Improvements in Self-acting Mules.
Year: 1898

page_text: Date of Application, 12th July, 1898
Complete Specification Left. 12th May. 1899-Accepted 12th July 1899
DIECTIVATION.
Improvements in Self-acting Mules.
We, JAMES PICKFORD, Overlooker, JOSEPH TAYLOR, Mill Manager, and LUKE
BUTTERWORTH, Mill Manager, all of Royton, Lancashire, and PLATT BROTHERS
AND CO., LIMITED, of Oldham, in the same County, Engineers, do hereby declare
the nature of our said invention to be as follows:-
Our said invention has reference to self-acting mules, and relates chiefly to
those mules which comprise the inventions, wholly or in part, covered by Letters
Patent No. 17822, A.D. 1892 and Letters Patent No. 22494, A.D. 1896, and our
present invention has among its several objects first, to simplify the mechanism
on and about the rim shaft, and thus lighten the driving of such shaft and the
twist mechanism, and permit of the use of wider driving pulleys.
Secondly, to effect the operation of backing-off in a more positive and reliable
manner than heretofore, or to ensure of the disengaging of the tin roller backing-off
friction synchronising with the locking of the winding faller (or the movement
of the ordinary backing-off charging rod) so that the tin roller cannot continue to
back-off after the winding faller is locked and the carriage has commenced its
inward run.
A further object is to effect the arresting and reversal of the tin-roller shaft by
a single backing-off friction (or the tin-roller shaft) and an independent backing-
off band continuously running in one direction at backing-off speed and driven
direct from any shaft, having a suitable speed, or through a lay or side shaft on
the headstock speeded down to suit, thereby dispensing with all friction cone
mechanism on the rim shaft, lightening such shaft, and leaving room for the
application of wider driving pulleys.
In accordance with our invention, we employ a backing-off friction cone
on the tin-roller shaft which in contra-distinction to the friction cone described
in our said 1896 Patent which simply acted as a coupling and brake, now effects
the backing-off. The external half of such friction is keyed to the shaft and the
internal half, which is formed in the side of a pulley mounted
loosely on the shaft (or upon a fixed sleeve surrounding the shaft
and supported by a bracket on the square) is capable of a slight endwise
movement. Passing around the pulley is an independent backing-off band run-
ning over carrier pulleys on the frame and around a rim or pulley on, say, a
side shaft in the headstock, receiving motion by suitable gearing from a spur wheel
on the rim shaft constantly driven at a proper speed in one direction, or said
band passes around a pulley on a shaft suitably speeded down from the cam, or
other shaft suitable for the purpose.
The aforesaid continuously running band and backing-off friction on the tin-
roller may be used in combination with the hinged incline described in our said
Specification of 1896 and shewn in Figs. 4 to 10 thereof, with the incline set to
engage the bowl of the friction somewhat later than heretofore, but we prefer to
adopt the arrangement of mechanism hereinafter described, which in essence
embodies the utilisation of the ordinary backing-off charging rod for putting the
n

page_text: aforesaid backing-off friction cones into, and out of, gear quickly, and the latter
synchronising with the locking of the faller.
Alongside the aforesaid internal half of the backing-off friction we arrange a
forked lever, engaging by dies with a groove in the boss of the internal cone, and
when moved radially serving to move the said internal cone into, or out of, gear
with the external cone. Upon the usual backing-off charging rod, which in the
general arrangements of mules operates the usual backing-off frictions on the rim
(but which latter are dispensed with in our present invention) we mount an
incline, and upon a fulcrum on the carriage square we also mount a further lever,
carrying a runner or bowl at its upper extremity in the same horizontal plane as
that of the incline, and .between the last named lever and the forked lever for
operating the internal backing-off friction we arrange a rod or link encircled by
a spring and lock nuts, which whilst spinning is going on, are held by a further
spring or weight in a position which keeps the backing-off frictions on the tin-
roller out of gear.
