IMPROVEMENTS IN STEREO- " SCOPES AND IN COMBINING A LAMP THEREWITH
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I JOSEPH LYONS of 230 Whitechapel Road in the County of Middlesex Artist
do hereby declare the nature of my Invention for IMPROVEMENTS IN STEREO-
"
SCOPES AND IN COMBINING A LAMP THEREWITH" to be as follows:-
My improvements in stereoscopes relate to the application of coloured glasses
which can be brought into position without destroying the focus and will produce
varied effects of colour to a plain stereoscopic slide. The coloured glasses by their
arrangement and combination with the stereoscope do not modify the light but
impart a most brilliant effect to the stereoscopic slide.
The stand upon which the stereoscope is mounted also carries the lamp for
illuminating the same and either the stereoscope or the lamp or both are capable of
adjustment thereon.

page_text: CUMI LEIE
I JOSEPH LYONS of 230 Whitechapel Road, London, in the County of Middlesex,
Artist, do hereby declare the nature of my invention for. "IMPROVEMENTS IN
STEREOSCOPES AND IN COMBINING A LAMP THEREWITH," and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement:-
My improvements in stereoscopes relate to the application of one or more pieces
of coloured glass which are so arranged that they may be readily placed at or
between the eye pieces of a stereoscope and the slide or object looked at, without
necessarily destroying the focus employed; and when brought thus into position
will produce upon the eyes of the observer varied effects of colour when ordinary
plain or uncoloured pictorial slides are inserted. The coloured glasses by their
arrangement and combination with the stereoscope do not modify or change the
light falling upon the picture looked at, but impart a most brilliant and chromatic
effect to the stereoscopic slide, as seen by the beholder.
While the method of mounting the coloured glasses, and the number and colours
of the same may be varied, I prefer to use three colours only: red, green, and
violet. A disc of each colour is secured to a pivotted frame capable of revolution
upon its axis. Two similar frames are attached to the stereoscope at such points,
that each disc of coloured glass may be placed concentric with, and parallel to, the
eye glass with which it is combined. A slot or opening is made behind each eye
glass upon the plane of revolution of each pivotted frame, and the two frames,
(each having the three selected colours), may be placed in various combinations so
as to produce beautiful optical effects upon the mind of the observer.
The stereoscope is preferably mounted upon a stand which is also used to carry
a suitable lamp employing any desired illuminating agent. This lamp, as likewise
the stereoscope, may be fixed; or either or both of them made adjustable, and
capable of relative movement to each other.
In the figures, A, represents the body of the stereoscope; B, the stand or support;
C, the lamp; D, the pivotted frames; E, the coloured glasses; F, the slot; G, the
eye pieces. H, is a ball and socket joint for varying the vertical or horizontal
angle of the instrument; and I, a sleeve by which the lamp is carried. Fig. 1 is a
perspective view; Fig. 2 a side elevation, and Fig. 3 a front view of frame.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1. A stereoscope capable of producing chromatic optical effects substantially as
described.
2. The combination of a lamp and a chromatic stereoscope substantially as
described.
3. In a stereoscope, the use of coloured glass substantially as and for the purpose
described.

page_text: 4. The combination of coloured glass with the eye pieces or lenses of a stereo-
scope or instrument for viewing pictures, substantially as described.
5. Producing a chromatic effect in viewing a plain or uncoloured picture or
pictures, substantially as described.
6. A moveable frame carrying one or more pieces of coloured glass when used in
combination with a stereoscope, substantially as described.
7. The combination of two frames carrying coloured glass, with the eye pieces of
a stereoscope, substantially as described.
8. Introducing coloured glass between the eye pieces of a stereoscope and the
picture looked at, substantially as described.
9. The combination of a moveab'e frame, with a slot or groove, and the eye
piece of a stereoscope, substantially as described.
10. The combination of a lamp with a stereoscope producing chromatic effects,
substantially as described.
11. The combination of a stand, carrying a stereoscope producing chromatic
effects, and a lamp; substantially as described.
12. An adjustable stand, combined with a lamp, and a stereoscope in which
coloured glass is used, substantially as described.
Dated this 11th doy of Tuna 1995