US2118738A - Device for holding cut photographic films for developing and fixing - Google Patents

Description

y 4, 1938. J. c. RIEGER' 4 2,118,738

DEVICE FOR HOLDING CUT PHOTOGRAPHIC FILMS FOR DEVELOPING AND FIXING Filed June 4, 1937 I I" I W I II I 1 l I I I 3 I; I I I I I I I 1% I I I I I I I Z J INVENTOR.

Patented May 24, 1938 2,118,738

DEVICE FOR HOLDING CUT PHOTOGRAPHIC FILMS FOR DEVELOPING AND FIXING John O. Rieger, Louisville, Ky.

Application June 4, 1937, Serial No. 146,331

1 Claim. (Cl. 95100) My invention relates particularly to racks or desirable purpose of affording a photographer devices for holding individual cut photographic a safe and efiicient holder for developing and films in the process of developing and fixing. fixing his cut photographic films without the And some of the objects of my invention are, danger of fogging them with metallic contacts first, to provide a rack for holding out photosuch as frequently happens in the use of metallic graphic films, of such a character as can be made film-holders, but, also, for the purpose of prointegral by a moulding process; second, to devise viding an operator with a film-holder, so smooth a holding rack for developing and fixing portrait in its structure that when moved it will not catch films, so smooth in all parts that, when inserted against nor entangle other contiguous or adjainto, or removed from, the bath-tank it will not cent, similar film-holders that may be hanging l0 catch into, nor disturb other film-racks that may, beside it. And with these purposes and special at the same time, be hanging in the bath-tank; objects in view, I will now describe my invention and third; to design and develop a device for at length, pointing out specifically the new and H holding out photographic films for developing useful features and explaining the construction and fixing, that will have no metallic parts to and purposes of the individual parts and the fog the film, installed therein and will have all combinations thereof, as illustrated in the drawsurfaces in the holding rack rounded to prevent ing hereinabove described, in which similar adhesion wherever the installed film would come characters refer to similar parts throughout the in contact with the holder. several views.

With the above and other objects in view, In the design and construction of my new 20 which will appear in the process of the descripdevice for holding out photographic films for tion, I will explain that my invention, the new developing and fixing, I have developed a and useful device for holding out photographic strong, rectangular, symmetrically-formed filmfilms for developing and fixing, illustrated in the holder, having a horizontal bottom-portion 2 and accompanying drawing which forms a part of extending upward from the ends thereof two this specification, is a practical device embodyparallel side-portions, I, I, integral with the boting the said novel means and other new and tom-portion; the side-portions, I, I, being inteuseful details of construction, arrangement and grally connected across their upper ends by combination of parts, all of which together with means of a hanger-beam 4 set parallel with said their functions, will be described in detail with bottom-portion of said holder. A short distance 30 reference to said drawing and will be definitely below the hanger-beam 4 and parallel therewith, pointed out in the claim that follows this de- I have designed two parallel throatbeams, 3, 3, scription, so that any person skilled in the art, integrally connecting said side-portions and may understand how to construct and use this forming between said beams, the uniform, open 5 device. throat 3a In said drawing, Fig. I is an elevational view Now, between the ends of the bottom-portion of the side of the device for holding out photo- 2 I have made the open channel 2a, provided graphic films for developing and fixing. with convexly-rounded sides and a plurality of Fig. II is a plan view of the underside of the drain-holes, 2b, 2b, leading vertically down from bottom part of said device, showing the drainthe bottom of said channel and adapted to drain 40 holes therein. out any liquid that may tend to lodge in said Fig. III is a vertical projection, in detail, of the channel, as shown in Figs. I, II, and IV. And top of an enlarged fragment of parts of said dealong the entire length of the side-portions, I, I, vice including a part of the throat. I have made similar channels, la, la, provided Fig. IV is a cross-sectional view of the chanwith similar rounded sides with dimensions simi- 45 neled sides and bottom of said device for holding lar to the dimensions of the channel 2a, and cut portrait films, cut in the plane B B. adapted to join the channel 2a at the lower Fig. V is an elevational view, in detail, of a corners of said film-holder, so that I have, along fragment of the inside of an upper portion of the inside of both side-portions, I, I, and the botthe right channeled side of said device, includtom-portion 2, a continuous channel of like di- 50 ing a cross-section of the horizontal hangermensions and character, with the open throat 3a beam and a cross-sectional view of the two bevat either end thereof merging directly into said eled throat-beams, cut in the plane A A. channel. And to prevent undue side-movement This invention has been designed and deof my film-holder while pendent on the suspenveloped in its various details, not only for the sion rods of the bath tank, or elsewhere, I have 55 provided a notch 4a in each end-portion of the hanger-beam 4, as shown in Figs. I and III.

