Improvements in the Use of Partial Ball 'and Socket Joints for the Adjustment of Photographic 'Cameras on their Legs or Stands.
Year: 1886

page_text: Date of Application, 24th Apr., 1886.
Complete Left, 17th Jan., 1887.
Complete Accepted, 18th Feb., 1887.
Improvements in the Use of Partial Ball 'and Socket Joints for the
Adjustment of Photographic 'Cameras on their Legs or Stands. .
CHARLES PUMPHREY Manufacturer of Regent Works Herbert Road Small Heath
Birmingham do hereby declare the nature of this invention to be as follows:-
One form is that of a hollow cup with rim or "flange which is attached to the
camera the outside of the cup rests in a ring on the top of the stand. A circular
plate inside the cup is the head of a screw which by means of a nut secures it firmly
in any position.
I
Another form is that a nearly complete sphere is made part of the top of the stand
and this is grasped by means of one or two screws between two partial sockets, one of
which need be only narrow the other must be extended so as to be attached to the
camera, and if that attachment is at an angle of about forty five degrees the adjustment
from horizontal to perpendicular is easy.
CHARLES PUMPHREY.

page_text: Adjustment of Photographic Cameras on their Legs or Stands.
I CHARLES PUMPHREY of Regent Works Herbert Road Small Heath Birmingham
Manufacturer 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 :—
One form is shewn on the drawing at A partly in section, it consists of a hollow
cup with a flange (a) which is used to attach it to the camera-the outer part rests
on a circular rim (b) which is part of the head to which the legs are jointed, inside
the cup is the head of a screwed pin which passes through the head and is secured by
a nut the pin is prevented from turning round by being squared or feathered.
Another form is shewn by two views at B; a nearly complete spliere is attached to
either the head, or the camera and is grasped between two partial sockets (cd) (c) is
more extensive than (d) as it is desirable that it should rest on the top of the sphere,
the other (d) much smaller is placed at an angle of about 45 degrees, the sphere is
grasped between these by two screws, or one end being hinged, or otherwise jointed,
by one screw or other fastening at the other end. If preferred plates (/) with
.circular holes may be used in the place of the sockets c, & d, as is shewn at C.
Another form is shewn at D in which the sphere is grasped between two plates (y g)
with circular holes in them; by nicans of one screw (h) or one of the plates may be
fixed, and the other pressed towards it by the screw (h) or by a screw made to act in
the opposite direction on a tail opposite to that drawn.
The parts described as to be attached to the camera may be attached to the head,
and then those described as part of or attached to the head will be attached to the
camera.
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 1 claim is :
1. The plan of using a hollow cup of the form of part of a hollow sphere, and
grasping it between the inner and outer surfaces.
2. The use of such forms of annular or partial sockets as I have described or
drawn to grasp a sphere which is attached to either a camera, or in any position to
the head of the stand.
CHARLES PUMPHREY,
Applicant.