Improvements in connection with Photographic Cameras.
Year: 1892

page_text: Date of Application, 1st Dec., 1892
Complete Specification Left, 31st Aug., 1893-Accepted, 1st Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements in connection with Photographic Cameras.
CHARLES SHAW, 104 Aston Road, Birmingham Manufacturer of Photographic
Apparatus, JOHN BURN 41 Sturge Street, Birmingham, Foreman Brassfounder,
do hereby declare the nature of this invention to be as follows :—
The object of our improvements in connection with cameras is first, to so
arrange the inside of any photographic camera so that it shall be used for stereo-
scopic work, & secondly, to make a superior combination between the dark slide
& a changing box.
In carrying out our improvements in a photographic camera, we make the
ordinary camera, for half plate work, & so arrange the inside of the camera, that
thereby we can take stereoscopic views therein. We divide the open space of the
inside of the camera, by placing therein, an india-rubber sheet right down its centre,
this india-rubber sheet is attachable detachable to the camera, by being fastened
at each end to a piece of brass, & also notches are made in the back & front
frames of the camera, for each piece of brass to lodge therein, & to hold in position
the sheet of india-rubber, dividing the inside of the camera for stereoscopic work,
& with its usual two lenses, & also with or without revering frame for taking
pictures vertical or horizontal. We make our dark slide, which fits the back frame
of the camera, with its sliding pannels, & to carry the two plates & also to fit, &
adjust itself with accuracy into the changing box, & having at one end a sliding
brass plate therein. We make our changing box, such a size & shape that may be
required, & to carry a dozen plates more or less, this changing box is closed at all
parts except one end, which is fitted with a top, having two apertures, & two sunken
brass sliding plates to slide over them. We fill this changing box with as many
plates ready for use as may be required. We insert one end of the dark slide into
one of the sunken openings on the top of the changing box, & it locks itself into
a brass catch, & both are held together tightly in position, & all light is excluded,
for the sunkin surface is linned with velvet, or other material. We withdraw the
brass sliding plate, from the dark slide, & likewise from the changing box, & these
two bound together by catches, we invert & a couple of plates slide, from the
changing box, into the dark slide, & two brass sliding plates are pushed into their
former position, & the dark slide is detached from the changing box & placed into
the back frame of the camera, & when the picture is taken, the dark slide is again
attached to the other sunken opening on the top of the changing box, as before
described, & the plates slide from the dark slide into the changing box to wait for
further development. The dark slide, & the changing box are attached & detached
as often as may be required.
We form a brass frame upon the changing box, to hold index tablets of contents
of the changing box. It is understood we shall adopt any mere modification in
carrying out our invention that may be required, & also use any class of material
required for trade purposes.
Dated this 29th day of November 1892.

