Improvements in Yarn Winding Machines.
Year: 1899

page_text: Improvements in Yarn Winding Machines.
I, JAMES CLARK, Bennochy Works, Kirkcaldy, Scotland, Mill Manager, do
hereby declare the nature of this invention to be as follows:-
These improvements relate to an improved means of dragging the yarn as it
is being unwound from the bobbin, to form cops or rolls.
The motion of the bobbin from which the yarn is being unwound to form the
cop or roll is controlled by a combined spring & weight drag or brake, which
consists of a palm pressed against the yarn on the bobbin being unwound by
means of a spiral spring & angled weighted lever, the weight on the lever
being adjustable so as to give the amount of drag required; the spiral spring
intervening between the palm in contact with the yarn to be unwound & the
weighted angle lever, the palm yields to the inequalities of the bobbin surface
& allows the yarn to be unwound without any jerk or strain.
The weighted lever acting on the spring is set at such an angle so that when
the bobbin to be unwound is full of yarn the spring is made to exert its greatest
pressure; & as the bobbin decreases in diameter the angle of the weighted lever
varies so that the pressure of the spring decreases & thus a uniform & steady drag
is obtained during the unwinding of the yarn from the bobbin.
By the use of these means the yarn can be unwound at a higher speed than
formerly & a more perfect cop or roll can be obtained.
Dated this 10th day of March 1899.
JAMES CLARK,
Applicant.
Improvements in Yarn winding machines.
I, JAMES CLARK, Bennochy Works, Kirkcaldy, Scotland, Mill Manager, do
hereby declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
These improvements relate to an improved means of dragging the yarn as it
is being unwound from the bobbin to form cops or rolls.
The motion of the bobbin from which the yarn is being unwound to form the
cop or roll is controlled by a combined spring and weight drag or brake which
consists of a palm pressed against the yarn on the bobbin being unwound by
means of a spiral spring und angled weighted lever the weight on the lever
077

page_text: being adjustable so as to give the amount of drag required. The spiral spring
intervening between the palm in contact with the yarn to be unwound & the
weighted angled lever, the palm yields to the inequalities of the bobbin surface
& allows; the yarn to be unwound without any jerk or strain,
(
The weighted lever acting on the spring is set at such an angle so that when
the bobbin to be unwound is full of yarn the spring is made to exert its greatest
pressure on the palm & as the bobbin decreases in diameter the angle of the
weighted lever varies so that the pressure.of.the spring & weight decreases &
thus a uniform & steady drag is obtained during the unwinding of the yarn
from the bobbin.
"
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By the use of these means the yarn can be unwound at a higher speed than
formerly & a more perfect cop or roll can be obtained:
r
Such being the nature & object of my said invention the following is a complete
description of same reference being had to the accompanying drawings in
which
Fig. I is an elevation of such parts of a cop-winding frame as are necessary to
illustrate the application of my improvements.
Fig. II is a top view of the yarn bobbin & its drag shewn in Fig. I.
To ensure the necessary tension or drag on the yarn during the unwinding
from the bobbin 1 to & upon the cop 2, the pressure of palm 3 on the yarn when
the bobbin is full & the pressure on the yarn when the hobbin is nearly empty
must be constantly & proportionally altered.
The end of the palmi 3, which bears on the yarn on the bobbin 1, is carried
& supported in a socket 4 said socket having a spiral spring 5 which engages
the end of palm 3, a weighted adjustable lever 6 centred at 8 passes through a
slot 7 in the socket 4 the lever exerts its greatest pressure on the socket & through
the spiral spring & palm to the bobbin when the bobbin is full & a gradually
decreasing force as the bobbin decreases in diameter by reason of the change of
angle of the weighted lever.
.
The spring 5 in the socket 4 yields to the inequalities of the surface of the
yarn without causing the palm, socket, or weighted lever, to vibrate.
The bobbin board 9 which is adjustable by hand is carried by means of a
radial bracket 10 which is carried by and radiates on the rod 12 and held in
position by the set screw so that the bobbin board can be set and fixed at any
angle to increase or diminish the pressure exerted by the weighted lever 6.
Having now particularly described and ascertained the nature of my said
invention & in, what manner the sanie is to be performed, I declare that what
I claim is:
I. The general construction, arrangement, & combination of parts illustrated
by Figs. I & II of annexed drawings.
II. A spring drag acting on the yarn on a bobbin actuated by a weighted lever
placed at an angle all in combination and is herein, fully described.
Dated this 18th day of November 1899.
"JAMES CLARK,
Applicant.