IMPROVEMENTS IN THE MANUFACTURE Maixa en ADDADAMUS EMPLOYED THEREIN
Year: 1867

page_text: LETTERS PATENT to James Booth, of Halifax, in the County of York, Stuff
Manufacturer, for the Invention of "IMPROVEMENTS IN THE MANUFACTURE
Maixa en
ADDADAMUS EMPLOYED THEREIN
"
Sealed the 17th September 1867, and dated the 21st March 1867.
PROVISIONAL SPECIFICATION left by the said James Booth at the
Office of the Commissioners of Patents, with his Petition, on the 21st
March 1867.
I, JAMES BOOTH, of Halifax, in the County of York, Stuff Manufacturer,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN THE
MANUFACTURE OF TEXTILE FABRICS, AND IN THE MEANS OR APPARATUS EMPLOYED
THEREIN," to be as follows:-
This Invention consists in the application and use of that class of yarn
known as "French twist" to form or constitute the warp of textile fabrics.
Heretofore such yarn has been used as weft only, and in the using thereof in
order to produce various desired effects in the fabric change shuttle boxes
have been employed; now by using the said yarn for warp the fabrics can be
woven in plain looms. This kind of yarn, however, as at present made is not
suitable for warps, the overlaying thread being loose upon the other or main
thread, so that it would be easily moved and displaced by the action of the
reed in the process of weaving. To remedy such defect I cause the main
thread or threads to pass through a trough containing a solution of gum, glue,

page_text: size, or other adhesive or glutinous liquid in the process of spinning or twisting
immediately before the overlaying thread is wound upon it, by which means
the threads are secured together and the yarn thus rendered capable of being
used for warps.
The means I employ for the purpose of producing this class of yarn consists
in the application and employment of a pair of nipping jaws in front of the
drawing rollers which are caused to close upon the main thread at suitable
intervals, and thereby to hold or prevent its forward motion whilst the other
thread is being wound or twisted thereon, and a rod having a lateral motion
passes in betwixt the jaws and the rollers to take up the slack, and on the
opening of the jaws the rod is withdrawn allowing the yarn to be wound upon
the bobbin as usual.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Booth in the Great Seal Patent Office on the
20th September 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
BOOTH, of Halifax, in the County of York, Stuff Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-first day of March, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirtieth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said James Booth, Her special licence that I, the said James Booth,
my executors, administrators, and assigns, or such others as I, the said James
Booth, 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
OF TEXTILE FABRICS, AND IN THE MEANS OR APPARATUS EMPLOYED THEREIN," upon
the condition (amongst others) that I, the said James Booth, 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 perfornied,
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: which the yarn E is caused to pass, being conducted by means of a crank rod
or rods I hinged so as to be readily raised out of the trough to enable the
yarn to be passed under; J and J¹ are the pair of nipping jaws, the lower one
extending the length of the frame is fixed on the guide board, and the other
or upper jaw is in detached parts, each being attached by an arm J³ to a
shaft K hinged to the frame ends, and on which is also fixed a lever L in
contact with and operated by a tappet or cam M, which tappet or cam may
be made to any suitable form so as to open and close the jaws at proper times,
as required; N is a rod attached by arms P to a shaft Q on which is fixed a
lever R in contact with and operated by a tappet or cam S, which tappet may
also be made of any suitable form to act as required to produce the lateral
inotion or rising and lowering of the rod. It will be readily understood that
as the main yarn is caused to pass through the trough containing liquid gum
or other glutinous substance it will be coated therewith, and the other yarn
being immediately twisted or wound upon it whilst in the moist state they
will, when dry, adhere permanently together, and therefore be rendered suitable
for warps; also that as by the action of the tappets or cams the jaws are
caused to close upon the yarn E at arranged times, temporarily preventing its
forward movement whilst the twisting thereof still continues, the yarn G will
thereby be wound upon E in an irregular manner, according to the prescribed
movements of the said main yarn, and thus forming a knot or spot in the yarn
at various places, "as desired. When the jaws are closed the rod N meanwhile
being lowered takes up the slack of the yarn, which is caused by the inter-
mittent motion of the yarn, or prevention of continued forward movement by
the jaws while the rollers are delivering continuously, and on the opening of
the said jaws the rod gradually rises and allows the slack to pass forward to
be twisted and wound upon the bobbins as usual.
Having thus fully set forth the nature of my said Invention, and described
the manner in which the same is performed or carried into practical operation,
I would have it understood that I do not confine myself to the precise
details as herein set forth and illustrated by the Drawings; but I wish it to
be clearly understood that what I claim as my Invention is,
Firstly, the application and use of that class of yarn known as "French
twist" for warps.
Secondly, the method and means of preparing such yarn by passing it
through any suitable gummy 'ór glutinous liquid during the process of twisting
two or more threads or strands 'together.
Thirdly, the means or apparatus herein shewn and described for producing
the irregular twist of such yarns, or any modification thereof, whereby inter-

page_text: mittent movement of the yarn is effected while the drawing or delivery rollers
are continuous in their motion as heretofore.
In witness whereof, I, the said James Booth, have hereunto set my
hand and seal, this Eighteenth day of September, One thousand eight
hundred and sixty-seven.
Signed, sealed, and delivered by the
within-named James Booth, in the
presence of
Wч. TASKER,
JAMES BOOTH. (L.S.)
Patent Agent,
Halifax and Bradford.