US762763A - Apparatus for printing photographic paper and films. - Google Patents

Description

No. 762,763. PATENTED JUNE 14, 1904. A. W. S. SANDERSON & G. B. BRADSHAW. APPARATUS FOR PRINTING PHOTOGRAPHIO PAPER AND FILMS.

APPLICATION FILED NOV. 3, 1902.

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No. 762,763- PATBNTBD JUNE 14, 1904.

- A. W. s. SANDERSON & G. B. BRADSHAW.

APPARATUS FOR PRINTING PHOTOGRAPHIG PAPER AND FILMS.

APPLIOATION FILED NOV. 3, 1902.

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APPLIOATION FILED NOV. 3, 1902. N0 MODEL. 3 SHEETSSHEBT 3.

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UNITED STATES Patented June 14, 1904..

PATENT OFFICE.

ALFRED S. SANDERSON AND GEORGE B. BRADSHAIV, OF ALTRINCHAM, ENGLAND.

APPARATUS FOR PRINTING PHOTOGRAPHIC PAPER AND FILMS.

SPECIFICATION forming part of Letters Patent No. 762,763, dated June 14, 1904.

Application filed ove ber 3, 1902. Serial No. 129,995. (No model.)

To all xvi 1,0711, it may concern:

Be it known that we, ALFRED TILLIAM STAINTON SANDERSON and GEORGE BAGNALL BRADSHAW, British subjects, and residents of Altrincham, in the county of Chester, England, have invented certain new and useful Improvements in Apparatus for Printing Photographic Paper and Films, of which the following is a specification.

The object of this invention is to provide an improved apparatus for printing photographs, but which is at the same time capable of other uses.

Our invention is designed to provide for the printing of a number of photographic pictures upon a continuous roll of paper.

It consists, essentially, in constructing the printing-frame with an inclosed receptacle at both ends fitted with rollers, one to carry a continuous strip or roll of sensitized paper and the other upon which the paper is wound when printed, a plate or surface over which the printing-paper passes and upon which the negative is placed during the operation of printing, a frame to hold the negative in position, and also a cover or shutter to prevent access of light when closed.

It will be fully described with reference to the accompanying drawings.

Figure 1 is a perspective View of one form of the apparatus; Fig. 2, a front view of same; Fig. 3, a longitudinal section of Fig. 2 with the shutter or cover open; Fig. 4, a longitudinal section of Fig. 2 with the shutter or cover closed; Fig. 5, a transverse section on line w 0.0, Fig. 2. Fig. 6 is a perspective view of another form of the apparatus.

A frame or case A is constructed with two inclosed boxes or receptacles B B, one placed at either end, and in each of these receptacles is removably fitted a roller C C, upon which the printing-paper D is'wound. Between the boxes or receptacles B B is fitted a flat plate or surface E, of wood, glass, or other smooth material, over which the printing-paper D travels and upon which the negative-plate F is placed. Each roller C C is fitted with a knob or handle 0 c, by which it can be rotated in its bearings to wind the printing-paper D in either direction as required, and the receptacles B B are provided with lids or covers 6 7/ to exclude light from the rolls. To the frame A is hinged or otherwise secured a second frame G, which is closed down upon the negative-plate F to hold it in position upon the printing-paper D. The frame G is formed with an aperture 9, corresponding in size to the negative-plate F, to admit light thereto, and it is also provided with two pads or cushions g, of india-rubber or other soft material, to bear against the negative-plate to hold it in position. In the frame G an aperture is cut, and the lid 7/ is fitted with a piece of ruby glass 7" to permit of numerals or marks upon the paper being read without exposing it to light. The frame G is provided with a cover or shutter H, which is opened, as in Fig. 3, to expose the negative and printingpaper to light, and closed, as in Fig. 4:, when desired to exclude light. This arrangement (shown in Figs. 1 to 5) is more particularly designed for use with quick-printing papers, such as are known as bromid or gas light papers; but it may be used in the ordinary way for sun-printing papers.

In Fig. 6 the apparatus is shown arranged for printing with slow-printing papers when it is necessary to examine the paper as the printing proceeds without moving the position of the negative-plate F.

