IMPROVEMENTS IN THE MANUFACTURE AND MEANS OF EXHIBITING TRANSPARENT DEVICES OR DESIGNS
Year: 1873

page_text: LETTERS PATENT to Walter Rowland Holyoake, of Hayter House,
Marylebone Road, in the County of Middlesex, Artist, for the
Invention of "IMPROVEMENTS IN THE MANUFACTURE AND MEANS OF
EXHIBITING TRANSPARENT DEVICES OR DESIGNS."
Sealed the 20th March 1874, and dated the 7th October 1873.
PROVISIONAL SPECIFICATION left by the said Walter Rowland
Holyoake at the Office of the Commissioners of Patents, with his
Petition, on the 7th October 1873.
I, WALTER ROWLAND HOLYOAKE, of Hayter House, Marylebone
Road, in the County of Middlesex, Artist, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN THE MANUFACTURE AND MEANS OF
EXHIBITING TRANSPARENT DEVICES OR DESIGNS," to be as follows:-
"
The transparencies or transparent devices and designs contemplated
include and are largely intended for facilitating the naming of streets,
railway stations, and advertising purposes or other purposes in which
prominent display is desired to be obtained by the passage of artificial or
natural light through the transparencies, devices, or designs; and the.

page_text: quality of transparency is to be understood as including not only perfect
transparency but any degree of partial transparency.
I prepare the devices or designs by printing, painting, or any other
process, by which they may be produced upon the desired medium, such
for instance as transparent cloth, and when I have obtained an impres-
sion, if it is not sufficiently transparent, I treat it with a solution of
Canada balsam and turpentine, and cut it into the required size and
shape, lay it upon a clean surface, and gently rub it over with a warm
solution of size, isinglass, or some other glutinous, and partially color-
less vehicle. I then place it upon a perfectly clean and warm piece of
glass, colored or colorless, bent or otherwise, and carefully rub it down
with a tuft of cotton wool, after which I take a second piece of glass,
also clean, and warm and lay it upon the cloth or medium, and cement
them altogether, and bind or cover the edges with japanned leather,
varnished calico, or any other impervious material, to prevent or retard
discoloration by the atmospheric air or the action of the gas.
The uses above mentioned will frequently require the ready applica
tion and sometimes the change of one transparency for another, and
with this object I construct them with slings and an elongating bar, the
slings supporting the device or design by or from the bar, which finds
its own rest or support by the act of elongation. As, for instance, it
may be wished to exhibit a motto, word, or other device or design in a
street lamp or a window sash. An elongating bar approximately of the
proper length, being applied against and between the vertical framing of
the lamp or window sash is to be extended to press the ends of tho bar
firmly against the framing or force them into holes or sockets prepared
for the purpose.
It will be convenient to make the bar of pieces of iron or brass wire,
and to provide for the extension by making one piece to slide tightly in
or against another, or by a screw fitting of the pieces, either of which
constructions will also readily permit a reverse movement by which the
bar will be shortened and the design or device readily removed.
Any convenient slings may be used, those more immediately contem-
plated being as follows:-Slings formed by metal rings passing through
holes in the plates of glass; or slings formed by loops or pieces of the
cloth or material between the plates of glass left protuding for the
purpose; or slings formed by loops upon the binding; or preferably

page_text: slings formed by metal sliding hooks, for which thin sheet brass or brass
wire of a round or half round section will be found convenient.
The Invention includes the substitution of convenient transparent
material in place of the glass plates.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Walter Rowland Holyoake in the Great Seal Patent
Office on the 6th April 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WALTER
ROWLAND HOLYOAKE, of Hayter House, Marylebone Road, in the County
of Middlesex, Artist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of October, in the year of
our Lord One thousand eight hundred and seventy-three, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors
give and grant unto me, the said Walter Rowland Holyoake, Her special
license that I, the said Walter Rowland Holyoake, my executors, admini-
strators, and assigns, or such others as I, the said Walter Rowland
Holyoake, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for
" IMPROVEMENTS IN THE MANUFACTURE AND MEANS OF EXHIBITING TRANSPARENT-
DEVICES OR DESIGNS," upon the condition (amongst others) that I, the said
Walter Rowland Holyoake, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Walter Rowland Holyoake, do`

page_text: the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The transparencies or transparent devices and designs contemplated
include and are largely intended for facilitating the naming of streets,
railway stations, and advertising purposes or other purposes in which
prominent display is desired to be obtained by the passage of artificial or
natural light through the transparencies, devices, or designs. The
quality of transparency is to be understood as including not only perfect
transparency, but any degree of partial transparency.
I prepare the divices or designs by printing, painting, or any other :
process, by which they may be produced upon the desired medium, such
for instance as tracing paper or transparent cloth, and when I have
obtained an impression, if it is not sufficiently transparent, I treat it
with a solution of Canada balsam and turpentine, and cut it into the
required size and shape, lay it upon a clean surface, and gently rub it 1
over with a warm solution of size, isinglass, or some other glutinous and
partially colorless vehicle. I then place it upon a perfectly clean and
warm piece of glass, colored or colorless, bent or otherwise, and carefully
rub it down with a tuft of cotton wool, after which I take a second piece
of glass, also clean, and warm and lay it upon the cloth or medium, and 2
cement them all together, and bind or cover the edges with japanned
leather, varnished calico, or any other impervious material, to prevent or
retard discoloration by the atmospheric air or the action of the gas.
The uses above mentioned will frequently require the ready applica-
tion and sometimes the change of one transparency for another, and with 2
this object I construct them with slings and an elongating bar, the
slings supporting the device or devices by or from the bar, which finds
its own rest or support by the act of elongation. As, for instance, it´
may be wished to exhibit a motto, word, or other device or design in a
street lamp or a window sash. An elongating bar approximately of the 3
proper length being applied against and between the vertical framing of
the lamp or window sash is to be extended to press the ends of the bar
firmly against the framing or force them into holes or sockets prepared
for the purpose.
It will be convenient to make the bar of pieces of iron or brass wire, 3
and to provide for the extension by making one piece to slide tightly in
or against another, or by a screw fitting of the pieces, either of which

page_text: Firstly. The improved manufacture of transparent devices or designs
resulting from the combinations of parts, substantially as herein described,
and as illustrated by the Drawing.
And, Secondly. The improved means of exhibiting transparent devices.
or designs resulting from the combinations of the devices or designs with 5
slings and extending rod, substantially as herein described, and as
illustrated by the Drawings.
And be it noted that the Drawings are explanatory only, and are not
to be read as limiting the claims above asserted.
In witness whereof, I, the said Walter Rowland Holyoake, have 1
hereunto set my hand and scal, this Second day of April, in
the year of our Lord One thousand eight hundred and seventy-
four.