A NEW OPTICAL APPARATUS FOR REPRODUCING AND VARYING ALL SORTS PROVISIONAL SPFICATIONINGS, WHICH WE CALL GONIOMETROSCOPE
Year: 1861

page_text: LETTERS PATENT to Adolphe Huray & Hermann Leilé, Opticians,
both of 42, Rue Laffitte, Paris, Empire of France, for the Invention
of "A NEW OPTICAL APPARATUS FOR REPRODUCING AND VARYING ALL SORTS
PROVISIONAL SPECIFICATION left by the said Adolphe Huray and
Hermann Leilé at the Office of the Commissioners of Patents, with their
Petition, on the 2nd April 1861.
We, ADOLPHE HURAY & HERMANN LEILE, Opticians, of 42, Rue Laffitte,
Paris, in the Empire of France, do hereby declare the nature of the said
Invention for "A NEW OPTICAL APPARATUS FOR REPRODUCING & VARYING
ALL SORTS OF DRAWINGS, WHICH APPARATUS WE CALL GONIOMETROSCOPE," to be as
follows:-
The instrument consists of two pieces of wood, metal, or other suitable
substance of equal size connected together at one end by hinges, & forming
the case; each piece is furnished with a reflector of copper burnished with silver
or of any other suitable reflecting substance; of two needles screw cut at one
part & passing through each side of the case in a vertical position, of a metal
protractor placed on the top of the case, & of a small adjusting screw serving to
fix the protractor when required. By means of this instrument, which we
denominate goniometroscope, all sorts of drawings are reproduced & varied.

page_text: The working of it is very simple; it is placed on the object or objects, such as
drawings, small embroideries or flowers, & the most beautiful & complicated
yet perfectly regular result is obtained; the reflectors being movable it has
the advantage of showing the objects at any required angle. By means of the
protractor divided into fifteen degrees, & of the small adjusting screw fixed on
the top of the case, the instrument is fixed at the angle required. The two
needles, which are screw cut & pass through each side of the case, are made to
project or are withdrawn by simply screwing or unscrewing them.
The instrument when not required for use shuts up & is fixed with a clasp
or spring.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Adolphe Huray and Hermann Leilé in the Great Seal
Patent Office on the 2nd October 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, ADOLPHE
HURAY and HERMANN LEILE, Opticians, both of the Numero 42, Laffitte
Street, in Paris, Empire of France, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of April, in the year of our Lord
One thousand eight hundred and sixty-one, in the twenty-fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Adolphe Huray and Hermann Leilé, Her special licence that we, the
said Adolphe Huray and Hermann Leilé, our executors, administrators, and
assigns, or such other as we, the said Adolphe Huray and Hermann
Leilé, our 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 "A NEW OPTICAL APPARATUS
FOR REPRODUCING AND VARYING ALL SORTS OF DRAWINGS, WHICH APPARATUS WE
CALL GONIOMETROSCOPE," upon the condition (amongst others) that we, the said
Adolphe Huray and Hermann Leilé, our executors or administrators, by
an instrument in writing under our, 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.

page_text: NOW KNOW YE, that we, the said Adolphe Huray and Hermann
Leilé, do hereby declare the nature of our said Invention, and. in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, that is to say:-
The present Invention consists of an instrument which we denominate
goniometroscope, by aid of which patterns, designs, flowers, lace, and other
small objects can be multiplied and reflected at any given angle from a triangle
upwards.
The instrument consists of a case of wood, metal, or any other suitable
material opening bookwise, the two sides or pieces forming the case being
as closely connected as possible by hinges, leather binding, or other suitable
means of joining so as to form what we will call the back; the sides are of
sufficient thickness so that when required they will stand securely on their ends
or bottom parts, the back being in a vertical position; the two sides thus forming
a case are each covered on the inside with a thin sheet of copper burnished
with silver, which serve as reflectors. Any other suitable reflecting substance
can be used, but we prefer the burnished copper reflectors, as there is no
danger of their breaking, and they are light and inexpensive. These reflectors
are placed as near as practicable to the hinge part of the case, so that the
reflection is perfectly made in the centre of the pattern. Screwed or other-
wise fixed at the top of one side of the case, at a small distance from the back
or hinge connected part, is a half circle of metal or protractor marked off so
that by its means the different angles may be at once and correctly found; the
protractor is held firmly on the other side of the case by means of a small
holder, in which it passes furnished with a screw, which is there fixed at the
same distance from the back or hinge connected part as the protractor.
Through each side of the case near to the front or opening part, and in a
vertical position, passes a needle having a head by means of which it can be
turned; it is screw-cut at one part so as to bite in the hole through which it
passes; it is slightly longer than the case, and so arranged that by turning the
head the needle can be made to enter the pattern and so steady the instru-
ment, and when the angle is to be changed or the instrument closed, by
turning the heads in the opposite direction the points or ends of the needles are
withdrawn into the case. When not required, the instrument can be closed
and connected by means of a hook or other suitable fastening fixed at the
front of the side; the protractor is also made to move back and so lay on the
top of the case.
The outside form of the case may vary, but we prefer giving it a slightly
curved or circular form, so that the protractor lies on the top when bent back

page_text: without projecting, and also that the instrument may have a larger surface to
stand on.
The case can be covered with leather, or be of polished wood or otherwise
finished, and the size may vary according to the use to which it is destined;
the needles, clasp, and protractor can be gilt or plain, in short we wish it to be
understood that we do not confine ourselves to the various details, but what
we claim and desire to secure by Letters Patent is, the general construction
by means of which the instrument can be set at any angle, the two sides
with their reflectors being movable, the protractor serving to aid in
setting the instrument, and the needles to fix it when at the required
angle.
In witness whereof, we, the said Adolphe Huray and Hermann Leilé,
have hereunto set our hands and seals, this Second day of October,
in the year of our Lord One thousand eight hundred and sixty-one.
ADOLPHE HURAI. (L.S.)
HERMANN LEILE.
(LS.)