US1302700A - Film-developing device. - Google Patents

Description

1. H. OLIVER.

FILNI DEVELOPING DEVI-GE.

APPucATloN FxLED1uLf9.|91a.

Patented May 6,*1919.

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nnrrnn s'rn'rns JOHN n. OLIVER, Or LISBON, OHIO.

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To all whom t may concern.'

Be itiknownl that'zl, JOHN It. OLIVER, a citizen of the United States, residing at Lisbon, in the county of Columbiana and State of Ohio, have invented certain new and useful Improvements in Film-Developing Devices, of which the following is a` specificaa tion. i

This invention relates to a film developing device, and has for its object, broadly, to provide a tank and a film-holder so arranged that lilms may be conveniently, economically and quickly developed. The invention includes the holder for the film in combination with a tank or liquid container.

The invention consists of the novel construction, combination and arrangement of parts as described herein and claimed, and as illustrated in the accompanying drawing, it being understood that size, form, proportion and minor details may be changed within the scope of the claims, without departing from the spirit of the invention, or sacricing .any of its advantages.

In the drawing, Figure l is aside view of vention, parts being broken away and in section to clearly show construction. Fig. 2

is a plan view of a cap or cover. Fig. Sis

a plan view of the tank, the cover being removed. Fig. 4 is a plan view of a filmholder and a hlm mounted thereon. Figs. 5 and 6 are fragmentary side views, respectively, showing a ridge for the cover and a lufor the wall of the tank.

eferring now to the drawing for a more particular description, I provide an annular, normally upright chamber 7, its bottom being indicated at a, and its outer and inner walls being indicated, respectively, at b and c, the latter wall being connected at its top by an imperforate web d; and the outer wall is provided near its top with an outwardly projecting, circular, endless ledge e, the terminal part of said outer wall, above the ledge, being provided with lugs j".

As thus described, a liquid container is provided, of annular form and open at its top,` and it will be appreciated that a film 8, when disposed in circular form, may be placed therein and subjected to a required action of a developing liquid, one of the advantages being that a less quantity of the liquid than ordinary will be required for developing a lilm, this being an economical feature. I provide a circular, foraminous Specicationiof Letters Patent.

Patented May e, 1919.

Application filed July 9, 1918. Serial No. 244,121.'

by the llm may be drawntaut when circumscribingorpartly encircling the foraminous support 9, the diameter of the latter being such that it, together with the film, `may be readily inserted within or removed from the chamber 7.,

Numerals `l2 and 13 indicate clipsA used respectively for securing the film to the lower and upper edges of the support 9, and which also provide means for preventing the hn from moving into engagement with the/wall o of the annular container, the clipsl also providing handles useful whenremoving the film and its support 9 `from said chamber. a hn developing device embodying my in- Numeral 14 indicates an elastic ring or gasket disposed on the ledge c, and by use of a cap or cover l5 the liquid may be confined within the container, the flange it of the cap being provided with ridges or pockets 7c for receiving the lugs f above mentioned when the cap is partly rotated for a mounting on the outer wall of the container and for pressing the gasket upon the ledge.

In operation, the support 9, together with theJ film, is inserted in the annular con tainer, the latter being partly filled with the developing liquid, and after the cap has been applied the device, usually, is rolled on a table or other liat surface, the result being that the film will be subjected to the action of the developing liquid to great advantage.

It will be noted that the imperforate web d, when the parts are assembled, will be disposed adj acent to the web of the cap to permit a free movement of the liquid therebe# tween during the operation of rolling, this feature tending to cause uniform development of the film. Also it will be seen that the lilm and its support may be moved from the liquid chamber 7 or placed therein without immersing the hands in the liquid, which will be appreciated by an operator, the work of developing a lihn requiring a washing in a series of liquids.

developing a film. It will be understood, ofv

course, that agitation of the liquid will be accomplished by shaking as well as by rolling, Iany abrasion of the film from possible contact with the walls of the container being prevented by the clips 12 and 13, whether the tank is shaken or rolled, development of films in either instance being cleanly, and effected without material expense or loss of time.

What I claim is my invention and desire to secure by Letters Patent is,-

l. Ina device for developing films, an annular liquid container open at its top and having its inner wall provided at its top with an imperforate web, a fora'minous member for holding a film and adapted to be disposed in the annular container, and a cover for engaging the outer wall of said liquid container for confining the liquid therein.

2. In afilm developing device, ahollow,cy lindrical member having a foraminous wall, for a support of a film when circumscribed thereby, a hollow annular chamber open at its top for receiving the hollow cylindrical member and said film, and a cap removably mounted on the outer wall of said. hollow annular chamber.l

3. In a film developing device, an annular holder of wire gauze, means on the wire gauze adapted to engl ige the ends of the film for securing the latter to the annular holder, clamping means for engaging the film and annular holder near their edges, an annular liquid container. open at its top for receiving the annular holder and film and having a ledge formed in its outer wall, a gasket on said ledge and a cap adapted to be mounted on the annular container in engagement with said. gasket.

4. In a film developing device, an annular holder, means on said holder for engaging the film for securing it to the holder, an annular liquid container open at its top for receiving the holder and lm, its outer wall being provided with outwardly projecting lugs and an endless ledge, its inner wall being provided with an imperforate web, an elastic ring on said ledge, a circular cap having a flange provided with recesses and adapted to have a rotatable movement for compressing the elastic ring, its recesses receiving the lugs of said outer wall.

In testimony whereof, I have affixed my signature in presence of two Witnesse.

JOHN R. OLIVER.

lVitnesses:

HIRAM A. STURGES, ARTHUR I-I. STURGES.

Copies of this vpatent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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