IMPROVEMENTS IN MACHINES FOR WINDING YARN OR THREAD ON TO BOBBINS OR SPOOLS, PARTS OF WHICH IMPROVEMENTS ARE APPLICABLE TO SELFACTING MULES AND LIKE MACHINES FOR SPINNING OR DOUBLING FIBROITS MATERIALS
Year: 1879

page_text: LETTERS PATENT to Wentworth Wilson Schofield and James Featham Sawer,
both of the Borough of Salford, in the County of Lancaster, Machinists, for
the Invention of "IMPROVEMENTS IN MACHINES FOR WINDING YARN OR
THREAD ON TO BOBBINS OR SPOOLS, PARTS OF WHICH IMPROVEMENTS ARE
APPLICABLE TO SELFACTING MULES AND LIKE MACHINES FOR SPINNING OR
DOUBLING FIBROITS MATERIALS."
Sealed the 5th December 1879, and dated the 9th June 1879.
PROVISIONAL SPECIFICATION left by the said Wentworth Wilson Schofield
and James Featham Sawer at the Office of the Commissioners of Patents on
the 9th June 1879.
WENTWORTH WILSON SCHOFIELD and JAMES FEATHAM SAWER, both of the
Borough of Salford, in the County of Lancaster, Machinists. "IMPROVEMENTS IN
MACHINES FOR WINDING YARN OR THREAD ON TO BOBBINS OR SPOOLS, PARTS
OF WHICH IMPROVEMENTS ARE APPLICABLE TO SELFACTING MULES AND LIKE
MACHINES FOR SPINNING OR DOUBLING FIBROUS MATERIALS."
The improvements to be hereafter described are made upon and apply to that
machinery for which Letters Patent were granted to William Weild, numbered 699,
and dated the Sixteenth day of March, in the year of our Lord One thousand
eight hundred and sixty, and the terms used hereafter as "camshaft, escape plate,
escape plate lever, shaper camshaft, threadguides, head stock," and others, refer to
the parts so designated and described in the Specification of this Patent.
Our first improvements consist in the application of a break to the top driving
shaft of the machine for instantly stopping it when the driving strap is shifted to
the loose pulley. A break band is passed partly round a pulley fixed upon the
driving shaft, one end of the band being attached to a stud bolted to the frame of
the machine, while the other end is connected to a lever having its fulcrum on the
same or other stud fixed to the frame, and pulled by a spring so as to tighten the
band on the pulley unless prevented by the mechanisms hereafter described. The
driving belt is moved from the loose to the fast pulley, and vice versa, by a partial

page_text: rotation of a vertical shaft to which the strap fork is attached. This shaft also
carries the segment of a flanged disk, the flange (forming an incline which comes
against a stud fixed to the end of the lever, and raises it when the strap is shifted
from the loose to the fast pulley, and thereby lifts the breakband off the break
pulley while the machine is running, but allows the lever to drop and the break-
band to be tightened by the spring when the shaft is turned for shifting the strap
back to the loose pulley, by which means the motion of the driving shaft is
immediately arrested.
Our second improvement relates to mechanism for actuating the "cam shaft" for
effecting the changes in the working of the machine. A wheel is keyed upon the
cam shaft having teeth upon two parts of its periphery only, so as to leave two
opposite spaces without teeth. Four studs with anti friction bowls are fixed to
the side of this wheel, and acted upon by a lever having its fulcrum on a stud in
a bracket attached to the frame, which lever is pressed against the bowls by a
spring. The bowls are so placed that the lever presses against only one of them
when one of the "stops" on the "escape plate" is in contact with the "stop" on the
'escape plate lever," and imparts a small rotary movement to the "
"I
cam shaft"
"
when the stop is withdrawn until the second bowl also comes against the lever when
the wheel is held in this position. A spur wheel with teeth all round is placed
upon a stud fixed to the frame, in such a position that its teeth gear with the teeth
on the cainshaft wheel and receives continuous motion from the machine shaft.
The toothless spaces on the camshaft wheel are so arranged that they are opposite
the revolving wheel when the shaft is held by the stops, bowls, and lever in the
manner described above, so that no motion is transmitted from the revolving
wheel to the cam shaft. At each of the toothless spaces a narrow tooth coinciding
with the pitch of the wheel is formed upon a short bolt sliding transversely in suit-
able recesses of the wheel. An incline fixed to the frame of the machine acts upon
the other end of this bolt and causes the narrow tooth to be moved sideways and
held beyond the edge of the revolving wheel, but when on withdrawal of the "stop"
on the "escape plate lever" a small rotary movement is given to the camshaft
wheel by the mechanism before described, the sliding bolt slips off the incline and
a spring pushes it sideways so that the narrow tooth is brought into gear with the
revolving wheel. This wheel acting upon this tooth overcomes the pressure of the
lever against the bowls, and turns the camshaft wheel sufficiently round to bring
the teeth of the same into gear with the revolving wheel, when the shaft continues
to be turned until these teeth have been worked out of gear and the next tooth-
less space arrives opposite the revolving wheel, by which time the next "stop
on the
escape plate comes against the "stop" on the "escape plate lever," and is held there
by the lever acting upon the third bowl. On the second withdrawal of this stop
the action is repeated, and the cam shaft brought back to its original position.
This part of our luvention is also applicable to self acting mules and similar
machines where a cam shaft and escape plate are used. Instead of there being two
parts with teeth and two without teeth on the camshaft wheel, there may be three
or more of each with a corresponding double number of bowls, according to the
number of movements the camshaft has to make in order to complete one revolution.
Instead of the sliding teeth slipping into gear with the wheel driving the camshaft
wheels, a separate wheel of a coarser pitch may be attached to the side of the former
into which the teeth slide.
"
Our third improvement consists in a combination of mechanisms for raising the
"thread guides" gradually as the spools are filled, and for allowing them to drop
upon the spools before the last layers of thread are wound on. Each thread guide
carrier is connected to a lever at the back of the machine in the previously used
manner. These levers are loose upon the shaft, and a chain passing over a pulley
and weighted at the end is attached to the other end of each lever so as to pull the
thread guides down upon the spools. Next to each loose lever another lever is
fixed upon the shaft, carrying a projection or finger which comes against the loose

