IMPROVEMENTS IN MACHINERY USED IN THE MANUFACTURE OF SILK AND OTHER FABRICS
Year: 1860

page_text: LETTERS PATENT to Polydore Dorgeval, of Lyon, in the 'Empire of
France, for the Invention of "IMPROVEMENTS IN MACHINERY USED IN THE
MANUFACTURE OF SILK AND OTHER FABRICS."
"
PROVISIONAL SPECIFICATION left by the said Polydore Dorgeval at
the Office of the Commissioners of Patents, with his Petition, on the
24th November 1860.
I, POLYDORE DORGEVAL, of Lyon, in the Empire of France, do hereby
declare the nature of the Invention for "IMPROVEMENTS IN MACHINERY USED IN
THE MANUFACTURE OF SILK AND OTHER FABRICS," to be as follows:-
3:
;.
This Invention consists in improvements in the mechanism employed in the
manufacture of silk and other fabrics; this mechanism is shewn in the Draw-
ings hereunto annexed. In the Drawings, A is a double hook which alter;
nately takes hold of two bars C, C, to which are connected the heddles, and
which produce the shed when raised and lowered for those kinds of fabrics
known as taffetas and other fabrics which require like arrangements of heddles
B is a small roller carried by a pin on the back of the book A; this pin may
be placed in different holes in the hook A, and the position of the roller B on.
the hook A thereby varied, according to the shed that the fabric which it is
desired to produce requires; the roller B works in the groove D, which is
made semicircular at its upper end for the purpose of moving the hook A from
left to right and right to left. C, bars to which the heddles are connected;
D, groove curved at its upper end, which serves to guide the roller B in its
movement; E, roller which may be placed either higher or lower in like
manner to the roller B, in order to throw the shuttle sooner or later; this
"

page_text: roller strikes against the dogs F; these dogs are connected to arms which are
connected by cords to the pickers; F are the dogs against which the roller E
strikes, to cause the shuttle to be thrown; G, slots to receive the arms H;
these arms are held in the slots by the binding screws I; J, a slide to which is
hinged the hook A; K, treadle which is linked to the slide J, and which serves
to give motion to the entire loom; it may be put in motion by manual power
or otherwise. L, slide which serves to receive the blow of the treadle when it
rises to its highest position, and thus facilitates the movement of the hook A,
and at the same time prevents (after the throwing of the hook A) the roller B
descending on the opposite side to that which it ought to do; M, spiral springs
supported by two guide rods N,-N.; these spiral springs press upon the upper
surface of the slide L.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Polydore Dorgeval in the Great Seal Patent Office on
the 24th May 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, POLYDORE
DORGEVAL, of Lyon, in the Empire of France, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of November, in the year of our
Lord One thousand eight hundred and sixty, in the twenty-fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Polydore Dorgeval, Her special licence that I, the said Polydore Dorgeval,
my executors, administrators, and assigns, or such others as I, the said
Polydore Dorgeval, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times there-
after 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 "IMPROVE-
MENTS IN MACHINERY USED IN THE MANUFACTURE OF SILK AND OTHER FABRICS,"
upon the condition (amongst others) that I, the said Polydore Dorgeval, 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. *

page_text: NOW KNOW YE, that I, the said Polydore Dorgeval, do hereby declare
the nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:--
This Invention consists in improvements in the mechanism employed in the
manufacture of silk and other fabrics; this mechanism is shewn in the Draw-
ings hereunto annexed. In the Drawings, A is a double hook which alternately
takes hold of two bars C, C, to which are connected the heddles, and which
produce the shed when raised and lowered for those kinds of fabrics known as
taffetas and other fabrics which require like arrangements of heddles; B is a
small roller carried by a pin on the back of the hook A; this pin may be
placed in different holes in the hook A, and the position of the roller B on the
hook A thereby varied, according to the shed that the fabric which it is desired
to produce requires; the roller B works in the groove D, which is made semi-
circular at its upper end, for the purpose of moving the hook A from left to
right and right to left. C, bars to which the heddles are connected; D,
groove curved at its upper end, which serves to guide the roller B in its move-
ment; E, roller which may be placed either higher or lower in like manner to
the roller B, in order to throw the shuttles sooner or later; this roller strikes
against the dogs F; these dogs are connected to arms which are connected by
cords to the pickers; F are the dogs against which the roller E strikes to
cause the shuttle to be thrown; G, slots to receive the arms H; these arms
are held in the slots by the binding screws I; J, a slide to which is hinged the
hook A; K, treadle which is linked to the slide J, and which serves to give
motion to the entire loom; it may be put in motion by manual power or
otherwise. L, slide which serves to receive the blow of the treadle when it
rises to its highest position, and thus facilitates the movement of the hook A,
and at the same time prevents (after the throwing of the hook A) the roller B
descending on the opposite side to that which it ought to do; M, spiral
springs supported by two guide rods N, N; these spiral springs press upon the
upper surface of the slide L.
In witness whereof, I, the said Polydore Dorgeval, have hereunto set my
hand and seal, this Twenty-eighth day of April, in the year of our Lord
One thousand eight hundred and sixty-one.
POLYDORE DORGEVAL. (L.S.)