A Process and Apparatus for Flattening Mounted Photographs.
Year: 1895

page_text: Date of Application, 12th July, 1895
Complete Specification Left, 23rd Mar., 1896-Accepted, 25th Apr., 1896
PROVISIONAL SPECIFICATION.
A Process and Apparatus for Flattening Mounted Photographs.
I, EUGENE RENARD, of 95 Boulevard Beaumarchais, Paris, France, do hereby
declare the nature of this invention to be as follows:-
When a photograph is mounted on card, its shrinkage causes the card to present.
a concave curvature on the face, sometimes in the length, sometimes in the breadth,.
sometimes in both.
My invention relates to means of removing this curvature so as to render the
face of the photograph flat.
For this purpose I provide boards convex some longitudinally some transversely
some both ways and on one of these of suitable form I place a mounted photograph
or a number of these, their convexity facing the convexity of the board. I clamp.
the whole within a rectangular frame which is made of wood with a metal rim fixed
on its upper face, this rim projecting inwards all round.
The mounted photographs being thus clamped between the convex board under-
them and the flat rim above their margins, are flattened, and while thus clamped
are kept a few minutes in a hot chamber whereby the flattening is rendered.
permanent.
Dated this 12th day of July 1895.
ABEL & IMRAY,
Agents for the Applicant.
A Process and Apparatus for Flattening Mounted Photographs.
I, EUGENE RENARD, of 95 Boulevard Beaumarchais, Paris, France, 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 :-
When a photograph is mounted on card, its shrinkage causes the card to present.
a concave curvature on the face, sometimes in the length, sometimes in the breadth,.
sometimes in both.
My invention relates to means of removing this curvature so as to render the
face of the photograph flat.
For this purpose I provide boards, convex, some longitudinally some transversely
some both ways, and on one of these of suitable form I place a mounted photo--
graph or a number of these, their convexity facing the convexity of the board.
By means of screws or other suitable clamps I clamp the whole within a rect.
angular frame which is made of wood with a metal rim fixed on its upper face, this..
rim projecting inwards all round.
The mounted photographs being thus clamped between the convex board under
them and the flat rim above their margins, are flattened, and while thus.
clamped are kept a few minutes in a hot chamber whereby the flattening is
rendered permanent.
As shewn in Fig. 2 the card is curved in the direction of its length a b, being.
straight in the transverse direction cd; in Fig. 3 it is transversely curved and.

page_text: longitudinally straight, whilst in Fig. 4 it is curved in both directions. The
boards C used in these cases are shaped as shewn respectively by Figs. 5, 6
and 7, and the card or a number of cards similarly curved are clamped in a
frame of corresponding form such as is shewn in Fig. 1 in perspective view,
Fig. 1 being a plan, Fig. 1B a transverse section on the line 3-4, and Fig. 1°
a longitudinal section on the line 1-2 of Fig. 14. In these figures A is the
wooden frame and B is the metal rim which is secured to A by screws or
otherwise, holding the cards tightly pressed to the board C while they are
heated.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The herein described method of flattening a mounted photograph by heating
it while it is clamped on a board of opposite curvature.
2. For operating as above set forth, the combination of a suitably curved board,
wooden frame and metal rim with suitable clamps substantially as described.
Dated this 23rd day of March 1896.
ABEL & IMRAY,
Agents for the Applicant.