US1729749A - Duplicating machine - Google Patents

Description

Oct. 1, 1929. SAXE 1,729,749

DUPLICATING MACHINE Filed May 19, 1927 0 IN VEN T am /9 A; BY 772 M 56. 5. ATTORNEYS.

Patented Get. 1, 1929 UNITED STATES HOWARD ATWELLI SAXE, OF ERIE, PENNSYLVANIA.

DUPLICATING MACHINE Application filed May 19,

Duplicating machines using composition surfaces are usually enclosed in surrounding frames and it is desirable to adjust this surface to the frame. The present invention is designed to accomplish this in a simple and registering the paper. is directed to this feature.

eflicient manner. It is also common to provide such devices with means for separating the paper from the surface and devices for The present invention Features and details of the invention will appear from the specification and claims.

A preferable exemplification of the invention is illustrated in the accompanying drawings as follows 2- Fig. 1 is a perspective view of the device.

Fig. 2 a section on the line 2-2 in Fig. 1.

Fig. 3 a section on the line 33 in Fig. 1.

Fig. 4 an end view of the device.

Fig. 4 a section on the line 4 4 in Fig. 4.

Fig. 5 a section on the line 55 in Fig. 4.

Fig. 6 a section on the line 6-6 in Fig. 1.

1 marks a box, preferably, of metal, on which a cover 2 is hinged. Within the metal box there is a surrounding frame made up of wood strips 3 and 4 and within these are angle plates 5 and 6, the inner flange of the angle plates forming the side surfaces of the composition recess.

A composition 8 for receiving the ink im pressions is mounted on a plate 7 preferably of metal. A series of wedge blocks 9 are. arranged across the under-side of the plate 7 These wedge blocks at the rear of the machine are preferably reversed from those at the front of the machine for a reason hereinafter stated. Opposing Wedge blocks 10 are arranged in the bottom of the frame, these wedge blocks being provided with nuts 11. A screw-threaded rod 12 extends lengthwise of the frame, one end being provided with a right-hand screw and the other end with a left-hand screw operating in the nuts 11, thus forcing a part of the wedge blocks 10 in one direction and the other part in the opposite direction to adjust the elevation of the composition surface. A nurled handle 13 is arranged orrthe end of the screw rod so that this may be readily adjusted.

It will be noted that with this the composi within said plate.

1927. Serial No. 192,535.

tion surface may be kept flush with the top of the frame and if it wears more rapidly at one end, or the other, the plate may be reversed so as to maintain the level of the composition throughout its length.

The plate 7 has extensions 14 at each end and these are engagedby springs 15 which are arranged under the end angle plates 5 and these hold the plate in its lower position and in engagementwith the wedge blocks.

A registering means is mounted over the composition. It comprises a supporting plate 16. This has ears 17 which rest on the side angle plates 6 and downwardly extending ears 17 which extend downwardly just The frictional engagementof the ears 17 a with the plate 6 is sufficient to hold the plate 16 in place. The ears 19 extend upwardly from the plate 16. A carrying member 18 is pivotally mounted between ears 19 by pins 19*. It has registering stops 20 which are carried by the plate 18. The plate 18 has slots 20 Screws 20 extend through the stops 20 and the slots 20 into nuts 20. locked in adjustment by screws 20. Springs 21 are arranged within the carrying member 18 and have forwardly extending fingers 22. A separating strip 23 is mounted between the fingers 22 and is'kept under strain by the tension of these fingers.

The separating strip 23 normally rests on top of the composition surface. A sheet of paper A is laid between the stops 20, over the separating strip 28. After the impression is taken in the usual manner by the passing of a roller over the paper the end of the paper is separated so that it may be readily grasped by tipping the carrying member 18, thus lifting the separating strip 23 and with it the paper.

What I claim as new is:

1. In a duplicating machine, the combination of a frame; a composition surface plate; and means adjusting the level of the plate comprising opposing wedges engaging the plate, and a screw moving them simultaneously relatively to each other and to the plate.

2. In a duplicating machine, the combination of a frame; a metal backing plate hav- The stops may be adjusted and ing a composition surface formed thereon; means adjusting the level of the plate; and a paper separating device over the composition surface plate comprising a separating strip resting on the composition surface and a pivotal mounting for the separating strip.

3. In a duplicating machine, the combination of a frame; a metal backing plate having a composition surface formed thereon; means adjusting the, level of the plate; and a paper separating device over the composition surface plate comprising a separating strip, tension means holding said strip under tension, and a pivotal mounting for said means.

4-. In a duplicating machine, the combination of a frame; a metal backing plate having a composition surface formed thereon; means adjusting the level of the plate; and a registering and separating device over the composition surface plate, said device comprising a separating strip resting on the composition surface and a pivotal mounting carrying the registering and separating devices.

5. In a duplicating machine, the combination of a frame; a metal back having a composition surface formed thereon; a paper separating device, comprising a separating strip; and means holding said strip under tension.

6. In a duplicating machine, the combination of a frame; a plate having a composition surface thereon; and a paper separating de-- vice at one end of the plate, said plate being reversable relatively to the separating device.

7. In a duplicating machine, the combination of a frame; a composition surface plate; opposed Wedging surfaces directly facing each other on said plate; and opposed Wedges carried by the frame operating on said surfaces, said Wedges moving relatively to each other and in a path of alignment.

8. In a duplicating machine, the combination of a' frame; ac'omposition surface plate; opposed Wedging surfaces directly facing: each other on said plate; and opposed Wedges carried by the frame operating on said surfaces, said Wedges moving relatively to each other and in a path in alignment, said plate being reversible end for end on the- Wedges.

In testimony whereof I have hereunto set my hand.

HOWARD AT /VELL SAXE';

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