Improvements in Carriers for Holding Magic Lantern Slides.
Year: 1892

page_text: Date of Application, 9th Sept., 1892
Complete Specification Left, 9th June, 1893-Accepted, 9th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Carriers for Holding Magic Lantern Slides.
I, LEWIS MYER ISAACS of 40 Furnival Street Holborn in the County of
Middlesex Optician do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to enable magic lantern slides to be placed in
front of the lens from either side and properly centred by any person the displayed
slide being pushed out into a position for easy withdrawal by the act of centring
the new slide.
Now according to this invention I provide a frame carrying two lantern slides
sliding within a skeleton frame which fits the "lens aperture" in the lantern.
The upper rail of the sliding frame has attached thereto two or more rollers over
which runs a band of tape or other suitable material the ends of which are attached
to the inside of the upper rail of the skeleton frame.
To the centre of the band I attach a projection or carrier of metal or other
suitable material for the purpose of pushing out the slides on either side con-
secutively to enable the same to be grasped and withdrawn by the operator
I attach also to the said band two suitable clips to carry the slides before the lens
of the lantern.
I provide further a piece of wood or other suitable material sliding easily in the
sliding frame which serves to form a stop for the slide when in position and also to
close the opening left by the receding slide thus shutting off the light from the
lantern screen until the next slide is properly centred.
Dated this Ninth day of September 1892.
FREDK. WALKER,
11, Furnival Street, Holborn, London, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Carriers for Holding Magic Lantern Slides.
I LEWIS MYER ISAACS 40, Furvival Street, Holborn in the County of
Middlesex Optician do hereby declare the nature of this invention and in what
manner the saine is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
The object of this invention is to enable magic lantern slides to be placed in front
of the lens from either side and properly centred by any person, the displayed slide
being pushed out into a position for easy withdrawal by the act of centreing the
new slide.
Now, according to this invention I provide a frame B carrying two lantern slides
sliding within a skeleton frame A which fits the "lens aperture" in the lantern.
The bottom rail of the sliding frame B has attached thereto two or more
rollers CC over which runs a band of tape or other suitable material D, D', the
ends of which are attached to the inside of the bottom rail of the skeleton frame.
To the centre of the band I attach a projection or carrier of metal or other
suitable material E for the purpose of moving on either side the block G (hereafter
described) which by moving part B backwards or forwards imparts an accelerated
motion to projection or carrier E by the action of the double band D D moving
over rollers CC.
I provide further a piece or block of wood or suitable material G having at the
[Price 8d.]

page_text: bottom a slot or recess receiving the projection E which serves to transmit to the
said block the motion of the band D D.
This block answers the following purposes:
1. Pushing out the slides on either side consecutively, to enable the same to be
grasped and withdrawn by the operator:
2. Forming a stop for the slide when in position and also closing the opening left
by the receding slide thus shutting off the light from the lantern screen until the
next slide is properly centred.
I also attach to the said piece or block G two suitable clips F F' to carry the
slides before the lens of the lantern.
H shows a slide in position ready to be moved in front of the lens.
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 1
claim is.
1. The method of moving the slides by means of a band working on rollers, as
described.
2. The projection attached to the said band and transmitting its motion to the
block G.
3. The block G acting as a dissolver and the clips attached thereto.
LOK 1900
LEWIS MYER ISAACS.