US1859131A - Film hanger - Google Patents

Description

Patented May 17, 1932 i UNITED STATES PATENT OFFICE FREDERICK A. DEPPERMAN, OF RIVERVALE, NEW JERSEY FILM HANGER Application led April 30, 1931. Serial No. 534,081.

This invention relates to film hangers used edges will fit into the channel irons 3 and 4 in developing photographic films, the object and be guided thereby until the opposite end being to provide an improved construction strikes the upright 2, whereupon the operator wherein the films are automatically held in must push the edge 9 from the position shown 5 place after having been properly inserted inin Figure 3 so that it may be `slid into the 55 to the hanger. channel iron as illustrated in Figure 2. This Another object of the invention is to promovement of the film produces a tension as it vide an improved hanger wherein the horiwarps the film. By reason of this tension, zontal bars are all curved, two of which act to the edge 9 presses against the side wall 10 of 10 support the film and one to support the hangupright 2 and the edge 11 presses against the 60 er in a container, while the respective hangers wall 12 of upright 1. The center of the film are nested. contacts at substantially point 13. In this A still further object of the invention is way there is provided ample open space 14 to provide a hanger with curved supporting whereby the walls may contact with the bot- 15 members and straight supporting members tom and top edges of the film from post 1 to 65 arranged to automatically hold the film in post 2. If the sensitive side of the lm is on place while exposing a maximum amount of the side of the space 14, it will be properly surface to the developing, washing and fixing developed or otherwise treated from top to solutions. bottom and from the inner edge of the post 1 Referring to the accompanying drawingsto the inner edge of post 2. If the opposite 7o Figure 1 indicates a hanger with a film side is the sensitive side, the entire surface thereon ready to be placed into a container. of the film will be properly treated except at Figure 2 is a sectional view through Figure the point 13 on the respective bars 3 and 4 as 1 on line 2 2. these points contact with the bars 3 and 4. Figure 3 is a View similar to Figure 2 but The extensions .15 and 16 not only act as T5 showing the film only partly inserted. mea-ns for supporting the hanger in a contain Figure 4 is a fragmentary top view of a er, but act as handles for lifting up the hanger Container and Several hangers embodying the or manipulating the hanger 1n any desired invention, the same b-eing on a reduced scale WayY and illustrating how part of the hanger de- Recently there has ben developed unusua-l- S0 pends into the container and part extends ly sensitive films which must be loaded on the across the top edge thereof. hanger in the dark, as ruby lights or other Referring to the accompanying drawings lights cap able of being detected by the human by numerals, 1 and 2 indicate upright chaneye will injure the film. lVhen loading a nel irons and 3 and 4 are what may be termed hanger 1n an absolutely dark room, the op- 'S5 horizontal channel irons, the same being parerafor must be guided by his touch. Conseallel with the supporting channel bar 5. Bar quell'tly, by having the hanger construction as f 5 is soldered, welded or otherwise rigidly sespecified, the operator may readily insert the cured to the uprights 1 and 2 but projects an film through slot 7 and then deflect edge 9 40 appreciable distance therebeyond so as to rest untll 1t enters the upright 2 whereupon the 9,0 on the top edges of the container 6 when the film 1s not'only 1n proper place but 1s under hanger is in use, The, upright; 1 is provided some tension whereby 1t 1s automatically with a slot 7 for the full distance between the IOCked 1n place and does not come loose even horizontal bars 3 and 4 whereby the film 8 When moved rather violently. may be readily inserted or removed. If de- By curving the bars 5 in addition to bars 3 95 sired, the film may be removed by bowing and and 4, the same number of hangers may be without movement through the slot 7 though placed in a container as heretofore. This in loading the film it is desirable to insert the structure which holds the films positively in same through the slot 7. As the film is inplace permits the operator to more or less serted through the slot 7 the top and bottom agitate the solution during the treatment of 100 2v l' fthe film without danger of dislocating any of the films being treated. In this connection, it will be seen that the overhanging shoulder 16 as illustrated in Figure 2 will present an abut- 5 ment whereby the film cannot readily move out of the opening 7.

I claim: 1. A film hanger comprising a frame having a pair of' uprights extending beyond the ,o frame, a supporting bar connected with said upright-s, said uprights being `substantially U-shaped in cross section, while the member connecting the uprights are bowed from one end to the other, said last mentioned members l 5 being formed with channels for the reception offilm, said film being bowed by said members centrally and at the ends held straight by the uprights whereby a tension will be produced on the film to prevent accidental displacen ment thereof.

2. A film hanger including a supporting frame curvedr from one end to the other', said fra-me being formed with channel irons, one channel .iron having a slot through which a film is adapted to be passed when loading the hanger, the curve of the frame causing a distortion of the film as it engages the respective ends kand sides of the frame, the sides engaged in the curved part of the frame, the ends in ya., the straight part, thus causing the ends to press against the straight part and thereby holdthe film in the frame against accidental dislodgement. Y 3. A vfilmhanger including a frame having s a pair of uprights formed U-shaped in cross section, said uprightsbeing straight, and a pair of side bars curved from one end to the other, each of said side bars being U-shaped in cross-section, one of said uprights having ,u a slot extending from one side bar to the other and supporting means connected with said side bars and extending beyond the same.

. 4. A film hanger including a frame having a pair of uprights, one of said uprights having an opening through which the film is adapted to be inserted in the frame, said last mentioned upright having a shoulder adjacent the opening presenting an abutment for preventing the film from accidentally Inoving out through said opening.

FREDERICK A. DEPPERMAN.

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