page_text: COMPLETE SPECIFICATION.
Improvements in connection with Photographic Cameras.
CHARLES SHAW, 104 Aston Road, Birmingham, Manufacturer Photograph
Apparatus, and JOHN BURN 41 Sturge Street, Birmingham, Foreman Brassfounder,
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:-
The object of our improvements in connection with cameras, is first to arrange
the inside of any photographic camera, so that it shall be used for stereoscopic
work, & secondly, to make a superior combination between the dark slide & a
changing box.
In carrying out our improvements in a photographic camera, we make the
ordinary camera, for half plate work, & so arrange, the inside of the camera,
that thereby we can take stereoscopic views therein.
We construct two pieces of brass rods & attach a suitable india-rubber sheet,
or other material, that may be required.
We make four brass staple-holders.
We cut out four notches in the camera, two in front, one at top, & bottom, of the
centre frame woodwork, & also likewise at the back of the camera, in the wood-
work of the frame-the four brass staples we fix one in each of the notches of the
camera, so cut out. The two brass rods holding the india-rubber sheet.
We place
the ends of one of the rods in the brass staples, in the front of the camera-& draw
the other brass rod, through the camera, bringing with it, the india-rubber sheet,
& lodge the ends of the brass rod in the brass staples-in the back of the camera-
& the india-rubber sheet, being streched as shown in the drawings in Figure five,
divides the space inside the camera, for stereoscopic work, & with the usual two
lenses, & also with or without its reversing frame, for taking pictures, vertical, or
horizontal.
The india rubber sheet or elastic band is attachable, & detachable, to the camera,
with its brass rods-also it is made to form any shape required, as seen in the
drawings at Figure five at p p.
We make our changing box, such a size & shape that may be required, to carry
a dozen plates, more or less. This changing box, is closed at all parts except one
end, which is fitted with a top having two apertures, & two sunken brass sliding
plates to slide over them, as seen in Figures 1 & 2, or we can also make an opening
at the bottom of the changing box (as seen in Figure 1 g) to receive all the plates
at once, without placing them through the sunken apertures at the top with as
many plates ready for use as may be required. The plates are in pairs, & we
make for this purpose, two metal rims, & one metal sheet-one rim is fixed to the
metal sheet & a plate is placed on each side of the metal sheet, & in the rim
thereof & then the other rim, goes upon the plates, & metal sheet, or their edges
thereof, & two plates are held together-or the two rims, may only be used; for
this purpose, the rims, & metal sheet, are shown at Figure 4. When these plates
are in the changing box, & to prevent them from wriggling about, we place a
flat bent spring, at one side of the inside of this box, as shown at Figure 3,
which presses against the rims or the edges & the plates are held in position.
This spring is worked, in & out of action, by a cam-lever-& which is placed
upon the outside of the changing box. We make the usual dark slide, but add
thereto a brass sliding plate, & this dark slide fits upon the back frame of the
camera.
In connecting the dark slide, with the changing box, as shown in Figures 1 & 2,
we insert one end, of the dark slide into the sunken, opening on the top of the box,
& it lock's itself into the brass catches, & both are held together, in one position,
& all light is excluded, for the sunken surface, we place velvet, or other material

page_text: thereon. We withdraw from the dark slide, the brass sliding plate-& likewise
the brass sliding plate, from our changing box, & these two bound together by
the catches, we invert, & a couple of the plates slide from the changing box,
into the dark slide, & the two brass sliding plates are pushed into their former
position, & the dark slide is detached from the changing box, & placed into the
back frame of the camera.
When the picture or pictures are taken, the dark slide is again attached, to the
other sunken aperture, on the top of the changing box, as described, before &
shown in the drawings at Figures 1 & 2, & the plates slide into the box & wait for
further development.
So that our invention may be more fully understood we will now describe the
accompanying drawings & the same letters indicate corresponding parts therein.
Fig. 1. represents the changing box & the dark slide in combination.
Fig. 2. represents a sectional view, of the end, of the changing box, & dark
slide.
Fig. 3. a sectional view, of the changing box, showing the spring in position, for
holding the plates from moving.
Fig. 4. represents plan elevation, of the metal sheet, & rims.
Fig. 5. represents the india-rubber sheet & brass rods, & also the staple for
holding the brass rods in the back & front of the camera.
c. the brass slides
a. changing box. b dark slide, bound to the changing box.
in the changing box. d. brass slides in dark slide. E. catches on changing box
for fastening the changing box & dark slide together. F. disc for holding slides
in position. G. sliding bottom of changing box. H. disc for fastening in the slide
of the bottom of the changing box. K. the cam to work the flat spring inside the
changing box. J. the spring. L. inside the changing box, at its bottom. M. metal
rims & sheet. N. spring on metal sheet to keep plates in position. O. india rubber
sheet. Poblong india rubber sheet, if required this shape. Q. brass rods holding
india-rubber sheet ready to be put within the camera. R. staple holder to be
placed into the notches made in the front & back of the frame woodwork of the
camera. S. the loose bottom. I. the ivory tablet-which is fixed upon the
changing box-for showing the contents of the box.
Having now particularly described & ascertained the nature of our saith inven-
tion, & in what manner the same is to be performed we declare that what we
claim is
1st. To divide the open space of the inside of a camera, by an india-rubber sheet
or other material, as set forth illustrated, & described.
2ndly. The changing box, & its combination with a dark slide as set forth
illustrated, & described.
3rdly. The rims to hold together the plates as set forth illustrated & described.
Dated this 30th day of August 1893.
Deted this 30th day of August. 1893.
JOHN BENNETT,
161, Burbury Street, Birmingham, Patent Agent for the Applicants.
JOHN BENNETT,
161, Burbury Street, Birmingham, Patent Agent for the Applicants.