Improvements in and relating to the Focussing Arrangement for Photographic Cameras.
Year: 1890

page_text: Date of Application, 4th June, 1890
Complete Specification Left, 19th Sept., 1890- Accepted, 25th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Focussing Arrangement for
Photographic Cameras.
I, JAMES CHAPMAN SHENSTONE, of 13 High Street, Colchester, in the County of
Essex, Chemist, do hereby declare the nature of this invention to be as follows:-
My invention relates to a device for attaching a focussing cloth to a camera, and it
has for its object, attaching the cloth in such a manner that it may be easily attached
to, or removed from the camera, and that it is so firmly attached as to need no control
on the part of the operator.
I attain this object in the following manner;-I take an ordinary focussing cloth
and on one edge I attach a clip designed to embrace the camera on the top and two
sides, just in front of the back frame or at any other convenient point. The clip may
be made in a variety of forms, and may either be made adjustable to fit a camera of
any size, or it may be made non-adjustable to fit a camera of a given size.
The clip consists essentially of a bar-adapted to lie across the top of the camera-
and of two spring arms, or their equivalents, at each end adapted to embrace the
sides of the camera.
In an adjustable clip the bar is made telescopic, or otherwise so that its length may
be varied either automatically by a spring or springs-in which case the arins at the
ends may be rigid-or by means of any suitable locking arrangement, in which case the
arms at the ends would be formed as springs. In a non-adjustable clip I make the bar of
one given length and I attach the spring arms to the end of the said bar. In all
cases I prefer to attach the arms to the bar by means of knuckle joints, or their
equivalents, so that they may be folded to lie against the bar, thus enabling the
focussing cloth to be folded up into the smallest possible space.
1000
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
Royal Courts Chambers, 70-72, Chancery Lane, London, W.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to the Focussing Arrangement for
Photographic Cameras.
I JAMES CHAPMAN SHENSTONE of 13 High Street Colchester in the County of
Essex, Chemist, 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 a clip for attaching a focussing cloth to a camera, and it
has for its object, attaching the cloth in such a manner that it may be easily attached
to, or removed from, the camera, and that it is so firmly attached as to need no
control on the part of the operator.
11ted be the necompanying drawing in
COMPLETE SPECIFICATION.
Improvements in and relating to the Focussing Arrangement for
Photographic Cameras.
I JAMES CHAPMAN SHENSTONE of 13 High Street Colchester in the County of
Essex, Chemist, 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 a clip for attaching a focussing cloth to a camera, and it
has for its object, attaching the cloth in such a manner that it may be easily attached
to, or removed from, the camera, and that it is so firmly attached as to need no
control on the part of the operator.
I attain this and in the Banner illustrated by the accompanying drawing in
which
Figure 1 is a view in end elevation of my clip,
Figure 2 is a view in plan thereof, and
Figure 3 is a view in end elevation showing the clip expanded.
Throughout these views similar parts are marked with like letters of reference.
I take an ordinary focussing cloth-not shown in the drawing-and to one edge

page_text: of it I attach a clip adapted to embrace the camera on the top and on two sides,
preferably just in front of the back frame or at any other convenient point. The
clip may be made in a variety of forms and may either be made adjustable to fit a
camera of any size, or it may be made non-adjustable to fit a camera of a given
size.
The clip consists essentially of a bar A, adapted to lie across the top of the
camera, and of two arms B B or their equivalents at each end, adapted to embrace
the sides of the camera.
The bar A may be made either in one piece to fit a camera of a given size-in
which case the arms B, B, would take the form of springs or it may be made in
two parts capable of being adjusted to vary its length in the manner illustrated by
the accompanying drawing, or in any other convenient manner, thereby adapting the
clip to fit cameras of any size. When the clip is made with an adjustable bar A
the arms B, B, may be made rigid with the ends thereof if desired, and the width of
the clip may be either automatically regulated by means of a suitable spring C, acting
directly or indirectly between the ends of the two parts of the bar A, or it may be
regulated by hand and the two parts locked together by a set screw or its equivalent,
or the adjustment may be made by a travelling screw, in which cases the arms B, B,
would preferably take the form of springs.
For convenience in folding the focussing cloth, I prefer to attach the arms B, B,
to the bar A by means of knuckle joints a, a, or their equivalents, so that they may
be folded to lie against the bar A as shown by Figure 3 of the accompanying
drawing, and thus enable the focussing cloth to be folded to occupy the smallest
possible space.
In using jointed arms B, B, in conjunction with an adjustable bar A, I attach the
spring C to the arms B, B, in close proximity to the joints a, a, so that it may serve
the double purpose of contracting the length of the bar A and giving elasticity to
the arms B B. The spring C may be either a piece of rubber as shown in the
accompanying drawing, or a coil spring.
I wish it to be particularly understood that I do not limit myself to the exact details.
of construction herein set forth and shown in the accompanying drawing, but hold
myself at liberty to make such alterations and changes as fairly fall within the spirit
and scope of my. invention.
Having now particularly described and ascertained the nature of my said invention
I declare that what I claim is
1. The clip for attaching a focussing cloth to a photographic camera, constructed,
arranged, and operating as set forth.
2. The combination with a focussing cloth, of a clip connected to one edge of the
said cloth and adapted to confine the said cloth to three sides of a camera, as and for
the purpose set forth.
3. In a clip for attaching a focussing cloth to a photographic camera the combina-
tion of the rigid bar A, & of the spring arms B, B, rigidly attached to the ends of
the bar A as-set forth.
:.
4. In a clip for attaching a focussing cloth to a photographic camera, the combina.
tion of the adjustable bar A, of the arms B, B, rigidly attached to the ends of the two
parts of the bar A, and of the spring C, all combined, arranged, and operating, as
and for the purpose set forth.
5. In a clip for attaching a focussing cloth to a photographic camera, the com-
bination to the bar A formed in two parts adapted to telescope with respect to each
other and to be locked after adjustment by a set screw or its equivalent, and of the
arms B, B, carried by the two parts of the bar A, all constructed, arranged, &
operating, as and for the purpose set forth.
6. In a clip for attaching a focussing cloth to a photographic camera, the combina-
tion of the bar A formed in two parts, adapted to telescope with respect to one
another and to be adjusted by means of a travelling screw, and of the arms B,,B,
carried by the two parts of the said bar, as set forth.

page_text: 7. In a clip for attaching a focussing cloth to a photographic camera, the com-
bination of the rigid bar A, of the spring arms B, B, connected to the ends of the A
by means of knuckle joints or their equivalents, as and for the purpose set forth.
8. In a clip for attaching a focussing cloth to a photographic camera, the com-
bination of the adjustable bar A, of the arms B, B, connected to the ends of the
two parts of the bar A by means of knuckle joints or their equivalents, and of the
spring C, all combined arranged and operating as and for the purpose set forth.
Dated this 19th day of September 1890.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
Royal Courts Chambers, 70-72, Chancery Lane, London, W.C.,
Agent for the Applicant.