US2175667A

US2175667A - Paper-handling mechanism for duplicating machines

Info

Publication number: US2175667A
Application number: US202398A
Authority: US
Inventors: Marchev Alfred; Robert F Morrison
Original assignee: Ditto Inc
Current assignee: Ditto Inc
Priority date: 1938-04-16
Filing date: 1938-04-16
Publication date: 1939-10-10
Anticipated expiration: 1956-10-10

Description

0d. 10, 1939- A. MARCHEV Er AL PAPER-HANDLING IECAHISI FOR DUPLICATING MACHINES Filed April 16, 1938 5 Sheets-Sheet 1 ssss@ J N Ami.,

0a. 1o, 1939. A, MARCHEV Em 2,175,667

PAPER-HANDLING IECHANISI FOR DUPLIGATING IACHINES Filed April 16, 193s, 5 snee'ts-sheet 2 Oct. 10, 1939. A MARCHEV E11 AL 2,175,667

PAPER-HANDLING IECHAHISI FOB DUPLIGA'X'ING IACHINES Filed April 1e, 193s s fsneets-sheet :s

FISE.

oct. 1o, 1939. ,1 MARcHEv UAL 2,115,667

HECHANISI FOR DUPLICATING IAGHINES PAPER-HANDLING Filed April 16, 1938 5 Sheets-Sheet 4 Oct. 10, 1939. A. MARCHEV Er AL PAPER-HANDLING IIECHANISI FOR DUPLIGATING MACHINES File April 16. 193e 5 Sheets-Sheet 5 Patented oci. 1o, 1939 STATES PATENT OFFICE PAPER-HANDLNG MECHANISM FOR DUPLI-` CATING MACHINES Application April 15, 1938, Serial No. 202,398

I Claims.

The invention relates to paper handling mechanism for duplicating machines and is particularly adapted to be embodied in duplicating machines wherein copy sheets are pressed against l data carried by a rotatable duplicating drum, the copy sheets being advanced one by one to the duplicating drum and'after being brought into contact with the data thereon are then discharged onto a table or tray.

10 A duplicating machine embodying one form of the invention is of the .type wherein a master sheet carrying the data to be duplicated, is mounted upon the duplicating drum and each copy sheet is moistened with a solvent before it u is advanced to the duplicating drum for theduplicating 'operatiom The 'machine comprises vconveyor mechanism for receiving and advancing the copy sheets after they have been brought into contact with thev master sheet, the construc- I tion being such that each copy sheet is discharged from the machine onto a tray in such manner that the data duplicated on each copy sheet is visible to the operator as it passes to the receiving tray. Each copy sheet is also accessible to I the operator so that the operator may return it to copy sheet mechanism for advancing it through the machine a second time. Thus, in some instances. it is desirable to obtain a predetermined number of copies of a master sheet upon suitable I copy sheets and then pass one or more of the copy sheets through the machine a second time so'that the data will be duplicated on both sides thereof,

Other objects and advantages will become aps parent as the following detailed description progresses, reference being had-to thev accompanyving drawings.' whereln K Fig. l is a vertical longitudinal section taken through a duplicating machine which embodies 40 theinvention.

'Fig' 2 is a plan view of the improved duplieating machine.

Fig. 3 is-an end elevation oi' the improved duplieating machine. d6 Fig. 4 is aside elevation" of certain conveyor mechanism which forms part of the improved duplicating machine.

Fig. 5 is a section taken on line 5-5 of Fig. 4. Fig. 6 is a view looking at the other side of l0 the conveyor mechanism.

Fig. 'l is a. side elevation of a conveyor mechanism whichl embodies another form of the invention and may be employed in place of the conveyor mechanism shown in Figs. 1 to 6, in- Il elusive.

Fig. 8 is a fragmentary back view of the conveyor mechanism shown in Fig. 7.

Fig. 9 is a fragmentary section taken on the line 9 9 of Fig. 8, and

Fig. 10 is a fragmentary section taken on the 5 same line as Fig. 9 but showing certain parts of the mechanism in changed positions.