'
When the backing-off is timed to take place, and just previous to the termina-
tion of the outward run of the carriage, the charging rod is moved forward by
the inclined lever connected to the locking lever in the ordinary manner. In
making this movement the aforesaid incline is carried forward with the charging
ród, and pushed into a position to act on the bowl fixed to the top of the aforesaid
lever, thus causing such lever to move upon its fulcrum and by its link or connection
with the forked lever of the internal backing-off friction cone, put the internal
cone into engagement with the external cone, and so arrest and reverse the move-
ment of the tin-roller (which has previously been partly arrested by the shifting
of the driving belt on to the loose pulley and by the drag of the spindles) for
backing-off, which is easily effected owing to the reduced momentum or vis-
inertia of the rim pulley, and by the constantly running band, which by not having
to reverse is always kept at its full stretch and always ready to take effective
action.
Immediately the backing-off is completed, the locking of the faller allows the
backing-off charging rod, under the recoil of a spring (which is charged (com-
pressed) in the forward stroke) to return to its former position, and so withdraw
the incline from contact with the bowl on the lever aforesaid, and allow a spring
connected with such lever, or the forked lever, to pull the internal backing-off
friction cone out of gear with the external cone, and so stop the backing-off."
To humor the engaging of the cones the connecting rod or link operates the
cones through the medium of a spring, but for disengaging the cones the rod
acts upon the lever by the abutment of a collar. In some cases instead of causing
the incline on the charge rod to act at once on the forked lever which controls the
backing-off cones, we cause the incline to operate on a spring which acts on the
forked lever, but is prevented by a retaining catch from putting the backing-off
friction cones into gear until the retaining catch has been liberated by the change
of the cam shaft.
"
A modification of our invention consists of a "knuckle or folding link arrange-
ment, between the backing-off charging rod and fork lever, for operating the
internal friction cone, one link being pivoted to a bracket near the charging rod
and linked to such rod by a pin, and by the movements of the backing-off charging
rod serving to bring this link into position to act on the link connected to the fork
lever which operates the backing-off frictions, and so straighten or fold the links
into, and out of, line with the tin-roller shaft, and by their thrust or collapse,
operate the backing-off frictions.
In lieu of links and levers we may employ a single forked lever mounted on a
movable fulcrum engaging with the boss of the internal friction cone, and carrying
an extension with bowl on end to engage with a fixed incline. The fulcrum
of said lever is under control of the winding faller locking lever so as to disengage
the friction when the faller is locked.
1

page_text: A modification of our invention consists in the use of the parts described in our
Patent No. 22494 A.D. 1896, which are described as referring to the 2nd part of
the invention. These devices we now use for the purpose of engaging and dis-
engaging the backing-off cones on the tin-roller by which the operation of backing-
off is now controlled.
وو
A further feature of our invention relates to a modification of the hinged incline
devices described in our 1896 Patent, and is intended to accomplish the same
certainty of action or synchronising between the locking of the winding faller and
the disengagement of the backing-off friction described in the previous arrange-
ment. This modification consists in operating the "prop" or vertical swivel lever
beneath the incline by a special rod connected by bell-crank levers and links to
a finger or arm forming part of the cam strap lever, which under the pull of a
spring, bears against the cam on the usual cam shaft, and, as the cam operates,
is caused to impart movement to the said rod, which in turn by means of a nut
or collar fixed upon it, serves to pull up the lever, and raise the hinged incline at
the moment the backing-off frictions on the tin-roller are timed to go into gear,
and so put the backing off frictions into gear. The said "prop" is lowered by the
movement of the faller locking lever which is arranged to act upon it and so permit
the backing-off cones being disengaged. In some cases I use the backing-off
charge rod to lower the "prop "to permit the backing-off cones being disengaged.
