US1170576A - Moving-picture-film holder. - Google Patents

Description

R P. STlNEMAN & T. s. DARBY.

MOVING PICTURE FILM HOLDER.

APPLICATION FILED AUG-2Q, l9l5.

Patentd Feb. 8,1916.

RALPH P. STINEMAN AND THOMAS STAMPS DARBY, OF SAN DIEGO, CALIFORNIA.

MOVING-PICTURE-FILM HOLDER.

Specification of Letters Patent.

Patented Felt. a, 11916.

Application filed August 20, 1915. Serial No. 46,512.

To all whom it may concern:

Be it known that we,- RALPH P. STINEMAN and THOMAS S. DARBY, citizens of the .United States of America, residing at San Diego, in the county of San Diego and State of California, have invented certain new and useful Improvements in Moving-Picture-Film Holders, of which the following is a specification.

This invention relates to a moving picture film holder, the primary object of the invention being to provide a device of this character constructed in such mannerthat a considerable length of moving picture film may be readily and rapidly wound thereon, and which will support the film during the developing operation in such manner that the face of the film does not come in contact with any other part of the film, or that the face of the film at one point does not come in contact with the face of the film at an-.

other point.

It is a further advantage of the invention that the film is wound in a minimum amount of space and in such manner as to require a minimum' amount of developing fluid. By virtue of the fact that the device may be used in a very small space the developing of the film at the place of its exposure, is rendered possible, whereby the loss of a number of scenes from a complete series of pictures, is revented. Where the film is transported rom the place of its exposure to a distant point for development it frequently happens that some of the scenes are ruined in transit or in development and after it is too late to reproduce them except at great inconvenience and expense.

Further objects and advantages of the invention will be set forth in the detailed through.

description which now follows.

In the accompanying drawing: Figure 1 is a front elevation of a film holder constructed in accordance with the invention, and Fig. 2 is a vertical sectional view there- Like numerals designate corresponding parts in both of the figures of the drawing.

Referring to the drawing it will be seen that our improved film holder comprises aframe made up of a plurality of radial arms 5, secured to a central hub disk 6, of cup like formation. The hub disk is spanned by a handle 7 and is perforated at 8 so that the holder may be mounted to rotate upon an arbor 8 during the winding or unwinda ing of the film.

ecured to the radial arms 5 is a web 9, this web being spirally disposed. The arms 5 are bent over the rim of the spiral and are secured thereto and if desired additional short arms 5 may be disposed between the arms 5 to further aid in strengthening and bracing the structure, these arms being likewise secured to the spiral web 9.

In operation, one end of the film to be developed is secured to a hook 10 at the inner convolution of the spiral and rotation is imparted to the holder. By properly guiding the film against the face of the spiral the film is wound thereon, it being understood that the width of the spiral is not as great as the width of the film. We prefer to make the spiral only about onehalf the width of the film, but it is to be understood that this proportion may be varied at will. After the winding of the film upon the holder has been completed ,the holder is taken by the handle 7 and placed face upward in a shallow tank containing the developing fluid. After the developing of the film is completed the holder may be again lifted by the handle and placed in the fixing bath, and after the fixing is completed it may be placed in a washing tank, it being apparent that it is possible to carry out all of the steps without touching the film itself, and while the face of the film is maintained out of contact with any and every object which might tend to scratch or abrade it. Furthermore any part of the length of the film may be readily inspected from time to time, without the necessity of removing the entire film from the tank. Since all of the film is submerged at a time it follows that its development is uniform throughout.

While the elements shown and described are well adapted to serve the purposes for which they are intended it is to be understood that the invention is not limited to the precise construction set forth, but that it spirally wound web and means for maintaining said web fixedly in spiral formation.

3. The combination with a supporting frame comprisin a plurality of radially disposed arms 0 a spirally disposed film holding web secured to said arms.

4. A film holder comprising in combination a centrally disposed hub, of a plurality of radially disposed arms carried thereby,

said hub having an opening formed therelnto said hub, and at the edges of its convolutions to said arms and means disposed at 21131 inner end of said spiral fo engaging a 6. A film holder comprising in combination a centrally disposed hub, a lurality of radially disposed arms carried t ereby, said hub having an opening formed therein to mount the structure for rotation, a spirally wound film holding web secured at one end to said hub, and at the edges of its convolutions to said arms and a handle carried by said hub.

In testimony whereof we aflix our signatures in the presence of two witnesses.

RALPH P. STINEMAN. THOMAS STAMPS DARBY. Witnesses:

Jnssm SHERK, RALPH E. BAoH.

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