In my business, as photographer, I have been using various types of holders for out photographic films for developing and fixing; and I have found them heretofore made of metal and provided with metallic spring-clips or rotating parts, adapted to clasp and hold the film in place after it has been set into its holder. And I have found some objections to film-holders of this character, as follows:These accessory springclips and rotary clasps are tedious to attach to the films or to detach therefrom and, further, these accessory parts are likely to become entangled with other holders that may be hanging with them, provided with similar parts, to the annoyance of the operator who, of course, has to develop his films in an absolutely dark room. Moreover, those parts of the film that rest against metallic contacts in the development thereof become more or less foggy to the detriment of the prints therefrom.

But in the use of my new film-holder, we meet with no metallic parts at all; and we have no accessory clips nor rotary parts to adjust. We select the size of my new film-holder adapted for the size of our film to be developed and fixed; and merely push the film into the top of the two channels, I a, Ia, and slide it down through the open throat 3a and down along the channels, Ia, Ia, between the two side-portions, I, I, until it rests in the bottom of the channel 2a of the bottom-portion 2. We then lift the film-holder by the hanger-beam 4 and place it on suspension rods. The film is now securely held in place in the film-holder by means of the channels, la, la, in the side-portions, I, I, the bottomportion 2 and the throat-beams, 3, 3, until it is ready for removal from the bath-tank, which is properly done in lifting the holder up by the hanger-beam, allowing the adhering liquid to flow down into the channel Zn, from which it drains out through the waste-holes, 2b, 2b, in the bottom-portion 2 of the film-holder.

But, it should be understood that the specific detail of the portions of my new film-holder which I have herein illustrated and described, should not be considered as limitations in my practical device for holding out photographic films for developing and fixing, and that, while keeping within the scope of my invention and claim, any desired modification of these details may be made to facilitate production or economize in fabrication of the portions thereof, provided we keep within the spirit of said invention.

Now, having thus described the various features of my invention, the detail of construction, arrangement and combination of its parts, as well as its functions and purposes; those features and combinations of my invention that I consider new in the structure and useful in the nature of efiiciency, convenience and economy in the general practice of photography, and on which I desire Letters Patent granted to me, I have herein below set forth specifically in the following claim:-

In a device of a non-metallic, plastic material, for holding out photographic films for developing and fixing,a strong, rectangular, symmetrically-formed film-holder; a horizontally disposed bottom-member therein, smooth all along both outer sides thereof and provided with ample facilities for the efiicient drainage of any fluids therefrom; an integral side-member of similar shape smooth on both sides, extending upward a predetermined distance at right angles from each end of said bottom-member in the same plane therewith; a hanger-beam smooth on both sides arranged parallel with said bottom-member and integrally connected flush with the backsides of said side-members at the upper ends thereof; a continuous unbroken channel along the insides of said bottom-member and said side-members, open along the inside thereof; full, smooth conveXly-rounded inner sides along the entire length of said channel; convexly-rounded bevels along the upper inside edge of said hanger-beam and the inner edges of the tops of said channels, for the easy entrance of a photographic film therein; a short distance below said hanger-beam and parallel therewith, a pair of smooth, parallel throat-beams extending across from one side-member to the other and integrally-connected therewith, flush with outsides thereof, to prevent snagging adjacent films and film-holders in a developing tank; and full, smooth conveXly-rounded bevels along the insides of both said throat-beams, merging in convexly-rounded bevels into said channel in said side-members; as described.

JOHN C. RIEGER.

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