Improvements in Photographic Apparatus.
Year: 1890

page_text: Date of Application, 19th June, 1890
Complete Specification Left, 19th Mar., 1891-Accepted, 2nd May, 1891
PROVISIONAL SPECIFICATION.
Improvements in Photographic Apparatus.
I, LORENZ KOCH, of 5 Rue Mazagran, in the City of Paris, France, do
hereby declare the nature of this invention to be as follows:-
This invention relates to the frames which hold the sensitized plate in the
camera, and the invention consists in novel construction of frame whereby a
number of plates will be provided to take a number of pictures or portraits in
succession.
The apparatus consists of a case or box, the front of which is provided with
a sliding shutter. In this case slides a fraine intended to receive a number of
plates, say, six or eight. This frame has a solid back provided with springs
which press against the plates, and fitted to work in grooves in this frame is a
Hexible curtain, one end of which is secured to the upper part of the case.
The frame is provided with a handle by which it can be drawn out of the case,
the extent of its motion being limited by suitable stops.
When the frame is drawn out, the curtain is caused to cover the plates, & when
the frame is pushed in, the curtain passes down the back of the frame, so that when
the shutter of the case is raised, the plates will be exposed.
The sensitized plates being placed in the frame, which at this time is pushed
into the case, and the shutter being closed, the apparatus is placed in the
camera.
The frame is then drawn out, and the front plate is left in the case, and on this
plate the picture will be taken, when the shutter is raised and the cap taken off
the lens.
The frame is then lowered, and the plate is caused to pass to the back of the case,
and behind the series of plates. On raising the frame, the then front plate is left
in the case, ready to take another picture, and this operation is continued until all
the plates in the frame have been used up, when they will be taken out of the frame,
& developed in the usual way.
NEWTON & SON,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Photographic Apparatus.
I, LORENZ KOCH, of 5 Rue Mazagran in the City of Paris, France, 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:-
To obtain a negative by photography, it is usual to employ a sensitized plate,
which is placed in a frame or slide in the camera, and when the plate has been
exposed, to remove it from the frame and replace it by another plate.
Now the object of the present invention is to provide a frame in which a number
of sensitized plates may be placed, which may be readily exchanged one for another
without the necessity of removing the frame from the camera.
In order that my invention may be readily understood, I have shewn in the
accompanying drawing several views illustrating by way of example one way of
carrying it into effect.
Fig. 1 is a front view of the frame with the drawer containing the sensitized
plates drawn un and

page_text: Fig.
2 is a similar view, the drawer closed, and the shutter covering the plate
raised.
Fig. 3 is a side view shewing the drawer raised and the shutter closed.
Fig.
is a transverse vertical section of the frame enclosing seven plates, also
with the drawer raised and the shutter closed.
In all these figures, the same letters of reference indicate corresponding
parts.
A is a box frame fitted with a sliding drawer B, capable of containing a number
of sensitized photographic plates varying according to its dimensions. To the front
of the box A, is attached an automatic curtain C, formed of slips or laths of wood
or other material, or of flexible metal. This curtain slides in grooves formed
in the sides of the drawer B, and serves to cover the plates contained in the drawer,
and also as an abutment for the plate H which has just been exposed during the
substitution of another plate, which substitution will be effected by first drawing
out and then returning the drawer B to its place.
When the drawer B is closed, the fresh plate which has been substituted will be
in front, and will be covered by the shutter D. This shutter may be formed with
several slips in order to impart flexibility.
E is a stop for keeping the shutter D closed, and F is a handle for operating the
drawer Band for carrying the apparatus.
Having now described my apparatus, I will proceed to explain the mode of
operating the same.
In the drawing I have shewn a frame containing seven sensitized plates, and, as
may be seen on reference to Fig. 4, the first plate H, which has just been exposed,
falls to the back of the box Å, as shewn by dotted lines upon two springs hh,
carried by a cleat at the bottom of the box, whilst the rest are retained in the
drawer B.
-
In order to place the plate H2 in position, the drawer B must first be pushe
down, the heel passing behind the spring h, which will now thrust forward the
plate H, and cause it to slip behind the plate H, where it will be retained by
the springs nn, which at the same time press forward all the plates, and thus
bring the plate H2 next the shutter D.
In closing the drawer, the automatic curtain C slides in the grooves bb to the
back of the drawer B, and abuts against the heel When the drawer is com-
pletely closed, the plate H remains covered only by the shutter D, which may now
be raised in order to expose the plate.
In order to introduce the plate H3 when the plate H2 has been exposed, the
drawer B is pulled up, the curtain rolling over the front, and the fixed abutment
at preventing the plate H2 from rising with the others; and when the drawer is
completely drawn up, the plate H² will fall back to the place previously occupied
by the plate H
It will be sufficient to operate as above described for each negative until all the
plates have been exposed, when they may be withdrawn and a fresh lot of plates
introduced by a slide at the bottom of the box A.
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 .-
A frame for containing a number of sensitized photographic plates, pellicles, &c.,
to be employed in succession, as above described, and shewn by way of example in
the accompanying drawing, whether made in part or altogether of metal or any
other material, and varying both in form and dimensions according to the number
and size of the plates or pellicles it is intended to contain.
Dated this 19th day of March 1891.
NEWTON & SON,
Agents for the Applicant.