IMPROVEMENTS IN THE CONSTRUCTION OF THE COMBS OF LOOMS FOR WEAVING
Year: 1853

page_text: LETTERS PATENT to François Valtat and François Marie Rouillé,
of Rue Rambuteau, Paris, France, Manufacturers, and of 4,
South Street, Finsbury, London, for the Invention of "IMPROVE-
PROVISIONAL SPECIFICATION left by the said François Valtat
and François Marie Rouillé at the Office of the Commissioners
of Patents, with their Petition, on the 9th March 1853.
We, FRANÇOIS VALTAT and FRANÇOIS MARIE ROUILLÉ, of Rue Ram-
buteau, Paris, France, Manufacturers, and of 4, South Street, Finsbury,
London, do hereby declare that the nature of the Invention for
"IMPROVEMENTS IN THE CONSTRUCTION OF THE COMBS OF LOOMS FOR WEAVING,"
to be as follows:-
The Invention relates to the construction of reeds for weaving all
kinds of fabrics, and consists in having the teeth of two different tips;
the shortest ones being joined by another transversal piece, which
steadies them, and prevents their stopping the thread by means of their
sharp extremities.
The design to be obtained is naturally dependent on the mode of
arranging the teeth of the comb, in short and long teeth.

page_text: DESCRIPTION OF THE DRAWINGS.
A, represents the longer teeth; they are soldered to the two sides of
the frame C.
B, are the short teeth; they are fastened at the lower part of the
frame C, the upper part being framed in by cross-pieces D, which,
coming across the sharp points, prevent the catching of the thread,
thereby insuring a perfect work..
In the weaving of the cloth, the thread being passed from right to
left, and vice versâ, it will easily be understood that the said thread
being guided for the width of the plait by the small teeth, the larger
the amount of teeth used the larger will be the plait
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said François Valtat and François Marie Rouillé, in
the Great Seal Patent Office, on the 9th September 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we,
FRANÇOIS VALTAT and FRANÇOIS MARIE ROUILLÉ, of Rue Rambuteau,
Paris, France, Manufacturers, and of 4, South Street, Finsbury,
London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of March, One thousand
eight hundred and fifty-three, in the sixteenth year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto us, the said
François Valtat and François Marie Rouillé, Her special licence that
we, the said François Valtat and François Marie Rouillé, our executors,
administrators, and assigns, or such others as we, the said François
Valtat and François Marie Rouillé, 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, our Invention for "IMPROVEMENTS IN THE CONSTRUCTION
OF THE COMBS OF LOOMS FOR WEAVING," upon the condition (amongst
others) that we, the said François Valtat and François Marie Rouillé,

page_text: or one of us, by an instrument in writing under our hands and seals, or
under the hand and seal of one of us, 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 we, the said François Valtat and François
Marie Rouillé, do hereby declare the nature of our said Invention, and
in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement thereof,
reference being had to the drawing hereto annexed, and to the figures
and letters marked thereon, that is to say:
Our Improvements relate to weaving the plaits or folds of plaited
fabrics, which have been generally produced by the needle and hand,
and consist in constructing combs with series of short teeth united
together by a transverse piece, by which the threads are raised at every
throw of the shuttle from one of the adjacent long teeth to the other.
Hitherto the teeth of combs for weaving have been uniform in
length, and fixed at their two extremities, by which the thread, when
introduced into a tooth of the comb, is prevented from egressing from
it. This system of weaving gives rise to great inconveniences for
manufacturing light or open fabrics, in which variety and novelty of
design are required, and recourse has been had to the needle to produce
this kind of work.
To obviate this defect, we have been led to construct the comb
shewn in the annexed drawing, which may be employed for the same
purposes and in a similar manner to the common comb. It is
composed of teeth of two sizes; that is to say, long teeth soldered at
both extremities, marked A, and short teeth, marked B, soldered
only at the bottom to the frame C, and firmly united and kept in
place by a transverse piece D, which allows the thread to be passed
above the assemblage of short teeth B, from the short tooth on one
side to the short tooth on the other side.
The number of short teeth varies according to the nature of the
design; that is to say, to make a small plait, only a small number of

page_text: short teeth is required, the width of the folds being in proportion to the
number of short teeth combined. The thread (wip) travels from right
to left, and, vice versâ, from the first to the last short tooth of every
series; and being turned down by the dupes to the level of the part of
the warp left at the bottom, the weft passes above. The thread, by its
alternate motion, forms on the tissue a kind of zig-zag figure, which is
brought into a straight line by drawing it out of the tissue; by this
means the tissue is united at the two extreme points of the zig-zag
figure, and forms the plait or fold in a perfect manner.
And having now described the nature of our said Invention, and the
manner in which the same is to be performed, we wish it to be under-
stood that we do not confine ourselves to the precise details herein laid
down, so long as the peculiar character of the Invention be retained.
But what we claim is the constructing a comb for weaving tissues
with a longitudinal fold or plait, or any other similar effect, by means
of long and short teeth suitably disposed, as herein-before described,
and referred to in the drawing.
In witness whereof, I, the said Francois Marie Rouillé, have
hereto set my hand and seal, this Twenty-ninth day of August,
in the year of our Lord One thousand eight hundred and fifty-
throo
F. M. ROUILLE. (L.s.)
Witness, HY. GILBEE.

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