Improvements in Films for Photographic Cameras.
Year: 1893

page_text: Date of Application, 28th Mar., 1893
Complete Specification Left, 28th Dec., 1893-Accepted, 3rd Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements in Films for Photographic Cameras.
I THOMAS SAULT of 292 Ferry Street, New Haven in the County of New
Haven and State of Connecticut, United States of America, Consulting Engineer,
do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in films for photographic cameras, in which
provision is made for separating the films, when packed in successive layers within
the holder, so that a film-transferring device may be slidden between two successive
films, or may readily catch the edge of a film for the purpose of removing the films
successively from one section to another of the holder.
To this end, the films are provided along one of their edges, with small rounded
projections. The number of projections may be determined at pleasure, the object
being to have them at such intervals apart as will serve to hold the edge of the film
above from any considerable amount of sagging. These projections may be
conveniently formed by pressing the material of the film itself out from the face of
the film by means of a round pointed punch, or any well known or suitable device
adapted to the purpose. It is desirable that the sides of the projections toward the
edge of the film, where the transferring device is to enter between the films, should
be made sufficiently slanting to permit the end or edge of the transferring device to
slide over the projection without tending to buckle the film.
The order in which the projections are made, is preferably varied in each
succeeding sheet, so that a sufficient number of the projections will fall out of
alignment to hold the edges effectively separated.
The particular shape of the projections is immaterial, so long as the side toward
the advancing transferring device is so formed as to permit the said device to slide
readily over it, and separate it from the remainder of the films in the holder.
Dated this 28th day of March 1893.
NEWTON & SON,
Agents for the Applicant.
Improvements in Films for Photographic Cameras.
I, THOMAS SAULT of 292 Ferry Street, New Haven in the County of New
Haven and State of Connecticut, United States of America, Consulting Engineer,
do hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:
My invention relates to improvements in films for photographic cameras, in which
provision is made for separating the films when packed in successive layers within
the holder, so that a film-transferring device may be slidden between two successive
films, or may readily catch the edge of a film, for the purpose of removing the
films successively from one section to another of the holder.
A practical embodiment of my invention is represented in the accompanying
drawings, in which :
Fig. 1 is a partial view, in section, of a film holder, shewing several of the
improved films therein, and a transferring device in position to enter between the
films to remove one of them to another part of the holder;

page_text: Fig. 2 is a view of two of the films separated from each other, and shewing the
spacing device along their edges; and,
Fig. 3 is an enlarged view, in detail, and in transverse section, of a part of one of
the films, the section being taken through one of the spacing devices.
I have chosen, to illustrate the practical use of my present invention, so much of
a film-holder as will be sufficient to clearly indicate the effect of the spacing devices
along the edge of the films, as a means for permitting the transferring device to
enter freely between each two successive films, or to readily catch the edge of a
film, for purposes of transferring them.
The films are represented by A, and are provided, along one of their edges, with
projections a. The number of projections may be determined at pleasure, the object
being to have them at such intervals apart as will serve to hold the edge of the film
above from any considerable amount of sagging. The projections a may be
conveniently formed by pressing the material of the film itself out from the face of
the film by means of a round pointed punch, or any well known or suitable device
adapted for the purpose. It is desirable that the sides of the projections a, toward
the edge of the film, where the transferring device is to enter between the films,
should be made sufficiently slanting to permit the end or edge of said transferring
device to slide over the projection without tending to buckle the film.
In making the projections a, the order in which they are made is slightly varied
in each succeeding sheet, so that a sufficient number of the projections will fall out
of alignment to hold the edges effectively separated.
The particular shape of the projections a is immaterial, with the exception
hereinbefore noted, that the side toward the transferring device be so formed as to
permit the said device to slide readily over it.
The holder, as represented in Figure 1, is denoted by B, its door by b, the
transparent plate in front of the films by b¹, the slide by 2, and the follower by b³.
The transferring device, or so much of it as is herein shewn, is represented by C, and
is in the position which it assumes when it is about to be advanced between the film
against the transparent-plate and the next succeeding film to the rear.
1.do not wish to be understood as limiting the use of the films to the particular
holder shewn.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
:
A film for a photographic camera, having its surface raised along its edge, to
form a spacing for the admission of a transferring device between the edges of two
consecutive plates, substantially as set forth.
Dated this 27th day of December 1893.
NEWTON & SON,
Agents for the Applicant.