Improvements in Photographic Printing Frames, which Frames are also applicable to other purposes.
Year: 1892

page_text: Date of Application, 30th Apr., 1892
Complete Specification Left, 10th Jan., 1893-Accepted, 25th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Photographic Printing Frames, which Frames are
also applicable to other purposes.
We, CONRAD BECK, Optician, and FREDERICK OATLEY BYNOE, Manager of
Photographic Department, both of 68 Cornhill, in the City of London, do hereby
declare the nature of this invention to be as follows :—
The invention relates primarily to photographic printing frames, and the
improvements consist of means whereby the negative and the print are held along
one edge, and the entire surface capable of being completely exposed and
examined without fear of shifting the said negative and print in relation to
each other.
For this purpose we form the frame preferably of metal having raised sides and
an open front end to enable the glass to be readily placed in position.
Along the back end of the frame is fixed a spring clipping jaw of suitable length
and provided with a lever handle, by which it can be readily operated when it is
desired to insert and release the negative and printing paper, both of which have
one of their edges inserted under the spring clip. On the clip hinge pin is mounted
a flat metal spring carrier, to which the pressure board is fixed, and the front end
of said carrier is extended and formed as a spring catch to catch on to the front
edge of the frame.
The said carrier is divided and formed so as to bear on the centre and along the
sides of the back board with an equal pressure.
A frame constructed as above described can also be used for transparent slates
and for copying drawings.
The frame can be formed by punching a sheet of metal with the necessary
opening and flanges or sides, as also with perforated raised lugs forming parts of
the back board carrier hinge.
The spring carrier is also formed by punching and bending a sheet of metal to
the required shape and with perforated lugs to form the second parts of the hinge.
Dated this 20th do of A1000
CONRAD BECA,
F. O. BYNOE,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Photographic Printing Frames, which Frames are
also applicable to other purposes.
We, CONRAD BECK, Optician, and FREDERICK OATLEY BYNOE, Manager
of Photographic Department, both of 68 Cornhill in the City of London, 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 primarily to photographic printing frames and the
improvements consist of means whereby the negative and the print are held
along one edge and the entire surface capable of being completely exposed and
examined without fear of shifting the said negative and print in relation to
each other

page_text: For this purpose we form the frame preferably of metal having raised sides and
an open front end to enable the glass to be readily placed in position.
Along the back end of the frame is fixed a spring clipping jaw of suitable
length and provided with a lever handle by which it can be readily operated when
it is desired to insert and release the negative and printing paper both of which have
one of their edges inserted under the spring clip. On the clip hinge pin is mounted
a flat metal spring carrier to which the pressure board is fixed and the front end of
said carrier is extended and formed as a spring catch to catch on to the front edge
of the frame.
The said carrier is divided and formed so as to bear on the centre of the back
board and thereby produce an equal pressure thereon.
A frame constructed as above described can also be used for transparent slates
and for copying drawings.
The frame can be formed by punching a sheet of metal with the necessary
opening and flanges or sides as also with perforated raised lugs forming parts of
the backboard carrier hinge.
The spring carrier is also formed by punching and bending a sheet of metal to
the required shape and with perforated lugs to form the second parts of the hinge.
And in order that the said invention may be more clearly understood and readily
carried into effect we will proceed aided by the accompanying drawings more fully
to describe the same.
Figure 1 is a front view, Figure 2 is a back view and Figure 3. is an end view
of the improved photographic printing frame.
Figure 4 is a side view of same partly in section.
Figure 5 is a section of the front plate taken on the line 1-1 of Figure 1.
Figure 6 is a section of the front plate taken on the line 2-2 of Figure 1.
Figures 7 and 8 are respectively an edge view and a plan of the clipping jaw
separately.
In all the figures like parts are indicated by similar letters of reference.
The frame a is preferably formed of metal having raised sides a¹ and an
open front end a² to enable the glass or negative to be readily placed in
position.
Along the back end of the frame is fixed a spring clipping jaw c of suitable
length and provided with a lever handle c¹ by which it can be readily operated
when it is desired to insert and release the negative b and printing paper, both of
which have one of their edges inserted under the spring clip c. This spring clipping
jaw is preferably stamped out of sheet metal.
It is provided with a serrated edge in order to hold the paper firmly and has
two perforated hinge lugs c³.
The front frame a is formed with two perforated hinge lugs a³ which carry a
hinge pin a* and upon which is mounted the said spring clip c by means of the
lugs c Two coiled springs c are also mounted upon the hinge pin a*.
Each of these springs has one member c bearing upon the back of the front
frame a and the other member e bearing against the back of the spring clip c and
tending to close the serrated jaw against the printing paper and negative.
On the clip hinge-pin a' is mounted a flat metal spring carrier d by means of
lugs d¹ and to which the pressure board e is fixed by screws or in any other con-
venient manner. The front end of said carrier d is extended and formed as a
spring catch d² to catch onto the front edge of the frame a.
The said spring carrier is divided and formed so as to bear on the centre of the
back board and thereby cause an equal pressure to be exerted by the same upon
every part of the negative.
The frame a can be formed by punching a sheet of metal with the necessary
opening and flanges or sides a' as also with perforated raised lugs a³ forming parts
of the spring clip hinge and back board carrier-hinge.
The spring clip e is also formed by punching and bending a sheet of metal
to the required shape and with the perforated lugs and the spring carrier d is

page_text: likewise formed by punching and bending a sheet of metal to the required shape
and with the perforated luge d'.
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 :-
1. The combination in a photographic printing or other frame, of the frame a, a
spring clip pivotted to one end of said frame, a pressure board fitting in said frame
and a spring carrier carrying the pressure board, the spring clip and carrier being
both mounted on the same hinge pin substantially as herein shown and described.
2. A photographic printing or other frame constructed with a front a having two
perforated lugs a through which is passed a hinge-pin a carrying a spring clip e
provided with a lever handle c' and also carrying a spring carrier d on which the
pressure board e is fixed said spring carrier & being provided with a catch d³ to
catch over the front edge of the frame a substantially as herein shown and
described.
3. In a photographic printing or other frame, the combination of a stamped
metal frame a, to one end of which are hinged a stamped metal spring clip cand a
stamped metal spring carrier d to which latter the pressure board e is fixed sub-
stantially as herein shown and described and for the purpose stated.
4. In a photographic printing or other frame the peculiar combination and
arrangement of parts, substantially as herein shown and described and for the
purpose stated.
D1 T.
A1000
CONRAD BECK,
FREDERICK OATLEY BYNOE,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.