Improved Apparatus for Printing Lantern-slides from a Photographic or like Negative.
Year: 1891

page_text: Date of Application, 8th Oct., 1891
Complete Specification Left, 8th July, 1892-Accepted, 13th Aug., 1892
PROVISIONAL SPECIFICATION.
Improved Apparatus for Printing Lantern-slides from a Photographic
or like Negative.
JAMES DORE Watchmaker, Optician Lantern Slide Maker &c. 27 High Street
Sandown I. W. do hereby declare the nature of this invention to be as follows :-
A frame of wood or other suitable material containing a panel with opening in
the centre rather smaller than the transparency plate to be used. In use a negative
(photographic or other) is placed at the back of panel &. is kept in position by a
diaphragm of wood or other suitable material, hinged to the inside of frame &
fastened by a spring catch allowing any part of the negative to be adjusted to the
opening in panel. In this diaphragm is an opening exactly opposite that of the
panel to receive the-sensitized plate. A back or cover of wood or other material
also hinged to & inside frame fits over the diaphragm & fastens by turn-buttons of
brass or other material. On the inside. centre of back is fastened a flexible pad
which keeps the sensitized plate in contact with the negative, when the cover is
closed..
There are no loose. parts and any number of duplicates can be made.from. the
same-negative without readjustment.
Dated this Sixth day of October 1891
COMPLETE SPECIFICATION.
Improved Apparatus for Printing Lantern-slides from a Photographic
or like Negative.
I, JAMES DORE, Watchmaker, Optician, Lantern-slide. Maker &c., 27 High
Street, Sandown, Isle of Wight, 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 :-
In carrying out this invention I prefer to employ a frame of wood or other
suitable material.containing a panel having an opening in-the.centre rather smaller
than the transparency plate to be used. In use a negative (photographic or other)
is placed at the back of the panel and is kept in position by a diaphragm or frame
of wood or other suitable material hinged to the inside of the outer frame and
fastened by a spring catch allowing any part of the negative to be adjusted to the
opening in the panel. In this diaphragm is an opening exactly opposite that of the
panel to receive the sensitized plate. A back or cover of wood or other material
also hinged to the inside frame fits over the diaphragm and fastens by turn-buttons
of brass or other material. On the inside and at the centre of the back is fastened
a flexible pad which keeps the sensitized plate in contact with the negative when
the cover is closed.
There are no loose parts and any number of duplicates can be made from the
same negative without readjustment.
In the accompanying drawings
Fig. 1 is a perspective view of the apparatus open and as seen from the back

page_text: Fig. 3 is a perspective view of one of the inner frame hinges drawn to larger
scale than that to which Figs. 1 and 2 are drawn.
Like letters indicate like parts throughout the drawings.
A is the outer frame and B the panel permanently secured therein in any
convenient manner. B' is the opening in the centre of the panel B-the edges of
which surrounding this opening are preferably bevelled as shown in Fig. 2. The
opening B' is preferably rather smaller than the transparency plate to be used, as
indicated in Fig. 1 wherein such a plate is represented in dot and dash lines and
lettered C.
D is the diaphragm or second or inner frame hinged by the hinges D' to the side
of the frame A and adapted to be retained in its closed position by a spring catch E
which may be secured to the side of frame A opposite to that to which the hinges D'
are attached. Each of the hinges D' is rigidly secured to the frame D and as
shown in Fig. 3 is provided with a slot d' through which passes the screw which
secures it to the frame A so that it is capable of sliding up and down to allow the
frame D to accommodate itself to negatives of different thicknesses. F is a spring
which holds the frame D down upon the negative. The opening D' of the hinged
frame D may if necessary be slightly larger than the transparency plates C
to be used and when the frame D is closed comes opposite the opening B¹ of the
panel B.
G is the back hinged by the hinges G₁ to, and fitting into the back of the
frame A, A' being stops for preventing the back from being forced too far into the
frame A. G is a recess for accommodating the end of the spring catch E.
His the flexible pad secured to the inner side of the back G and which as shown
may consist of a bent spring the two free ends of which are preferably protected
by indiarubber or equivalent bands h¹ to prevent any damage being done by the
metal pressing directly upon the negative or transparency plate C.
I is a turn-button for securing the back G in its closed position and one or more
of which of any suitable construction may be used. J are tabs secured one to the
frame D and another to the back G for opening them by.
In use a negative (photographic or other) as shown at K in Fig. 1 is placed at
the back of the panel B against which it is securely retained by the frame D being
folded down upon it (the face of the frame D which is pressed against the negative
is preferably covered with felt or equivalent material D³) and held by the spring
catch E and spring F. The transparency plate C is then laid in the opening D³ of
frame D and the back G closed down and secured by the turn button I so that the
flexible pad H presses the transparency plate firmly against the negative.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is,―
1. In apparatus such as described the combination with a frame A having a
permanently fixed panel B provided with an opening B' of a back or cover G and
inner frame such as D both hinged to the frame substantially as described and illus-
trated in the accompanying drawings.
2. In apparatus such as described the combination with a panelled frame such as
A B B' and inner frame such as D of slotted hinges and spring such as D' d¹ª and F
substantially as described and illustrated in the accompanying drawings.
3. In apparatus such as described the combination with a frame such as D of
slotted hinges such as D' d' and controlling spring F substantially as described and
illustrated in the accompanying drawings.
4. In apparatus such as described the combination with a panelled frame such as
A B B' of a hinged back or cover G and hinged inner frame spring and catch F
and E and flexible pad such as H substantially as described and illustrated in the
accompanying drawings.
5. The combination and arrangement of parts constituting the complete apparatus

page_text: for printing lantern slides from a photographic or like negative substantially as
described and illustrated in the accompanying drawings.
Dated thin Sirch dow of Iul 1800
JAMES DORE.
W. P. Thompson & Boult,
Agents for the Applicant.