Year: 1886

page_text: 1, ARTHUR TREDGOLD LAWSON of Hope Foundry, Leeds, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has for its object improvements in machinery for spinning yarns
from flax, hemp and other fibres and relates to machinery where a drag on the bobbin
required.
This apparatus consists of a revolving surface or friction plate mounted in its
bearing. On the outer edge it is formed as an ordinary pulley to be driven by a belt
or gearing.
This is driven at a fixed speed. Against this revolving friction plate, a
loose friction plate or surface is made to work and between the two surfaces leather
or other substance is used. Through the boss of the loose friction plato is fixed a
feather key and through the boss the traverse tube slides. This tube has a key-way
longitudinally, into which the feather key in the loose friction plate fits. Fixed at the
end of the traverse tube is a bobbin plate with a catch pin to hold the bobbin in the
process of the yarn being wound on from the flyer.
As the yarn on the bobbin increases more pressure is required against the loose
friction plate to retard the bobbin. This is obtained with an automatic arrangement by
a lever on a fulcrum. One end of this lever is pressed against the loose friction
plate, and the other end is connected with a swing lever on which is a weight.
This weight which causes the pressure upon the friction plate is made to slide on the
swing lever and the further it is set from the fulcrum of the lever the greater is the
pressure. Connected with the weight there is a rack or ratchet and the pair are moved
by a catch working in the teeth of the ratchet. The catch is actuated by the traverse
slide block and moves the weight a short distance outwards from the fulcrum at the
end of each traverse. By this arrangement the pressure is increased on the friction
plate at every traverse of the bobbin.
001L
December 1886
CARPMAEL & Co.,
Agents for the Applicant.

page_text: Improvements in Machinery for Spinning Yarns from Flax, Hemp,
and other Fibres.
I, ARTHUR TREDGOLD LAWSON of Hope Foundry, Leeds, in the County of York,
Engineer, 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 :-
This invention has for its object improvements in machinery for spinning yarns from
flax, hemp and other fibres and relates to machinery where a drag on the bobbin is
required.
This apparatus consists of a revolving surface or friction plate mounted in its
bearing. On the outer edge it is formed as an ordinary pulley to be driven by a belt
or gearing. This is driven at a fixed speed. Against this revolving friction plate, a
loose friction plate or surface is made to work and between the two surfaces leather
or other substance is used. Through the boss of the loose friction plate is fixed a
feather key and through the boss the traverse tube slides. This tube has a key-way
longitudinally, into which the feather key in the loose friction plate fits. Fixed at the
end of the traverse tube is a bobbin plate with a catch pin to hold the bobbin in the
process of the yarn being wound on from the flyer.
As the yarn on the bobbin increases more pressure is required against the loose
friction plate to "retard" the bobbin. This is obtained with an automatic arrange-
mont by a lever on a fulcrum. One end of this lever is pressed against the loose
friction plate, and the other end is connected with a swing lever on which is a weight.
This weight which causes the pressure upon the friction plate is made to slide on the
swing lever and the further it is set from the fulcrum of the lever the greater is
the pressure. Connected with the weight there is a rack or ratchet and the pair aro
moved by a catch working in the teeth of the ratchet. The catch is actuated by the
traverse slide block and moves the weight a short distance outwards from the fulcrum
at the end of each traverse. By this arrangement the pressure is increased on the
friction plate at every traverse of the bobbin.
Figure 1 is a side elevation with the framework in section of machinery constructed
as above described. Figure 2 is an end elevation of the same. Figure 3 shows the
bracket V separately.
A is the flyer fast on a hollow axis which turns in bearings in a block B and has
fixed upon it a band pulley or gear wheel C by which it can be driven.
D is the bobbin plate on a hollow axis or traverse tube E which passes through the
hollow axis of the flyer and is also supported by the spindle W.
F is a friction pulley or gear wheel on a hollow axis which is carried in bearings
in the block G. As shown in the drawing it is a band pulley and is driven by a band
which travels at a speed' somewhat less than the speed of the band which drives the
flyer.

page_text: H is a loose friction disc through which the traverse tube E passes. The boss
of this friction disc has a feather projecting inwards from the interior of its boss and
entering a key way cut lengthwise of the traverse tube.
The friction disc is as shown pressed against the face of the friction pulley F by a
lever 1-a disc of leather or such like material being interposed between the two
friction surfaces-The axis of the lever I is carried by a bracket V shewn separately
at Figure 3.
K is a slide to which the end of the traverse tube is coupled-L is a neb or tooth
projecting downwards from the slide and engaging with the traverse screw M in order
that the traverse tube may be moved to and fro by this screw which is revolved in any
ordinary manner.
The lever I which presses the friction disc against the friction pulley is at its lower
end coupled by a link to the short vertical arm of a lever N.
O is a weight mounted upon the longer and horizontal arın of this lever and capable
of being slidden along it P is a toothed rack extending from the weight-Q is a
pawl which engages with the teeth of the rack and is carried by an arm R which turns
freely around the axis of the lever N-S is a sliding rod coupled to the arm R and
acted upon by a spring T to draw the arm backwards away from the weight U is a
finger projecting from the rod S. The traverso slide as it is slidden to and fro strikes
against this finger and thereby shifts the rod S endwise and causes the pawl to shift
the rack and weight along the horizontal arm of the lever N.
In this way as the accumulation of yarn upon the bobbin increases in diameter the
drag or friction holding between the friction disc and its driving pulley is increased so
giving greater driving power so that the difference between the number of revolutions
made by the bobbin and by the flyer is gradually diminished or retarded."
«
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what I
claim is :-
1. The combination of the flyer driven at uniform speed the traverse tube of the
bobbin holder sliding through it traversed to and fro and rotated by a friction disc
through which it can slide the friction disc being pressed against a revolving friction
driving pulley through the centre of which the traverse tube passes and mechanism
for increasing the drag or friction holding between the friction disc and its driving
pulley as the yarn accumulates upon the bobbin.
2. The arrangement of the weighted lever for increasing the friction betweon friction
surfaces by which the bobbin is driven the weight being mounted upon a horizontal
arm of the lever and slidden along it by a pawl oscillated to and fro at each to and fro
movement of the traverse tube and the pawl being made to engage with a toothed
rack attached to the weight so as at each forward movement to move the rack and
weight outwards along the lever arm substantially as described.
3. The combination of machinery substantially as herein before described and
illustrated in the drawings annexed for spinning yarns from flax hemp and other
fibres.