IMPROVEMENTS IN APPARATUS EMPLOYED IN MULES FOR SPINNING
Year: 1885

page_text: I WILLIAM HURST of the firm of Richard Threlfall of Bridgman Place Machine
Works, Bolton in the County of Lancaster Machinist, do hereby declare the nature
of my Invention for "IMPROVEMENTS IN APPARATUS EMPLOYED IN MULES FOR
SPINNING," to be as follows:-
My invention relates to improvements in apparatus employed in mules for
spinning and consists in mechanism for maintaining the tension of the rim band to
overcome slip during the operation of spinning, thereby dispensing with the
inconvenience of unequal twist in the yarn from this cause. In suitable fixings
secured to the floor or otherwise I mount a sliding rod provided with stops which
are operated upon by the movement of the mule carriage. To one of the aforesaid
fixings is pivotted a double ended curved lever, one end of which is operated upon
by the movement of the mule carriage, the opposite end lifting or bearing the
weight of the tension lever for regulating and operating the guide pullies over
which the rim band travels. One of the guide pullies is held and supported in
adjustable bearings which are operated by a screw provided with a ratchet motion,
the latter being attached to the tension lever before mentioned.
Immediately before the mule backs off the carriage operates one of the stops on
the sliding rod and moves another stop on to an incline ou the said curved lever,
by which the opposite end of the latter is raised to bear the weight of the tension
lever operating on the rim band.
When the mule carriage is going up, a finger fixed thereto strikes the said
curved lever and holds it in position until the carriage begins to travel out again
or otherwise, at the same time operating on a stop secured to the sliding rod and
liberating a stop or finger from the incline plane on the curved lever, when the
tension motion is ready for operation immediately the carriage is clear of the
curved lever before mentioned, which allows the weight or spring to operate on
the tension lever and take up any slack their may be in the rim band. The
tension lever when liberated from the action of the regulating lever is operated
upon by a suitable weight and spring; the catch being held up to its work by a
suitable weight or other equivalents attached thereto.
the tension lever drops by the action of a weight or
said curved lover when the catch takes one or more
according to the amount of slack.
As the rim band stretches,
spring; being lifted by the
teeth of the ratchet wheel
'
EDMUND CHADWICK,
Agent for the Applicant.

page_text: страстепеню щ аррагали вируси штитез юг орших.
I WILLIAM HURST of the firm of Richard Threlfall of Bridgman Place Machine
Works, Bolton in the County of Lancaster, Machinist, do hereby declare the nature
of my Invention for "IMPROVEMENTS IN APPARATUS EMPLOYED IN MULES FOR
SPINNING," and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:—
My invention relates to improvements in apparatus employed in mules for
spinning and consists in mechanism for maintaining the tension of the rim band to
overcome slip during the operation of spinning, thereby dispensing with the
inconvenience of unequal twist in the yarn from this cause. In suitable fixings
secured to the floor or otherwise I mount a sliding rod provided with stops which.
are operated upon by the movement of the mule carriage. To a fixing secured to
the floor is pivoted a double ended curved lever, one end of which is operated
upon by the movement of the mule carriage, the opposite end lifting or bearing
the weight of the tension lever for regulating and operating one of the guide
pulleys over which the rim band travels. This guide pulley is held and supported
in adjustable bearings which are operated by a screw provided with a ratchet
motion, the latter being attached to the tension lever before mentioned.
Immediately before the mule backs off the carriage operates one of the stops on
the sliding rod and moves the latter with its incline plane and operates a lever
by which the opposite end of the latter is raised to bear the weight of the tension
lever operating on the rim band. When the mule carriage is going up a finger
fixed thereto strikes the said double ended curved lever and holds it in position
until the carriage begins to travel out again, at the same time operating on a stop
secured to the sliding rod, when' the tension motion is ready for operation
immediately the carriage is clear of the double ended curved lever before mentioned,
which allows the weight or spring to operate on the tension lever and take up any
Black there may be in the rim band. The tension lever when liberated from the
action of the regulating lever is operated upon by a suitable weight or spring; the
catch being held up to its work by the same or other equivalents attached thereto.
As the rim band stretches the tension lever drops by the action of the weight or
spring named above; being lifted by the said curved lever when the catch takes
one or more teeth of the ratchet wheel according to the amount of slack.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a part side elevation of the headstock of a self-acting mule with my
improvements applied for automatically maintaining the tension on the rim band-
Fig. 2 is a plan of Fig. 1-Fig. 3 is an elevation of the sliding rod provided with
an incline plane for operating the tension lever when the carriage is at full stretch,
or nearly so, and Fig. 4 is an end elevation of my improved apparatus behind the
headstock shewn in Fig. 1.
In all these figures the same letters and numerals are used to indicate
corresponding parts.
A is the headstock; B the rim band pulley; C the rim band D the mule
carriage, and E the adjustable guide pulley for taking up any slack that may occur
from the stretching of the rim band C. The adjustable guide pulley E is mounted
on the centre 1 carried in the bearings 2 on the side of the sliding block 3. The

