US1823952A - Duplicating machine - Google Patents

Description

Sept. 22, 1931. R. PHIBBS 1,823,952

DUPLICATING MACHINE Original Filed June 27. 1950 3 Sheets-Sheet. 1

ATTORNEY Sept. 22, 1931. R. P. PHIBBS DUPLICATING MACHINE Original Filed June 27, 1930 s Sheets-Sheet. 2

Sept. 22, 1931. R. P, PHIB'BS 1,823,952

DUPLICA'PING MACHINE Original Filed June 27, 1930 s Sheets-Sheet s ATTORN EY Patented Sept. 22, 1931 err STATES RICHARD P; PHIBBS, OF SOUTH AMBOY', NEW JERSEY nurLrcA'r ne MACHINE,

Application filed June 27, 1930, Serial This invention relates to duplicating machines of the type wherein a gelatinous sheet is employed, and more particularly to 2 Also, the copying paper has a tendency to stick to the gelatinous sheet, and after the copy has been made, difliculty is experienced in removing the paper from the sheet.

It is an object of this invention to provide a duplicating machine in which means are provided for taking up the slack in'the gelatinous sheet, and preventing slipping thereof.

riage for making copies from the gelatinous sheet, which carriage isprovided with means for stripping the paperfrom the sheet.

A further object is the provision of a duplicating machine in which a gelatinousreproducing sheet is mounted so that ithas only line contact with the paper upon, which the copy is being made.

These and other advantageous objects, which will later appear, are accomplished by the simple and practical construction and arrangement of parts hereinafter described, and exhibited in the accompanying drawings, forming part hereof, and in which:

Figure 1 represents a plan view .of the machine.

Figure 2 represents a side elevation of the machine.

Figure 3 represents a sectional side elevation of the machine showing interior details, taken on line 3--3 of Figure 1.

Figure 4 represents an end view of the 50 machine. 7 t

A further object is the provision of a carno. 454,234. Renewed April 22, 1931.

Figure 5 represents a sectional view taken on line 55 of Figure 2, and l I Figure 6 represents a sectional view taken on line 6-6 of Figure 2.

Referring to the drawings, the machine is 5 shown to include a casing having side walls 7, the upper corners of each wall having attached thereto lugs 8 which support the parallel guide rods 9. The side walls 7 are braced at each end by transverse rods 10.

Encircling'the rods 9 are apertured ears 11, integral with the side members 12 of a carriage, the side members 12 being bracedby rods 13. and 15, the'rod 15 having pivotally 'mountedthereon the side members 1 1 05 r of a frame upon which is mounted a paper chute 16. r v Lateralprojections 17 from the side members 14 engage the earsll to limit the downward movement of the frame. The free 7 ends of the sidemembers 1 1 are braced by a rod 18 upon which is pivotally mounted a small frame having sides'19 and a cross. bar. 21, upon which is supported a handle i he sides '19 support a shaft 22 upon which is rotatably mountedv an impression roller 23, which cooperates with a similar roller 25 mounted on a shaft 24, thelatter being supported by the sidemembers 12.-

Supported by the side members 14, forwardly of the rollers, is a paper stripping knife 26, positioned so that its upper surface is tangent to the roller 25.

A gelatinous sheet 27 passes between the 85. rollers 23 and 25, and is wound on rollers 28 and 29, rotatably mounted respectively in the'bearings 31, 32 and 30. Bearings 30,

31 and 32 are provided with slots 33 and j 34:, through which pins 35 may pass to the center of the bearings, the pins 35 being integral with the fiat projections 35 on the rollers. As will be seen, the above construction renders the rollers interchangeable.

As will be seen from Figures 1, 4 and 5, the driving force is applied to roller 29, one of the projections 35 of which and'its accompanying pin 35 fit into the slot 36 and recess .37, respectively, of a friction clutch member 38, having a flange 39 for a purpose A crank arm 47 is attached to the shaft 43 by means ofa set screw 43. Obviously, when the crank arm 47 is moved in the proper direction, the gelatinoiis sheet 27 will be wound on roller 29 and unwound from roller 28. p r

A chain 49 is guided over the clutch meme ber 38 by the flange 39, the chain passing over a sprocket 73 fixed to the bearing 32-, which bearing is rotatably mounted on the wall 7. Pivotally mounted on the side. wall 7 .at

50 is a rocker havin the arms 55 and'56. D

A similar rocker with arms 52. and 53 is pivoted at 51. The'ends of arms 53 and 56 are'provided respectively with rollers 54 and 57, which engage the chain 49 to take up the slack therein and tighten its grip on the clutch member 38. The ends 'ofarms 55and 52 are connected by tension spring 58, which normally urge the rollers 54 and 57 to raised positions from the chain 49.

A flange. 59 engages thelsides of the arn s 55 and 52, the flange 59 being integral with an oval cam 60positioned between the arms to spread them apart, the cam being attached to a shaft 71, to which is fixed a crank 72,

the shaft 71 being journalled ina bearing mounted on the wall 7 o Fixed to shaft 71 is an arm 61, having pivotally connected thereto a link 62, provided with a slot 63, in which movesa pin 64-, the latter being fixed to an arm 65 which'is pivoted at 66 to the wall 7. The end of arm 65 is attached to one end of a tension spring 67, the other end of which is connected to an'arm 63, pivoted at 69 to the wall 7 the free endof arm 68 carr ing a flanged roller 70 which engages thechain 49. i V

In operation, when it is desired to present a fresh portion of the gelatinous sheet 27 the crank 72 is moved to place the cam 60 in the position shown in Figure 3 in which the rollers 57 and 54 are released from'engagement with the chain 49.

