US52896A - Photographic printing-frame - Google Patents

Description

i UNTTien STATES X a TTT PATTLNT DAVID SHIVE, OF PHILADELPHIA, PENNSYLVANIA.

Specitieation forming part of Letters Patent No. 52,@96, dated Irebruary 27, D66.

To all whom it may concern:

Be it known that I, DAVID SHIVE,ot` the city of Philadelphia, in the State of Pennsylvania, have invented a new and useful Photographic Printing-Frame; and I do hereby declare that the following is a full, clear, and exact description ofthe construction and operation ofthe saine, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a perspective view of the frame half opened, and showing the relative positions ofthe negative and the plate to beprinted upon, and Fig. 2 a central vertical section of the same parts fully opened, like letters of reference indicating the same parts when in both gures.

The object of my invention is to afford a simple and accurately-working printing-traine for the use of photographers, whereby the operator can, at will and with the greatest facility, separate and close together again the two plates in examining the progress of the printing without any risli of disturbing the relative positions ofthe same in the frame.

It consists, substantially as hereinafter described and specilied, in combining with afranie having two parts hinged together a pair of slides, each operated by a hand-screw in the frame, so as to serve to clamp the two opposite edges of the respective plates between the slides and the frame and hold them rmly in such a manner that their faces can be either separated or brought together in the same plane at the will of the operator without disturbiug their relative positions, as aforesaid.

My invention also consists in the application to one of the parts of a two-part photographic printing-traine of side guides, so that they will receive the other part accurately between them in closing the said two parts together, for the purpose of insurin g greater accuracy in the closing together' of the same.

In the drawings, A and A are the two parts ofthe frame, hinged together, B and B their respective slides, G and G their respective operating-screws, and D and D their negative and opal plates as clamped between their respective slides and the two parts ofthe fraaie.

The part A is siin pl y arectangular frame of hard wood, having tongues a2 t2 along on its two opposite inner sides for supporting its respective slide B.

The bottoni part, A, is also a rectangular frame of hard wood, and is of the saine size as the part A. It is provided with side tongues, a3 a3, and also with two raised or upright side pieces, aL a4, which serve the purpose of guiding and keeping in more perfect oppositeness the two united parts A and A of the frame in closing them together. It is also provided with a pasteboard or thin wooden slide, E, which, when inserted,as in Fig. 1, closes the open bottoni of the frame and prevents the entrance of light from below it. In Fig. 2. it is shown as partially withdrawn.

The slides B and B are also made of wood, and to t the width ofthe open spaces in the respective parts A and A ot' the frainc, and with their top and bottoni sides tlush therewith. They are also provided with suitable grooves in their outside edges, which receive the tongues a2 a2 and as a3 respectively, and are, besides, made short enough to allow the plates D D to be respectively inserted horizontally between thein and the parts A and A of the traine.

The hand-screws G and C are made to be easily rotated'by hand through the middle of the free end of each of their respective parts A A', and consequently, with their inner ends hearing against the slides B B', enable the operator to clamp the plates D D between the latter and the parts A A.

rPhe whole frame is stained or painted dead black for the purpose of avoiding all reflection of light.

The upper part, A, ofthe frame is intended to hold the negative plate D, while the lower part, A', holds the opal, glass, or other plate, D,'intended to be printed upon. In using this frame the operator opens it ulliciently wide and places the inner side of the part A down upon a table or other even tlat support, and, retracting the screw C and slide B, places the negative plate D down iiatly upon the said table or support and between the slide and the frame, and linally screws up the slide so as to clamp the said negative plate iriuly by its two opposite edges between the slide and the part A of the frame, as seen in the drawings. He now lifts the whole apparatus, closes together the two parts A A, securing them closely together by means of the catchhookf, and replaces it upon the table, and, with its bottoni side up, withdraws the Slide E and lays the opal plate D directly and rmly l down upon the negative plate D, and, holding it in oppositeness therewith, screws up the slide B', and thus secures the said plate iirmly between the latter and the partA' ofthe frame. He now returns the slide-board E into its norinal or closed position, and closing the two parts A and A', the apparatus is ready for printing, which operation, being Well known, it is not necessary here to describe.

It will be readily seen that this frame will enable the operator to adjust both of the plates D D with the greatest accuracy and facility, and also to quickly inspect, from time to time, the progress of the printing Without any danger or risk of disturbing the original positions ofthe said plates,

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In combination With the frame, having two parts hinged together, as shown, the slides B B' and screws C C', the same being constructed and arranged to operate together substantially as and for the purpose described.

2. The application of the side guides, a4 a4, to one of the parts A or A of a photographic printing-frame, so as to operate in the manner described, for the purpose specified.

DAVID SHIVE.

Witnesses BENJ. MoRIsoN, JNO. SIMMONS.

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