MENTS IN MEANS FOR INCREASING THE USEFULNESS OF PHOTOGRAPHIC CAMERAS
Year: 1884

page_text: I Fox SHEW of 88 Newman Street Oxford Street in the County of Middlesex,
Manufacturer do hereby declare the nature of the said Invention for IMPROVE-
MENTS IN MEANS FOR INCREASING THE USEFULNESS OF PHOTOGRAPHIC CAMERAS,
to be as follows:-
The invention has for its object the construction and adaptation of means for
enabling a camera and lens of any given size to be used for working plates of
larger sizes than that ordinarily employed for the said camera.
For this purpose I construct an additional frame of somewhat similar character
to the body of a camera with capability of extension and contraction by means of
bellows or telescopic frame and provided with means for holding it at any required
position of extension or contraction as also for steadying the same, but with no
bottom board.
One end of such additional frame is provided with a frame containing the
ordinary ground glass or back for focussing and with grooves to receive the frame
containing the sensitized surface while the other end of such extra frame is
provided with a skeleton frame which is so constructed as to be capable of being
slidden into the groove of the camera frame into which the lens front is usually
slidden.
A lens front I then slide into the grooves of the camera ordinarily used for the
back.
The opening in the skeleton frame of the additional frame is formed large
enough to form no obstruction of the visual rays and if necessary the opening in
what is ordinarily used as the front of the camera frame is widened for the same
purpose.
In some cases the extra frame is formed without capability of extension or
contraction.
The extra frame as above described is adapted for the class of cameras in which
the focussing is obtained from the back thereof but in those classes of cameras in
which the focussing is obtained from the front I connect my extra frame to the.
camera by sliding it into the grooves or guides ordinarily employed for the back
of the camera in which case the camera front is not in any way altered.
D1 : ALL
c
1000

page_text: I Fox Suew of 88 Newman Street Oxford Street in the County of Middlesex,
Manufacturer, do hereby declare the nature of the said invention for IMPROVE-
MENTS IN MEANS FOR INCREASING THE USEFULNESS OF PHOTOGRAPHIC CAMERAS,
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
The invention has for its object the construction and adaptation of means for
enabling a camera and lens of any given size to be used for working plates of
larger sizes than that ordinarily employed for the enid camera.
For this purpose I construct an addtional frame of somewhat similar character
to the body of a camera with capability of extension and contraction by means of
bellows or telescopic frame and provided with means for holding it at any required
position of extension or contraction as also for steadying the same, but generally
with no bottom board.
One end of such additional frame is provided with a frame containing or
carrying the ordinary ground glass or back for focussing and with grooves to
receive the frame containing the sensitized surface while the other end of such
extra frame is provided with a skeleton frame which is so constructed as to bo
capable of being slidden into the groove of the camera frame into which the lens
front is usually slidden.
A lens front I then slide into the grooves of the camera ordinarily used for the
back..
The opening in the skeleton frame of the additional frame is made large
enough to form no obstruction of the visual rays and if necessary the opening in
what is ordinarily used as the front of the camera frame is widened for the same
purpose.
In some cases the extra frame is formed without capability of extension, or
contraction.
The extra frame as above described is adapted for the class of cameras in which
the focussing is obtained from the back thereof but in those classes of cameras in
which the focussing is obtained from the front I connect my extra frame to the
camera by sliding it into the grooves or guides ordinarily employed for the dark
slide at the back of the camera, or by securing it by the aid of the catches
employed to hold the reversing frame in position in which case the camera front
is not in any way altered.
And in order that my said invention may be more clearly understood and readily
carried into effect, I will proceed aided by the accompanying drawings more fully
to describe the same.
DESCRIPTION OF THE DRAWINGS.
i
Figure 1 is a side elevation and Figure 2 is a plan of a photographic camera
showing one method in which I carry my invention into effect. In the above
figures the camera and its attachment are represented in position for use.
Figure 3 is a front elevation of the additional frame separately and when opened
out and Figure 4 is a cross section.
Figure 5 is a front elevation and Figure 6 is a plan of the additional frame
separately and when folded up.
.

page_text: Figure 7 is a side elevation and Figure 8.is a plan of a camera showing another
method in which I carry my invention into effect.
In all the figures like parts are marked with similar letters of reference.
I will first describe the arrangement shown in Figures 1 to 6.
A is a camera which may be of any ordinary construction, a is the front to
which the lens is applied, and a¹ is the back which carries the ordinary ground
glass for focussing and the dark frame when used apart from my invention; B is
an additional frame of somewhat similar character to the body of a camera with
capability of extension and contraction by means of bellows b or telescopic frame
and provided with folding bars o which by the aid of binding screws & enable the
additional frame B to be held firmly at any required position of extension or
contraction, and steady the same. A bar hand binding screw h¹ also assist in
steadying the frame.B.
This additional frame Bis generally made without a bottom board.
One end of such additional frame B is provided with a frame e containing or
carrying the ordinary ground glass or back for focussing and with grooves f to
receive the frame containing the sensitized surface while the other end of such
extra frame B is provided with a skeleton frame g which is so constructed as to be
capable of being slidden into the grooves a² of the camera frame A into which the
lens front is slidden when the camera is used apart from my invention.
I slide a lens front into the grooves a³ of the camera which are ordinarily used
for the back.
The opening g' in the skeleton frame g of the additional frame B is made large
enough to form no obstruction to the visual rays and if necessary the opening in
the part a which is ordinarily used as the front of the camera frame A is widened
for the same purpose.
In some cases the extra frame B is formed without capability of extension or
contraction. A bar or link is connected to one of the folding bars c and by
hooking the same over a stud c¹ fixed in the other folding bar c the additional
frame is held in its folded position.
The extra frame as above described is adapted for the class of cameras in which
the focussing is obtained from the back thereof but in those classes of cameras in
which the focussing is obtained from the front I connect the additional frame B to
the camera A as shown at Figures 7 and 8 by sliding it into the grooves or guidesj
ordinarily employed for the dark slide at the back of the camera or by securing it
by the aid of the catches employed to hold the reversing frame in position in
which cases the camera front is not in any way altered.
I would here remark that the construction of the additional frame B and the
means for fixing and steadying the same may be variously modified without
departing from the peculiar character of my invention.
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
The employment in combination with a photographic camera of an additional
frame B provided with means for adapting, fixing and steadying the same
substantially as herein shown and described and for the purpose stated.
Dated him th
T