Improvements in Photographic Cameras.
Year: 1889

page_text: Date of Application, 26th Jan., 1889
Complete Specification Left, 25th Oct., 1889-Accepted, 21st Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements in Photographic Cameras.
I, JOHN WILLIAM TURNER, of Heathfield Street Liverpool, in the County of
Lancaster, Photographic apparatus manufacturer, do hereby declare the nature of
this invention to be as follows:-
The invention relates to photographie Detective or hand cameras in which a number
of dry sensitive plates are stored, are successively submitted to the action of light,
and are then deposited in a suitable receptacle until they are required for
development.
The object is to so make such cameras that the plates are readily and easily placed
therein and removed therefrom, and are with certainty moved into the required
positions by simple and efficient mechanism.
The invention consists essentially in providing First rack or equivalent mechanism
by which the plates are fed with certainty and regularity one after the other into
position to receive the focused image and Second oscillating grippers by which the
plates are removed from the focal centre and deposited in a container or receptacle.
A sliding rack operated by a pinion answers well to feed the plates forward inter-
mittently. Each tooth of the rack acts on a plate and springs are used to assist in
moving the plates forward.
Grippers opened and closed by screw spring or equivalent mechanism and moved
in an are by means of a handle or lever are advantageously employed for removing
the used plates into the container or receptacle.
Dated this 25th day of January 1889.
Per pro J. T. KING,
J. Johnson,
Agent.
COMPLETE SPECIFICATION.
Improvements in Photographic Cameras.
1 JOHN WILLIAM TURNER of Heathfield Street Liverpool in the County of
Lancaster Photographic Apparatus 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:-
The invention relates to photographic detective or hand cameras in which a
number of dry sensitive plates are stored, are successively submitted to the action of
light, and are then deposited in a suitable receptacle until they are required for
developement.
The object is to so make such cameras that the plates are readily and easily placed
therein and removed therefrom, and are with certainty moved into the required
positions by simple and efficient mechanism.
The invention consists essentially in providing First. Rack or equivalent mechanism
by which the plates are fed with certainty and regularity one after the other into
position to receive the focused image, and Second, Oscillating grippers by which the
plates are removed from the focal centre and deposited in a container or receptacle.
A sliding rack operated by a pinion answers well to feed the plates forward inter-
mittently. Each tooth of the rack acts on a plate and springs are used to assist in
moving the plates forward.
Grippers opened and closed by screw spring or equivalent mechanism and moved in
an arc by means of a handle or lever are advantageously employed for removing the
used plates into the container or receptacle.

page_text: DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a longitudinal vertical section, and fig. 2 a transverse vertical section of a
camera under my invention. Fig. 3 is an elevation, and fig. 4 a plan of part of the
camera in detail." a is the main body of the camera, 6 is the lens holder and focusing
frame, these parts may be of any usual or suitable construction. c is a rack for
supporting a number of plate or film holders d. The rack c is free to move and to
and fro in slots e in the body of the camera. One side of the rack is provided with
teeth which take into the teeth of a pinion i. Motion is given to the pinion i by a
thumb and finger piece j. k spring catch for holding the pinioni in position and
allowing it to be turned in either direction, inclined way on which the holders d
rest. mn spring stops for retaining the front plate in focusing position. o gripper
or clip carried on a shaft p free to turn and move end wise in a bearing 7, gripper
or clip free to move endwise on the shaft p, and carried in the bearing 'the
grippers or clips are held apart by springs ss and are brought together by a screw
and nut tt. The springs reacts against an abutment u secured to the body of the
camera, the spring s reacts against an abutment secured to the shaft p.
screw t is formed on the end of the shaft p, and the nut tabuts against the clip ",
w thumb and finger piece for giving motion to the shaft p, a well in which the holders
are deposited after use.
r
The
The action is as follows:-The rack c is run back in the slots e and is fitted with
holders d, the front holder being in the position shown at d. The camera is then
focused in the usual way and the front plate is submitted to the action of the luminous
image for the desired time. The shaft p is then turned into the position shown and
the nut is turned until the holder d is tightly held between the grippers or clips r.
The shaft p is then turned into the position shown by the dotted lines so as to carry
the holder past the spring stops m n into the position shown at, d, the nut t¹ is turned
the grippers or clips are withdrawn, and the plate is allowed to fall into the well ..
The pinion is turned so as to advance the rack c the distance between two holders,
this is advantageously arranged to be one tooth of the pinion.
It will be obvious that the rack and gripper or clip mechanism may be variously
made without departing from my invention.
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 :-
First. Photographic cameras constructed substantially as herein setforth.
Second. In photographic cameras the combination of rack mechanism with gripper
appliances substantially in the manner and for the
purpose setforth.
11111 aul
Per pro J. T. KING,
W. B. Johnson,
Agent.
Per pro J. T. KING,
W. B. Johnson,
Agent.