Improvements in or relating to Photographic Cameras.
Year: 1892

page_text: Date of Application, 13th Feb., 1892
Complete Specification Left, 29th Sept., 1892-Accepted, 3rd Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in or relating to Photographic Cameras.
I, GRIFFITH DAVID HUGHES, of Cheadle Hulme, in the County of Chester,
Congregational Minister, do hereby declare the nature of this invention to be as
follows:-
This invention relates to apparatus I have designed for photographic cameras, for
holding a number of prepared plates to receive the negatives, one of which will be
presented at a time to receive the picture.
It consists essentially in the combination with the apparatus of a rotating holder
or carrier comprising a number of sheaths or receptacles or slides in which the
photograph prepared plate or other object can be placed, a spring barrel or other
motor by which these are rotated and a catch or clip which will release one of the
sheaths or receptacles at a time whilst retaining, or preventing a forward movement
of the others.
In carrying out the invention in a suitable position in the casing which surrounds
or contains the apparatus I affix a spring barrel or other rotating mechanism
capable, when set, of a continuous movement for several revolutions. Affixed to
or carried by this barrel radiating from its centre are a number of sheaths slides or
receptacles to receive cards, plates, or other flat objects which can be rotated round
the centre of the drum.
The sheaths, slides or receptacles which carry the objects are preferably loose on
the spring barrel and free to move about the barrel centre independently of any
movement of the spring barrel. In addition to these the barrel carries a projecting
finger or catch which comes in contact with or engages with the receptacles or
objects and carries them round.
A spring catch or other clip is affixed to the frame to retain the object or plate
at the desired position to yield the image or receive the impression and which
when moved will release one at a time which then drops forward of its own gravity.
A catch in the form of an escapement or other similar device may be employed for
the purpose.
The sheaths or receptacles for the plates may rotate in a cylindrical chamber
with a packing of velvet or other light tight material between the tops and sides and
an opaque back of blackened wood or other material may be applied to each sheath
or receptacle to prevent the passage of light through from one plate to another, or
to prevent light reaching a plate after it had been exposed.
Dated this 12th day of February 1892.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in or relating to Photographic Cameras.
1, Griffith DAVID HUGHES of Cheadle Hulme, in the County of Chester,
0 Congregational Minister 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 relates to photographic apparatus or cameras and is designed with
the object of providing in such apparatus a carrier or holder to hold a number of
15 prepared plates to receive the negatives one of which will be presented at a time to
eive the picture

page_text: It consists essentially in the combination with the apparatus of a rotating or
movable holder or carrier comprising a number of sheaths or receptacles or slides in
which the photographic prepared plate or other object can be placed, a spring barrel
or other movable appliance by which these are rotated and a catch or clip which will
release one of the sheaths or receptacles at a time whilst retaining, or preventing a
forward movement of the others.
The invention will be fully described with reference to the accompanying
drawings in which as an example it is shown as applied to a hand or detective-
camera.
Fig. 1. longitudinal sectional elevation.
Fig. 2. transverse sectional elevation.
Fig. 3. side elevation of part of camera.
:
Fig. 4. side elevation partly in section showing a modified form of the invention.
The case A forming the camera, the lens B, the shutter C and the mechanism D
by which the lens B is moved backwards and forwards for focusing the object are
all constructed in any ordinary or convenient way either as shown or in any other
way commonly employed in the construction of hand or other cameras.
At the end of the case A of the camera or in other suitable position I place a
rotating holder or support E capable of being moved or rotated about its centre.
To the holder or supporting barrel E are loosely attached or connected a number of
sheaths slides or receptacles F to receive and carry a corresponding number of plates
cards or other flat objects G sensitised or prepared in the usual way for photographic
purposes.
The rotating holder or carrier E I at present prefer to make with a central shaft e
to which at each end is affixed a plate e¹ which carry a number of wires or rods ell
forming a barrel or part of a barrel as shown in Figs. 1 and 2.
The sheaths or receptacles F which carry the prepared plates G are loosely
attached to the holder or support E so as to be free to move about the centre of the
supporting barrel independently of any movement of the holder itself. This I effect
by hinging the sheaths F on the wires e¹¹.
Instead of attaching the rods e" to which the sheaths F are hinged to rigid end
plates they may be carried by an endless chain or flexible band g passed round
wheels or rollers glas shown in Fig. 4. Or they may be hinged or loosely attached
to the periphery of a drum or other mechanism whereby the desired movement
may be obtained.
When placed in position in the camera the sheaths F carrying the plates rest
against and are retained by a catch or clip H attached to the case A from which
they are released one at a time, each sheath when released dropping forward of its
own gravity. The sheaths are released from or drawn out of contact with the
catch H by the rotation of the holder E.
I at present prefer to arrange the sheaths F before the plates are exposed in a
horizontal or approximately horizontal position resting upon and supported in that
position by the catch H each plate dropping forward into a vertical position to
receive the impression. It is however obvious that the sheaths may first be
arranged in a vertical position and be retained in that position to receive the
impression by a catch similar to H subsequently dropping forward into a horizontal
position. (This position will be clearly indicated by turning the drawing round
until the end is horizontal.) I consider the arrangement shown in the drawings
the best as the plates are less likely to be affected by the light entering the camera
before being exposed.
The catch H may be hinged or pivoted at to allow of the free movement of
the sheaths back again when desired.
The sheaths F are formed of sheet metal or wood or other material with an
opaque back to prevent the passage of light through them. The front of the
sheath is formed with grooved edges into which the plates slide. These grooves
may be formed by turning over the edges or otherwise. The plates are preferably
inserted from the sides so as not to be liable to slip out when.depending in a