Referring for the present to Figs. 1, 2 and 3, reference characters I0 and II designate side frames which form parts of the frame of a dupli- 10 cating machine which embodies a preferred form of the invention, the frame being designated generally by the reference character I2.

Rotatably mounted in the frame I2, between the side frames Ill and Il, is a duplicating drum l! i3 comprising a cylindrical wall I5 and end walls I6. Mounted in the end walls Ii and extending through the duplicating drum I3 is a shaft I8 which carries a plurality of clamping members i9 adapted to clamp the leading end of a master n sheet 20 against a. shoulder 2i formed by a slot 22 provided in the cylindrical wall i5.

The master sheet 20 carries the data to be duplicated, the data being printed, written or typewritten thereon in reverse with ink or carn bon.

Cooperating with the duplicating drum I 3 is a platen or pressure roller 2l rotatably mounted by a shaft 25. When the machine is in operation, copy sheets are advanced to the bight be- 80 tween the 'duplicating drum I3 and the platen roller 24 and the platen roller 2l presses the copy sheets against the master sheet 20 so that the data on the master sheet will be duplicated on each copy sheet. v $5 Combined feeding and moistening rollers are provided for advancing the copy sheets to the blght between the duplicating drum I3 and the platen roller 24. The combined moistening and feeding rollers are designated by the reference n characters 21 and 28. The roller 21 is supplied with solvent by means comprising a perforated tube 28 which sprays the solvent upon the roller 21. A Wick 3U engages the roller 21 and aids in distributing the solvent upon the roller 21. Of course the solvent is one which will dissolve the inkY or carbon with which the data is formed upon the master sheet 20.

Mounted upon the frame I2 is a tray or table 32 upon which a stack of copy sheets may be 50` placed and may be advanced manually one by one to the blght of the rollers 21 and 28. It may be mentioned that the roller 21 is driven in unison with the duplicating drum` I3 when the duplicating drum is rotated. Obviously when the rollers l* 21 and 28 feed a sheet between them to the bight of the duplicating drum I3 and the platen roller 24, the upper side of the copy sheet will be moistened with the solvent and the moistened surface will be put into contact with the data on the master sheet so that a portion of the ink or carbon thereon will be dissolved and adhere to thn copy sheet.

The improved machine is driven by an electric motor (not shown). The motor drives a sheave 40 by means comprising a belt 4|. The sheave 40 is mounted in the frame |2. Constrained to rotate with the sheave 40 is a smaller sheave 43 which is connected operatively to a third sheave 44 by a belt 15. The sheave 44 is rotatably mounted in the frame I2 and has a pinion 46 constrained to rotate with it. The pinion 46 meshes with a gear 41 with which the duplicating drum is connected operatively at the beginning of each cycle of operation so that it will make a complete revolution and then come to a stop. 'I'he means for connecting the duplicating drum to the gear 41 at the beginning of each cycle of operation does not form a part of the present invention and therefore will -not be described. It is sufficient to state that the duplicating drum I3, the platen roller 24 and the combined feeding and moistening rollers 21 and 23 come to a stop at the end of each cycle of operation and that a copy sheet is advanced to the rollers 21 and 26 before the next cycle of operation begins.

As the copy sheets are discharged from the bight of the duplicating drum I3 and the platen roller 24, they pass intoa conveyor mechanism which is designated generally by the reference character 50. The conveyor mechanism 50 discharges the copy sheets into a tray `5| which is secured to the frame I2.

The conveyor mechanism is preferably inthe form of a unit which is detachably secured in the frame I2. The conveyor mechanism 50 has Va frame which comprises

side frame members

53 and 54 which are secured to each other by means including a plurality of

plates

55, 56, 51, 56 and 59 extending between

Vthe side frames

53 and 54. These plates also serve as means for guiding the copy sheets to the tray 5| as will be explained hereinafter more fully. At their lower forward ends, the

side frames

53 and 54 are provided with notches 60 which are engageable by pins 6I projecting from the inner surfaces of the side frames I and I I. At their upper ends the

