IMPROVEMENTS IN MECHANISM FOR EFFECTING THE BACKING OFF AND DRAWING UP OF SELF-ACTING MULES AND TWINERS FOR SPINNING AND DOUBLING
Year: 1884

page_text: We JOHN THOMPSON, of the firm of Messieurs Curtis, Sons and Company, of
the Phoenix Works, Chapel Street, Manchester, in the County of Lancaster,
Machine Maker and JoпN WAIN, of the same Place, Foreman, do hereby declare
the nature of said Invention for IMPROVEMENTS IN MECHANISM FOR EFFECTING
THE BACKING OFF AND DRAWING UP OF SELF-ACTING MULES AND TWINERS FOR
SPINNING AND DOUBLING and in what manner the same is to be performed, to bo
particularly described and ascertained in and by the following statement :-
Our Invention relates to those mules and twiners in which a separate band or
belt is used for driving the mechanism for backing off and for drawing up the
carriage our object being to provide apparatus to tighten the band that drives the
side shaft, to vary the speed and to increase the power of the driving.
To accomplish this we fit on the side shaft parallel to the rim shaft a pinion
which gears into the backing off wheel and is fixed on the boss of a wheel,
preferably an internally toothed wheel, into this wheel gears a pinion or change
wheel which we fix on one end of a short shaft that turns in a boss on a lever
(whereby the tension of the band is regulated) which has its fulcrum at the
end of the side shaft: at the other end of the short shaft is fixed a pulley that is
driven by a band or strap from a pulley on the counter shaft. We prefer to make
these pulleys three groove pulleys to vary the speed.
In applying our Invention to mules for spinning hosiery yarn and other yarns
which require the speed of the backing-off to be varied we employ the old
arrangement of pinions and carriers at the front of the inain driving pulleys for
driving the cam shaft and drawing up and use our improved mechanism for driving
the backing off only.
And in order that our Invention may be fully understood and readily carried
into effect we will proceed to describe the accompanying Sheet of Drawings,
reference being had to the Figures and letters marked thereon.
Fig. 1 is an end view and Fig. 2 is a side elevation of part of the headstock of
a mule or twiner to which our Invention is applied.
a is the rim shaft on which turns the backing-off wheel b into which gears the
pinion c fixed on the boss of the internally toothed wheel d on the shaft c: ƒ is a

page_text: bracket which forms one of the bearings for the shaft e and on this bracket is
formed a quadrant g through the slot in which passes a bolt secured to the lover h
pivoted on the shaft e. On the lever h is a boss i through which passes a shaft j
on which are fixed the pinion k gearing into the wheel d and the pulley which is
turned by a band passing over a pulley on the counter shaft m.
When it is necessary to tighten the band the lever is moved downward and
fixed in the desired position by the bolt which passes through it and through the
quadrant g.
By the use of our Invention we can tighten the band without stopping the
machine, we are enabled to drive from a large pulley on the counter shaft and we
can readily change the speed by moving the band from one groove of the pulley
to another and we gain great power by the pinion k. We thus ensure positive
driving and avoid all slipping of the band.
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
wo claim is
1. The improvements in mechanism for effecting the backing off and drawing
up. of self-acting mules and twiners, substantially as herein described and as
shown.
2. The combination with the pulley of the pinion k and wheel d as and for
the purnoses herein set forth.
JOHN THOMPSON.
JOHN WAIN.
H. B. Barlow,
Agent for Applicants,
17, St. Ann's Square, Mancheste