To ensure the depression of the cam shaft long lever and the changing of the
cam shaft if the carriage should fail to complete its outward run, or if the
depressing finger fails to sufficiently depress the bowl in the long lever, we
provide a cam, eccentric, or arm on the winding faller shaft which when the
carriage is out is capable of operating upon a suitable fixture on the long lever
when the latter fails to make its full movement. The movement of the faller when
backing-off will cause the long lever to complete its charge and ensure that the
cam shaft shall make its change and so permit of the backing-off being arrested
when the backing-off has been completed.
We have described our invention in relation to mules which do not twist at the
head, our invention is nevertheless applicable to mules in which "twist" is put
in at the head by making such modifications as will be necessary to connect the
several parts with the "twist" motion.
Whilst the single backing-off friction is usually sufficient for arresting and
turning back the tin-roller, we may sometimes employ a friction cone on the
rim shaft not operating as a backing-off friction, but as a brake, to help in
arresting the rim shaft and rim band, and by driving the tin-roller pulley through
a ratchet and pawl, or tumbler wheel, relieve the backing-off frictions of the
resistance of the twist band, which when reversed and running at a higher speed
will not interfere with the backing-off.
1 1009

page_text: ԱՄ ԵՂԵԱԼԻ
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
Our said invention has reference to self-acting mules and relates chiefly to
those mules which comprise the inventions wholly or in part, covered by Letters
Patent No. 17822 A.D. 1892 and Letters Patent No. 22494, A.D). 1896 and our
present invention has among its several objects first, to simplify the mechanism
on and about the rim shaft, and thus lighten the driving of such shaft and permit
of the use of wider driving pulleys,—secondly to effect the operation of backing-
off in a more positive and reliable manner than heretofore, or to ensure of the
dis-engaging of the tin-roller backing-off friction synchronising with the locking
of the winding faller (or the movement of the ordinary backing-off charging rod)
so that the tin roller cannot continue to back-off after the winding faller is locked
and the carriage has commenced its inward run;-and thirdly to effect the
arresting and reversal of the tin-roller shaft by a single backing-off friction
(on the tin-roller shaft) and an independent backing-off band continuously run-
ning in one direction at backing-off speed and driven direct from any shaft having
a suitable speed, or through a lay or side shaft on the headstock speeded down to
suit, thereby dispensing with all friction cone mechanism on the rim shaft,
lightening such shaft and leaving room for the application of wider driving
pulleys.
The annexed 4 sheets of drawings illustrate the various forms and details of our
improvements upon which-
Fig. 1 illustrates a broken side elevation of so much of a mule headstock frame
and cross section of carriage as is necessary to show the application of our invention
thereto.
Fig. 2 illustrates a part front view of the mule headstock,
Fig. 3 illustrates a front view of a certain portion of the tin-roller shaft and
the carriage square with our invention applied thereto, the shaft being partly
broken away to make our improvements clear.
Fig. 4 illustrates a detail to a larger scale.
Fig. 5 illustrates a side view of the mule headstock frame and carriage and
shews more particularly the path of the independent and continuously driven
backing-off band.
Fig. 6 illustrates another front view of the tin-roller shaft similar to Fig. 3 with
a modification of our invention applied thereto.
Fig. 7 illustrates a further front view (in part) and Fig. 8 a transverse section of
the tin-roller shaft and carriage square shewing another modification of our
invention.
Figs. 9 to 15 illustrate certain parts of the invention covered by our said Patent
of 1896.
Figs. 16 and 17 illustrate broken side elevation of a mule headstock and framing
and a traverse section of the mule carriage with further modifications of our
invention applied thereto.
Fig. 16 shewing certain parts of our invention in the position they occupy at
the completion of the backing-off, and Fig. 17 shewing the same parts in the
position they occupy at the finish of spinning and before commencing and during
backing-off, certain details in one view being also slightly different from those
shewn in the other view.
Fig. 18 illustrates another part side view of the mule headstock, framing shewing
certain additions to the winding faller shaft for operating upon the long lever
when backing-off.
