IMPROVEMENTS IN APPARATUS TO BE USED IN CON- NECTION WITH SHUTTLES AND THEIR RACES FOR PREVENTING FLOATS' IN WEAVING
Year: 1871

page_text: PROVISIONAL SPECIFICATION left by William Robert Lake at the
Office of the Commissioners of Patents, with his Petition, on the
16th November 1871.-A communication from abroad by Thomas
Isherwood, of Stonington, Connecticut, United States of America.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent
Agents, Southampton Buildings, London, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN APPARATUS TO BE USED IN CON-
NECTION WITH SHUTTLES AND THEIR RACES FOR PREVENTING FLOATS' IN WEAVING,"
a communication, to be as follows:-
The object of the present Invention in the weaving of cloth is to
prevent the formation of the "floats" frequently produced by an
imperfect warp shed, the presence of extraneous matter or other
obstructing cause.
The said Invention consists in causing an automatic stoppage of the
loom by the action of an imperfect warp shed, a presence of extraneous
matter or other obstructing cause in the warp thread upon a trigger located
on the shuttle, which causes a pin to project from one side of the shuttle,

page_text: and so actuates mechanism arranged upon the shuttle race (more parti-
cularly the shuttle box thereof), as in the throw of the batten or lathe
frame to properly move the shipper to stop the loom.
The shuttle at and within one side is provided with an upright trigger
encased by a fixed plate and hung upon a fulcrum, and projecting by its
upper end to the upper side of the shuttle. This trigger bears upon the
free end of a lever arranged lengthwise within the shuttle, and turning
upon a fulcrum. This lever in turn rests upon the inner end of a rod
constructed and arranged transversely within the shuttle body as
follows: The rod is rounded off at the end, and at the back has a
shoulder from which the rod is made of smaller diameter; at its other
end it is for a portion of its length made square with shoulders, and with
a hook or notch between the shoulders.
The hole of the shuttle to receive the rod extends entirely through
the shuttle body, and through the encasing plate below the plane of the
lever; the said hole is of a square shape corresponding with the square
portion of the rod. The hole of the shuttle midway or nearly so between
its two open ends is made with a shoulder against which the coiled
spring around the aforesaid rod comes to a bearing when inserted in the
hole. The hook of this rod interlocks with the enclosing plate, and is
held by a bent spring bearing the rod upward, the lever resting upon the
rod inside of the enclosing plate.
In connection with the above construction of the shuttle the shuttle
box is constructed and provided with mechanism as follows:-A hole or
opening is made in one side of the shuttle box. Within this hole one end
of an angular lever hung upon a fulcrum outside of the shuttle box fits,
filling the same flush or nearly so with the inner face of the shuttle box.
This lever by a bent spring is held within the opening of the shuttle box,
and at its free end outside of the shuttle box is made of a hook shape
holding an angular lever by an upright arm. Pushing the end of the
angular lever through the hole in the shuttle box sets free the other lever,
which then falls in, which position as the batten or lathe frame swings
it will abut against an arm on the shipper, moving it in the proper
direction to stop the loom.