OR IMPROVED APPARATUS FOR PREVENTING WASTE IN DOUBLING, FINISHING, AND SINGLING YARNS AND THREADS
Year: 1877

page_text: PROVISIONAL SPECIFICATION left by John Weir and Robert Weir at the
Office of the Commissioners of Patents on the 20th December 1877.
"
JOHN WEIR, of Elderslie, in the County of Renfrew, North Britain, and ROBERT
WEIR, of Paisley, in the County aforesaid. NEW OR IMPROVED APPARATUS FOR
PREVENTING WASTE IN DOUBLING, FINISHING, AND SINGLING YARNS AND THREADS."
This Invention which relates to new or improved arrangements of apparatus or
mechanisin for preventing waste during the processes of doubling, finishing, and
singling yarns and threads consists, as regards the apparatus employed on doubling
and finishing machines, of a bracket or framing carrying two rollers, one of which is
formed or provided with ratchet or other shaped teeth at one end.
On the framing and parallel with the longitudinal axis of the toothed roller are
a series of bars or rods, each of which is hinged or jointed at one end to the framing,
whilst its other extremity is situated within a guide fixed to the side of the bracket
or frame. At one end of the bracket or frame, another series of eyes or guides for
the yarns or threads are secured. The yarns or threads are passed from the bobbin
or pirn "bank" each through a separate guide or eye, and are thence conducted
under the bars or rods herein-before referred to, each thread or yarn being led under
a separate bar or rod. From the bars or rods the threads or yarns pass round the
plain roller, and thence round the roller provided with ratchet teeth as herein-before
set forth, from whence they are conducted to the winding bobbins or drums.
The tension of the threads or yarns in passing through the apparatus is such as
to maintain the free ends of the rods or bars herein-before described in a raised
position, that is to say, clear of the ratchet teeth of the roller, and thus when any
single yarn or thread of a series being doubled or wound on to one bobbin breaks,
the rod or bar under which that yarn or thread was passed drops into a ratchet
tooth of the roller, and stops the rotation of the bobbin or drum whereon the thread.
is being wound, and waste of thread or yarn is thus prevented.
The apparatus is so arranged that any one bobbin may be thus stopped without
stopping or retarding the rotation of the other bobbins in the machine.

page_text: In lieu of using a plain roller as herein-before described, a light rotating rod or
bar may be employed in conjunction with the ratchet toothed roller.
As regards apparatus for preventing waste in "singling" threads or yarns, the
Invention consists of a frame or bracket carrying a roller which is provided with
ratchet or other shaped teeth at one end. A rod hinged or jointed at one end to
the bracket, and at the other working free in a guide in proximity to the ratchet
or other shaped teeth is also used, and a guide through which the single thread or
yarn passes to the roller is further provided in the apparatus. From the guide the
yarn or thread passes twice round the roller, thence through the eye of another
guide on the winding frame, then under the free end of the hinged or jointed rod or
bar, from whence it is conducted to the bobbin whereon it is wound. The thread
or yarn passes under the rod or bar with sufficient tension to keep it raised clear of
the ratchet teeth on the roller, so that when the thread or yarn breaks between the
said roller and the winding bobbin, the rotation of the roller and bobbin is stopped
until the thread is again pieced together, and thereby waste of thread or yarn is
prevented.