page_text: vertical position. The sheaths may however be formed so that the plate can be
inserted from the front edge with a spring or its equivalent to hold them in position.
The holder E is rotated as desired by a knob or lever I placed outside the
camera. The knob or lever I is provided with a notched plate or disc K with
the notches k in which a pawl or lever L engages to prevent any movement of the
holder E when not desired. A pointer M extending from the plate K indicates on
a curved plate or quadrant N the position of the sheaths F. It is evident that
instead of the notches in the disc K with a pawl or lever to engage therewith a
finger or lever in the position of the pointer M may engage with holes or notches
in the curved plate or quadrant but I prefer the arrangement shown.
The sheaths F may be turned back and lifted again into position on the catch H
by the loose depending arın O operated by the knob or lever P attached to the
sleeve
p.
The sheaths F are prevented vibrating or swinging when they fall forward by
the spring R at the back and the spring catch at the front.
In another modification or arrangement the rods or wires which carry the
sheaths F may be guided in the direction they are desired to travel by stationary
guides placed at each side of the camera. The guides are in pairs placed one at
each side of the centre approaching each other to form a V and the rods instead of
being attached to the movable holder E may be moved along the guides by arms
radiating from the central spindle the sheaths moving forward in succession as the
spindle is moved and dropping from the horizontal to the vertical plane.
It is evident that the sheaths or carriers F for the plates may rotate in a
cylindrical chamber and the holder E make a complete revolution but such an
arrangement would only be suitable for a large apparatus wherein a large amount of
space was available.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I am aware that a number of
sensitised plates have been carried in sheaths attached to endless flexible bands
passing over a pair of rollers and such does not constitute my invention but I
declare that what I claim is :-
1. A rotating carrier or holder for a number of sensitised plates for a photo-
graphic camera comprised of a number of sheaths loosely pivoted to the periphery
of a rotating barrel and held in position when not exposed by a catch and from
which as the barrel is rotated they are released or displaced singly and move
forward in succession at each movement exposing a fresh plate and withdrawing
the previously exposed plate from the field of light substantially as described.
2. The combination with a photographic apparatus of a holder or carrier for a
number of prepared plates or other sensitised objects comprised of a number of
sheaths in which the plates are placed pivoted loosely by a wire or rod attached to
each on a rotating or movable support so as to have an independent movement and
provided with a catch by which they are held in position and from which they are
released by the movement of the holder, dropping forward in succession of their
own gravity from a horizontal to a vertical plane (or vice versa as arranged)
substantially as described and shown.
3. A photographic camera provided with a holder or carrier for a number of
plates constructed substantially as described and shown with reference to Figs. 1,.
2 and 3 or to Fig. 4. of the accompanying drawings.
Dated this 28th day of September 1892.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents..