IMPROVEMENTS IN MACHINERY OR APPARATUS FOR WARPING AND BEAMING YARNS OR THREADS
Year: 1871

page_text: PROVISIONAL SPECIFICATION left by James Briggs, Robert Willan,
and Doctor Lewis at the Office of the Commissioners of Patents,
with their Petition, on the 6th April 1871.
We, JAMES BRIGGS, Cotton Manufacturer, ROBERT WILLAN, and
DOCTOR LEWIS, Machinists, all of Blackburn, in the County of Lancaster,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN MACHINERY OR APPARATUS FOR WARPING AND BEAMING YARNS OR THREADS,"
to be as follows:-
This Invention has for its object the stopping or arresting the motion
of the machine when a thread or "end" breaks, and the apparatus for
effecting this is constructed as follows:-On the shaft of the yarn beam
is a disc having four projections or eccentrics, resting on and actuated
thereby is an upright rod. As the disc revolves a rising and falling
motion is imparted to the rod, the upper end of which is connected to
the arm of a crank; the crank is placed near the end of a cross shaft.
Two other cranks are employed in connection with this cross shaft, and
carry a cross rail or bar, to which they impart a 'to-and-fro" or
oscillating motion, so as to cause a projecting part of such cross rail
or bar to enter a groove cut in the back of the front expanding comb
"

page_text: rail, when and so long as the ends are unbroken. The ends or yarn is
passed from the crcel to the "needles" or hooks formed of twisted wire,
an cyc being formed in the centre of each wire, through which the
corresponding dent is passed; the opposite end of each needle forms
a loop, suspended from which is a short wire which hangs across the t
groove in the comb rail. The tension on the yarn draws down the front
part or open loop eye of the needles, at the same time raising clear or
" end" breaks;
above the groove the short and pendant wires when an
the tension being removed allows the front part of the wire to tilt
upwards, the opposite end being lowered the pendant wire crosses the
groove in the comb rail and prevents the oscillating bar entering
the groove, the effect of which is to limit the motion or action of tho
oscillating bar and rod, so that a finger attached to the upright rod
herein mentioned fails to clear the end of a lever working on a pin as
fulcrum, and actuated by a tappet on the beam shaft; the said finger
being by the lever forced against the spring handle, removing the same
from its notch, and the motion of the machine is arrested by the strap
being removed from the fast to the loose pulley by the strap fork
as ordinarily.
The needles, wires, or looks as above described are formed with an
eye through which the dents are passed, that is, such wires are supported
and held in position by the dents. The eye of the wire allows a slight
lateral "play" or motion, so that the yarn or ends adjust the wires to
their truc linc, and friction is reduced to a minimum.
The apparatus above described may readily be applied to existing
machines, and the work of "taking up" broken ends is greatly
facilitated, because as the beam fills and rises in its guides it does not
interfere with or inconvenience the attendant, as the ends and guido
are all readily accessible whether the beam contain more or less yarn.