 30I, a valve 3| I controlling communication through the pipe 3I0. Common operating means 3| 2 is provided for the valves 309 and 3| I. s v

When it is desired to start the machine utiliz ing the porous roller293, the valve 309 is opened and at the sametime the valve 3|| is opened by means of the operating member 3|2. As a result, the porous roller. 293 and the bearing 291 are vented so that the solvent liquid 300 will now by gravityfrom the supply tank 30! into the porous roller 293 up to a level at which the pipe 3|0 Instead of providing the guide member 14 connects withthe hearing mem -r191, tional solvent liquidwill not ilow into the per roller 293 because the vent will be closed ofi by the liquid, untilthe level of the liquid i's' agaln lowered, whereupon more solvent liquid will be supplied from the tank 30 I. I u

The tank 301 is provided as a drain tank to prevent the solventliquid from oozing out of the pores of the porous wall of the roller 293 when the machine is not in use. When operation of the machine 'is'sto'pped, the operating member 3|2 ie turned to close the valves 309 and 3| I. As avery small vent opening 3|3 is provided in thetanlz' 301, the solvent liquid 300 in the roller 293 will gradually drain ofi through the pipes 305 and so; into the tank 301, the pipe 305 being eg nected with the bottom portion of the bearing 291 and with the tank 301 near its bottom. K

In operation, the master 215 is clamped in position on the drum 25, this being accomplished raising the clamping member 210 by means of the lever 216, by operating the handle 211 and plac ing the one edge of the master 215 in position under the clamping member 210, andthen after said master is properly arranged on the drum, re leasing the clamping means by operation of the handle 211. The moistening mechanism then primedby operation of the lever 243 by means or the handle 25| thereon to cause the finger 249 to compress the bellows I19 upwardly, thuscaus ing solvent liquid to be supplied to the feed tube I59. The impression roller 240, which is out of engagement with the drum 25 when the machine has not been in operation for a considerable period of time, and the roller 203, which is out of engagement with the roller I00 or the roller 293, as the case may be, are then brought into engagement with the drum 25 and the roller I00, respectively, by moving the lever 224 by means of the handle 229 downwardly and the feed roller I22 is moved into engagement with the stack of sheets I24 mounted on the feed tray I23.

It will be noted that the spring 12 exerts a pull on the cable 10 and thus on the lengths 10' and 10" of said cable connecting the pulleys 18 and 19, exerting a force in a direction tending to move the pulley 19 toward the pulley 18. It will also be noted that when the shaft I09 is in its uppermost position in the slots I I8 this force will be acting along a line that is above the pivots us, while when the roller I22 is in paper reeding position as shown in Fig. 8 thisjforce will be acting along a line below the axis of the pivots I I9. Accordingly the spring 12 acts to yieldingly hold the feed roller I22 both in its retracted and in its paper engaging position.

The machine is now ready to commence 'diiplicating operation by rotation of thecran'k 39 means of the handle 3|. When Such rotation takes place, the cam 41 is rotated, as well as the drum 25. The leading edge Of the 'tnas'tlf is that which is held by the clamp 210 and 'the'carh "41 is so positioned on the shaft "44 that if we as sume the parts to be in the position shownin g. 10 the roller 58, upon reaching the point 51 en the cam 41, will commence to travel down descending portion of the low portion '49 of the in the position shown cam. When the parts are inFig. 10 the spring 12 will be tensioned and as a result the movement of the lev'er5'4 in aclockwise direction will cause the cable in to be hailed by means of the spring 12 so as tocause a clockwise rotation of the pulley 19, whichfwil1cause the pick up reed roller I22 to move the iiiiiieimbst' passing between said rollers,

15 sheet I24 rapidly to the right as shown in Fig. 2, the pads I33 preventing the sheets below the uppermost sheet I24 from moving with said uppermost sheet I24, and cause said sheet to be fed between the guides I46 and I48 and into the bight of the rollers I and 203.

The rollers I00 and 203 will at this time be stationary and no movement of said rollers commences until the roller I22 has ceased its rotation, as the over-running or one-way clutch device connecting the pulley '58 with the roller I00 will not grip until rotation thereof is reversed, inasmuch as the pulley 18 will at this time be rotating in a counter-clockwise direction. However, as soon as the roller 58 commences to travel up the ascending part of the low portion 40 of the cam, the lever 54 will be moved in a counterclockwise direction as viewed in Figs. 10 and 8 and will move from the position shown in Fig. 8 to that shown in Fig. 10. This will cause the pump to be actuated by means of the follower 66 traveling along the cam portion 65 to feed solvent liquid to the moistening roller I00 and the wiper pad II and at the same time the roller E00 will be rotated in a counter-clockwise direction as viewed in Fig. 2, which corresponds to clockwise rotation of the pulley I8 in Figs. 8 and 10, the oneway or over-running clutch device, connecting the pulley 18 with the shaft 8'. on which the roller I00 is mounted, gripping during such movement of the lever 54 to drive the roller It?) with the pulley I8.

