IMPROVE- MENTS IN LOOMS FOR WEAVING
Year: 1874

page_text: LETTERS PATENT to John Shuttleworth, of Keighley, in the County
of York, Foreman Mechanic, in employ of Messrs. J. and J.
Craven & Co., of Keighley aforesaid, for the Invention of "IMPROVE-
MENTS IN LOOMS FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said John Shuttleworth at
the Office of the Commissioners of Patents, with his Petition, on
the 3rd February 1874.
I, JOHN SHUTTLEWORTH, of Keighley, in the County of York, Fore-
man Mechanic, in employ of Messrs. J. and J. Craven & Co., of
Keighley aforesaid, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN LOOMS FOR WEAVING," to be as follows:-
This Invention relates to the construction of the crank arms of looms
in such manner as that wear and tear shall be compensated or adjusted
by self-acting means. The strap which secures the caps within which

page_text: the crank is received and works are provided at each end with a box or
casing, within which is a spiral spring, through which boxes or cases
and through the spiral springs is passed a bolt, the other end of which
is passed through the cranked ends of the strap of the slay sword end
of the crank arm.
The spiral springs applied as above described not only adjust the
necks to the cranks but at all times admit of expansion when from any
cause a sudden shock is given to the slay and connecting parts.
SPECIFICATION I pursuance or the conditions o
filed by the said John Shuttleworth in the Great Seal Patent Office
on the 3rd August 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
SHUTTLEWORTH, of Keighley, in the County of York, Foreman Mechanic,
in employ of Messrs. J. and J. Craven and Co., of Keighley aforesaid,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of February, in the year
of our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said John Shuttleworth, Her special licence
that I, the said John Shuttleworth, my executors, administrators, and
assigns, or such others as I, the said John Shuttleworth, 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 LOOMS FOR
WEAVING," upon the condition (amongst others) that I, the said John
Shuttleworth, 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

page_text: 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 John Shuttleworth, 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 and accompanying Sheet of Drawings (that is to
say):-
This Invention relates to the construction of the crank arms of looms
in such manner as that wear and tear shall be compensated or adjusted
by self-acting means. The strap which secures the caps within which
the crank is received and works are provided at each end with a box or
casing, within which is a spiral spring, through which boxes or cases
and through the spiral springs is passed a bolt, the other end of which
is passed through the cranked ends of the strap of the slay sword end of
the crank arm.
The spiral springs applied as above described not only adjust the
necks to the cranks, but at all times admit of expansion when from any
cause a sudden shock is given to the slay and connecting parts.
In order that this Invention may be more fully understood, I herein
give reference to an accompanying Sheet of Drawings of a crank arm
constructed according to my Invention.
Fig. 1 is an elevation; Fig. 2 is a plan; and Fig. 3 is a section taken
through the line A, B.
In Fig. 2c is the strap which secures the caps within which the crank
is received and works; this strap is provided at each end with a box or
casing D, within each of which is a spiral spring E. Through the box
or casing D and through the spiral spring E is passed a bolt F, the
end F¹ of which bears against the strap G of the slay sword end of the
crank arm, the ends of the said strap G being cranked or bent for that
purpose. The nuts H on the ends of the bolts F fastens the whole
together, whilst the spiral springs adjust the necks and at all times admit
of expansion or contraction when any sudden shock is given to the slay
and connecting parts.
Having thus described the nature of this my said Invention, and
shewn by Drawings how the same is to be performed or carried into
practical operation, I would have it understood that I claim, the con-

page_text: struction and use of the crank arms of looms for weaving, having self-
adjusting and compensating apparatus as herein described and illustrated
by Drawings.
In witness whereof, I, the said John Shuttleworth, have hereunto
set my hand and seal, this Thirty-first day of July, in the year 5
of our Lord One thousand eight hundred and seventy-four.
JOHN SHUTTLEWORTH. (L.S.)
Witness,
WALTER BRIERLEY,
Tasker & Brierley,
Patent Agents,
Halifax, Bradford, & Blackburn.