The sheet 27 may now be wound upon roller 29 by means of crank 47 and the friction clutch to present the fresh surface. The crank 72 is then rotated to cause the cam 60 to spread the arms 55 and 52, to cause the rollers 54 and 57 to grip the chain to take up the slack therein, and prevent movement of the roller 29 and resulting movement of the sheet 27.

As the crank 72 is rotated the arm 61 moves the link 62 to cause the lower portion of the slot 43 to engage the pin 64 and move the arm 65 upwardly against the action of spring 67, thus causing arm 68'to be pulled upwardly and the roller 70 to resiliently grip the chain to further prevent slack in the chain 49. The sheet 27 is now positively held in fixed position, and there will be no slipping thereof during the operation of the carriage. The roller 70 alsocompensates for change in tension of the sheet 27 as the carriage is moved back and forth.

The matter to be duplicated is then impressed on the fresh gelatinous surface with a reproducing ink, and a sheet ofrpaper S is inserted in the carriage so that its forward edge is between the rollers 23 and 25, and resting on knife 26. As the handle 20 is pulled to the right, see Figure 3, pressurefis applied to the rollers, paper and sheet 27, and movement of the carriage to the right will progressively present a fresh surface of the sheet 27 into contact with a fresh portion of the paper S, there always being line contact.

As the carriage moves to the right, Figure 3, the paper is fed upon the sheet 27, and immediately stripped therefrom by the stripping knife 26. When the extreme right of the machine has been reached, the handle is pressed to the left, which movement releases the pressure of the roller 23 on roller 25, at the same time moving the carriage back to the position for making another copy.

As will be seen, the side .members 14 are pivoted on the rod 15, so that the handle 20 and roller 23 may be moved to an out-of-theway position when desired to enable access conveniently to the gelatinous sheet 27.

lVhile the member 26 has been herein described as a knife, it is obvious thatother stripping means, such as wire, etc., may be used.

The foregoing disclosure is to be regarded as descriptive and illustrative only, and not as restrictive or limitative of the invention of which obviously an embodiment may be constructed including many modifications without departing from the general scope herein indicated and denoted in the appended claims.

Having thus described my invention, what I claim as new and desire ters Patent, is:

1. In a duplicating machine, a gelatinous sheet, rollers at the ends of the machine over which the sheet may be wound, a horizontally slidable carriage, and a roller on to secure by Leti the carriage over which the sheet passes, said sheet being always at an angle to the horizontal.

2. In a duplicating machine, a gelatinous sheet mounted so that it is always at an angle to the horizontal, a horizontally slidable carriagn, a roller on the carriage over which the sheet passes, a frame pivoted .to

the carriage, and a roller carried by the frame, said rollers being positioned to cooperate to apply pressure to the sheet.

3. In a duplicating machine, a gelatinous sheet, a slidably mounted carriage, a lower roller on the cariage over which the sheet passes, a paper guide chute pivotally mount ed on the carriage, a frame pivoted on the guide chute, an upper roller carried by the frame and positioned immediately above the lower roller, and a paper stripping knife fixed to the guide chute sothat its upper edge is tangent to the lower roller.

4. In a duplicating machine, a gelatinous sheet, a slidably mounted carriage, a lower roller on the carriage over which the sheet passes, a paper guide chute pivotally mounted on the carriage, a frame pivoted on the guide chute, and an upper roller carried by the frame and positioned immediately above the lower roller. v

5. In a duplicating machine, a gelatinous sheet mounted so that it is always at an angle to the horizontal, a horizontally slidable carriage, a roller on the carriage over which the sheet passes, a frame pivoted to the carriage, a roller carried by the frame, said rollers being positioned to cooperate to apply pressure to the sheet, and a paper stripping knife mounted on the carriage so that its upper edge is tangent to the first mentioned roller.

' 6. In a duplicating machine, .a gelatinous sheet, a slidably mounted carriage, a lower roller mounted on the carriage over which the sheet passes, a frame pivoted on the carriage, and an upper roller carried by the frame.

7 In a duplicating machine, a gelatinou sheet mounted so that it is always at an angle to the horizontal, a horizontally slidable carriage, a roller on the carriage over which the sheet passes, a frame pivoted to the carriage, a roller carried by the frame, said rollers being positioned to cooperate to apply pressure to the sheet-, and a paper stripping means mounted on the carriage adjacent the rollers so that its upper edge is tangent to the first mentioned roller.

8. In a duplicating machine, a gelatinous sheet, means for supporting the ends of the sheet, a slidable carriage, and a roller on the carriage over which the sheet passes,

said sheetbeing always at an angle to the line of travel of the carriage.

9. In a duplicatingmachine, a gelatinous mounted carriage, a frame pivoted on the carriage, a roller carried by the frame and engageable with the gelatinous sheet, and a paper stripping knife mounted on the carriage and having its edge adjacent the gelatinous sheet. p

10. In a duplicating machine, a gelatinous sheet, a support for the sheet, a slidably mounted carriage, a frame pivoted on the carriage, a roller carried by the frame and engageable with the gelatinous sheet, and paper stripping means mounted on the carriage adjacent the gelatinous'sheet.

11. In a duplicating machine, a gelatinous sheet, a slidaoly mounted carriage, and a paper stripping knife mounted on the carriage and having its edge adjacent the gelatinous sheet. 7 o I 12. In a duplicating machine, a gelatinous sheet, a slidably mounted carriage, and paper stripping means mounted on the carriage adjacent the sheet. V

This specification signed this 26th day of June, 1930.

sheet, a support for the sheet, a slidably RICHARD P. PHIBBS.

Images