Year: 1887

page_text: Date of Application, 4th Aug., 1887
Complete Specification Left, 4th June, 1888
Complete Specification Accepted, 4th Aug., 1888

page_text: Improved Method of Producing Translucent Pictures, Designs,
Lettering, or other Matter.
I WILLIAM THEODORE JOSEPH PARKES of 12 Fleet Street and 112 Harold's Cross
Dublin in the County of Dublin Ireland presently lodging at 77 Long Acre London,
Artist Medallist and Designer, 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 :—
The principal of the Invention is the application to paper or other similar materials
of portions of Pictures, Designs, or Lettering &c. upon one side (the obverse side)
while upon the reverse side is colored a second portion of said Pictures, Designs,
or Lettering, which being held up between the spectator and the light, the effect of a
Complete Picture, Design or Lettering &c. is obtained.
It may be applied largely as an interesting means of instruction and amusement.
For example, anatomical sheets may have the various parts of the body shown
either in skeleton, or dissected and upon holding the Picture to the Light, the body
may be displayed in a complete, and natural form, thus enabling the Student, at
a glance, to see beneath the epidermis, the positions of the various bones, muscles,
nerves &c. and their relation to the whole construction of the frame.
The letters giving either the names of the subject, or the parts, may also be
concealed, and shown by exposing the Picture to the light..
In the same way, children might be more easily taught lessons of various kinds,
such for example, as the value of numerals.
The words "twice 1 are" exposed on the obverse side, which when held up to the
light the figure 2 would be made manifest, thereby impressing the answer vividly on
the mind of the learner.
Hereby is also opened a wide field for the fanciful decoration of Fans, Fire-Screens,
Lamp Shades, and Pictures on glass, which, when lighted at night would have
a different effect altogether to that shown in the day time.
It offers a wide, and novel field field for Advertising. Hand bills can be designed,
which at first sight are a species of puzzle, but which when held up to the light, bring
out the full lettering and design in bold relief, so that they would be more likely to
be retained by the recipients as curiosities.
In the same way it might he applied to. Christmas Cards, New Year and Birth-day
Cards, and also Albums of Contrasts.
Landscapes of Winter Scenery would change to Summer, a Daylight Scene to
Moonlight effect.
In Birth-day Cards Figures could be changed from childhood to youth or youth
to old age.

page_text: For Lectures, or Pamphlets on Morality and Temperance, Portraits can be shown
of persons in full possession of health and beauty; but exposure to the light would
discover the baneful effects of a life of Intemperance or Crime.
The above are but a few examples of the fields in which the invention can be
utilized; but the scope of its various applications is practically inexhaustible.
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
The Novelty of Inventing a method by which Designs and Pictures can be
produced in a more interesting form for the purposes of Information and
Amusement.