Year: 1886

page_text: Date of Application, 24th June, 1886.
Complete Left, 24th Mar., 1887.
Complete Accepted, 26th Apr., 1887.
RESERVI
32
1. ARTHUR SAMUEL NEWMAN of 87 Evershot Road, Finsbury Park in the County of
Middlesex Electrician do hereby declare the nature of this invention to be as follows:-
This Invention has for its object to provide a means whereby the plates or
"films'
used in a camera can be readily changed without having to close or remove the
changing-box and is more simple and effective than changing-boxes as hitherto
constructed.
For this purpose I construct the changing-box holding any suitable number of
plates with two slits or apertures at the top of the box one at the back and the other
at the front. Over these slits a hood or covering is mounted of sufficient size to freely
contain a plate this hood or covering being formed of any flexible light-tight material
(or it may be a bellows) and is securely fixed on the box.
The plates or "films" are arranged in the box all facing the front and in order to
remove a plate on which a photograph has been taken and bring another plate into
focus without removing the changing-box or closing the shutter thereof, a cranked
lever is provided, (one end of which is outside of the box) and the other end connected
to a wire or rod reacting across the box and caused to travel (by the operator moving
the lever) in a parallel direction near the front of the box exactly in the place where
the front plate is situated and rising beneath it causes the plate to be raised into the
dark hood or covering and enables the operator to grasp it and draw it quite out and
insert it again through the back slit or aperture behind the other plates (a spring
mounted upon the back of the box keeps all the plates pressed forward) a fresh plate
being thus presented ready for use and in exactly the same focus the film of cach
succeeding plate being in the identical position occupied by the last previous one.
In order to effect this object I mount the plates in metal carriers which hold them
partly along the foot and each side at the top, where the metal carrier is turned over
or appears in front corresponding grooves or recesses are provided in the inside of the
front of the box, so that the front plate or "film" will always become the bearing

page_text: surface which will lie against a bearing specially provided in the box which latter
bearing is recessed or hollowed out behind so as to allow for the edge of the metal
carrier where different thicknesses of plates or " films" are used.
Instead of the cranked lever and rod before referred to, other means can be adapted
for raising the plate in the first instance such as by means of rack work, an endless
band, a lever and screw or other suitable means.
The whole apparatus forms a changing-box of the same sized sectional area as the
camera to which it is fitted.
This changing-box will also work equally well on its side.

page_text: Improvements in Changing-boxes for Photographic Cameras.
I ARTHUR SAMUEL NEWMAN of 87 Evershot Road Finsbury Park in the County of
Middlesex Electrician 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 has for its object to provide a means whereby the plates or films"
used in a camera can be readily changed without having to close or remove the
charging-box and is more simple and effective than changing-boxes as hitherto
constructed.
And in order that my invention may be clearly understood and readily carried
into practice. I will proceed to describe the same with reference to the drawings hereto
annexed which show several views of a changing-box, for a photographic camera
arranged and constructed in accordance with my invention.
Figure 1 is a front elevation Figure 2 an end elevation Figure 3 a vertical Section
and Figure 4 a horizontal section (on a larger scale). of the changing-box
Figures 5, 6 and 7 showing a front view an end view and a plan of one of the holders
full size.
The changing-box a is constructed (for holding any suitable number of plates b)
with two slits or apertures a' a' at the top of the box-one at the back and the other
at the front. Over these slits a¹ a² a hood or covering a³ is mounted of sufficient size
to freely contain one of the holders and plates b when lifted out of aperture a¹ this
hood or covering a being formed of any suitable flexible light-tight material (or it
may be a bellows) and is securely fixed on the box a.
C
The plates or
films" in their holders are arranged in the box a all facing the
front and in order to remove a plate on which a photograph has been taken and bring
another plate into focus without removing the changing box a or closing the shutter a
thereof, a cranked lever c is provided (one end of which is outside of the box) and the
other end connected to a wire or rod c¹ reaching across the box. a and is caused to
travel (by the operator moving the lever c) in a parallel direction near the front of the
box exactly in the place where the front plate 6 is situated and in rising beneath it
causes the front and plate holder b to be raised into the dark hood or covering a³ and
thus enables the operator to grasp it and draw it quite out and insert it again through
the back slit or aperture a behind the other plates and holders b, (a spring d mounted.
upon the back of the box keeps all the plates pressed forward) a fresh plate 6 being
thus presented ready for use and in exactly the same focus, the film of each succeeding
plate being in the identical position occupied by the last previous one. (The hood or
cover a when out of use can be pressed down into the recess a*.)
b
In order to effect this object I mount the plates in metal carriers or holders 6 which
hold them partly along the foot and each side at the top, where the metal carrier bis
turned over or appears in front corresponding grooves or recesses are provided in the
inside of the front of the box so that the front plate or "film" will always become the
bearing surface which will lie against a bearing a shown in the sectional part plan

page_text: Figure 8 specially provided in the box which latter bearing a³ is recessed or hollowed
out behind so as to allow for the edge of the metal carrier b where different thicknesses
of plates or "films" are used.
Instead of the cranked lever and rod ce¹ before referred to other means can be
adapted for raising the plate in the first instance such as by means of rack work, an
endless band, a lever and screw or other suitable means.
The whole apparatus forms a changing-box of the same sized sectional area as the
camera to which it is fitted.
This changing-box will also work equally well on its side.
The holders may have consecutive numbers on the back which can be seen through
a ruby glass window let into the back of the box a to see when the last or any other of
the series of plates has been exposed. Or other suitable means may be employed for
ascertaining when any one or the whole of the series of plates have been exposed.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
1. The improved arrangement and construction of changing boxes for photographic
cameras in which a series of sensitive plates or films in suitable holders are so arranged
that the front plate of the series after exposure to the light can be raised up into a light
tight chamber and transferred to the back of the series of plates the next of the series
being expeditiously moved to the front ready for exposure and so on in succession
until the whole of the series of plates have been exposed without having to close or
remove the changing-box or disturb the camera the whole being arranged to act
substantially in the manner and for the purposes described and represented in the
drawings hereto annexed.
2. The carrier or holder made of metal or other suitable material and of such shape
as to allow the film on the plate to occupy the proper focusing position by coming
against the fixed rib or projection a whatever thickness the plate and holder may be
substantially as and for the purpose hereinbefore described and represented in
Figure 5 of the drawings annexed."