Fig. 19 illustrates a further part side view of the mule headstock and illustrates
in section a further modification or part of our invention. Fig. 20 illustrates
a detail of Fig. 19.
In accordance with our invention we employ a backing-off friction clutch on the

page_text: tin-roller shaft (1) for effecting the backing off in contra-distinction to the friction
clutch described in Letters Patent No. 22494/96, which simply acted as a brake
and coupling by means of which the backing off cones on the rim shaft were able
to arrest & reverse the motion of the tin roller shaft for the purpose of backing
off. The external half (2) of such friction (see Fig. 9) is keyed to the shaft (1)
and the internal half (3) which is formed in the side of a pulley (4) is mounted
loosely upon a fixed sleeve (5) surrounding the shaft, and supported by a bracket (6)
on the square (7) is capable of a slight endwise movement. Passing around the
pulley is an independent backing-off band (8) running over carrier pulleys (9)
on the frame and around a rim or pulley (10) on a side shaft (11) in the head-
stock (12) receiving motion by suitable gearing spur pinion (13) or other inter-
mediate gear from a spur wheel (14) running loose on the rim shaft (15) constantly
driven at a proper speed in one direction. Such band may pass around a pulley
on a shaft suitably speeded down from any other shaft suitable for the purpose.
The aforesaid continuously running band (8) and backing-off friction clutch on
the tin-roller shaft (1) may be used in combination with the hinged incline
described in the Specification of Letters Patent No. 22494, A.D. 1896, and shewn
in Figs. 4 to 10 of the drawing accompanying said specification with the incline
set to engage the bowl carried by the friction cone somewhat later than heretofore,
but we prefer to adopt the arrangement of mechanism hereinafter described
which consists chiefly in the utilisation of the ordinary backing-off charging
rod (16) for putting the backing-off friction cones into, and out of gear quickly
and the latter synchronising with the locking of the faller.
Alongside the aforesaid internal half (3) of the backing-off friction clutch we
arrange a forked lever (17) engaging by dies (18) with a groove (19) in the
boss (20) of the said internal cone (3) and when moved radially serving to move the
said internal cone into, or out of gear with the external cone (2).
Upon the usual backing-off charging rod (16) (see Figs. 1 and 4) which in the
general arrangements of mules operates the usual backing-off frictions on the
rim shaft, we mount an incline (21), and upon a fulcrum (22) on the carriage
square (7) we also mount a further lever (23) carrying a runner or bowl (24) at
its upper extremity, and between the last named lever (23) and the forked
lever (17) for operating the internal part (3) of the backing-off friction we
a rod (25) and a link (26), the former encircled by a spring (27) and fitted with
arrange
lock nuts (see Fig. 3) and the said rod and link, whilst spinning is going on are
held by a further spring (28) in a position which keeps the backing-off fric-
tions (2) and (3) out of gear.
When the operation of backing-off is timed to take place, and just previous to
the termination of the outward run of the carriage the charging rod (16) is
moved forward in the direction of arrow (*) by the inclined lever (29) connected
to the locking lever (30) in the ordinary manner. In making this movement the
incline (21) is carried forward with the charging rod (16) and pushed into a
position to act on the bowl (24) fixed to the top of the lever (23) thus causing
such lever (23) to move upon its fulcrum (22) and by its rod and link, or con-
nection with the forked lever (17) of the internal backing-off friction cone (3) put
such internal cone (3) into engagement with the external cone (2), and so arrest
and reverse the movement of the tin-roller (1) (which has previously been partly
arrested by the shifting of the driving belt from the fast pulley (31) on to the
loose pulley (32) and by the drag of the spindles) for backing-off which is the
more easily effected owing to the reduced momentum or vis-inertia of the rim
bulley (33), and by the constantly running band (8) which by not having to
everse, is always kept at its full stretch and always ready to take effective action.
