Improvements in and relating to Self-acting Mules.
Year: 1890

page_text: Date of Application, 17th Mar., 1890
Complete Specification Left, 17th Dec., 1890-Accepted, 24th Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in and relating to Self-acting Mules.
I, GEORGE HARTLEY of Stubblefield House, Brierfield near Burnley, in the County
of Lancaster, Cotton Waste Spinner, do hereby declare the nature of this invention to
be as follows:-
This invention of improvements consists of a peculiar arrangement of parts for
automatically controlling or varying the speel of the spindles, while the machine is in
operation so as to relieve the yarn of superfluous twist at the commencement of the
draw; whereby the yarn is more evenly spun with less breakage in the stretch.
For this purpose two grooved driving pulleys of unequal diameters are employed
driven from one and the same rim band, and capable of engaging alternately with
friction cones fixed to the tin roller shaft.
At the commencement of the "draw" the larger driving pulley is thrown upon one
of the cones so as to drive the tin roller at a reduced speed and relieve the yarn of
superfluous twist after relieving the yarn the larger pulley is withdrawn, and the
smaller driving pulley thrown upon the other cone to increase the speed.
The shifting movement of the pulleys upon the tin roller shaft so as to engage them
alternately with the cones, may be effected by means of a lever on the carriage
coming during its traverse in contact with suitable inclined stationary guides.
Dated this 15th day of March 1890.
THOS. RICHMOND,
Awant
COMPLETE SPECIFICATION.
Improvements in and relating to Self-acting Mules.
1, GEORGE HARTLEY of Stubblefield House, Brierfield, near Burnley, in the County
of Lancaster, Cotton Waste Spinner, do hereby declare the nature of this invention
and in what manner the same is to be perforined, to be particularly described and
ascertained in and by the following statement:-
This invention of improvements consists of a peculiar arrangement of parts for
automatically controlling or varying the speed of the tin roller shaft, or the spindles it
actuates, while the machine is in operation, so as to relieve the yarn of superfluous
twist at the commencement of the draw; whereby the yarn is more evenly spun with
less breakage in the stretch. For this purpose, two grooved pulleys of unequal
diameters are employed, driven from one and the same rim-band, and capable of
engaging alternately with friction cones fixed to the tin-roller shaft.
At the commencement of the "draw," the larger driving pulley is thrown upon one
of the cones, so as to drive the tin-roller at a reduced speed and relieve the yarn of
superfluous twist. After leaving the yarn, the larger pulley is withdrawn and the
smaller pulley thrown upon the other cone to increase the speed.
The shifting movement of the pulleys upon the tin roller shaft so as to engage them
alternately with the cones may be effected by means of a lever on the carriage coming
during its traverse against suitable stationary guides.
In the accompanying drawings,
Fig. 1 is a sectional elevation taken through the centre of the carriage;
Fig. 2 is a front elevation; and Fig. 3 a plan of a carriage of a spinning nule
constructed in accordance with my invention.
Fig. 4 is a sectional elevation, on an enlarged scale, of two grooved driving pulleys
and their respective friction cones, mounted on the tin roller shaft.
A represents the carriage of a spinning mule; B and C, two grooved driving

page_text: .
pulleys, one larger in diameter than the other. The former is mounted loosely on the
tin-roller shaft D, and the other on the boss of the larger pulley B, as seen in Fig. 4.
Both pulleys are actuated by the rim-band E, which is made to partially embrace the
driving-pulleys B and C by means of guide pulleys F and G.
Each driving pulley is provided with a friction cone H and I respectively fixed to
the tin-roller shaft. The internal surface of the rim of each driving-pulley is of a
conical shape to correspond with its respective conc.
The shifting mechanism may consist of a vertical lever J, jointed to the horizontal
spring slide bar K as seen in Figs. 1 and 2; the said lever is attached to a horizontal
lever M by a loop link or bolt N. Immediately before the termination of the traverse
of the carriage in a backward direction, the horizontal arm or lever M is moved
laterally by the incline of the said lover coming in contact with stop-piece O, seen in
doited lines in Figs. 1 and 3, so as to shift the larger driving pulley upon its cone,
and thereby reduce the speed of the tin-roller shaft D. In this position, the larger
pulley is retained upon its cone by catch P (jointed to the vertical lever J) which
engages with the retaining bracket Q until the catch is withdrawn from the retaining
bracket, when the carriage is moving outwards, by means of cam lever R coming in
contact with an adjustable stop U fixed to horizontal shaft S. The vertical lever J is
now moved in an opposite direction by spring T, so as to withdraw the larger driving
pulley, and at the same time apply the smaller driving pulley to the frictional surface
of the other cone. Both driving pulleys, as seen in Fig. 4 are connected together, so
as to be capable of sliding together upon the tin-roller shaft D.
It will be obvious, that the duration of the slower speed, will be determined by the
position of the adjustable stop-piece U fixed to horizontal shaft S.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The arrangement of mechanism for obtaining an increase and decrease of speed
in spinning mules, substantially as described.
2. The combination of two speed pulleys B and C of different diameters, and friction
cones Hand 1, operating substantially as described.
Dated this 16th day of December 1890.
THOS. RICHMOND,
Agent.