CERTAIN IMPROVEMENTS IN MACHINERY FOR SPINNING AND DOUBLING."
Year: 1863

page_text: LETTERS PATENT to William Robertson, of the City of Manchester,
Engineer, for the Invention of " CERTAIN IMPROVEMENTS IN MACHINERY FOR
SPINNING AND DOUBLING."
PROVISIONAL SPECIFICATION left by the said William Robertson at the
Office of the Commissioners of Patents, with his Petition, on the
13th November 1868.
WILLIAM ROBERTSON, of the City of Manchester, Engineer, do hereby
declare the nature of the said Invention for "CERTAIN IMPROVEMENTS IN
MACHINERY FOR SPINNING AND DOUBLING," to be as follows:-
My improvements consist, firstly, in placing both the spindle pulley and
self-acting pulley of self-acting mules loose on their shaft, fastening the
backing-off cone on the shaft between these pullies, fastening the backing-off
wheel on the same shaft together with the bevil which communicates motion
to the scroll shaft placed in a vertical position, in making the boss of the
spindle pulley in two halves, so as either may be capable of being moved
longitudinally on the shaft without in any way affecting the position of the
other half, one half being moved into and out of contact with the backing-off
cone by a ring groove and fork, whilst the other (which communicates
motion to a carrier cannon shaft, on which is an adjustable pinion for altering

page_text: the speed of the rollers and carriage) is set and retained in position by a fork
fastened on the cannon, and acting in a ring groove in the part of the boss on
which the bevil is fastened which drives the cannon shaft, and making the
grooved change pullies for driving the spindles in two halves for convenience
of change.
Secondly, in making the edge of the internal wheel of the differential
motion which is fastened on the roller, one half of a catch box, the other half
of which is fastened on the wheel which receives motion from the cannon
shaft change pinion, above referred to, with which wheel the central pinion of
the differential motion is also fastened, so that when the rollers are driven
the intermediate and its arm and boss are driven at the same rate as the roller,
and when they are stopped only at the differential rate due to the proportions
of the differential motion. Motion is imparted to the carriage shaft by means
of a pinion fastened on the boss of the intermediate arm.
Thirdly, in giving motion to a short rack by a pinion on the carriage shaft
which communicates by a connecting rod with and imparts oscillating motion
to the winding-on radial arm, and by means of a rack wheel and catch box
imparts motion to the delivering rollers while the carriage runs in. This rack
may either receive or transmit differential motion; it may either be driven
differentially by the carriage shaft, or may impart differential motion to the
rollers during the inward run of the carriage, or both. When the rollers are
driven from the carriage shaft by an intermediate, the radial arm rack instead
of being driven. by the carriage shaft direct may be driven either by the
wheel. on the rollers or by the intermediate between the rollers and the
carriage shaft.
Fourthly, in lapping the scroll band on a small scroll fastened on the
winding-on barrel shaft, so that the power used for drawing in the carriage
may aid in turning the spindles, and in the case of spinning fine yarn, may
turn the spindles at a slow rate while the faller is rising.
Fifthly, in employing the power derived from distending a spring or lifting
a weight for the purpose of giving motion to a cam shaft, the spring or weight
is charged by the motion of the twist wheel through a differential motion, or
by the twist wheel giving motion to an endless pitch chain on which the
weight is suspended, or by the motion of the carriage or any of its connections
imparting the requisite motion to the pitch chain for the same purpose, or by
a long lever acted on alternately at each end, baving two racks fastened
thereto which permit a half wheel to geer between them, so that the oscillating
motion of the long lever may by acting on the half wheel alternately on
different sides of the centre impart to it rotation in one direction, and by the

