An Improvement in Hand and other Cameras.
Year: 1890

page_text: Date of Application, 25th Nov., 1890-Accepted, 17th Jan.. 1891
COMPLETE SPECIFICATION,
An Improvement in Hand and other Cameras.
We, WALTER HORACE THOMPSON 22 Edmund Place, Aldersgate Street London E.C.
Wholesale Optician & Photographic Apparatus Manufacturer and PHILLIP WILLIAM
HUSBANDS 29 Baroness Road Hackney Road, London, Photographic Apparatus Maker,
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:-
Our improvement in hand or other cameras consists in the use of a box containing
one grooved plate holder or travelling inner body with vertical grooves divided in the
centre by a horizontal groove and with sliding partitions attached to each end of the
outside box dividing the unexposed from the exposed plates or films. The grooved
plate holder is worked by a pair of racks and pinion fitted at the bottom of the
grooved plate holder and attached to the outside box.
The pinion to have on its end either a square to be used with a key or a milled
head on turning which the grooved plate holder containing the plates or films (each
in a suitable carrier) advances and on reaching a given line a plate or film drops
from the upper part of the grooved plate holder to the lower part. As the grooved
plate holder travels forward the back partition fitted in horizontal groove of grooved
plate holder and attached to back of outside box allows the exposed plate to drop and
by the same action the front partition attached to front of outside box covers the
same.
The camera takes the form of a box of varied shape as may be found most con-
venient and can be covered or not with leather or other material to suit the tastes of
the users and either carried by a strap or handle or the like.
Our invention can be more particularly ascertained by reference to the accompanying
drawings.
Fig. 1. A A A being the grooved plate holder or travelling inner body showing the
vertical grooves B B B B B BBBBBBB in which the plates or films are
put and the horizontal grooves C. C. in which are fitted the sliding partitions D. D.
and E. E.
Fig. II is a side elevation showing the grooved plate holder A A A A with
unexposed and exposed plates or films, showing one plate or film in the act of
dropping from the upper to lower part of the grooved plate holder.
The sliding
partitions D and E. being attached to the outside box F. F. F. F. remaining
stationary, the grooved plate holder A A A A moved forward by means of pinion
working in rack H. H allows each plate or film to drop from the upper to lower
part of grooved plate holder in succession on arriving at the given line J.
Letter K is side section of grooved plate holder showing vertical grooves.
Letter Lis side elevation of grooved plate holder showing horizontal grooves.
Fig. III shows the pinion turned by head letter G.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
The use of one grooved plate holder or travelling inner body with sliding partitions
attached to each end of the outside box dropping plates or films from upper part to
lower and worked by rack and pinion as described.
Dated this Twenty-fifth day of November Eighteen hundred and ninety.