page_text: lever when the shaft is turned and pushes it so as to lift the thread guides. A
lever keyed on the end of the shaft is connected by an adjustable link to another
lever on a short shaft carried in bearings attached to the back rail of the head
stock. A third lever on the other end of the shaft rests with an antifriction bowl
against a rim-cam on the "shaper can shaft." The rim of this cam forms a double
incline, one side rising evenly for the greater part of the circumference, and the
other side falling off quickly. As the "shaper camshaft" is turned a little after each
two layers of thread are wound on, this incline acting upon the combination of levers
and links described above causes the back shaft to turn and the thread guides to
be raised until the bowl of the lever passes over the top of the incline, when the
shafts are turned in the opposite direction by a spring or weight, and the thread
guides pulled down upon the spools by the weights attached to the chains.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Wentworth Wilson Schofield and James Featham Sawer in the
Great Seal Patent Office on the 8th December 1879.
WENTWORTH WILSON SCHOFIELD and JAMES FEATHAM SAWER, of the Borough
of Salford, in the County of Lancaster, Machinists. "IMPROVEMENTS IN MACHINES
FOR WINDING YARN OR THREAD ON TO BOBBINS OR SPOOLS, PARTS OF WHICH
IMPROVEMENTS ARE APPLICABLE TO SELFACTING MULES AND LIKE MACHINES
FOR SPINNING OR DOUBLING FIBROUS MATERIALS."
The improvements described hereafter refer to and are applicable to the machinery
for which Letters Patent were granted to William Weild, numbered 699, and
dated the Sixteenth day of March, One thousand eight hundred and sixty, and the
terms used hereafter as "camshaft," "escape plate," "escape plate lever," "shaper
cain shaft," "thread guides," "head stock," and others refer to the parts so
designated and described in the Specification of the said Letters Patent.
Our Invention will be readily understood and carried out by reference to the
accompanying 3 Sheets of Drawings, of which Fig. 1, Sheet 1, is an end elevation
of the machine as seen from the driving end in the upper portion, and a section
near the head stock along the line A, B, Fig. 4, Sheet 2, in the lower portion;
Fig. 2 is a partial back view of the driving end; and Fig. 3, a sectional plan of
the same; Fig. 4, Sheet 2, is a partial back view of the machine; Fig. 5, Sheet 3,
is an enlarged back view of the camshaft motion; Fig. 6, a section along the
line C, D,; Fig. 7, a section along E, F, G; Fig. 8, a view of the escape plate and
lover; only such parts of the machine being shewn as are necessary for the
comprehension of our improvements.
Our first improvement consists in the application of a brake to the top driving
shaft of the machine, for instantly stopping it when the driving strap is shifted to
the loose pulley. A brake band a is passed partly round a pulloy a' fixed upon the
driving shaft a, one end of the band being attached to a stud a fixed to the frame
H of the machine, while the other end is connected to a lever b' which has its
fulcrum on the same or other stud fixed to the frame, and is pulled by a spring b²
so as to tighten the band on the pulley unless prevented by the mechanism here-
after described. The driving belt is shifted from the loose pulley c¹ to the fast
pulley c², and vice versa, by a partial rotation of a vertical shaft c to which the
strap fork is attached. This shaft also carries the segment of a flanged disk c
the flange forming an incline which comes against a stud b' fixed to the end of the
lever band raises it, when the strap is shifted from the loose to the fast pulley c³,
thereby lifting the brakeband a off the brake pulley a¹ while the machine is
running, and allows it to drop and the brake band to be tightened by the spring b³,
when the vertical shaft is turned for shifting the strap back to the loose pulley c¹, by
which means the motion of the driving shaft is immediately arrested. Our second
improvement relates to the mechanism for actuating the "camshaft" for effecting
the changes in the working of the machine, and is more particularly illustrated by
Sheet 3 of the Drawings. A wheel d is keyed upon the camshaft d' having teeth
upon two parts of its periphery only, so as to leave two opposite places without
any teeth. Four studs with antifriction bowls e¹, e³, es, es, are fixed to the side of
the wheel d, and acted upon by a lever f having its fulcrum. upon a stud f' in a
bracket attached to the frame, which lever fis pressed against the bowls by a
spring. The bowls are so placed that the lever presses against only one of
them, when one of the "stops" g on the "escape plate" g' is in contact with the
stop g on the "escape plate lever" g³, and imparts a small rotary movement to
the cam shaft when the stop g² is withdrawn, until the second bowl e also comes
against the lever, when the wheel is held in this position. A spur wheel h with
teeth all round is placed upon a stud ³ fixed to the frame in such a position, that