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Robertson in the Great Seal Patent Office on the
12th May 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERTSON, of the City of Manchester, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of November, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said William Robertson, Her special license that I, the said William
Robertson, my executors, administrators, and assigns, or such others as I, the
said William Robertson, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
CERTAIN IMPROVEMENTS IN MACHINERY FOR SPINNING AND DOUBLING," upon
the condition (amongst others) that I, the said William Robertson, my
executors or administrators, by an instrument in writing under my, or their,
or one of their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
66
"
NOW KNOW YE, that I, the said William Robertson, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement (that is to say):-
The nature of my Invention, consists, first, in removing the rim band or
spindle pulley from the back to the front end of the rim shaft.
Secondly, in driving the backing-off by an internal wheel, thus dispensing
with the carrier wheel heretofore requisite.
Thirdly, in placing the scroll shaft in a vertical position instead of horizontally
as heretofore.

page_text: Fourthly, in certain combinations of the parts above referred to, by which
the mule is simplified in its construction, and the parts are rendered easy of
access or more direct in the application of their power.
Fifthly, in the combination of parts for connecting the rim band pulley
to the front roller, and to the carriage or squaring shaft.
Sixthly, in certain improved modes of communicating motion from the
carriage or squaring shaft to the winding or radial arm, and to the front
drawing roller, when the carriage is going in.
Seventhly, in fastening a scroll to the winding-on barrel shaft, or shaft con-
nected therewith, on which the in-taking band is wound, and through which
the power used for taking in the carriage may aid in driving the spindles, and
may turn the spindles slowly when the carriage is at the roller beam, and when
the faller is rising.
Eightbly, in employing the power derived from distending a spring or
lifting a weight, for giving motion to a cam shaft or cams, the spring is charged
or the weight is raised by the twist wheel, or by the carriage or any part in
connection therewith.
And, lastly, in making the escapement plate, and the various cams required
for producing the different changes in one piece or in one casting.
Having thus stated the nature of my Invention, I will proceed to describe
the manner of performing the same, reference being had to the two accom-
panying Sheets of Drawings.
On Sheet 1, Figure 1 is a side elevation of a self-acting mule for spinning
and doubling constructed according to my improvements; Figure 2 is a plan,
and Figure 3 is a front view of the same, shewn partly in section; Figures 4
and 5 are two views of the cam and escapement plate; and Figure 6 is a
section of the cam motion.
a is the rim shaft, to which are fixed the backing-off cone a¹, and the
internal backing-off wheel a². The pulley 6', the interior of which forms the
friction box for the backing-off cone a¹, is loose on the shaft a, and to it is s
fixed the spindle or rim band pulley b, which is made in two or more parts for
the convenience of changing. The rim bands 63, after passing over the pulley b,
are taken under the guide pulley 6 around the pulley ¹, connected to
the carriage i, around the pulley is fixed to the tin roller shaft i³, thence to
the guide pulley 6, which returns them above the level of the tin roller
shaft is to the guide pulley 66, again to the rim pulley b. By this arrange-
ment, which enables the rim bands to be returned above the tin roller shaft,
the forward position of the rim pulley 6 is limited only by the position of the
faller shafts, when the carriage reaches the roller beam.

