Improved Magic Lantern Slide Carrier.
Year: 1892

page_text: Date of Application, 8th Feb., 1892
Complete Specification Left, 30th Nov., 1892-Accepted, 31st Dec., 1892
PROVISIONAL SPECIFICATION.
Improved Magic Lantern Slide Carrier.
BARRAS RAMSAY REED The Riding Riding Mill-on-Tyne, Brewer, do hereby
declare the nature of this invention to be as follows :-
My invention consists of a shutter working vertically accross the opening in
lantern slide carrier, and is capable of being applied to all slide carriers now in
use.
It is intended to give the effect of a curtain rising and falling upon the picture
exhibited on the screen. It works independently of the lateral or vertical motion
of the slide carrier, and can be used at the option of the operator.
I take any ordinary slide carrier, and at the opening provided for the purpose
of throwing the light upon the picture, I cut a slot or groove in each of the top
and bottom frames of the carrier, and opposite to each other, such slots or grooves
being as long as may be found necessary. Into these slots I insert my shutter,
made of wood, brass or other metal, talk, glass, vulcanite or any description of
material which may be thought suitable. The form of this shutter consists of one
part being so constructed to cut off the light of the lantern from the picture when
placed in position in front of the condenser, the other part being a rectangular
opening, which permits the light to be unobstructed when desired.
Dated this 6th day of Wahrnery 1809
SNOWBALL & Co.
COMPLETE SPECIFICATION.
Improved Magic Lantern Slide Carrier.
I, BARRAS RAMSAY REED of The Riding, Riding Mill-on-Tyne, in the County
of Northumberland, Brewer, 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 an improved magic lantern slide carrier and consists of
a shutter working vertically across the opening in the lantern slide carrier and is
capable of being applied to all slide carriers now in use.
It is intended to give the effect of a curtain rising and falling upon the picture
exhibited on the screen. It works independently of the lateral or vertical motion
of the slide carrier and can be used at the option of the operator. To perform my
invention, I take any ordinary slide carrier and at the opening provided for the
purpose of throwing the light upon the picture, I cut or form a slot or groove in
each of the top and bottom frames of the carrier and opposite to each other such
slots or grooves being as long as may be found necessary.
Into the slots or grooves so formed I insert my shutter which may be made of
wood brass or other metal, talc, glass vulcanite or any description of material
which may be thought suitable.
The form of this shutter consists of one part being so constructed as to cut off the
light of the lantern from the picture when placed in position in front of the
condenser, the other part being a rectangular opening which permits the light to
be unobstructed when desired.
I will more fully describe my invention with reference to the accompanying
drawings in which
Figure 1 shows a front elevational view and
Figure 2 a plan view of a carrier frame fitted with a shutter in accordance with
my invention:

page_text: Figure 3 shows also a plan view of a modification of the form shown in Fig. 2.
In these figures the top and bottom frames a of the carrier are slotted or grooved
at a¹ to allow the shutter b to pass through them.
The lower portion 6' of the shutter is constructed so as to cut off the light of
the lantern from the picture, the upper portion 62 consisting of an opening cut in
the shutter.
The shutter is intended to be an accurate fit in the slots or grooves of the
carrier frame so that it can remain therein in any required position. By drawing
up the shutter the lower or solid part 61 is brought before the condenser and by
pushing down the shutter the upper or open part is similarly placed in like
position.
The effect of the working of the shutter thus arranged is as of a curtain falling
or rising over the picture being exhibited on the screen.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :
1. The combination with magic lantern slide carriers of a shutter formed as to
a portion thereof with a solid surface and as to another portion thereof with an
opening therein the said shutter being designed to work in slots or grooves in the
top and bottom frames of the carrier the several parts being arranged substantially
as and for the purposes hereinbefore set forth.
Dated this 28th day of November 1892.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.