US2015762A - Combined preparing frame and printing device - Google Patents

Description

Oct. 1, 1935. s. QulsLlNG 2,015,762

COMBINED PREPARING FRAME AND PRINTINGDEVIGE Fileqocp. 17, 193s Patented Oct. 1, 1935 UNITED STATES PATENT "OFFICE COMBINED PREPARING FRAME AND PRINTING DEVICE 3 Claims.

This invention relates to improvements in apparatus used .in making prints of negatives of flexible material.

The practice today in some forms of engraving is to place a heavy piece of transp-arent material .such as celluloid or the like upon a picture that is to be copied and then place the two in a frame similar to a picture frame. With the use of an engraving too1 the lines of the picture are then engraved or scratched upon the transparent material and upon completion of the picture, ink is wiped over this scratched surface and the plate wiped clean. After removing the Celluloid from the frame, a sheet of, blank paper is placed upon the inked side ofthe celluloid and the two are then run between a pair of rollers operated by means of a crank and gearing, and the picture is reproduced in ink upon the paper.

This apparatus is cumbersome, heavy and expensive and it is always necessary to have the several parts at hand in order to make engravings.

The object of this invention is to provide alight unitary structure very inexpensive to manufacture and capable of performing this whole series of operations necessary to produce a completed engraving and prints.

A further object is to provide a device which will materially speed up the production of a completed engraving and prints.

Although a preferred embodiment of the invention is herein shown and described, it is understood that changes may be made within the scope of what is claimed.

In the drawing:

Figure 1 is a plan view of a device constructed in accordance with the invention;

Figure 2 is ia longitudinal sectional view taken on the line 2-2 of Figure 1, a picture, a sheet of transparent material, and a sheet of paper being shown in place upon the table;

Figure 3 is a transverse sectional view taken on the line 3--3 of Figure 1 and,

Figure 4 shows a modied form of the invention containing means for adjusting the pressure of the roller upon the material upon the table.

In the present embodiment of the invention a supporting platform I of sheet metal provides a table upon which the drawing materials are placed. This table or support I is formed of a single piece of sheet metal bent at right yangles near each side to form two side flanges 2 and 3. The side flanges are stamped out leaving openings 4 for guiding the pressure roller 5. As the roller extends beyond the flanges, the ange above the opening 4 limits the upward movement of the roller. The side of the openings 4 adjacent to the table are formed with teeth 6 adapted to coact with holes 1 circumferentially spaced about the roller 5 near each end thereof. The teeth 6 are 5 spaced from one end of the opening 4to more readily facilitate the assembly of the roller 5 with the table I. Spot welded or otherwise secured to one end of the roller is a handle 8 by means of which the roller may be rotated, causing engagel0 ment with the teeth 6 and moving the roller down the face of the table.

In Figure 2 is shown in section a picture 9, a sheet of celluloid or other transparent material IB, and a sheet of blank paper II. When these l5 drawing materials have been placed upon the table, the roller may be moved down over their upper edge securely holding them in place while the picture is being engraved or traced. Upon completion of the picture the engraved surface of the 20 transparent material is inked and wiped and a blank sheet of paper, shown at II in Figure 2, is placed upon this inked surface. By turning the crank 8 the roller will be moved down the full length of the paper, thereby impressing an inked 25 facsimile of the picture etching upon the paper. This operation may be repeated until the desired number of prints have been made.

If it is found that the roller has insuicient pressure to make a good print, added material 30 such as felt or the like may be placed under the engraved plate.

.In the modied form of the invention shown in Figure 4, means have been employed whereby the pressure of the roller 5 may be varied at the option of the operator. In this form, comparatively low side anges I2 are used, having teeth I3 formed upon their upper edges. At each end of the table I, adjacent the side flanges, are blocks 0 I4 supporting threaded bolts I5. Light coiled springs I6 are placed about the bolts I5 and yieldably support bars I1 slidably mounted upon the bolts I5. Adjustable nuts I8 limit the upward movement of the bar and thereby determine the 45 pressure to be exerted by the roller. 1

Having thus described the invention what I claim isz- 1. In a printing press apparatus, a table for supporting material during engraving or prepar- 50 ing the negative, said table having slotted, upturnedl anges at two opposite sides, with teeth so arranged in said slots as to engage a perforated roller, which roller is provided with a handle for revolving same so that it may be thus moved 55 across the length of said table to compress material placed thereon.

2. In an apparatus for preparing negatives andprinting same on positives, a table for supporting material during preparatory and printing process, a rller perforated at itsextremities to engage in teeth of slotted flanges turned `up on opposite sides of said tablefand means for rotating said roller to cause it to pass over said table.

3. In a negative preparatory and positive imprint transferring device, a support for material to be prepared and printed, a roller extending across said support, teeth carried in slotted flanges on opposite sides of said support to co-act with perforations in said roller, 'and means for rotating said roller so-it may pass under pressure over the face of said support.

SVERRE QUISLING.

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