side frames

53 and 54 are provided with brackets 62a having holes 62 which are engageable by pins 63 slidably and rotatably journaled in the side frames I0 and |I, the pins 63 being provided with knobs 66 at their outer ends whereby they may be manipulated. Each of the pins 63 has a smaller pin 61 .extending transversely through it, the pins 61 being adapted to rest in notches 66 provided in collars 69 mounted upon the outer surfaces of the side frames I0 and II. Springs (not shown) disposed in the side frames I0 and II yieldingly urge the pins 63 in directions to hold the pins 61 in the notches 69. When it is desired to release the conveyor mechanism 50 to remove it from the duplicating machine, the operator pulls outwardly upon the knobs 56 and turns the knobs through 90 and permits the pins 61 to come to rest upon the outer end' surfaces of the collars 59. The pins 03 are then withdrawn from the holes 62. A pair oi Z-shaped straps 10 fixed to the plate 51 are adapted to be positioned between a wall 12 and a pair of slides 13, the wall 12 being part of the frame I2 (Fig. 1). The slides 13 have lugs 15 whereby they may be manipulated by the operator. Pins 11 project through slots 13 provided in the slides 13 so that the slides are slidably mounted on the wall 12. As best illus- .trated in Fig. 3, the slides clamp the straps 10 to the wall 12 when they are in the positions wherein they are illustrated in Fig. 3 a'nd it will be readily understood that they may vbe 'displaced toward each other to disengage them from the straps. Then if the pins 63 are disengaged from the holes 62 the conveyor frame may be lifted bodily from the duplicating machine.

Rotatably Journaled on a stud 80 projecting from the side frame 54 is a pinion 8| which has a pinion 92 constrained to rotate with it. The pinion 52 meshes with

pinions

83 and 84 fixed to shafts 65 and 66, respectively. The pinion 8| normally meshes with the pinion 46 and therefore is driven whenever the machine is in operation. Adjacent the outer surface of the side frame 53 a pulley 65 is fixed to the shaft 85 and is operatively connected to

pulleys

89 and 90 by a belt 9|. The pulleys 59 and 90 are fixed to

shafts

93 and 94, respectively. It will be readily understood that when the pinion 8| is rotated, the

shafts

86, 85, 93 and 94 will rotate in unison with the pinion gli. All the shafts will rotate in the same direc- Mounted upon and constrained to rotate with the shaft 94 between the side frames 53 and 54 are a plurality of rollers |00 which are engageable by a plurality of knurled rollers I0| fixed to a shaft |02 which has its ends journaled in the free ends of levers |04 pivoted upon the side frames 53 and 54 by pins |05. A spring |06 which has one of its ends secured to one of the levers |04 and has the other of its ends secured to the side frame 54 yieldingly urges the levers |04 in a counter-clockwise direction (Fig. 6) to urge the rollers IOI against the rollers |00.

Fixed to the shaft 93 intermediate the side frames 53 and 54 are a plurality of rollers I|0 which are engageable by knurled rollers I fixed to a shaft II2 which has its ends rotatably journaled in the free ends of levers I I3, the levers I I3 being pivoted on the side frames 53 and 54 by pins |I4. Springs yieldingly urge the levers in a counter-clockwise direction (Fig. 6) to hold the knurled rollers III in engagement with the rollers II 0.

' to hold the rollers |2I in engagement with the rollers I 20. I

Fixed to the shaft 56 intermediate the side frames 53 and 54 are a plurality of rollers |30 which are engageable by knurled rollers I3I xed to a shaft I 32 which has its ends rotatably journaled in the free ends of levers |33, the levers |33 being pivoted by pins |34 to the side frames 53 and 54. Springs |35 yieldingly urge the levers |33 in a clockwise direction (Fig. 4) to hold the rollers I3I in contact with the rollers |30.

It will be noted that the knurled rollers IOI are disposed beneath a sheet metal housing member |40 fixed to the plate 59.

'I'he rollersl |00, IIO, |20 and |30 are preferably formed from resilient material such as rub- `Iii Icharged from the rollers itt and mi.

ber, the knurled rollers lill, til, B2i, and lili being preferably formed from metal. q

When the improved machine is in operation, the drum it rotates in a countencloclwise di rection (Fig. l) and the platen roller 2d rotates in a clockwise direction (Fig. l). The driven rollers iit, ill, lill and iii@ are driven in a clock.- wise direction (Fig. l) they, oi' course, drive the lrnurled rollers.

