A CIRCULAR POWER LOOM FOR WEAVING CIRCULAR, CYLINDRICAL, AND IRREGULAR SHAPED FABRICS
Year: 1854

page_text: LETTERS PATENT to Nathaniel B. Carney, of the City of New York, in
the United States of America, and a Citizen thereof, for the Invention
of "A CIRCULAR POWER LOOM FOR WEAVING CIRCULAR, CYLINDRICAL, AND
IRREGULAR SHAPED FABRICS."
Sealed the 2nd February 1855, and dated the 7th December 1854.
PROVISIONAL SPECIFICATION left by the said Nathaniel B. Carney at
the Office of the Commissioners of Patents, with his Petition, on the
7th December 1854.
I, NATHANIEL B. CARNEY, of the City of New York, in the United States
of America, and a Citizen thereof, do hereby declare the nature of the said
Invention for "A CIRCULAR POWER LOOM FOR WEAVING CIRCULAR, CYLINDRICAL,
AND IRREGULAR SHAPED FABRICS," to be as follows:-
This Invention relates to a novel construction or arrangement of mechanism
for circular weaving, wherein a continuous forward movement through the
shed is given to the shuttle or shuttles. The warp threads are drawn from
beams set round a central shaft, and after passing through eyes in sets of vertical
warp wires, also arranged round this shaft, they are attached to a "shape "

page_text: placed above the central shaft, and provided with pressing pieces, which lie
one above the other, and receive the ends of the warp threads between them.
The warp wires are notched to receive (severally) bolts, which secure them
temporarily to a fixed or a moveable frame. Those which are attached to the
moveable frame will be raised or depressed, so as to open the shed for the
passage of the shuttle; but those bolted to the fixed frame will remain
stationary, their lifting frame sliding freely over them. This lift of the warp
wires is effected by the rotation of a cam, which alternately raises and lowers
the sliding frames, to which the wires are temporarily attached.
The selection of warp wires is effected by means of pattern cylinders, the
projections from the periphery of which actuate (as the cylinders are slowly
rotated) a series of short rocking levers. These levers, as they are severally
actuated, withdraw or thrust forward the bolts, with which they are respectively
connected, and thereby severally lock the wire opposite to them, either to the
fixed or movable frame, by which means a selection of wires is made, similar
to the operation of the jacquard apparatus. The rotation of the pattern
cylinders is effected by means of clicks, which are actuated by an arrangement
of cams and slides. The shuttles run in a circular race, and are driven by
pinions, taking into a segment rack, with which the shuttles are provided.
The end of each weft thread is passed through an eye in the end of an arm
or finger carried by its shuttle, and the weft threads are then connected
together. A following pressing roller is employed (carried by this arm) for
pressing up the weft thread as it is delivered into the shed. Expanding pressers
or concentric annular weights are also employed for keeping the work in
contact with the shape, and a fusee barrel is employed for winding up the
suspension cord of the shape, and thereby raising the shape at a gradually
increasing rate.