IMPROVEMENTS IN SHUTTLES FOR WEAVING
Year: 1881

page_text: LETTERS PATENT to Samuel Tweedale, of Accrington, in the County of.
Lancaster, Foreman Mechanic, for an Invention of IMPROVEMENTS IN
SHUTTLES FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said Samuel Tweedale at the
Office of the Commissioners of Patents on the 3rd September 1881.
SAMUEL TWEEDALE, of Accrington, in the County of Lancaster, Foreman
Mechanic. "IMPROVEMENTS IN SHUTTLES FOR WEAVING."
This Invention consists in the constructing and applying to shuttles of looms for
weaving of improved apparatus, which in conjunction with the weft fork, stop the
loom when a float or imperfect shed is formed.
Shuttles constructed according to this my said Invention have applied thereto
near the "eye" a pin which serves as axle, on which a small wheel or perforated
disc having elongated boss is free to resolve, the rim of the wheel or disc being
milled. The weft is threaded or passed between the arms of the wheel, or through
one of the perforations of the disc, and thence through the eye of the shuttle as
ordinary. When a "float" or imperfect shed is formed, the traverse of the shuttle
being the milled rim of the wheel or disc in contact with the "ends" of warp not
properly shedded, so imparting rotation to the wheel or disc, whereon the weft is
wound upon or around the boss referred to and broken, the weft fork motion then,
by reason of the absence of weft, comes into operation and stops the loom. The
part of shuttle near the rim of the wheel or disc is slightly recessed or hollow, in
order that the warp ends of the float may bear upon and ensure rotation of the
wheel or disc.

page_text: Figs. 1 and 18 are plans of shuttle partly in section, having my improvements
applied thereto.
Fig. 2 is an elevation.
Figs. 3 and 4 are views of detached parts.
A is an ordinary shuttle; B, the cop of weft; C, the " eye" through which the
weft is passed. At D is a small wheel or disc mounted, and free to rotate on the
axis or cross pin E, the outer rim of the wheel D is milled or roughed, and the
shuttle is slightly recessed or hollowed out, as shewn at F; the weft thread G is
passed through or between the arms, or through one of the holes H of the wheel D,
thence through
eye" C of the shuttle; the latter is then ready for use in
"
"
ordinary way.
Whenever ends or warp threads are not properly raised, and a "float" would
be formed, such warp threads or ends, when the shuttle is thrown and is crossing,
bear upon the milled or roughed rim of the wheel D, imparting rotation to the said
wheel thereon; the weft thread from the cop B becomes wrapped or coiled around
the axis or pin E, and that portion of the weft thread which is in the "shed," is
by the momentum of the shuttle snapped and broken, whereon there being now no
weft thread across the ordinary weft grate the weft fork comes into operation, and
at once stops the loom, the float being thus immediately detected.
1
Having thus fully described the nature and particulars of this my said
Invention, together with the manner in which the same is to be or may be
performed or carried into practical effect, I would have it understood that what I
claim as my Invention is,-
The wheel D applied so as to be rotated or turned by the warp thread or
threads, and coiling the weft thread around the axis E in manner herein described
for purpose and as illustrated.
In witness whereof, I, the said Samuel Tweedale, have hereunto set my
band and seal, this First day of March, in the year of our Lord One
thousand eight hundred and eighty two.
SAMUEL TWEEDALE. (L.S.)