page_text: its teeth gear with the teeth on the camshaft wheel d, and receives continuous
motion from the machine shaft i. The toothless spaces on the camshaft wheel
are so arranged that they are opposite the revolving wheel, when the shaft d'
is held by the stops, bowls, and lever in the inanner described above, so that
no motion is transmitted from the revolving wheel h to the camshaft. At each
of the toothless spaces a narrow tooth coinciding with the pitch of the wheel
is formed upon a short bolt k, k, sliding transversely in a suitable recess of
the wheel (Fig. 7, Sheet 3). An incline fixed to the frame of the machine acts
upon the other end of this bolt and causes the narrow tooth to bo moved sideways
and held beyond the edge of the revolving wheel h; but, when on withdrawal of
the "stop" g, on the "escape plate lever" g³, a small rotary movement is given to
the camshaft wheel by the mechanism before described, the sliding bolt / slips off
the incline ³, and a spring pushes it sideways so that the narrow tooth is brought
into gear with the revolving wheel h. This wheel acting on the tooth over-
comes the pressure of the lever f against the bowls e¹, e, and turns the camshaft
wheel & sufficiently to bring the teeth of the same into gear with the revolving
wheel h, when the shaft d continues to be turned until these teeth have been
worked out of gear, and the next toothless space arrives opposite the revolving
wheel h, by which time the next stop on the "escape plate" comes against the
stop" g² on the " escape plate lever g3, and is held there by the lever facting
"
upon the third bowl e. On the second withdrawal of this stop the action is
repeated and the camshaft brought back to its original position. This part of our
Invention is also applicable to selfacting mulos and similar machines where a cam-
shaft and escape plate are used. Instead of thero being two parts with teeth and
two parts without teeth on the camshaft wheel there may be three or more of each
with a corresponding double number of bowls, according to the number of move-
ments the camshaft has to make in order to complete a revolution. Instead of the
sliding teeth slipping into gear with the wheel driving the camshaft wheel a
separate wheel of coarser pitch may be attached to the former, into which the teeth
slide.
#
Our third improvement consists of a combination of mechanism for raising the
thread guides gradually as the spools are filled, and for allowing them to drop
upon the spools before the last layers of thread are wound on. Each thread guide
carrier is connected to a lever m at the back of the machine by a link m¹ in the
ordinary way. These levers m are loose upon the shaft n, and a chain m² passing
over a pulley m³, and weighted at the end is attached to the other end of each lever m
so as to pull the thread guides down upon the spools. Next to each loose lever m
another lever n' is fixed upon the shaft n carrying a projection or finger n² which
comes against the loose lover when the shaft is turned and pushes it so as to lift
the thread guides. A lever n³ on the end of the shaft n is connected by an
adjustable link o to another lever p on a short shaft p¹ carried in bearings p², p³,
fixed to the back rail 9 of the "head stock." A third lever 21 on the other end of
this shaft rests with an antifriction bowl against a rim cam ŕ on the "shaper cam-
shaft". The rim of this cam forms a double incline, one side rising evenly for
the greater part of the circumference, and the other side falling off quickly. As
the "shaper camshaft" is turned a little after each two layers of thread are wound
on, this incline acting upon the combination of levers and links described above
causes the backshaft n to turn, and the thread guides to be raised until the bowl on
the lever p passes over the top of the incline when the shafts are turned in the
opposite direction by a springs or weight, and each thread guide is pulled down
upon the spools by the weight n³ attached to the chain independently of the other
thread guides.
Having now particularly described the nature of our improvements and ascer-
tained the manner in which they may be carried into practice, we claim as our
Invention substantially,―
Firstly. The application of a brake to the top driving shaft actuated by the
movement of the strap shifting rod, substantially as described.

page_text: Secondly. The mechanism for actuating the camshaft for effecting the changes as
applied to the machinery for winding yarn or thread upon bobbins or spools, and
also for selfacting mules and the like machines, substantially as described.
Thirdly. The application of the mechanism herein before described for raising
and depressing the thread guides, and of the arrangement of weighting each
threadguide independently of the others to machinery for winding yarn or thread
upon bobbins or spools, substantially as described.
In witness whereof, we, the said Wentworth Wilson Schofield and James
Featham Sawer, have hereunto set our hands and seals, this Third day of
December, in the year of our Lord One thousand eight hundred and seventy
WENTWORTH WILSON SCHOFIELD. (L.S.)
JAMES FEATHAM SAWER.
(L.S.)