IMPROVEMENTS IN SPINNING, AND IN MACHINERY OR APPARATUS CONNECTED TIIEREWITH."
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by William Henry Thorpe and William
Daniel Thornton at the Office of the Commissioners of Patents on the 14th
February 1880.
WILLIAM HENRY THORPE, of Sowerby Bridge, in the County of York, Engineer's
Agent, and WILLIAM DANIEL THORNTON, Dyer, Bradford, in the aforesaid County.
IMPROVEMENTS IN SPINNING, AND IN MACHINERY OR APPARATUS CONNECTED
TIIEREWITH."
ft
This Invention relates to fitting to spinning frames, either for flyer or cap, an
apparatus so situated and actuated that when a thread breaks or has not sufficient
tension, the progress of the roving towards the front rollers is stopped, and waste,
roller lapping, snarls, and doubles are prevented.
For this purpose we use and employ for each spindle an endless steel band which
is cut with teeth somewhat in the shape of the teeth of a saw; this band extends
the length of the incline of the frame, and works over friction rollers and between
flanges; the rollers work on pins fitted to brackets, which are secured on rails fitted
to the frames, and the endless steel band is actuated by a catch wheel, which is cast
or fixed on or to the bottom feeding back roller, and we make the bottom roller by
preference hollow and with flanges through which passes the bottom roller shaft, and
the roller is loose on the shaft, and is kept in gear when spinning with the shaft by
means of a small clutch ring which is cast on the side of the catch wheel; the clutch
ring is cut or made with teeth which are shaped the reverse way to the turning
movement of the bottom roller shaft; the clutch ring engages in the teeth of a small
clutch box which is secured to the shaft, and the ring is firmly kept in gear with
the teeth of the clutch box by means of springs fitted to the other end of the bottom
back roller; the catch wheel actuates the endless steel band.
The thread coming from the front rollers passes through an eye, or over a bent
end of a rod of a centred light lever, which turns on a pin or axis, and which is
secured in a bracket fixed or fitted to the framing; the back arm of this light lever
is weighted and made with a catch. Upon the breaking or slackening of the thread,
the pressure on the eye or bent wire is removed, which causes the weighted arm to
fall and bring the catch in contact with a tooth (or teeth if the catch is made
double) of the revolving steel band, stopping the band and consequently the revolving
of the catch wheel and bottom back roller, stopping the delivery of the roving, and
preventing waste. The teeth of the small circle and clutch being made the reverse

page_text: way of the revolving motion of the back roller shaft allow the revolving clutch to
pass over the teeth of the small circle and keep the stopped roller free from the
clutch, the springs forcing the teeth of the small circle again in gear with the teeth
of the clutch directly the spinning operations begin.
We may fit a plate on the bottom of the roving bobbin, and this plate is made
with a small circle in which are cut teeth, and which on the stoppage of the endless
steel band come in gear with the teeth of the band, stopping the roving bobbin and
delivery of the roving.