A Portable Apparatus for Producing Enlarged Copies of Photographs.
Year: 1893

page_text: Date of Application, 16th Nov., 1893
Complete Specification Left, 27th July, 1894-Accepted, 29th Sept., 1894
PROVISIONAL SPECIFICATION.
A Portable Apparatus for Producing Enlarged Copies of
Photographs.
EDGAR CLIFTON 106 Regent Street London W. Photographer, do hereby
declare the nature of this invention to be as follows:-
My invention consists of an improved apparatus for producing enlarged copies
of photographs either negative or positive from small clichés either on glass plates
or films. It consists of a rigid baseboard of suitable length having frames hinged
to both ends. The frame at one end is grooved so as to take an ordinary photo-
graphic dark slide capable of holding a plate film or paper of the dimensions of the
proposed enlargement. The frame at the other end is covered by a board with an
aperture to which is fitted a photographic lens. At each side of such opening are
placed grooves or runners in which is fitted a small bellows camera body having at
one end an opening for the aforesaid lens to pass through, and at the other a
suitable carrier for holding the film or plate which is to be enlarged from. These
frames are connected by means of a tube or body which may be made of leather,
cloth paper or other suitable material. This tube is made with such gussets or
folds as will enable it to be folded down flat upon the baseboard without detaching
it from the aforesaid frames. The small camera body is also made to fold so that
it may be closed without removing from the main body. Either or both of the
cameras may be provided with an adjustment for focussing or the focus may be
permanently fixed at the making the cameras.
Dated this 13th day of November 1893.
A
COMPLETE SPECIFICATION.
A Portable Apparatus for Producing Enlarged Copies of
Photographs.
I, EDGAR CLIFTON, of 106 Regent Street, London, in the County of Middlesex,
Photographer, 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 an improved form of apparatus for producing enlarged
copies of photographs (either negative or positive) from small clichés or plates,
which may be either on glass plates or on films.
The invention consists in a simple form of apparatus, which while capable of
being folded up into a small compass for convenience in transport, can be easily
and quickly opened out and adjusted for use when required.
The invention is illustrated in the accompanying drawing, in which :-
Fig. 1 is a side elevation of the apparatus opened out for use, and
Fig. 2 a sectional plan view of same.
Fig. 3 is a side elevation of the apparatus folded up for convenience in transport.
The apparatus consists of a base board A of any suitable or desired length, to
the ends of which frames B, C, are hinged, so that they can be folded down flat
upon the base board A when the apparatus is not required for use.
Struts or
supports b, c, hinged to the frames B, C, secure the frames in either the open
position as shown in Fig. 1, or the closed position as shown in Fig. 3.

page_text: The frames B and C are connected together by means of a camera tube or
body D, which may be made of leather, cloth, paper or other suitable material, and
which has the necessary gussets or folds (such as d) made in it to enable it to be
folded down without being detached from either of the frames.
The frame B carries an ordinary photographic dark slide E of a size suitable
for holding a plate, film or paper of the dimensions of the enlargement the
apparatus is to produce.
The frame Chas an aperture fitted with a photographic lens F, and is provided
with grooves or runners G in which the end frame H of a small bellows camera
body I can slide, such end plate H having projections J at each side, through slots
in which thumb screws K pass into the runners G, so that the height of the camera
body I in relation to the lens F can be adjusted as desired. The end plate H has
an opening through which the lens F passes, and the other end of the camera
body I is attached to a carrier L, in which a holder M for the film or plate N
from which the enlargement is to be made is mounted.
.
- From the frame a base board O for the camera body 1 extends, such base
board being made in two pieces which are hinged together at o, and which can be
made rigid with regard to each other by means of a sliding panel. The sides of
the base board O are made with grooves o' in which extensions from plates Q
attached to the carrier L can slide until such carrier is arrested by the stops l.
The carrier is secured in position by tightening up the thumb screws P on the
screw rod p passing through the plates Q, thus causing the latter to bind on the
sides of the base board of the camera body I, and so secure the carrier in
position.
The holder M for the film or plate from which the enlargement is to be made
slides in grooves made in the carrier L, and is composed of two frames hinged
together at m. The plate or film N from which the enlargement is to be made is
held in this holder M by means of rubber pads attached to each of the frames
round the openings therein, and the frames are fastened by means of catches m'.
To the top of the carrier L an exposing flap R is attached by means of a double
hinger, this flap R being thus enabled to fold down against the holder M (as
shown in dotted lines in Fig. 1) so as to cover the opening therein.
To use the apparatus a sensitized paper, film or plate of glass is inserted in the
dark slide E and backed with a piece of glass or cardboard. The plate or film
from which the enlargement is to be made is then inserted in the holder M, which
is then placed in position in the carrier L, and the exposing flap R is closed. The
dark slide is then inserted and secured in its place in frame B. The apparatus is
then pointed to a clear sky, the shutter of the dark slide pulled out, and exposing
flap R turned back to the position shown in full lines in Fig. 1. As soon as the
desired exposure has been attained the exposing flap is closed, and the enlargement
may then be taken out and developed.
When the apparatus is not required for use it may be folded up to the position
shown in Fig. 3, and this may be done in the following manner :-
The exposing flap R is closed down to lie against holder M, and the thumb
screws P are turned so as to unclamp the plates Q from the base board O, thus
releasing the carrier L, which can then be shifted back so as to lie against the end
plate H of the camera body I. The sliding panel in the base board O is then
moved to the position to allow the outer part of such base board to be turned on
hinge o to lie close against the exposing flap R, in which position it is secured by
the catch S attached to the top of carrier L. The struts or supports b, c, for the
frames B, C, are then detached from the pins with which they were engaged, and
such frames B, C, are then folded down to the position shown in Fig. 3, the gussets
or folds in the camera tube or body D permitting this movement without having to
detach such camera tube or body from the frames, which are then secured in the
folded position by passing the struts or supports over pins provided for the purpose,
as shown in Fig. 3.
Either or both of the cameras may be provided with an adjustinent for focussing,

page_text: or the focus may be permanently fixed if desired at the time of making the
cameras.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
A portable apparatus for producing enlarged copies of photographs, consisting
essentially in a rigid base board to the opposite ends of which frames are hinged
so that same can fold down in relation to such base board, and the two frames
being connected by a camera tube or body which can also fold up, one of such
frames being provided with means to receive a dark slide to contain the sensitized
plate or film on which the enlargement is to be made, while the other has an
ordinary camera lens secured thereto, and a small bellows camera being fitted to
the latter frame and into which the photographic lens projects, the outer end of
such small bellows camera being provided with means to receive the cliché or plate
from which the enlargement is to be made, all substantially as specified.
Dated this 2nd day of July 1894.
ALLISON BROS.,
Agents for the Applicant.