Improvements in Dishes for Photographic Purposes.
Year: 1895

page_text: Date of Application, 18th Oct., 1895
Complete Specification Lelt, 16th July, 1896-Accepted, 12th Sept., 1896
PROVISIONAL SPECIFICATION.
Improvements in Dishes for Photographic Purposes.
I, EMILE LÉON CONSTANS LAMBERT, of 6 Rue du Pot d'Etain, Boulogne-
sur-Mer, in the Republic of France, Photographer, do hereby declare the nature
of this invention to be as follows:-
This invention relates to improvements in invertible photographic dishes or
baths permitting of the development or other treatment of photographic platos
without the possibility of any of the liquid escaping from the dish or bath oven if
the latter be turned on end or on its side for watching the appearance of the.
image upon the plate, or even upside down, and also permitting development
without fear of soiling the hands by the developing liquid and without having to
touch the plate until after the developing operation is completed.
My improved bath or dish comprisos principally a frame or base of wood or any
other suitable material, provided at its bottom with a rebate serving to receive a
glass plate forming the transparent bottom of the dish or bath; this glass plate,
upon which the photographic plate rests, is provided with a recess, in which is
located a hook on the end of a rod mounted in guides fixed upon the interior wall
of the turned over edge forming the cover of the bath or dish; these turned over
edges of aluminium, enamelled sheet metal, celluloid, gutta percha or any other
Euitable material may be of various shapes, and may be fixed upon the base of
the bath in any suitable manner so na to ensure a water tight joint in the bath.
The said base may sometimes be made integral with the curved edges of the dish,
or bath and the glass plate may be without a recess; in this case the aforesaid
hook is located in a hollow provided in one of the walls of the dish, and the rod
carrying the hook is held in place by a small claw fixed in any suitable manner on
the dish or bath.
The base is provided with a channel for emptying the liquid, the exterior,
orifice of which channel is closed by a stopper or washer of indiarubber held in
place by the action of a spring pivotted upon the dish or bath.
The channel for emptying the liquid may of course be arranged at any suitable
place, for example, at the upper part of the edges of the basin and may be closed
by a screw stopper.
From the preceding it is evident, that the liquid contained in the dish cannot
be spilled outside the same whatever the position of the dish may be, as tho liquid
will always flow into the chamber or recess formed by the turned over edges of the
dish, even when the dish is turned upside down.
The photographic plate resting upon the glass base of the dish, will be main-
tained in contact with the same by suction, and therefore the dish may be placed
vertically in order to watch, by transmitted light, the developinent of the image
without having to withdraw the photographic plate from thọ dish and without fear
of spilling the developing liquid.
After the developing operation is finished, the photographic plate is removed
from the basin, for example, by means of the hooked rod aforesaid by drawing the
same upwards so that its hook will lift the plate, or by any other suitable
mechanism, without the fingers having to come into contact with the liquid, during
the whole operation.

page_text: The forms, dimensions, details and materials employed for the construction of
my improved dishes may, of course vary, without departing from the spirit of my
invention.
Dated this 18th day of October 1895.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: be without a recess d; in this case when not in use the aforesaid hook is located
in a hollow gl provided in one of the walls of the dish, and the rol / carrying the
hook is held in place by a small claw n fixed in any suitable manner on the dish or
bath as shown in Figures 11 and 12. When required for use the rod is of
course removed and is employed in a similar mauner to the device shown in
Figs. 1, 2 and 6.
The base a is provided with a channel i for emptying the liquid, the exterior
orifice of which channel is closed by a stopper or washer of indiarubber k held
in place by the action of a spring / pivotted upon the dish or bath by means of a
screw m.
Figure 6 shows in full lines the position of the stopper, closing the discharge
opening for the liquid contained in the bath, and in dotted lines, this same stopper
during the discharge of the liquid. The channel for emptying the liquid may of
course be arranged at any suitable place, for example, at the upper part of the
edges of the basin and may be closed by a screw stopper.
From the preceding it is evident, that the liquid contained in the dish cannot be
spilled outside the same whatever position of the dish may be, as the liquid will
always flow into the chamber or recess formed by the turned over edges of the
dish h, even when the dish is turned upside down.
The photographic plate a resting upon the glass base 6 of the dish, will be
maintained in contact with the same by suction, and therefore the dish may be
placed vertically in order to watch, by transmitted light, the development of the
image without having to withdraw the photographic plate from the dish and
without fear of spilling the developing liquid.
After the developing operation is finished, the photographic plate is removed
from the basin, for example, by means of the hooked rod aforesaid by drawing
the same upwards, so that its hook e will lift the plate, or by any other
Buitable mechanism, for example, such as represented in Figures 11 and 12,
without the fingers having to come into contact with the liquid, during the whole
operation.
The forms, dimensions, details and materials employed for the construction of
my improved dishes may, of course vary, without departing from the spirit of my
invention,
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what I
olaim is :-
The improved invertible dish or bath for photographic purposes, the essential
characteristic feature of which consists in providing curved edges to the dish,
basin, or bath so as to form a reservoir enabling the said dish, basin or bath to be
inclined or turned in any direction, without the contained liquid being enabled to
escape or to be spilled substantially as bereinbefore described with reference to
the accompanying drawing and for the purpose specified.
Dated this 16th day of July 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, W.C., Agents for the Applicant.