page_text: A modification of this part of my Invention, shewing the pulley b at the end
of the rim shaft, is shewn at Figure 1 of Sheet 2. The boss of the pulley b¹
is made in two telescopic halves, as shewn by dots in Figure 2, and to the
detached half of the boss is fixed the bevel pinion 62, which gears into the bevel
wheel c, fixed on the axle c', which revolves in the cannon d, to the axle c¹ is
also fixed the pinion &, gearing into the wheel e¹, loose on the axle of the
front drawing roller e. By changing the pinion the speed of the rollers
and carriage can be altered, and the position of the cannon d can be varied
to suit the diameter of the pinion &, the fork d¹ projecting from the cannon d,
holding the bevel wheels b and c in gear, the telescopic communication between
the two halves of the boss of the friction pulley b¹, above referred to, permitting
this, and also allowing this pulley to be moved lengthwise on the shaft a, to put
the backing off cone into or out of contact by the fork f³ taking into the ring
groove in the boss of the pulley b'. The self-acting pulley f is also loose on the
shaft a, and to the boss of the pulley f is fixed the pinion f¹ gearing into the
wheel g' fixed to the axle g; to the wheel g¹ is cast or fixed the internal friction
box g³, fitting the cone pulley g³, to the boss of which is fixed the bevel pinion g',
gearing into the wheel h¹, on the vertical scroll shaft h; to the axle g is also
fixed the pinion g", gearing into the internal backing off wheel a². To the
shaft h are fixed the holding back scroll 2 and the in-taking scrolls h³ and
h; the bands from these scrolls are connected to the carriage i in the usual
manner. By placing these scrolls vertically the machinery is simplified, and
the vibration of the carriage produced by unequal tension of the bands when
the scroll shaft is horizontal is prevented; or the bands of the in-taking scrolls
may be wound on small scrolls fastened on the winding-on barrel shaft, or any
shaft connected therewith for aiding in turning the spindles, and for giving a
slow motion to the spindles on the carriage reaching the roller beam during
the rising of the fallers. These small scrolls require to be modified according
to the number of spindles in the mule or the velocity with which it is desired
to take in the carriage. The scrolls h², h³, and h', require to be enlarged to
suit the increased length of bands employed when applying this mode of con-
necting them to the carringe. The wheel is loose on the front roller shaft e,
and fast to the boss of the arm e', which carries the 'pinion e, intermediate
between the pinion e, fast on the boss of the wheel c, and the internal
5 wheel e, fast on the front roller shaft e. The wheel gears into the wheel j,
supported with the pinion ¹ on a stud projecting from the elbow bracket j³,
supported on the boss of the internal wheel k', driven by the pinion j³, and
loose on the carriage or squaring shaft k, but connected to it by the clutch box
, the elbow bracket j³ is also partly supported by the bracket fixed to the

page_text: framing of the headstock. The clutch box k' is moved in and out of gear
with the clutches on the wheel by the fork lever taking into the ring
groove in its boss. To the carriage or squaring shaft k is fixed the pinion,
gearing into the rack l, which with the rack above it moves to and fro each
stretch; these racks are supported in the guide 12 fixed to the framing of the
headstock, and by the roller 13 which runs on a rail fixed to the frame side.
The racks and communicate the requisite oscillating motion to the winding-
on radial arm m by means of the rod m¹ and lever m²; the radial arm m has
a screw m³ and nut as usual, and the winding-on chain n is connected to the
nut of the screw m³ and to the winding-on barrel n³, as in mules of the
present construction. The upper rack l¹ gears into the pinion e³, which is
connected to the delivering or drawing roller e by means of a ratchet wheel
and catches; by this means when the carriage is going in the drawing roller e
receives one revolution, or more or less, from the rack 1, as above described.
When it is desirable to produce a differential motion a snail or volute wheel
and corresponding rack, as shewn in Figure 9, on Sheet 2, are substituted for
the pinion and rack ', by this means a differential motion is given to the
drawing roller e during the inward run of the carriage. If the winding-on
or form of cop desired should require a differential motion to be given to the
rack 1, a volute wheel and rack are substituted for the pinion and rack. 1,
the form of volute being determined by the form of chase; the arrangements
shewn in Figure 1 are adapted to produce a regular conical chase. To the
boss of the pulley 6¹ is fixed the spur pinion 68, gearing into the change
pinion o, to the axle of which is fixed the worm o¹, gearing into the twist
wheel o³, loose on the hollow shaft o³, shewn on an enlarged scale at Figure 6;
this hollow shaft is loose on the front roller shaft e; to the twist wheel is fixed
the bevel wheel o*, forming part of a differential motion; the intermediate
pinion o revolves on a stud fastened to the hollow shaft o³, and gears into the
bevel wheel o, also loose on the hollow shaft o³, and having a barrel o', around
which a cord or chain o³ is lapped, to this cord or chain, which is passed around
suitable carrier pulleys, is suspended the weight oº, one of the carrier pulleys
is mounted on a stud projecting from the lever 010, the outer extremity of
which is drawn downwards against a stop by the spring o", the object of this
spring is to permit the weight to alight with less violence when it drops
suddenly. To the hollow shaft o³ is also fastened the piece p, which con-
stitutes both the escapement plate and cams, as shewn detached in Figures 4
and 5.
The dotted lines in Figure 4 shew the escapement plate and stops, the stop
marked 1 is that against which the lever q is acting when the carriage is