The frame A is constructed with two loose or removable closed boxes B B, one at either end, in which the paper-rollers C C are journaled and which can be lifted out with the roller and paper in position. To absorb moisture and maintain the paper upon the roll perfectly dry, each box is fitted with a perforated receptacle K at one or both ends to hold a moistureabsorbingmaterial, such as calcium chlorid. The frame A is provided with a ledge (0, upon which the negative-plate F rests. The plate or surface E, upon which the paper D rests, is loose or removable and isheld in position by two cross'bars E hinged at one end to the frame A and secured at the other by swiveling clips 0. Springs 0, fixed to the bars, apply an elastic pressure to the plate E. The

plate is hinged at c to allow either side to be raised up to examine the progress of the print- 1ng.

Over the face of the frame A for the purpose of vignetting two sliding pieces L L are placed in slides M. The pieces L L are of V shape, so that the size of the aperture formed. between is altered by moving them toward or away from one another.

The apparatus may be made to open both back and front, so that access can be had to the printing paper D and to the negativeplate F from either side of the apparatus.

The boxes or receptacles B B in which the paper-rollers C C are-mounted, are placed at each end of a central frame A with a central aperture A To one side of the central frame the second frame G is hinged, with a cover or shutter H to exclude light when desired. The frame G is provided with pads or cushions g to bear against the negative-plate F and hold it in position upon the fiat plate or surface E*. The fiat plate or surface is constructed of a loose plate inserted to rest against the shoulder e in the interior of the frame A and it is held in position by the cross-bars E hinged at one end to the frame A and secured at the other end by clips 6.

The loose plate E is hinged or jointed trans versely at e to allow either side to be raised to examine the progress of the printing. Small perforated receptacles K may also be provided to contain calcium chlorid to absorb moisture and maintain the paper dry.

The rolls of paper may be divided by marks or lines which pass under a ruby or other nonactinic glass, so that the operator shall not wind the paper too far.

An adapter may be provided, so that plates of different sizes may be printed on the same apparatus.

The frame is applicable to the printing of all kinds of paper.-

The apparatus is also applicable for the printing from or of long films, the negativefilm and the roll of paper, or the two films, being rolled up together and then gradually exposed.

The invention is also applicable as a travelers show-case, particularly for photographers, as a number of finished photographs may be mounted on a roll and exhibited one by one without the danger of the photographs getting soiled by handling, as at present. A celluloid or other cover may be provided for the photographs or other exhibit to pass un' struction, a frame to hold the negative-plate,

a fiat plate against which the negative rests, two closed receptacles placed one at either end, two rollers journaled in the receptacles, to

carry a strip of paper, a second frame attached to the first, cushioned strips affixed thereto to hold the negative-plate in position, said frame provided with an aperture to admit light to the plate, and a shutter pivoted to the frame to open or close the aperture, substantially as described.

2. In aframe for printing photographic papers from negatives, the combination with a case to hold the negative and a smooth flat printing-surface over which a strip of prepared paper is drawn, of two closed boxes B B, one placed at either end of the case, lids I) b fitted to the boxes, a removable roller 0 C fitted in each box to carry the printing-paper, a frame (ur provided with an aperture g hinged to the case A, two transverse cushions g of soft material fitted to the frame G to bear against the negative-plate and hold it in position, and a shutter H pivoted over the aperture g of the frame Gr, substantially as described.

3. In aframe for printing photographic papers from negatives the combination with a case to hold the negative and a smooth flat printing-surface over which a strip of prepared paper is drawn, of two loose removable closed boxes B B two rollers C C journaled in the boxes, perforated receptacles K fitted to the boxes to contain a moisture-absorbing material, a frame with central opening pivoted to the case, a shutter pivoted over the aperture of the frame, two cross-bars hinged at one end to the case and secured at their other ends by swiveling clips and springs fitted to the bars to apply pressure to the plate, substantially as described.

Inwitness whereof we have hereunto signed our names in the presence of two subscribing witnesses.

A. W. S. SANDERSON. Gr. B. BRADSHAW. Witnesses:

J. OWDEN OBRIEN, B. TATHAM WOODHEAD.

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