IMPROVEMENTS IN LOOMS WEAVING
Year: 1871

page_text: FOR
LETTERS PATENT to John Ormerod, of Whaley Bridge, in the County
of Chester, for the Invention of "IMPROVEMENTS IN LOOMS
WEAVING."
Sealed the 28th July 1871, and dated the 9th February 1871.
PROVISIONAL SPECIFICATION left by the said John Ormerod at the
Office of the Commissioners of Patents, with his Petition, on the
9th February 1871.
I, JOHN ORMEROD, of Whaley Bridge, in the County of Chester,
do hereby declare the nature of the said Invention for “ IMPROVEMENTS
IN LOOMS FOR WEAVING," to be as follows: -
My Invention relates to mechanism for "letting off" the warp from
the beam in looms for weaving, and consists in improvements upon the
arrangement and combination of mechanism for this purpose described
in the Specification of a Patent granted to me, No. 1265, dated the
Third May One thousand eight hundred and seventy, according to which
Invention the "back rest" for the warp is mounted on weighted levers

page_text: or arms or upon the end of springs, and these levers or arms or the
springs are connected with one end of the cord, rope, or chain that
passes round the end of the yarn beam so as to ease or tighten the cord,
rope, or chain, and thus release or hold the beam according to the
position of the back rest.
My present improvements consist in connecting the levers, arms, or
springs carrying the back rest with both ends of the cord, rope, or chains,
so as to act upon each end simultaneously, and thus make the arrangement
more sensitive. I prefer to connect the lower end of the cord, rope,
or chain from the beam to one end of a lever having its fulcrum on
the frame, and the other end of this lever with the back rest by a rod,
the other end of the cord, rope, or chain, being connected directly
to the lever or spring as described in the Specification of my said
Patent.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Ormerod in the Great Seal Patent Office on
the 4th August 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
ORMEROD, of Whaley Bridge, in the County of Chester, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of February, in the year of
our Lord One thousand eight hundred and seventy-one, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said John Ormerod, Her special licence that I,
the said John Ormerod, my executors, administrators, and assigns, or
such others as I, the said John Ormerod, 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
Ormerod, by an instrument in writing under my hand and seal, 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 Ormerod, 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 Drawings (that is to say) :-
My Invention relates to mechanism for " letting off" the warp from
the beam in looms for weaving, and consists in improvements upon the
arrangement and combination of mechanism for this purpose described
in the Specification of a Patent granted to me No. 1265, dated the Third
day of May, in the year of our Lord One thousand eight hundred
and seventy, according to which Invention the "back rest" for the warp
is mounted on two weighted levers or arms, or upon the ends of two
springs, and these levers or arms or the springs are each connected with
one end of the cord, rope, or chain that passes round the end of the
yarn beam, so as to ease or tighten the cord, rope, or chain, and thus
release or hold the warp beam according to the position of the back
rest.
My present improvements consist in connecting the levers, arms, or
springs carrying the back rest with both ends of the cords, ropes, or chains
(there being one at each end of the beam) so as to act upon each end
simultaneously and thus make the arrangement more sensitive. I
prefer to connect the lower end of the cord, rope, or chain from the
beam to one end of a lever having its fulcrum on the frame, and the
other end of this lever with the back rest by a rod, the other end of
the cord, rope, or chain being connected directly to the lever or spring
as described in the Specification of my said Patent.
Fig. 1 is a side elevation, and Fig. 2 a back elevation illustrating my
improvements.
a, framing of the loom; b, yarn beam; c, the back rest, over
which the warp threads pass; d, the two springs (secured to brackets
from the side frames) which carry the back rest; e are eye bolts which
may each pass through parts secured to the springs, and these bolts are
provided with wing nuts f for regulating the tension. The eye bolts
are each connected with a cord, rope, or chain g; that passes round the
end of the beam, the other end of each of these cords, ropes, or chains
is attached to one end of a lever / having its fulcrum on a bracket i
secured to the back cross rail of the framing. The other end of cach

page_text: of the levers is connected by a rod / with the back rest c as shown.
With this improved arrangement when the back rest is but slightly
depressed by an increased tightness of the yarn passing over it both
ends of the cords, ropes, or chains g are simultaneously slackened to
a corresponding extent, and the warp beam is allowed thereby to rotate
and give off yarn sufficient to ease the slight increase of tension upon it
and thus deliver the warp as required.
I have now particularly described the nature of my Invention and the
mode of carrying it into effect, and claim as my Invention, the com-
bination of a warp beam 6 and back rest c mounted on springs or
yielding levers with friction cords, ropes, or chains g upon the ends
of the warp beam, so that the movement of the back rest (c) will
simultaneously tighten or slacken both ends of the said cords, ropes,
or chains g, substantially as and for the purpose herein before
described.
In witness whereof, I, the said John Ormerod, have hereunto set
my hand and seal, this Twenty-fourth day of July, in the year
of our Lord One thousand eight hundred and seventy-one.
JOHN ORMEROD. (L.S.)