Immediately the backing-off is completed the locking of the faller allows the
backing-off charging rod (16) under the recoil of a spring (16) which is charged
compressed) in the forward stroke, to return in the reverse direction to that
ndicated by arrow (*) to its former position, and so withdraw the incline (21)

page_text: from contact with the bowl (24) on the lever (23) and allow the spring (28) to
pull the internal backing-off friction cone (3) out of gear with the external cone (2)
and so stop the backing-off.
To humor the engaging of the cones (2) and (3) the connect-rod and link operates
the friction cone (3) through the medium of spring (27).
In some cases instead of causing the incline (21) on the charging rod (16) to act
at once on the forked lever (17) which controls the backing-off cones, we cause
such incline to operate on a spring which acts on the forked lever (17), but is
prevented, by a retaining catch from putting the backing-off cones into gear until
the retaining catch has been liberated by the change of the cam shaft.
A modification of our invention consists of a "knuckle" or folding link arrange-
ment (see Fig. 6) between the backing-off charging rod (16) and fork lever (17)
for operating the internal friction cone, one part of such knuckle or link being a
bell-crank lever (35) pivoted to bracket (37) near the charging rod and carrying
the bowl (24) and the other part being a link (36) connected to the said lever (35)
and to the lever (17).
Whilst spinning is going on the knuckle is folded or lever (35) and link (36)
occupy the position shewn in dotted lines but as soon as the bowl (24) comes
against incline (21), the lever (35) moves on its pivot to the position shewn in full
lines and by its thrust upon link (36) cause such link to, engage the backing-off
frictions. With the reverse movement of charging rod (16) and withdrawing of
incline (21) from contact with bowl (24) the lever (35) is allowed under pull of
spring (28) to again assume the position shewn in dotted lines and thereby dis-
engage the frictions.
In lieu of links and levers we may employ a single fork lever (173) mounted
on a moveable fulcrum lever (39) (see Figs. 7 and 8) and said lever (17) engaging
with the boss (20) of friction (3) and carrying a flexible extension (40) provided
with bowl (41) on its lowest end to engage with a fixed incline (42).
The fulcrum lever (39) is under control of the winding-faller locking lever
through the medium of lever (43) during backing-off, being held by catch stud (44)
fixed on lever (39) and a catch lever (45) connected to lever (43) secured on faller
shaft (43) by a chain (46), and which lever and chain, when the faller locks, raise
the catch lever (45), release the fulcrum lever (39) and allow the frictions to
disengage. The re-engagement of catch lever (45) with catch stud (44) is effected
by the unlocking of the faller and by the pull of spring (47) ready for subsequent
backing-off, the bowls operating upon the friction cone about the fulcrum (39)
when engaging the cones, and about the fulcrum. (39**) when disengaging the
cones.
A modification of our invention consists in the use in combination with our
present improvements of the parts described in Letters Patent No. 22494 A.D.
1896 as referring to the 2nd part of the invention. These devices we now use for
the purpose of engaging and disengaging the friction cones on the tin-roller shaft
by which the operation of backing-off is now controlled. Figs. 9 and 10 illustrate
their application to our present object and Figs. 11 to 15 shew the details of such
devices to a larger scale.
To a bracket (48) we hinge an incline (49) and beneath such incline we mount a
lever (50) upon a horizontal fulcrum (51), with bowl (52) at one end and at the other
end connected through chain (53) on one. side, and through spring (54) on the
other side to the holding-out-catch rod (55) or other rod having like movements.
The lever (50) which whilst "taking in" is going on lies in the position shown
in Figs. 11 and 12 is pulled by rod (55) into a vertical position at the commence-
ment of the drawing out of the carriage, thereby raising and holding the incline (49)
to and in a horizontal position, ready to engage bowl (57) of spring extension (58)
of fork lever (17) and engage the friction cones. Immediately backing-off has
taken place the lever (50) under the reverse movement of rod (55) is lowered into a
horizontal or angular position and the incline (49) loosing its support falls away

page_text: Crear of the Dow (r) and thus allows the friction cones to come out of engagement
quickly.