page_text: going out, as shewn in Figures 1 and 2; this stop is retained in the position
shewn by means of the connecting rod q', on which is fastened the adjustable
stud q detained by the latch o³ loose on a stud fixed to a bracket q* bolted to
the frame. When the carriage arrives at the termination of its outward run,
the latch is raised and the rod q¹ liberated; the spring 9 then pulls the
stop lever q out of the stop 1 of the escapement plate p, and it is detained by
the hook catch a projecting from a stud in the lever q, which is thereby
adjusted to act on the stop 2 of the escapement plate. When the twist
wheel o² has made two revolutions, the pin o¹², see Figure 6, projecting from its
boss, lifts the catch 26, liberates the stop lever q, when the spring & will bring
the stud q' against the second notch in the latch q³, by which the stop lever 9.
will be adjusted to act on the stop 3 of the escapement plate. When the
backing-off has been completed the latch q³ is released and the stop lever q
is liberated, and the spring 9 sets it the position to act on the stop 4 of the
escapement plate. When the carriage arrives at the roller beam the faller
shaft acting against the curved plate q' causes the stop lever q to liberate
the stop 4 of the escapement plate, which then turns to stop 1 or into the
position shewn in Figure 1.
During the outward run of the carriage the twist wheel o' is being turned
round, whilst the stud of the intermediate pinion of is prevented from revolving
by the stop lever q acting on stop 1 of the escapement plate; motion is thereby
communicated from the twist wheel to the barrel wheel of and barrel o', winding
the cord or chain 08 thereon and raising the weight o³. At each successive
release of the escapement plate, the weight o' acting on the barrel o' and
barrel wheel oº, impart motion through the intermediate pinion of to the hollow
shaft os at one half the velocity of the barrel.
In Figures 1 and 2 the driving strap is on the spinning pulley 61; the
clutch on the wheel e¹ is in gear with the clutch on the internal wheel e' fast
on the front roller 6, and the clutch box is in gear with the clutch on the
wheel k; the friction pulley b¹ is held out of contact with the cone a¹ by the
spring f³, also the friction box g² is held out of contact with the cone g³ by
the cam p¹, seen best in Figures 4 and 5. As the carriage approaches near
the termination of its outward run, the clutches on the wheels e¹ and e' are
separated in the usual manner when the after-draught commences, the slow
motion being produced by the train of wheels e, es, and e', acting through the
wheels e³, j, j¹, and k; this continues until the carriage arrives at the termi-
nation of the outward run, when a stud upon the carriage, conveniently placed,
raises the trigger catch g³ before described, and the first change by the cam shaft
is effected, which withdraws the clutch box from the clutches on the wheel k'.