Obviously, when the copy sheets pass from between the drum iii and the platen roller they are guided by the plate lib to the rollers and lei which advance them over the plate to the rollers i2@ and The rollers it@ and ii then advance them to the rollers il@ and iii and the copy sheets are advanced by these rollers to the rollers and itil which discharge the copy sheets upon the tray El. ri'he plate 5l guides the copy sheets from. the rollers it and lili to the rollers lili and iii and the plates 5E and 5@ guide the copy sheets from the rollers il@ and iii to the rollers iilil and lili.

It will be readily understood that although the copy sheets pass beneath the .drum lil dur-- ing the duplicating operation, the conveyor mechanism 5U brings the copy sheets to a point near the top of the drum beoretney are discharged upon the tray 5l. The tray El is in such a po" sition that the operator may view the copy sheets as they are deposited thereon. Also, the operator may view the sheets as they are being dis- I the operator notes that the copy sheets are not satisfactory, themachine may be stopped and ad justed as desired.

Referring now to Figs. 'l to 1G, inclusive, Wherein conveyor mechanism 50a is shown, which conveyor mechanism embodies another form of the invention, it will be noted thatparts of the conveyor mechanism 50a are identical in 'construction with parts of the conveyor mechanism The only diierence between the two structures is at the upper ends of these mechanisms. The parts of the conveyor mechanism bild that are substantially identical with parts of the conveyor mechanism 5b are identified by the same numerals with the letter a added thereto. It will be noted that the uppermost knurled rollers wie which correspond to the rollers lili are iixed to a shaft lUZa that has its ends rotatably journaled in brackets liiil fixed to the inner side oi' a housing-like member B5B provided with downwardly extending flanges i52 at its ends. Pins E53 pivot the flanges iil to the upper ends of bars l55 which are secured to the sid'e frames 5&0; and '53a by screws ME. A guide plate i517 is xed to the under surface of the housing meme ber ibi and is adapted to guide the copy sheets to the bight of the knurled rollers lilla and the cooperating rollers tilde when the apparatus is in the position wherein it is shown in Fig'. 9. However; if it is so desired, the housing member li may be swung from the position wherein it is shown in Fig. 9 to the position wherein it is shown in Fig. ,10 so that the guide plate l5'l and the knurled rollers lilla occupy the 'positions wherein they are shown in Fig. 10 so that access may be had to the rollers lilla to clean them. Also, if it is so desired, the apparatus` maybe adjusted as shown in Fig. 10 to permit the copy sheets to pass directly upward from the conveyor into the hands of the operator.

While the preferred embodiment of the invention has been shown and described, it is to be understood that it is capable of many modifications. Changes, therefore, in the construction and arrangement may be rnade without departing from the spirit and scope of the invention as disclosed in the appended claims in which it is the intention to claim all novelty inherent i in the invention as broadly as possible in View of the prior art.

Having thus described the invention, what we claim as new and desire to secure by Letters Patent is:

l. In a paper handling mechanism for a duplicating machine having a drum at the lower portion of which printed copy sheets are released, the combination of a plurality of pairs of rollers to which said copy sheets are delivered successively for moving the sheets upwardly about the delivery side of the drum, guide plates between successive pairs or" rollers for deflecting the sheets inwardly toward the drum slightly from each pair of rollers and into the bite of the next pair, a tray positioned opposite to the upper portion of the drum into which said sheets are fed by the last pair of rollers, and means for driving said rollers.

2. in apaper handling mechanism for a dupli eating machine having a drum at the lower portion of which printed copy sheets are released, the' -of rollers to which said copy sheets are delivered successively for moving the sheets upwardly about the delivery side of the drum, said guide plates being interposed between successive pairs of rollers so as to direct the sheets from one pair to the i next about the face of the drum, a tray positioned opposite to .the upper portion of the drum into which said sheets are fed by the last pair of rollers into position to be visible to the operator as they are piled in the tray, and means for driving said rollers.

