IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1863

page_text: LETTERS PATENT to Roger Lightbown, of Over Darwen, in the
County of Lancaster, Manager, for the Invention of "IMPROVEMENTS IN
LOOMS FOR WEAVING."
Sealed the 9th February 1864, and dated the 15th August 1863.
PROVISIONAL SPECIFICATION left by the said Roger Lightbown at
the Office of the Commissioners of Patents, with his Petition, on the
15th August 1863.
I, ROGER LIGHTBOWN, of Over Darwen, in the County of Lancaster,
Manager, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN LOOMS FOR WEAVING," to be as follows:-
My Invention relates to a method of regulating the tension of the yarn, and
consists in the employment of a moveable rest arranged to act in unison with
the friction rope of the yarn beam, whereby those two parts are mutually
dependent.
To explain the nature of my Invention, I will describe an arrangement I
at present adopt. Upon the yarn beam I mount a lever which carries the
rest at its upper end; this lever is provided with a spring which bears against
a fixed part of the loom and tends to force the rest outward. The friction
rope fastened at its lower end passes around the warp beam, and is at its upper
end attached to the moveable rest. When therefore there is a tendency for
the yarn to become tightened, the spring is compelled to give way, and tho.

page_text: friction rope is loosened, or if, on the contrary, the yarn tends to slackness, then
the spring forces the rest outward and the rope becomes tightened. The
friction rope I attach by passing it in and out of eyes formed in a fixed
part.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Roger Lightbown in the Great Seal Patent Office on the
18th February 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROGER
LIGHTBOWN, of Over Darwen, in the County of Lancaster, Manager, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifteenth day of August, in the year of our Lord One
thousand eight hundred and sixty-three, in the twenty-seventh year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Roger Lightbown, Her special licence that I, the said Roger Lightbown,
my executors, administrators, and assigns, or such others as I, the said
Roger Lightbown, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times there-
after 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
Roger Lightbown, 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
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 Roger Lightbown, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement and accompanying Drawings (that is to say) :-
My Invention relates to a method of regulating the tension of the yarn, and
consists in the employment of a moveable rest arranged so as to act in unison
with the friction rope.
Figs. 1 and 2 are side and end elevations of part of a loom constructed
According to my Invention. The warp beam is shewn at a, the axle of

page_text: which is provided with the usual friction rope b.
This rope is attached
at bottom to a short shaft c, which by being turned will cause the said.
rope to be drawn more or less tightly upon the warp beam, the said shaft
being retained in any desired position by a ratchet wheel and click d. The
rope b is attached at its upper end to a rod e, over which the warp threads f
pass, and for which it acts as a rest. The rod e is mounted on each side of the
loom in a lever g turning inward at its lower end and resting upon the axis
of the warp beam, upon which it is therefore capable of rocking. On each
side of the loom and attached to the framework thereof are springs as at h,
their upper ends bearing against the levers represented by g, so that the said
levers and consequently the rest e have a tendency to be forced outward.
Suppose there is a tendency of the yarn to become tightened, the springs h will
give way, and the rest e moving inward will loosen the friction rope upon the
warp beam, and the undue tension of the yarn will be corrected; on the other
hand, should a slackness of the warp take place, then the springs h will force
the lovers 9 and rest e outward, whereby the friction rope b will be tightened
upon the warp beam.
Another part of my Invention consists in a method of attaching the end or
ends of the friction rope; this is shewn at Fig. 2. The shaft, rod, or other
part to which it is attached is provided with two holes k, l, through the first of
which the rope is passed, and then back again through the other hole, and
thus a secure attachment is effected by a binding action.
Having thus described and ascertained the nature of my said Invention, and
the manner in which the same is to be performed, I desire it to be understood
that I claim, as secured to me under the above in part recited Letters
Patent,
Firstly, the employment of a moveable rest for the warp threads acting in
conjunction with the friction rope.
Secondly, the method of attaching an end or ends of the friction rope.
In witness whereof, I, the said Roger Lightbown, have hereunto set my
hand and seal, this Twelfth day of February, in the year of our Lord
One thousand eight hundred and sixty-four.
ROGER LIGHTBOWN. (L.s.)