Improvements in Drawing Frames.
Year: 1898

page_text: Date of Application, 9th Dec., 1898
Complete Specification Left, 5th Sept., 1899-Accepted, 11th Nov., 1899
· PROVISIONAL SPECIFICATION.
Improvements in Drawing Frames.
We, JOHN MCQUEEN, of John Hetherington and Sons Limited, of Vulcan
Works, Manchester, in the County of Lancaster, Machine Maker, and DYSON
BARKER, of the same Firm's Phoenix Works, Manchester aforesaid, Fitter,
do hereby declare the nature of this invention to be as follows:-
Our invention relates to an improved electric stop motion for drawing
frames, our objects being to simplify the mechanism for automatically stopping
the machine when the sliver is coming through too light or too heavy and to
dispense with the ordinary split wheels employed for driving the front calender
rollers from the back calender rollers.
In carrying out our improvements we make the front calender roller of any
suitable length, preferably each front calender is long enough to serve four
deliveries and we make the back roller of one diameter throughout and gear
the shafts of the front and back rollers together at each end in order to dis-
pense with the present arrangement of intermediate split wheels at every two
heads. To the hanging end of the ordinary pivoted balanced bell mouth we
pivot a tumbler which when the sliver is coming through regularly rests nor-
mally clear of a wire or rod forming part of an electric circuit but when a thin
or light sliver passes through the bell mouth its front end rises and the tumbler
comes in contact with the rod thereby completing the electric circuit and
stopping the machine.
To actuate the stop motion when the sliver is too large or heavy we form on
the tumbler a projection which normally rests below a light pivoted balanced
lever one end of which rests near the electric rod and the parts are so arranged
that when the bell mouth is drawn down by the extra weight of the sliver the
projection on the tumbler comes under and lifts the balanced lever and brings
its end into contact with the electric rod thereby completing the electric circuit
and stopping the machine.
H. B. BARLOW & GILLETT,
Agents for Applicants,
COMPLETE SPECIFICATION.
Improvements in Drawing Frames.
We, JOHN MCQUEEN, of John Hetherington and Sons Limited, of Vulcan
Works, Manchester, in the County of Lancaster, Machine Maker, and DYSON
BARKER, of the same Firm's Phoenix Works, Manchester aforesaid, Fitter,
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 follow-
ing statement:-
Our invention relates to an improved electric stop motion for drawing
frames, our objects being to simplify the mechanism for automatically stopping
the machine when the sliver is coming through too light or too heavy and to

page_text: dispense with the ordinary split. wheels employed for driving the front calender
rollers from the back calender rollers.
In carrying out our improvements we make the front calender roller of any
suitable length, and we make the back roller of one diameter throughout and
gear the shafts of the front and back rollers together at each end in order to
dispense with the present arrangement of intermediate split wheels at every
two deliveries.
In the accompanying two sheets of drawings-
Figure 1 is a plan of part of a drawing frame illustrating our improved
arrangement for gearing the calender rollers and Figure 2 is an elevation and
Figure 3 a transverse section of the calender roller stop motion.
In Figure 1 we show the calender rollers a a made long enough to serve the
six deliveries 1, 2, 3, 4, 5, 6 which make up each head. The calender rollers
are made of uniform diameter throughout and are geared together at each end of
each head by gears 7.
The calender rollers may be made in sections of any suitable length to serve
any convenient number of deliveries, the improved electric stop motion herein-
after described which is applied to each delivery, enabling us to dispense with the
present arrangement of intermediate split wheels at every two deliveries.
In Figures 2 and 3,-a a are the calender rollers, the top plate or cover
and the ordinary balanced bell mouth or funnel which is pivoted at c and
forms part of an electric circuit.
We pivot to the funnel ca tumbler d, which, when the sliver is coming
through regularly, rests normally clear of a wire or rod e also forming part of
the electric circuit; but when a thin or light sliver passes through the funnel c
its front end rises and the tumbler d falling comes in contact with the rod e
thereby completing the electric circuit and stopping the machine.
To actuate the stop motion when the sliver is too large or heavy we form
on the tumbler d a projection which normally rests below a light balanced
lever pivoted at g; one end of the lever f rests near but normally clear of the
rode and the other end is weighted with an adjustable weight h. The parts
are so arranged that when the funnel c is drawn down by the extra weight of
the sliver the tumbler d is raised and the projection thereon comes under
and lifts the weighted end of the balanced lever and so brings its other end
into contact with the rod e thereby completing the electric circuit and stopping
the machine.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
1. Dispensing with the ordinary intermediate split gears employed for driving
the front calender rollers from the back calender rollers and instead making
the calender rollers in sections of suitable length and the back calender roller of
one diameter throughout and gearing the shafts of the front and back rollers.
together at each end substantially as herein described and as illustrated.
2. The combination with the ordinary pivoted balanced bellmouth or funnel,
of the tumbler, balanced lever and electric rod for the purpose of completing an
electric circuit and automatically stopping the machine when the sliver is com-
ing through too light or too heavy substantially as herein described and as
illustrated by the drawings.
Data L
1000
H. B. BARLOW & GILLETT,
Agents for Applicants, 17, St. Ann's Square, Manchester.