IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1873

page_text: LETTERS PATENT to John Smith, of Bradford, in the County of
York, Mechanical Engineer, for the Invention of "IMPROVEMENTS
IN LOOMS FOR WEAVING."
Sealed the 5th September 1873, and dated the 24th May 1873.
PROVISIONAL SPECIFICATION left by the said John Smith at the
Office of the Commissioners of Patents, with his Petition, on the
24th May 1873.
I, JOHN SMITH, of Bradford, in the County of York, Mechanical
Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN LOOMS FOR WEAVING," to be as follows:-
This Invention relates to the warp beam or to a means of regulating
the "let-off" or effecting an even or uniform delivery of the warp there-
from, and the improvements consist in applying (and fixing to the beam)
one or two vee (V) formed groove pulleys, and also a brake or brakes to

page_text: fit therein, pressed by a lever or levers actuated by and the pressure
adjusted according to the varying quantity of the warp on the beam
aided by a spring or springs.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Smith in the Great Seal Patent Office
on the 24th November 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
SMITH, of Bradford, in the County of York, Mechanical Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of May, in the year
of our Lord One thousand eight hundred and seventy-three, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said John Smith, Her special licence
that I, the said John Smith, my executors, administrators, and:
assigns, or such others as I, the said John Smith, 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 Smith, 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 John Smith, 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

page_text: following statement and accompanying Sheets of Drawings, that is to
say:
This Invention relates to the construction and application of improved
apparatus for regulating the "let-off," that is, securing an even and
uniform delivery of the warp from the warp beam, and the improve-
ments consist in applying (and fixing to the necks of the warp beam)
a V formed or grooved pulley and a brake or brakes, constructed so that
the under side thereof shall fit to and within the groove of the pulleys,
and be pressed therein by a lever or levers, and the pressure is adjusted
according to the varying quantity of the warp on the beam, aided by a
spring or springs. The brake is made of lead, vulcanite india-rubber,
wood, or wood faced with india-rubber, or other suitable material.
The Drawings hereunto annexed shew the construction and application
of the apparatus.
Fig. 1, Sheet 1, is an elevation of a warp beam, brakes and levers;
Fig. 2 is an end clevation of the same, enlarged; Fig. 3 is a detail
shewing one of the pulleys with brake and brake lever in section. A, A,
are the ordinary frames of the loom; B, B, tho necks of the warp beam
C; D, D, are grooved pulleys; within the groove of each is the brake
piece E attached to the brake lever F, and made to fit the groove as
shewn; the material employed for the brake pieces E, E, being lead,
vulcanite india-rubber, wood, or wood faced with india-rubber, leather, or
other suitable material; F, F, are the levers to which the brake pieces
E, E, are attached by means of the dovetail piece G, or otherwise
secured to the said lever. The levers are secured at the fulcrum end by
passing the end of the lever through an opening or aperture in the
fixing H; to the other or weighted ends of the levers are attached the
rods J, J, attached to the cross bar K, to which weight is applied by the
weighted lever and link L and M.
Fig. 4 is an elevation of the warp beam and spring for regulating the
beam to the varying quantity of yarn thereon. A is the frame end;
B, B, are the necks of the beam; D, D, are the pulleys; F, the brake
lever; K is the regulating spring; K' is a bracket through which the
rod L carrying the roller L' works; this roller bears on the rod L being
connected to the spring, so that when the beam is full the roller L' and
rod L will force down the spring K and so put extra weight on the rods

page_text: J, J, and friction on the pulleys D, D; as the beam decreases in diameter
this pressure on the spring and weight on the rods and brake is
gradually removed.
Fig. 5 shews application of my improvements to a loom having the
old or ordinary arrangement of weighting levers.
In witness whereof, I, the said John Smith, have hereunto set
my hand and seal, this Twenty-first day of November, in the year
of our Lord One thousand eight hundred and seventy-three.
Witness,
WALTER BRIERLEY,
Tasker & Brierley,
Patent Agents,
JOHN SMITH. (L.S.)
Halifax, Bradford, & Blackburn.