Year: 1888

page_text: Date of Application, 10th Jan., 1888
Complete Specification Left, 8th Oct., 1888
Complete Specification Accepted, 9th Nov., 1888
I ENOCH WOOD PERRY Junior of 42 East 14th Street New York City United
States of America Artist do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to provide a practical flexible photographic sensitive
plate or ribbon, as a substitute for glass or other material heretofore used for photo-
graphic negatives, and to this end my invention consists of a sensitized thin and
Hexible sheet of transparent celluloid, zylonite, or other pyroxyline-camphor com-
pound, which can be rolled and used in long lengths, or in separate plates, or cut, bent
or moulded to any size or form, so as to print upon flat or spherical or other than flat
surfaces, and which will resist the action of the developing chemicals, and through
which the photograph may be printed without removing the film, or receiving any
other manipulation than glass negatives.
The sheet of celluloid, zylonite or other pyroxiline-camphor compound, is made in
the usual manner, but without pigment, so that it is transparent or sufficiently so for
photographic purposes. A film of gelatine, nitrate of silver, bromide or other mixture
or emulsion, sensitive to the action of light is spread on one surface of this sheet which
film adheres to the sheet as to glass.
In use 1 prefer to stretch the sensitized sheet in long lengths upon rollers within the
camera so that the sheet may be distended to properly receive the impression. By
shifting the sheet many impressions may be taken without removing the rollers or
sheet from the camera. The exposed portions of the sheet may be cut into short
lengths and the negative developed, the same as if taken on glass, and after developing,
the picture may be printed through the transparent sheet the same as if the film were
mounted on glass.
The sheet will not soften, or be in any manner unfavourably affected by the chemicals
of the sensitive film, or by the developing chemicals.
E. W. PERRY, JR.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: An Improved Support for Photographic Sensitive Films or
Surfaces.
I, ENOCH WOOD PERRY, junior, of 42, East 14th Street, New York City, United
States of America, Artist, do hereby declare the nature of this invention and in what
inanner the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
The object of my invention is to provide a practical flexible photographic sensitive
plate or ribbon, as a substitute for glass or other material heretofore used for photo-
graphic negatives; and to this end my invention consists of a sensitized thin and
flexible sheet of transparent celluloid, xylonite, or other pyroxiline-camphor compound
which can be rolled and used in long lengths, or in separate plates, or cut, bent, or
moulded to any size or form, so as to print upon flat or spherical or other than flat
surfaces and which will resist the action of the developing chemicals and through
which the photograph may be printed without removing the film, or receiving any
other manipulation than glass negatives.
Reference is to be had to the accompanying drawings forming a part of this speci-
fication, in which figure 1 is a plan view of a long strip of my new photographic
negative, the shade indicating the sensitized surface. Figure 2 is an enlarged sectional
elevation on line a- of figure 1; and figure 3 is a sectional elevation of a camera,
shewing the proferred method of using my new negative. Similar letters of reference
indicate corresponding parts in all the figures.
A represents a thin sheet of celluloid, xylonite, or other pyroxiline-camphor
compound made in the usual manner, but without pigment, so that the sheet is
transparent or sufficiently so for photographic purposes. Upon one surface of the
sheet A is spread a film B of gelatine, nitrate of silver, bromide, or other mixture or
emulsion, sensitive to the action of light. The film B adheres to the sheet as to glass,
and the sheet being transparent is a perfect substitute for glass as a photographic
negative.
In use, it is my design to stretch the sensitized sheet in long lengths upon
rollers CC, the whole adapted to be placed in the camera. By means of the rollers,
I am enabled to stretch the sheet to properly receive the impression. By shifting the
sheet, many impressions may be taken without removing the rollers or sheet from the
camera. The exposed portions of the sheet may be cut into short lengths, and
the negative developed, the same as if taken on glass, and after developing, the picture
may be printed through the transparent sheet the same as if the film were mounted on
glass.
The sheet A will not soften, or be in any manner unfavorably affected by the
chemicals of the sensitive film or by the developing chemicals.
I am aware that celluloid has been used as a basis for hand painting, printing, and
lithographing, but never as an article for actual photographic direct-camera negatives
from which to print as with glass negatives.

page_text: This negative possosses every merit of glass with the additional advantages of less
weight and bulk, impossibility of breakage, absence of fibre, its toughness, and the
permanent results following the usual developing process, also its adaptability for use
in continuous lengths or in separate sheets.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. A photographic sensitive plate or ribbon, consisting of a sheet A of transparent
celluloid or other pyroxiline compound, sensitized upon one surface with a photographic
compound, substantially as described.
2. As a new article of manufacture, sensitized thin transparent and flexible
sheets of celluloid, xylonite, or other pyroxiline compound, substantially as
described.
3. The combination with a flexible and transparent sheet of celluloid or other
pyroxiline compound, of a film of photographic sensitizing chemical, substantially as
described.