IMPROVEMENTS IN OR APPLICABLE TO DOUBLING FRAMES
Year: 1884

page_text: I JOSEPH HIGGINSON of 4 Houldsworth Street, Reddish in the County of
Lancaster Assistant Manager, do hereby declare the nature of my Invention for
"IMPROVEMENTS IN OR APPLICABLE TO DOUBLING FRAMES," to be as follows:-
This invention relates to an arrangement of Mechanism applied to Doubling
Frames whereby the delivery of the yarn is stopped, self-actingly, immediately an
end breaks, and thus the making of waste is prevented.
In carrying out my invention I mount a wedge of leather or other suitable
material upon one arm of a lever, pivoted to the cap-bar in any convenient
manner; and the longer arm of which lever is supported by the yarn end,"
which descends to the bobbin so long as the same remains intact and unbroken.
When the "end" breaks the support given to the long arm of the lever by the
yarn is taken away and, consequently, as such lever falls it permits the wedge to
be drawn in between the revolving surfaces of the top and bottom rollers, and thus
the top roller is stopped revolving,-hence the yarn ceases to be delivered and
waste is so prevented.

page_text: I JOSEPH HIGGINSON of 4 Houldsworth Street Reddish in the County of
Lancaster Assistant Manager do hereby declare the nature of my Invention for
IMPROVEMENTS IN OR APPLICABLE TO DOUBLING-FRAMES and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
This Invention relates to an arrangement of mechanism applied to doubling-
frames whereby the delivery of the yarn is stopped self-actingly immediately an
end breaks and thus the making of waste is prevented.
"
In carrying out my invention I mount a wedge of leather or other suitable
material upon one arm of a lever pivoted to the cap-bar in any convenient
manner and the longer arm of which lever is supported by the yarn "end"
which descends to the bobbin so long as the same remains intact and unbroken-―
When the end" breaks the support given to the long arm of the lever by the
yarn is taken away and consequently as such lever falls it permits the wedge to be
drawn in between the revolving surfaces of the top and bottom rollers and thus
the top roller is stopped revolving-hence the yarn ceases to be delivered and
waste is so prevented.
And in order that this my said invention may be the more readily understood
and carried into practical effect. I have hereunto annexed a sheet of drawings
illustrative of my improvements applied to the rollers of Doubling Frames for
coarse and fine counts.
Fig 1. represents the arrangement as applied to coarse counts A and A¹ are the
delivery rollers the top delivery roller A¹ being driven as usual by resting in
frictional contact with the lower roller A B is the lever formed by preference of
wire and pivoted to any convenient part C. of the cup bar. This lever carries or
is pivoted at its upper extremity to the wedge D formed of leather india-rubber or
other suitable flexible material and the front part of which wedge D rests on the
roller A. The other end of the longer arm of the same lever is supported by the
yarn a.
The action is as follows:-So long as the yarn a remains intact the lever B.
remains in the position indicated but upon breaking of the said yarn the lever by
the simple action of gravity makes a partial revolution upon its fulcrum or axis C.
in the direction of the arrow and thus the wedge D is carried forward and being
nipped between the rollers so raises the upper roller A¹ out of frictional contact
with the lower roller A. and thus arrests its motion-hence the yarn ceases to be
delivered and waste is prevented.
In cases where the yarn is weak as in working fine counts, a heavy drag is
inadmissible and the tension of the yarn is insufficient to hold up the lever in its
place. Again if the lever be so adjusted has to be supported by the yarn in this
state of light tension, it is found to bo uncertain in its action from the presence
of water, dirt and etc. which tend to clog the pivot C. and prevent its rotation on
the breaking of the yarn. To overcome this difficulty I cause the lever retained in
position by the tension of the yarn to rest on the bottom roller in such a manner
that the friction between the two sets up at once tending to bring the wedge into
action and this force is counterbalanced by the tension of the yarn.
For adjustment of this friction I add a small auxiliary weight by which the
friction can be increased or diminished at will,

page_text: Fig 2 illustrates the application of my improved Lever and flexible wedge to a
frame doubling fine counts a and a are the delivery rollers and b is the lever
working upon the fixed centre or fulcrum c. One extremity of this lever being
fitted with an adjusting weight d by means of which the friction can be adjusted
to the greatest nicety and the other extremity of the same lever being pivoted at e
to the flexible wedge f and which also rests upon the lower roller a as herein-
before described in reference to Fig 1. To this same wedge is further pivoted an
arm g. which also rests with its heel h upon the lower roller a and over the front
extremity of which arm the yarn j. passes as illustrated. The action of this
arrangement is as follows: Upon the breaking of the yarn j the said lever b and
arm g move under the action of the weight d and the friction of the heel h. The
lever b describes a curve around its fulcrum c and the front extremity i of the
arm g describes a curve which is the resultant of the movement of the point or
pivot e upon the fixed centre c of the heel h around the surface of the roller a and
of the circular motion of the front extremity i upon its centre or pivot e.
The curvature of the curve performed by i and its inclination to the direction of
the yarn j. can be varied-by varying the position of the point e or the length of
the upper arm of the lever b or the length of the arm g. as also by varying the
distance of the heel h from the point e or the position of its point of contact with
the roller a.
It is obvious that the movement of i is considerably greater than the movement
The ratis between the movements of these points can be varied in the same
manner as the curvation and inclination of the curve.
of e.
In practice it is found most convenient to move i at from 2 to 4 times the rate
of e.
The force required to be exerted by the yarn to balance the combination is
thus 2 to 4 times less than with the lever alone and the sensitiveness is increased
in three proportions.
When the roller a is at rest the arm g exerts no force on the yarn and it can
be so adjusted as only to begin to exert force on or to lift the yarn when the
roller attains maximum speed. It is evident therefore that no matter how slack
the ends are, on the stopping or starting of a frame the combination will not act-
and from this it will be apparent that the improvements herein before described
can easily be applied to frames working on the finest counts.
In conclusion I wish it to be understood that I make no claim to a lever apart
from the flexible wedge herein before described as a means of arresting the motion
of the top roller in doubling frames in case of a yarn breaking.
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed I declare that what
I claim is
1st The combination of a lever and flexible wedge mounted and operating
substantially as and for the purpose herein before described and illustrated on the
accompanying drawing.
2nd Pivoting the flexible wedge to the lever substantially as and for the purpose
hereinbefore described and illustrated on the accompanying drawing.
3rd As applied to doubling frames for doubling fine counts the combination of a
weighted lever flexible wedge and arm mounted and operating substantially as
and for the purpose hereinbefore described and illustrated on the accompanying
drawing.
Deted this 12th dow of Wohan 100r
JOHN G. WILSON,
Agent for Applicant.