The roller 203 will be frictionally driven by the roller I00 through the medium of the sheet I24 so spaced from the pivot 52 of the lever, and the cam 41 has such a rise that with the size of the pulley 18 provided, the surface speed of the roller I00 will be the same as that of the drum 25 and of the pressure roller 240. Thus the sheet will be fed to the drum 25 at the exact surface speed of the drum at the periphery thereof and there will be no buckling of the copy sheet as it engages with the master on the drum. The positioning of the cam is such that the copy sheet reaches a position between the pressure roller 240 and the surface of the drum when the leading edge of the master 215 also reaches this point. The high portion 40 of the cam 41 engages the roller 50 after the copy sheet passes from between the rollers I00, and engagement of the roller 58 with said high portion 40 continues through approximately half a turn of the drum 25, during which lever 54, pulleys I8 and T9 and rollers I22, I60 and 203 are stationary.

The same successive steps in the operation of the duplicating machine take place each time that the drum 25 is rotated by means of the crank 30 and the successive copy sheets on which a copy has been duplicated are deposited in the receiving tray 255, which will have been pulled out by the operator to a proper position to flatly receive the sheets between the portion thereof underlying the drum 25 and the stop flange 256 thereon.

When operation of the machine is to be halted for a long period, as over-night or for several hours, the lever 229 is actuated to release the rollers 240 and 203 from the drum 25 and the roller I00.

The operation of the machine utilizing the moistening apparatus shown in Figs. 13 and 14 is the same as above described, except that instead of utilizing a pump and a follower, such as the follower 06, to supply the solvent liquid, it

and the pin 59 is i6 is supplied by gravity, and instead of utilizing a priming lever, such as the lever 243, the valve 3I2 is provided and is opened before the duplicating operations are commenced in order to have the moistening roller 203 provided with the solvent liquid before such operation is commenced.

What I claim is:

1. In a duplicating machine having a drum, means for rotating said drum, and a sheet feeding and moistening roller, the combination of a cam rotating with said drum, means for moistening said roller including a pump supplying solvent fluid to said roller, said pump comprising a bellows forming part of the pump chamber, means for varying the capacity of said bellows to feed fluid to said roller, comprising a lever oscillated between two alternative positions by rotation of said cam, said pump being disposed adjacent said lever, and said lever having a cam surface thereon, an abutment with which said bellows engages, and means on said pump engaging said lever cam surface and connected with said bellows to compress said bellows between said means and said abutment, and priming means for priming said pump comprising a member mounted for engagement with said bellows to compress the same between said last mentioned member and the cam surface engaging means and additional means for moving said last mentioned member into compressing engagement with said bellows.

2. In a duplicating machine having a drum, means for rotating said drum, and a sheet feeding and moistening roller, the combination of a cam rotating with said drum, means for moistening said roller including a pump supplying solvent fluid to said roller, said pump comprising a bellows forming part of the pump chamber, means for varying the capacity of said bellows to feed fluid to said roller, comprising a lever oscillated between two alternative positions by rotation of said cam, said pump being disposed adiacent said lever, and said lever having a cam surface thereon, an abutment with which said bellows engages, and means on said pump engaging said lever cam surface and connected with said bellows to compress said bellows between said means and said abutment, and priming means for priming said pump comprising a member mounted for engagement with said bellows to compress the same between said last mentioned member and the cam surface engaging means and a second lever connected with said last mentioned member to move said last mentioned member into and out of compressing engagement with said bellows.

3. In a duplicating machine having a drum, means for rotating said drum, and a sheet feeding and moistening roller, the combination of a cam rotating with said drum, means for moistening said roller including a pump supplying solvent fluid to said roller, said pump comprising a body portion having a bellows at one end thereof forming part of the pump chamber, means for varying the capacity of said bellows to feed fluid to said roller, comprising a lever oscillated between two alternative positions by rotation of said cam, said lever having a cam surface thereon, an abutment with which said bellows engages, and a follower fixed on the body portion of said pump at the other end thereof engaging said lever cam surface, and priming means for priming said pump comprising a member mounted for engagement with said bellows to compress the same between said last mentioned member and said follower and a second lever connected with said last mentioned member to move said last mentioned 17 member into and out of compressing engagement with said bellows.

4. In a duplicating machine having a drum, and means for rotating said drum, the combination of a sheet feeding and moistening roller, means for moistening said roller with solvent liquid comprising a liquid feed tube mounted above said roller, a wiper pad cooperating with said roller, a combined copy sheet guide and wiper pad mounting member, and means for detachably mounting said combined guide and mounting member to swing toward said roller by the action of gravity, and means for intermittently rotating said roller upon rotation of said drum.

ROBERT WARREN QUIRK.

18 References Cited in the file of this patent UNITED STATES PATENTS Number Name Date Smith, Jr. Apr. 2, 1907 Steinbecker Jan. 27, 1914 Dick Feb. 10, 1914 Neidich Main-3, 1914 White Aug. 16, 1927 Weide May 17, 1932 Mantle June 27, 1933 Marchev Jan. 3, 1939 Benello June 13, 1939 Wimmer June 18, 1940 Morrison et a1 Nov. 5, 1940 Morrison et a1 Oct. 21, 1941 Marchev Dec. 2, 1941 Jagger Feb. 29, 1944 Peterson Sept. 10, 1946 Avery Apr. 12, 1949

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