Improved Movable Devices for Producing Optical Illusion Changes.
Year: 1896

page_text: Date of Application, 14th Mar., 1890
Complete Specification Left, 12th Dec., 1896--Accepted, 27th Feb., 1897
Date
pplication, 1711 Mal., 1030
Complete Specification Left, 12th Dec., 1896--Accepted, 27th Feb., 1897
PROVISIONAL SPECIFICATION.
Improved Movable Devices for Producing Optical Illusion
Changes.
I, WALTER SYMONS, of 22 Haringey Park, Hornsey, County of Middlesex,.
Publishers Manager, do hereby declare the nature of this invention to be as
follows :-
This invention relates to improved combination of movable deviced or lines surfaced
bodies for producing changes ever varying to vision.
For the purpose of my invention, I prepare or take a printed, engraved, or other
deviced opaque surface or body and also prepare or take a transparent surface or
body similarly or otherwise suitably printed or engraved. I then mount the
transparent body on the opaque body for a reciprocating circular motion so that the
lines of one over the other produce changes of appearance gradually yet visibly
varying and look as if the lines partook of a curvature constantly approaching each
other and moving upwardly and crosswise, at the same time mixing with each other
in a novel and amusing manner when the transparent body is moving in one direction.
and away from each other with a similar or reverse crossing downwardly when
moved in the opposite direction.
By an admixture of vertical lines and horizontal lines at different parts of the two.
bodies a peculiar combination of crossings become apparent.
Dated this 14th day of March 1896
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Walter Symons.
Improved Movable Devices for Producing Optical Illusion
Changes.
I, WALTER SYMONS, of 22 Haringey Park, Hornsey, County of Middlesex,.
Publishers Manager, 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 :-
This invention relates to improved combination of movable deviced or lines
surfaced bodies for producing changes ever varying to vision.
For the purpose of my invention, I prepare or take a line printed, engraved, or
other line deviced opaque surface or body, and also prepare or take a transparent.
surface or body similarly or otherwise suitably printed or engraved in lines, I then
mount or place the transparent body on and in contact with the opaque body for a
slow reciprocating, or a slow circular motion, so that the lines of one on being moved
slowly over the other, produce changes of appearance gradually yet visibly varying,
ID 83

page_text: (particularly if the lines or the opaque body be very strong,) and look as if the lines
partook of a curvature constantly approaching each other and moving upwardly and
crosswise, at the same time mixing with each other in a novel and amusing manner
especially when the transparent body is being moved in one direction, say, upwardly,
with a similar or reverse crossing when moved downwardly, or in the opposite
direction.
By an admixture of angular lines and horizontal lines at different parts of the two
bodies, a peculiar combination of crossings become apparent.
If the lines on the opaque body be wavy as representing water and, say, a ship be
in straight line with the varying shades or tonings for pictorial effect the movement
of a straight line transparent on such opaque body will give the appearance of the
water rippling, and apparent life and reality in the scene.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what 1
claim is :-
1. The means of obtaining illusory devices or optical changes, as described.
2. The employment of line engraved, or line marked surfaces, one on opaque body
and one on transparent body in contact but movable slowly over same for producing
illusory effect, as set forth.
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Walter Symons.
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Walter Symons.