US2550048A - Photographic film handling and drying frame - Google Patents

Description

pril 24, 1951 H. A. DURsT PHOTOGRAPHIC FILM HANDLING AND DRYING FRAME Filed July 20, 1948 Patented Apr. 24, l.1951

PHGTOGRAPHIC FILM HANDLING'A'NDf DRYING FRAME HugoA. Durst, Los AngelesrCalif..

Application July 20, 1948; SerfiaLNo'. 39;708

l Claim. 1i

,My inventionrelatesto. a frame.. for. receiving and holding photographic llmsotdiiierentsizes. while same are being develop-ed, ixed, washed' and dried, andthe'- principal objects of my invention are; to provide a simple; emcient and'.y inert pensive,v frame, especially designed to readily ceivevand hold lms while sarneare being, processed and: dried and further, to; provide:- affilm holder which may be readily adjusted so as to receive and hold lms of diferent sizes.

A further object of my invention is to provide a nlm holder which greatly facilitates the proper positioning of the nlm in the frame and the sub sequent removal therefrom.

With the foregoing and other objects in View, my invention consists in certain novel features of construction and arrangement of parts which will be hereinafter more fully described and claimed and illustrated in the accompanying drawing, in which:

Fig. l is a plan view of my improved 'film holder.

Fig. 2 is a cross section taken en the line 2-2 of Fig. 1.

Fig. 3 is an enlarged detail section taken on the line 3--3 of Fig. l.

Fig. 4 is a cross section taken on the line iof Fig. l.

Fig. 5 is a vertical section taken on the line 5-5 of Fig. 1.

Fig. 8 is a cross section taken on the line Ein-"i of Fig. 5.

Referring by numerals to the accompanying drawing which illustrates a preferred embodiment of my invention, I@ designates the frame handle consisting of a straight piece of strap metal, provided at its distal end with a hooi; H, and pressed in the intermediate portion of the top surface of said handle at predetermined spaced points, are indentations I2.

Rigidlysecured to the upper face of handle It below hook I i. is one end of a film supporting arm 3, which is l.-shaped in cross section and the free end of the upstanding web thereof, projects at right angles over the horizontal web, to form an inverted hook I4.

Rigidly secured on top of the end of arm i3 that is secured to handle IIJ, is one end of a hn clamping member i5 of resilient wire, which overlies the horizontal web i3 and the free end of this member, just beyond hooi: I@ terminates in a horizontally disposed loop It.

The central portion of member I5 is bent slightly downward to form a pressure point Il and formed in the top surface of the horizontal 2i wehfoff arm, Ifbelow. said dov-,inwardly bentporl`H tion, is-ia shallow recess; Hi:

Under: normal conditions, or with members Pi disengaged from heele I4,y point Il,v enter-s, but does not hear-y wth'- pressure in recess I8.V (see Fig; 3.)'.

./.rranged` for. sliding. movement oni handley III; isa plate- !Sl, the side edgesfz of.- which are bent so as to ile beneath said handle and secured to the underside of said plate is one end of a thin dat spring 2l, having a slightly bowed portion 22 which projects a short distance beyond one end of said plate.

Pressed downwardly from the bowed portion of spring 2l near its free end, is a small stud 23, adapted to engage in any one of the indentations i2, handle I0.

Secured on top of plate IS, is one end of an arm 2li, identical with arm I3, with the free end of said arm 24 terminating in a hook 25.

Secured on top of the end of arm 2t which is secured to plate ES, is one end of a spring 25, identical with spring I5 and having a loop 2l at its free end and a pressure point 23, near its center for engaging in a recess 29 formed near the center of arm 24.

In the use of my improved lm holder, plate I9 is moved lengthwise on handle I0 s0 as to space the arms I8 and 24 the proper distance apart to receive the nlm to be processed and said plate Will be releasably held in its adjusted position by the engagement of stud 23, in one of the depressions I2, springs I5 and 26 are now disarranged from hooks I4 and I5 and the nlm is placed in the frame with opposite ends thereof positioned between the horizontal flanges of arms I3 and 2d and said springs.

The free ends of the springs are now pressed down and engaged beneath hooks I4 and 25, thus firmly gripping the central portions of the ends of the nlm, thereby maintaining same in dat position during processing operations.

After nal washing of the film, the frame is suspended by engaging hook over a suitable support during the drying period and if desired, lower spring 26 may be disengaged from hook 25 thus releasing the lower end of the lm from the frame to facilitate drainage of water from the lower edge of said lm.

Among the advantages to be found in my improved fllm handling and drying frame are, ease of manipulation and adjustment, the firm gripping and 'handling of the nlm in flat position at two points on opposite edges thereof and the facile manipulation of the lm while same is being placed in and removed from the frame.

'Ihus it Will be seen that I have provided a nlm handling and drying frame that is simple in structure, inexpensive of manufacture and very effective in performing the functions for which it is intended.

Minor changes in the size, form and ccnstruction of the various parts on my improved iilm drying frame may be made and substituted for those herein shown and described, without departing from the spirit of the invention, the scope of which is set forth in the appended claim.

I claim as my invention:

In a nlm handling and drying frame, a handle comprising a one-piece straight bar of thin material, a hook formed on the distal end of said handle, there being a row of spaced indentations formed in the upper face of said handle, an arm L-shaped in cross section, having one end secured to said handle near said hook and extending at right angles to said handle, a hook on the free end of said arm, a resilient Wire spring overlying said arm and having one end secured to the end of the arm which is secured to the handle, the free end of said spring extending beyond the free end of said arm and adapted to engage in the hook on the end thereof, a plate arranged for sliding movement on said handle, a fiat spring carried by said plate and having a stud adapted to engage in the indentations in said handle to retain said plate in diierently adjusted positions, an arm L-shaped in cross section, having one end secured to said plate and extending at right angles to said handle, a resilient Wire spring secured at one end to the end of the arm which is secured to said plate, a hook on the free end of said second mentioned L-shaped arm for receiving and holding the free end of said last mentioned spring and the central portions of both springs being bent downward to form Contact points for engaging on top of the central portions of the arms on which they are carried When the free ends of said springs are engaged in the hooks at the free ends of said arms.

HUGO A. DURST.

REFERENCES CITED The following references are of record inthe file of this patent:

UNITED STATES PATENTS Number Name Date 1,214,408 Barr et al Jan. 30, 1917 1,398,938 Chapman Nov. 29, 1921 2,166,387 Bassin July 18, 1939

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