A further feature of our invention relates to a modification of the said hinged
incline devices, and is intended to accomplish the same certainty of action or
synchronising between the locking of the winding faller and the dis-engagement
of the backing-off friction.
This modification consists in operating the lever (50) by special rod (60) (see
Fig. 16 which shows the position of the parts just at the completion of backing-
off) connected by levers (61) and (62) to a finger or arm (63) forming part of the
strap lever (64) which under the pull of a spring (65) acting against a fixed
finger (65) bears against the lever (66). The bowl (66) on the lever (66) is held
against the cam on the usual cam shaft (67) by the spring (65) acting against the
moveable finger (65***) and the fixed part (66). Before the completion of the
outward run of the carriage the strap lever is acted on by the movement of the
carriage so as to bring the strap on the loose pulley and the movement of the strap
lever imparts movement to the said rod (60) which in turn by means of a nut
or collar (68) and chain (68") fixed upon it pulls up the lever (50) and raises
the hinged incline (49) into a position to act on the bowl (57) of the lever and so
put said backing-off frictions into gear. The lever (50) is lowered by the movement
of the faller locking lever (30) when the faller is being locked, the said lever being
provided with an extension (30%) arranged to act upon a hoop (68b) on the rod (60)
and lever (50) so as to lower the incline at the completion of the backing-off and
permit of the backing-off cones being disengaged. In some cases we use the
backing-off charging rod (16) to raise and lower the lever (50) as shewn in Fig. 17,
the lever (61) being linked to a lever (62) which in turn engages with two
collars (16) on the charging ród (16).
In Fig. 16 we shew an arrangement for operating the strap lever (64) by the
movement of the carriage, comprising a pivoted or rocking lever (643) connected
to lever (66) by link (64) and arranged to lie in the path of nose (64***) on the
carriage and at the end of each stretch operate the lever (64) through the abutment
of lever (66) against such lever (64) for drawing the strap from the fast on to the
loose pulley.
To ensure the depression of the cam shaft long lever (69) and the changing of the
cam shaft (67) if the carriage should fail to complete its outward run or if the
depressing finger fails to sufficiently depress the bowl (70) in the long lever (69)
we provide a cam (71) secured on the winding faller shaft (72) which cam when
the carriage is out is capable of operating upon a suitable fixture on the long
lever (69) when the latter fails to make its full movement and so liberate the
cam shaft. The movements of the faller shaft (72) when backing-off will cause
the cam (71) to depress the long lever and to complete its movement and ensure
that the cam shaft (67) shall make its change and so permit of the backing-off
being arrested when the backing-off has been completed.
We have described our invention in relation to mules which do not "twist at the
head" our invention is nevertheless applicable to mules in which twist is put in at
the "head" by making such modifications as will be necessary to connect the
several parts with the twist motion.
Whilst the single backing-off friction is usually sufficient for arresting and turn-
ing back the tin-roller, we may sometimes employ a friction cone on the rim
shaft (see Fig. 19) not operating as a backing-off friction, but as a brake to help
in arresting the rim shaft and rim band.
The internal friction (73) for convenience is driven in the opposite direction to
the rim shaft and is free to revolve thereon. The disc (73") is keyed on the rim
shaft (15). The external friction cone (73b) is free on the rim shaft but its
motion is limited by the stud (73°) coming in contact with the disc (73%). When
the frictions are put in contact the disc comes into contact with the studs in the
external friction cone and causes it to revolve with the rim shaft until it comes to

page_text: rest, the backing-off then comes into action and the rim shaft is free to turn the
required distance in a reverse direction whilst the friction remains in gear.
