AN IMPROVED MODE OF WEIGHTING THE YARN-BEAM IN LOOMS USED IN THE MANUFACTURE OF CLOTH BY STEAM POWER
Year: 1857

page_text: LETTERS PATENT to Richard Bolton, of Blackburn, in the County of
Lancaster, Overlooker of Power Looms, for the Invention of "AN
IMPROVED MODE OF WEIGHTING THE YARN-BEAM IN LOOMS USED IN THE
MANUFACTURE OF CLOTH BY STEAM POWER."
Sealed the 15th January 1858, and dated the 20th July 1857.
PROVISIONAL SPECIFICATION left by the said Richard Bolton at the
Office of the Commissioners of Patents, with his Petition, on the
20th July 1857.
I, RICHARD BOLTON, of Blackburn, in the County of Lancaster, Overlooker
of Power Looms, do hereby declare the nature of the said Invention for
"AN IMPROVED MODE OF WEIGHTING THE YARN-BEAM IN LOOMS USED IN THE MANU-
FACTURE OF CLOTH BY STEAM POWER," (reference being had to tho Drawing
bereunto annexed, and in which said Drawing similar parts are marked and
referred to by similar letters,) to be as follows:-
A is the yarn-beam at the back of the loom; B, B, are the beam necks round
which I pass the cords or chains C, C, two or three turns, and thence round
the pullies D, D, to the hooks of the levers E, E, to which I fasten the cords
or chains. Two pullies may be used at each side instead of one, thereby
increasing the leverage. F, F, are weights of from ten to forty pounds, accord-
ing to the kind of cloth to be woven and the pressure desired. These weights
slide upon the levers E, E. G, G, indicate the sides of the loom. The other

page_text: end of the cords or chains C, C, are attached to springs, varying in strength,
but similar to those at present in use. The advantages to be derived from
from this Invention are, the dispensing with the large and numerous weights at
present in use, the improved steadiness in working, and evenness and strength
of cloth obtained, and the greatly increased facility given to the operative in
regulating the working of the loom.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Bolton in the Great Seal Patent Office on the
20th January 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
BOLTON, of Blackburn, in the County of Lancaster, Overlooker of Power
Looms, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of July, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twenty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Richard Bolton, Her special licence that I, the said Richard Bolton, my
executors, administrators, and assigns, or such others as the said Richard
Bolton, 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 "AN IMPROVED MODE
OF WEIGHTING THE YARN-BEAM IN LOOMS USED IN THE MANUFACTURE OF CLOTH BY
STEAM POWER," upon the condition (amongst others) that I, the said Richard
Bolton, 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.
NOW KNOW YE, that I, the said Richard Bolton, do hereby declare the
nature of my 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 accompanying Drawing shews so much of an ordinary power loom with

page_text: the Invention applied thereto as is necessary for the purpose of explaining the
Invention, and in such Drawing similar parts are marked or referred to by
similar letters. A is the yarn-beam at the back of the loom; B, B, are the
beam necks round which I pass the cords or chains C, C, two or three turns,
and then pass them round the pullies D, D, and fusten them to the hooks of
the levers E, E. Two pullies may be used at each side instead of one, thereby
increasing the leverage. F, F, are weights of ten pounds or upwards, according
to the quality of the cloth to be woven and the amount of pressure desired.
These weights hang upon the levers E, E, and are moveable for the purpose
of regulating the pressure, by increasing or decreasing it at the pleasure of the
operative. The other ends of the cords or chains C, C, may be attached to
springs, such as are at present in use. The advantages to be derived from
this Invention consist of the dispensing with the large and cumbrous weights
at present in use, the improved steadiness in working, and strength of cloth
obtained, and the greatly increased facility given to the operative in regulating
the working of the loom.
In witness whercof, I, the said Richard Bolton, have hereunto set
my hand and seal, this Nineteenth day of January, in the year of
our Lord One thousand eight hundred and fifty-eight.
RICHARD BOLTON. (L.S.)
Signed, sealed, and delivered by the
within-named Richard Bolton, in
the presence of,
JOHN HARGREAVES KAY,
Solicitor and Patent Agent,
Blackburn.