3. In a paper handling mechanism for a dupli cating machine having a drum at the lower portion of which printed copy sheets are released, the combination of a frame comprising edgewise bowed frame plates connected together by a series of spaced guide plates so as to be held rigidly in position with respect to each other, a series or" pairs of rollers to which said copy sheets are deliv ered successively for moving the sheets upwardly about the delivery side of the drum, said guide plates being interposed between successive pairs of rollers so as to direct the sheets from one pair to the 'next about the face of the drum, a tray positioned opposite to the upper portion of the drum into which said sheets 'are fed by the last pair of rollers into position to be visible to the operator as they are piled in the tray, tongue and groove connecting means for holding the lower end portion of said frame releasably in position on the machine, brackets extending from an intenmediate portion of said frame, means for securing said brackets releasably in position on the machine for holding the frame removably in position, and means for driving said rollers.

4. In a paper handling mechanism for a duplicating machine having a drum at the lower portion of which printed copy sheets are released, the combination of a frame comprising edgewise bowed frame plates connected together by a series of spaced guide plates so as to be held rigidly in position with respect to each other, a series of pairs of rollersto which said copy sheets are delivered successively for moving the sheets upwardly about the delivery side of the drum, said guide Cir plates being interposed between successive pairs of rollers so as to direct the sheets from one pair to the next about the face of the drum, a tray positioned opposite to the upper portion of the drum into which said sheets are fed by the Vlast pair of rollers into position to be visible to the operator as they are piled in the tray, tongue and groove connecting means fox holding the lower end portion of said frame releasably in position on the machine, brackets extending from an intermediate portion of said frame,` slide bars on the machine adapted in operative position to engage said brackets for holding them releasably in position so as to maintain the frame removably in operative position, and means ior driving said rollers.

5. In a paper handling mechanism for a duplieating machine having -a drum at the lower portion of which printed copy vSheets are released, the combination of a plurality'of pairs oi' rollers to which said copy sheets aredelivered successively for moving the sheets upwardly about the delivery side o! the drum, guide plates between successive pairs of rollers for directing the sheets from each pair of rollers into the bite of the next pair, a tray positioned opposite to the upper portion of the drum, movably mounted guide means in connection with the uppermost pair of rollers adapted in operative position to direct the copy sheets into said tray and adapted in changed 'position' to permit the sheets to move upwardly into position to be grasped by the operator, and means for driving said rollers.

6. In a paper handling mechanism for a dup1i eating. machine having a drum at the lower portion of which printed copy sheets are released, the combination of a plurality of pairs of rollers to which said copy sheets are delivered successively for moving the sheets upwardly about the delivery side of the drum, guide plates between successive pairs of rollers for directing the sheets from each pair of rollers into the bite of the next pair, one of the rollers of the last pair of rollers being movably mounted so as to be capable of being moved out of operative position with respect to the other roller of the same pair, a tray positioned opposite to said last pair of rollers, a guide plate mounted so as to move with said movable roller adapted when the plate and roller are in normal position to direct copy -sheets into said tray and adapted when moved out of operative position to permit the sheets to move upwardly into position to be grasped by the operator, and means for rotating said rollers.

7. In a paper handling mechanism for a duplicating machine having a drum at the lower portion of which printed copy sheets' are released, the combination of a plurality of pairs of rollers to whichsaid copy sheets are delivered successively for moving the sheets upwardly about the delivery side of the drum', Yguide plates between successive pairs of rollers for directing the sheets from each pair of rollers into the bite of the next pair, a guide plate pivotally mounted so as to swing about one edge oi' the plate adjacent to the topmost pair oi rollers. the upper roller of said uppermost pair being rotatably mounted upon said guide plate, a tray positionedopposite to said uppermost pair of rollers, the arrangement being such that when the guide plate and roller are in operative position copy sheets are directed by said guide plate into' the tray and that when the guide plate and roller are moved out o! operative position the copy sheets are moved upwardly into position to be .grasped by the operator, and means for rotating said rollers.

ALFRED MARCHEV. ROBERT F. MORRISON.