IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1863

page_text: PROVISIONAL SPECIFICATION left by William Forrest and Hindle
Duckworth at the Office of the Commissioners of Patents, with their
Petition, on the 81st March 1863.
We, WILLIAM FORREST, Cotton Spinner, and HINDLE DUCKWORTH, Machinist,
both of Blackburn, in the County of Lancaster, do hereby declare the nature
of our said Invention for "IMPROVEMENTS IN LOOMS FOR WEAVING," to be as
follows:-
Our Invention relates, firstly, to the traverse of the slay or lathe which in
looms as usually constructed has been hitherto uniform, the traverse or sweep
of the lathe being determined by the amount of bend or crank in the crank
shaft (and position of crank shaft) and the crank arms working thereon, the
other end of the crank arms being attached to lugs on the sword arms, or to
lugs or fixings attached to the back of the lathe or slay.
Our improvements consist in the arranging the bearings which carry the
ends of the crank arms working the sword arms, or lathe, or slay, in such a
manner as that their positions may be altered by raising or lowering them at
pleasure, by which means we are enabled to regulate the traverse of the lathe
or slay in order to accommodate the loom to different kinds of goods and
qualities of yarn. The Invention herein described may readily be applied to
existing looms by simply attaching moveable bearings to the lathe, or slay, or
to the sword arm, as described.
Another method of carrying out the object of this Invention is as follows:-
At the back of the sword arms and in suitable position we attach or cast to

page_text: the said arms a rib or projection, through which are a number of holes; these
holes are made at a suitable distance apart the whole length of the rib or pro-
jection; the end of the crank arm (which is to be attached to sword arm) is
formed so as to clip or span the rib or projection on the sword arm, and is
attached thereto by means of a pin being passed through a hole in the clip on
the end of the crank arm, and through one of the holes in the rib or projection
on the sword arm; the traverse of the lathe or slay will be decreased or
increased accordingly as we attach the ends of the crank arms to the higher or
lower holes in the ribs or projections on the sword arms; we thus regulate the
traverse of the lathe at pleasure.
The second part of our Invention relates to the "wing," which in looms as
heretofore constructed requires lifting over the "frog" at each and every pick,
except in case of concussion, or when from any cause the shuttle does not
"shed" properly. Our object is to dispense with the usual lifting of the wing,
by which means we are enabled to run a fast reed loom as quick or pick as
often as with a loose reed loom, which we effect as follows:-On the end of
the stop rod we affix a lever, which projects in the direction of the breast
beam, and on the end nearest thereto is a lug or projection inclined at its end
(nearest the stop rod) to a suitable angle; immediately under this lug or pro-
jection is a bowl or pulley working on a stud fixed to the loom side. On tho
backward traverse of the lathe or slay the lug or projection slides on the
bowl or pulley carrying the wing over and clear of the "frog," except when
from any cause the shuttle does not shed properly, in which case the finger or
lever at the back of the lathe or slay drops, the wing falling and coming in
contact with the frog stops the loom as usual.