page_text: "
sliding block 3 is mounted in the fixing 4 secured to the headstock A, and is
provided with the tapped hole in which the screwed spindle 5 is mounted. The
screwed spindle 5 is mounted in the fixing 4 so as to be able to revolve and move
the sliding block in either direction. On the outer end of the screwed spindle 5 is
fitted the ratchet wheel 9, between which and the fixing 4 secured to the headstock
is mounted loosely the double lever 6 and 7. To the lever 6 is attached the
pawl" 8 which operates on the ratchet wheel 9. On the mule room floor is
secured the fixing 10 to which is pivoted the double ended curved lever 11
and 11*; the underside of the latter being provided with the fork 12 in which the
lever 18 operates when raised by the action of the sliding rod 14 when the
carriage D is out at full stretch, or nearly so, as shewn in dotted lines in Fig. 1.
The lever 13 is mounted loosely in the fixing 15 secured to the mule room floor,
the opposite end of same being guided and held in position by the fork fixing 16
when the inclined plane 20 on the sliding rod 14 operates it. The sliding rod 14
is mounted in the fixings 17 secured to the mule room floor or any convenient part
of the headstock of the mule.
The operation of this apparatus is as follows:-
When the mule carriage D assumes the position shewn in full lines in Figs. 1
and 2 the finger 21 strikes the double ended curved lever 11 and lifts the opposite
end 11* and the tension lever 7 above it. Immediately the carriage commences
to travel outwardly, as indicated by the arrow, and the finger 21 liberates the
lever 11, the opposite end 11* being the heaviest drops and allows the tension
lever 7 and 6 with its "pawl" attachment to operate on the ratchet wheel 9, which
revolves in case the rim band is slack and turns the screw 5, thereby moving the
sliding block and guide pulley E outwardly. When the mule carriage D has
almost completed its outward travel, as in dotted lines, the finger 22 attached
thereto strikes the stop 23 on the rod 14 and slides the latter causing the incline
plane 20 to press down one end of the lever 13 and raise the other. The raised
end of the lever 13 operates and lifts the outer end 11* of the double ended curved
lever which again lifts the tension lever 7 so as to cause the "pawl" to operate on
the ratchet wheel when liberated and take up any further slack that may occur.
In case the rim band is sufficiently tight to overcome the lever 7 and weight 24
the latter are held up in the position shown in Fig. 4, during which the levers 11*
and 13 are operated continuously in the manuer described by the movement of the
nule carriage, and which operates on the lever 7 immediately it drops from
slackness of the rim band.
The sliding action of the rod 14 is reversed by the finger 22 striking the stop 25
on the return stroke of the mule carriage D, thus liberating the levers 13 and 7 in
time to allow of the latter being operated by the double ended curved lever 11
and 11*. The weight 24, or its equivalent, such as, a spring may be attached to
the lever 7 to ensure the latter dropping and maintain the tension on the rim band,
thereby preventing the inconvenience arising therefrom.
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:-
The construction and arrangement of apparatus for automatically maintaining
the tension of the rim band employed in self-actor mules for spinning, substantially
as described and as shewn on the drawings.
EDMUND CHADWICK,
Agent for Applicant..