Having thus 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: In self acting mules, a set of backing-off friction cones on the tin-roller
shaft, one cone fast and the other loose, and the latter continuously running at
backing-off speed an independent and continuously running backing-off band,
passing around the said loose friction cone, intermediate guide pulleys for said
band a shaft (suitably speeded) upon or near the mule headstock or frame carrying
a pulley around which the independent backing-off band passes and means for
putting the said backing-off friction cones automatically into and out of engage-
ment with each other and all combined arranged and operating in the manner
and for the purposes substantially as herein set forth and illustrated in and by the
accompanying drawings.
2: In self-acting mules a set of backing-off friction cones on the tin-roller
shaft, one cone fast and the other loose, a continuously running backing-off band,
a spring holding the loose cone clear of the fast one when not engaged in backing-
off, a grooved boss on said loose cone, a fork lever engaging with said grooved
boss, a link coupled to said fork lever, a rod with flanges and spring in sliding
engagement with said link, a hinged or pivoted lever, an incline in the plane of
the said bowl upon the charging rod of the mule and all operating substantially
as and for the purposes herein set forth.
3: In self-acting mules a set of backing-off friction cones on the tin-roller
shaft, one cone fast and the other loose, a continuously running backing-off band,
a spring holding the loose cone clear of the fast cone when not engaged for backing-
off, a grooved boss on said loose cone, a fork lever engaging with such grooved
boss, a link coupled to said fork lever, a bell-crank lever coupled to the said link, a
bowl carried by said bell-crank lever and an incline in the path of the said bowl
upon the ordinary charging rod of the mule and all operating substantially as
and for the purposes herein set forth.
4: In self-acting mules a set of backing-off friction cones on the tin-roller
shaft, one cone fast and the other loose, a continuously running backing-off band,
a grooved boss on the loose cone, a fork lever engaging with said grooved boss,
a hinged lever carrying the fulcrum of said fork lever, a catch stud on said hinged
lever, a catch lever set to engage with said catch stud, and a chain from the
faller lever connected to said catch lever, a spring extension on said fork lever, a
bowl on said extension and an incline engaging with said bowl and all operating
substantially as and for the purposes herein set forth.
وو
5: In self-acting mules a set of backing-off friction cones on the tin-roller
shaft, one cone fast and the other loose, a continuously running backing-off band,
a fork lever engaging with the loose cone, an extension on said lever and a bowl
on said extension, a hinged incline, a swivel lever or prop for raising or
lowering said incline, a rod for operating said ".
prop a set of collars on the
rod a set of levers identified with the strap lever and an extension on the ordinary
locking lever and all operating substantially as and for the purposes herein set
forth.
39
<
6 In self-acting mules, a set of backing-off friction cones on the tin roller
shaft, one cone fast and the other loose, a continuously running backing-off band,
a fork lever engaging with the loose half, a spring extension on said lever, and a
bowl on said extension, a hinged incline, a swivel lever or prop" for raising or
lowering said incline, a rod for operating said "prop," and a set of levers identified
with a set of collars on the charging rod and all operating substantially as and for
the purposes herein set forth.
7:-In self-acting mules, the combination with the said backing-off friction
cones on the tin-roller shaft the continuously running backing-off hand, and

page_text: mechanism for automatically engaging and dis-engaging said frictions, of a cam
or the like upon the winding faller shaft engaging with and depressing the long
lever when the cam shaft requires to make its change substantially as and for
the purposes herein set forth.
8: In self-acting mules, the combination with the said backing-off friction
cones on the tin roller shaft, the continuously running backing-off band and
mechanism for engaging and dis-engaging said frictions of a set of loose friction
cones on the rim shaft, a grooved boss on one cone, a fork lever engaging with
such grooved boss, and a set of collars on the charging rod engaging the said
fork lever and "tumbler" gear for arresting the motion of the rim shaft previous
to backing-off and allowing the said rim shaft to reverse freely whilst backing-off
takes place substantially as set forth.
1000.
JAMES PICKFORD,
JOSEPH TAYLOR,
LUKE BUTTERWORTH,
PLATT BROTHERS & Co., LD.
By John G. Wilson & Co.,
A cente