Improvements in or connected with Apparatus for Holding and Changing Photographic Plates.
Year: 1890

page_text: Date of Application, 2nd Apr., 1890
Complete Specification Left, 31st Dec., 1890-Accepted, 21st Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in or connected with Apparatus for Holding and
Changing Photographic Plates.
I, CHARLES HENRY STANBURY, of 91, Fleet Street, in the City of London,
Trunk and Portmanteau Maker, do hereby declare the nature of this invention to
be as follows:-
This invention relates to a holder or box for containing sensitive plates both
before and after they have been exposed and to means for transferring the plates
to and from the camera.
The box is provided with a number of slides with spaces between for receiving
the plates and the back of the camera is provided with two slides having a space
between to receive a plate.
The outer ends of the slides carry flanges which come against the ends of the
partitions between the slides so as to make as light tight a joint as possible.
In order to transfer a sensitive plate from the box to the camera, the back is put
on to the bottom of the box, and the lower slide of the box and the upper slide of
the camera back are pulled out, whereupon the plate drops from the box into the
back the slides are then pushed in again. After the plate has been exposed in
the camera, it is put back into the box, but this time at the top. In order to
make room for it the slides in the box are pulled out one by one in succession
allowing each plate to drop down into the next space below that which it previously
occupied, so that now the top space is empty whilst the bottom space contains a
plate. The back of the camera is then placed upon the top of the box and its slide
and the top slide of the box are pulled out, the plate drops into the box and the
slides are pushed in again. The next or second plate which is now at the bottom
of the box is transferred to the camera in a similar manner and so on.
Dated this 2nd day of April 1890.
CARPMAEL & Co.,
Agents.
COMPLETE SPECIFICATION.
Improvements in or connected with Apparatus for Holding and
Changing Photographic Plates.
I, CHARLES HENRY STANBURY, of 91, Fleet Street, in the City of London,
Trunk and Portmanteau Maker, 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 :-
This invention relates to a holder or box for containing sensitive plates both
before and after they have been exposed and to means for transferring the plates to
and from the camera.
The box is provided with a number of slides with spaces between for receiving
the plates and the back of the camera (or dark slide as it is often called) is
provided with two slides having a space between to receive a plate.
The outer ends of the slides carry flanges which come against the ends of the
partitions between the slides so as to make as light tight a joint as possible.
In order to transfer a sensitive plate from the box to the camera, the back is put
on to the bottom of the box, and the lower slide of the box and the upper slide of
the camera back are pulled out, whereupon the plate drops from the box into the
3:
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page_text: back the slides are then pushed in again. After the plate has been exposed in
the camera it is put back into the box, but this time at the top. In order to make
room for it the slides in the box are pulled out one by one in succession allowing
each plate to drop down into the next space below that which it previously
occupied, so that now the top space is empty whilst the bottom space contains a
plate. The back of the camera is then placed upon the top of the box and its slide
and the top slide of the box are pulled out the plate drops into the box and the
slides are pushed in again. The next or second plate which is now at the bottom
of the box is transferred to the camera in a similar manner and so on.
In some cases I replace the intermediate slides of the box by holders for the
plates but I retain the two outside slides.
In order that my said invention may be more readily carried into effect I will
proceed to describe the drawings hereunto annexed.
י
Figure 8 a transverse section, and
Figure 9 an end view of the back or dark slide of the camera.
Figure 10 is a longitudinal section of the box placed above the back, the lower
slide of the box and the slide of the back being pulled out for the purpose of
transferring a plate from the box to the back.
Figure 11 shews the back placed on the top of the box, the slide of the back and
the top slide of the box being pulled out in order to transfer the plate from the
back to the box.
AA are the slides in the box each of which is provided with a tab (numbered 1
to 7, Figure 1). B, B, are photographic plates which lie between the slides. The
slides pass out through slots at one end of the box (namely, the end which is upper-
most in Figures 1, 2 and 3 and on the right in Figures 10 and 11) and work in
grooves in the sides of the box, as shewn in Figure 4. The back of the camera is
provided with a slide C which is also provided with a tab. It also has a slide D
which is pulled out only for exposing the sensitive plate.
Figure 12 is a longitudinal section of an alternative arrangement in which a box
has only two slides A A, one at the top and the other at the bottom.
In this case
Teach plate is contained in a case or holder E, shewn in plan and longitudinal section
by Figures 13 and 14.
The ends of the slides and the ends of the holder are made of a V shape so that
when a holder has been dropped out of the box and still supports the next holder
the slide can be inserted between them so as to close the box.
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:―
1. Boxes for photographic plates so constructed that the plates can be taken out
at one side and put in at the opposite side substantially as described.
2. Boxes for photographic plates being at two opposite sides so formed as to fit
onto the back or dark slide of a camera such sides being closed by slides which can
be withdrawn to put in or take out the plates substantially as described.
3. Backs or dark slides of cameras formed to fit onto a box containing plates

page_text: and provided with a slide which can be withdrawn to put in or take out the plates
substantially as described.
4. Apparatus for holding photographic plates substantially as described and
shown in the drawings.
C. H. STANBURY.