Year: 1886

page_text: Date of Application, 27th May, 1886.
Complete Left, 28th Feb., 1887.
Complete Accepted, 29th Mar., 1887.
I, 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:-
My invention relates to improvements in portable extending cameras by which
compactness is obtained when the camera is closed.
One part of my improvements relates to an improved method of fixing the camera
front in position when set up by means of a special arrangement of link motion which
forms a swing front without extra apparatus.
For this purpose a lever arm is connected to one side of the tail board so as to
move on a pin joint. The lower end of the lever arm is formed with a quadrant
which can be fixed to the tail board by a set screw. The upper end of the lever arm
is connected to the side of the camera front by a jointed link which holds it in position
when set up.
By this means the camera can be opened out and set up in a short time with
great case.
Another part of my improvements relates to the method of clamping the camera
back to the sliding board and in allowing side swing to the back without extra
apparatus for the purpose.
According to this part of my improvements the rack and focusing screw are placed
in the centre of the sliding board the axis of the pinion being vertical and the body is
held in position by means of a cam or cams actuated by a lever or levers let into a
recess in the side or sides of the camera back the cam or cams acting to press a spring
or springs down on to the upper side of the metal slide or slides thus clamping and
holding the camera back in position when focused.
The looseness of the fitting of the camera back on the slide is such that it admits of
side swing being given to the back without any extra apparatus being required for
the purpose.

page_text: Another part of my improvements consists in constructing the tail board in a
special manner so as to allow the tripod head and focusing screw to be flush the tripod
head being housed within the tail board.
The improved arrangement and combination of the parts forms a camera of long or
short focus and the forward and backward swing of the camera back can be the same
as in ordinary cameras.

page_text: 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 :-
My invention relates to improvements in portable extending cameras by which
compactness is obtained when the camera is closed.
One part of my improvements relates to an iniproved method of fixing the camera
front in position when set up by means of a special arrangement of link motion which
forms a swing front without extra apparatus.
For this purpose a lever arm is connected to one side of the tail-board so as to
move on a pin joint. The lower end of the lever arm is formed with a quadrant
which can he fixed to the tail board by a set screw. The upper end of the lever arm
is connected to the side of the camera front by a jointed link which holds it in position
when set up.
By this means the camera can be opened out and set up in a short time with
great ease.
Another part of my improvements relates to the method of clamping the camera
back to the sliding board and in allowing side swing to the back without extra
apparatus for the purpose.
According to this part of my improvements the rack and focusing screw are placed
in the centre of the sliding board the axis of the pinion being vertical and the body is
held in position by means of a cam or cams actuated by a lever or levers let into a
recess in the side or sides of the camera back the cam or cams acting to press a spring
or springs down on to the upper side of the metal slide or slides thus clamping and
holding the camera back in position when focused.
The looseness of the fitting of the camera back on the slide is such that it admits of
side swing being given to the back without any extra apparatus being required for
the purpose.
Another part of my improvements consists in constructing the tail board in a
special manner so as to allow the tripod head and focusing screw to be flush the tripod
head being housed within the tail board.
The improved arrangement and combination of the parts forms a camera of long or
short focus and the forward and backward swing of the camera back can be the same
as in ordinary cameras.
And in order that my invention may be clearly understood and readily carried into
practice I will proceed to describe the drawings hereto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shews a side view of a portable camera partly extended and Figure 2
shews a side view thereof closed having my improved link motion applied thereto for
fixing the camera front in position when set up.
a is a lever arm moving on a pin joint a fixed in the tail-board 6 of the camera,
a is a auadrant formed on the lower end of the lever a which can he fired in M

page_text: board in any desired position by the set screw a³. The upper end of the lever a is
connected to the side of the camera front A by the connecting link a; as shown.
I will now describe my improved method of clamping the camera back to the
sliding board when in proper position. Figure 3 is a vertical section taken through
the sliding board and base board 6 and Figure 4 is an underside view of camera back B
showing the improved means I employ to clamp the parts together.
c, is the focusing screw and pinion and d the rack plate and sliding board having a
metal plate d' fixed along the centre with undercut edges for the edges of side plates
on the camera back B to slide under.
e is a lever fixed on the end of the axis e¹ supported in bearings on the bottom of
the camera back B and e² is a cam on the axis which when moved round by the
lever e presses the spring e³ down on to the surface of the central plate and thus
holds the camera body firmly in the position in which it has been adjusted on the
sliding board. Figure 5 shows an enlarged section taken through the axis el cam
surface e and spring e.
There is sufficient play between the sliding. plates to admit of the camera being.
swung sideways and set at angles right or left on the sliding board d.
Figure 6 shows an underside view of the tail or base board 6 and Figure 7 a
section of same on a larger scale showing the tripod head and set screw and nut f
housed or let into a recess so as to be flush with the underside of the base board b.
In some cases the tripod head may be dispensed with and affixed to the tripod
stand in the ordinary manner.
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 method of fixing the camera front A in any required position by
means of the quadrant lever a quadrant a set screw a³ and link a arranged to act
substantially in the manner and for the purpose herein before described and represented
in the drawings annexed.
2. The improved method of clamping the camera back B when adjusted in position
to the sliding board by the lever e, axis e¹ cam e² and spring ea or by equivalent
means substantially in the manner and for the purpose herein before described and
represented in the drawings hereto annexed.
in
3. The improved method of constructing and arranging the tripod head
combination with the tail or base board b so that the under surface of the parts may
be flush with one another substantially as and for the purpose herein before described
and represented in the drawings hereto annexed.
4. The improved general arrangement construction and combination of the parts of
Photographic cameras arranged to act substantially in the manner and for the
purposes herein before described and represented in the drawings annexed.
Dated this 2011 1
100
TONGUE & BIRKBECK,
34, Southampton Buildings, London, W.C.,
Agents for the Patentee.