IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1881

page_text: LETTERS PATENT to George Lendrum and Thomas Beardsell, of Thongsbridge,
in the County of York, Manufacturers, and Sam Mitchell, of the same Place,
Engineer for an Invention of “IMPROVEMENTS IN LOOMS FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said George Lendrum, Thomas
Beardsell, and Sam Mitchell at the Office of the Commissioners of Patents
on the 7th February 1881.
GEORGE LENDRUM and THOMAS BEARDSELL, of Thongsbridge, in the County
of York, Manufacturers, and SAM MITCHELL, of the same Place, Engineer.
"IMPROVEMENTS IN LOOMS FOR WEAVING."
This Invention relates to looms in which rising and falling shuttle boxes are
employed for weaving woollen and other heavy goods.
The object of our Invention is to lower the shuttle boxes gradually or easy so as
to prevent the noise and wear and tear which now takes place when the shuttle
boxes are allowed to drop one box to another.
Our improvements consist in the employment of a friction or break pulley
attached to the top box lever, over which is passed a strap of leather or other
suitable material. One end of the strap of leather or other suitable material.
One end of the strap is fastened to a rigid part of the loom frame, and to the
other end a weight is attached. The friction pulley is placed over the centre of
the fulcrum of the said box lever, but by preference eccentric therewith, so that
when the shuttle boxes are lowered there is more frictional contact of the strap
upon the pulley than when the boxes are raised,

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filled
by the said George Lendrum, Thomas Beardsell, and Sam Mitchell in the Great
Seal Patent Office on the 6th August 1881.
GEORGE LENDRUM and THOMAS BEARDSELL, of Thongsbridge, in the County
of York, Manufacturers, and SAM MITCHELL, of the same Place, Engineer.
"IMPROVEMENTS IN LOOMS FOR WEAVING."
This Invention relates to looms in which rising and falling shuttle boxes are
employed for weaving woollen and other heavy goods.
The object of our Invention is to lower the shuttle boxes gradually or easy so as
to prevent the noise and wear and tear which now takes place when the shuttle
boxes are allowed to drop from one box to another.
Our improvements consist in the employment of a friction or break pulley
attached to the top box lever, over which is passed a strap of leather or other
suitable material. One end of the strap is fastened to a rigid part of the loom
frame, and to the other end a weight is attached.
In order that the Invention may be better understood we herein give reference
to the accompanying Sheet of Drawings illustrative thereof, wherein Fig. 1
represents end view of a loom with our improvements applied thereto, and Fig. 2
is side view of the pulley and strap. A is the crank shaft; B, the bottom box
lever, and C the top box lever connected together by rod D in the usual manner;
E'is the friction or break pulley fastened to the top box lever by set screws or
bolts e; and G is a strap passing over the said pulley, being fastened at one end H
to the lever I attached to the loom frame and having a weight J at its other end.
It will be seen that the pulley is fastened over the fulcrum of the said lever C, but
eccentric therewith, by which means the strap has more grip or more frictional
contact when the shuttle boxes K are lowered than when they are raised. By this
arrangement of apparatus the shuttle boxes are lowered easy and without "drop,"
consequently the noise and wear and tear occasioned by their being allowed to
drop from one box to another is avoided.
Having thus fully described and ascertained the nature and particulars of this
our said Invention, together with the manner in which the same is to be or may be
performed or carried into practical effect, we would have it understood that what
we claim is,
The employment of a break pulley placed eccentrically over the fulcrum of the
top box lever, for the purpose substantially as herein shewn and described.
In witness whereof, we, the said George Lendrum, Thomas Beardsell, and
Sam Mitchell, have hereunto set our hands and seals, this Fourth day
of August, in the year of our Lord One thousand eight hundred and
eighty one