IMPROVEMENTS IN THE MANUFACTURE OF WOVEN FABRICS. PROVISIONAL SPECIFICATION
Year: 1873

page_text: LETTERS PATENT to Hilton Greaves, Thomas Thorpe Pearson, and
James Brickhill, of the Firm of E. Harrison and Company, of
Manchester, in the County of Lancaster, Manufacturers, for the
Invention of " IMPROVEMENTS IN THE MANUFACTURE OF WOVEN FABRICS.
PROVISIONAL SPECIFICATION left by the said Hilton Greaves, Thomas
Thorpe Pearson, and James Brickhill at the Office of the Com-
missioners of Patents, with their Petition, on the 28th June 1873.
We, HILTON GREAVES, THOMAS THORPE PEARSON, and JAMES
BRICKHILL, of the Firm of E. Harrison and Company, of Manchester,
in the County of Lancaster, Manufacturers, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN THE MANUFACTURE OF WOVEN
FABRICS," to be as follows:-
In weaving stripes and checks it has hitherto been the practice to use
warp in which all the threads are twisted one way, and the weft picks
also twisted in one way; now this Invention consists in the use of warp
and weft twisted alternately in contrary directions, or the warp may be

page_text: made of alternate rows of yarn twisted to the right hand and then to the
left, with a plain or uniform twisted weft, thus producing a stripe down
the piece; or the warp may be of uniform twisted yarn, with alternato
rows of weft twisted to the right hand and to the left, thus producing a
stripe across the piece.
By a combination of the two preceding methods checks can be pro-
duced on the fabric, the patterns being indicated by the effects of light
on the differently twisted yarn composing the warp and weft, or either of
them. '
Our Invention is applicable in manufacturing woven fabrics from
warns of cotton wool silk and every other description of fibrous sub-
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Hilton Greaves, Thomas Thorpe Pearson, and
James Brickhill in the Great Seal Patent Office on the 26th
December 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, HILTON
GREAVES, THOMAS THORPE PEARSON, and JAMES BRICKHILL, of the
Firm of E. Harrison and Company, of Manchester, in the County of
Lancaster, Manufacturers, send greeting.
:
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-eighth day of June, 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 suc-
cessors, give and grant unto us, the said Hilton Greaves, Thomas
Thorpe Pearson, and James Brickhill, Her special licence that we, the
said Hilton Greaves, Thomas Thorpe Pearson, and James Brickhill, our
executors, administrators, and assigns, or such others as we, the said
Hilton Greaves, Thomas Thorpe Pearson, and James Brickhill, our exe-
cutors, 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..

page_text: Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
THE MANUFACTURE OF WOVEN FABRICS," upon the condition (amongst others)
that we, the said Hilton Greaves, Thomas Thorpe Pearson, and James
Brickhill, our executors or administrators, by an instrument in writing
under our, or their, or one of our or their hands and seals, should par-
ticularly. 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 calender months next.
and immediately after the date of the said Letters Patent.
•
: NOW KNOW YE, that we, the said Hilion Greaves, Thomas Thorpe:
Pearson, and James Brickhill, 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
(that is to say)
The nature of our Invention in the manufacture of woven fabrics
consists in producing various patterns of checks and stripes by the effect.
of, the light upon variously twisted warp and weft of the same colour of
yarns, or white yarns.
In weaving stripes and checks it has hitherto been the practice to use
warp in which all the threads are twisted in the same direction, and the
shoots of weft are also twisted in one direction; now this Invention
consists in the use of warp and weft twisted alternately in contrary
directions, by means whereof a check can be produced on the fabric.
The size of the check will be determined by the number of warp threads
twisted alternately in contrary directions that are drawn in through
the healds, and the number of shoots of weft that are alternately picked
in succession by the shuttles containing the weft twisted in contrary
directions.
In producing a stripe down the fabric the warp consists of alternate
rows of yarn twisted to the right hand and then to the left, and the weft
is plain or uniformly twisted; and in producing a stripe across the
fabric we use a uniformly twisted warp, with alternate rows of weft
twisted to the right hand and then to the left.
In all cases the patterns are indicated by the effects of light on the
differently twisted yarn composing the warp and weft, or either of them,
and not by any difference in the colour.

page_text: The accompanying Drawing shews a tie-up, or the usual instructions
to enable a practical weaver to produce a fabric having a satin drill
stripe or check on its face. This tie-up is only given as an illustration
of one mode of performing our Invention, as the tie-up would be varied
to produce a twill or other face.
Our Invention is applicable in manufacturing woven fabrics from
yarns of cotton, wool, silk, and every other description of fibrous sub-
stances, and to bleached, unbleached, or dyed yarns.
Having thus stated the nature of our Invention, and described the
manner of performing the same, we wish it to be understood that we do:
not limit ourselves to the details given, but that we claim as our In-
vention in the manufacture of woven fabrics, the production of fabrics
having longitudinal or cross stripes, or a combination of both, to form
a check by means of yarns twisted in contrary directions, as described.
In witness whereof, I, the said James Brickhill, for myself and on ]
behalf of the said Hilton Greaves and Thomas Thorpe Pearson,
have hereto set my hand and seal this Twenty-fourth day of
December, One thousand cight hundred and seventy-three.
TAS
BRICKHILL