page_text: During the time that the carriage has been going out, the twist wheel of
has performed more than one revolution, and the latch 98, although raised by
the pin o¹, has not produced any change in the position of the catch lever q,
which is detained by the catch until the carriage has completed its. outward
run; in making a second rotation the pin o¹ raises the catch 9 and liberates
the escapement plate and cams and performs the second change, which
traverses the strap from the pulley b¹ to the pulley f, by the cam p² acting upon
the roller f* on the lever f³, fixed to the upright spindle fe, to which the strap
fork is attached; at the same time the small cam os, see Figures 1 and 6,
acting on the projection from the bent lever f³, presses the friction pulley b¹ on
the cone a', thereby backing off. On the completion of the backing off the
trigger catch q³ is released by the faller lock a second time, and the escapement
plate, as before described, moves by the action of the weight o' from the stop 2
to the stop 3, which performs the third change; this liberates the bent fork
lever f³ from the action of the cam o's, and permits the spring f³ to withdraw
the cone pulley b' from the cone a', it likewise brings the hollow in the cam p¹
opposite the adjustable roller in the lever ko, and permits the spring k² to put
the friction box g³ into contact with the cone g³, which by means of the bevel
pinion acting on the wheel h¹ on the scroll shaft h, and the scrolls h², h³,
and h, and the bands attached to them and the carriage respectively, to take
in the carriage; at the same time the pinion on the squaring shaft k gives
motion to the racks and 11, and likewise through the connecting rod m¹ to
the arm m² connected to the radial arm m, thereby regulating the winding on,
and by means of the wheel e and the catches connected therewith, gives the
requisite motion to the drawing and delivering rollers during the inward run
of the carriage. When the carriage has completed its inward run the faller
shaft i comes in contact with the curved plate 98 on the stop lever q, and
releases the escapement plate and cams from the stop 4, the weight o
replacing them in the positions in Figure 1, and effecting the fourth change,
by which the cam p' withdraws the friction box g³ from the cone g³; the cam p³
permits the strap fork f" to traverse the strap from the pulley f to the pulley b¹,
places the hollow in the cam p³ opposite the end of the connecting rod k which
permits a spring to place the clutch box and k into gear. In the ordinary
manner likewise the catch box on the wheel e' is placed into gear with the
catches on the wheel e', when the various parts resume the positions shewn in
Figures 1 and 2, and above described.
On Sheet 2, Figure 7 is a plan of part of the headstock of a mule con-
structed according to a modification of my Invention; Figure 8, an elevation
of the same. In Figure 7 the rim band pulley 6 is placed at or near the end

page_text: of the rim shaft a, and the cam shaft is vertical. The pulley 6 is bolted to
the flange of the boss a, to the end of which the spinning pulley b' is keyed,
and the bevel pinion 6* is connected to this boss by a key and groove, to allow the
boss to be moved endwise in putting the backing-off friction box in and out of
gear with the friction cone a', and to permit of the pinion being changed.
The rim pulley, which has been shewn attached to a hollow shaft or boss
in the previous combination, may be fixed in the same positions to the ordinary
rim shaft. The cam shaft and all the levers connected therewith are supported
by the bracket s bolted at one end to the end frame of the headstock, and
supported at the other by an adjustable and removeable stud s'. The letters
of reference on the weight oº, the piece p, and escapement plate, with the
differential motion and barrel, and the various levers acted on by the cams and
communicating with the working parts of the machine, are the same as those
marked on Figures 1 and 2, a reference to the description of which will
explain the action of the present arrangement.
In Figures 10 and 11 is shewn a method of employing the power of the
weight o⁹ previously described in reference to Figure 1 for giving motion to a
cam shaft by the intervention of a pitched chain. In the method employed
in Figures 1 and 2 the twist wheel o³ is concentric with the cam shaft and
escapement plate p, in Figures 10 and 11 the twist wheel and the cam shaft
are separated to a convenient distance. The pitched chain t is loaded by a
small weight t, so as to cause it to adhere to the pinions t² and t³, fixed
respectively to the twist wheel o² and to the cam shaft; the weight o³. is
suspended to the axle of a pulley resting on the chain t. The weight o⁹ is
shewn up or in its position when the carriage is at the termination of its out-
ward run, and as the escapement plate p is successively released for the
purpose of effecting the various changes herein-before described, the weight o'
not being able on account of the worm o¹ gearing into the worm wheel o³, on
which the pinion t is fastened, to turn the said twist wheel, the power of the
weight in descending is exerted in turning the cam shaft through the
pinion t which is fastened thereon. The pinion is twice the size of t³, as it
makes only one revolution in the stretch, while the twist wheel makes two.
When the circle of changes has been completed, the twist wheel, connected as
herein-before described with the rim shaft, begins to revolve, and raises the
weight o' to its original position. In Figure 11 the weight is shewn in
two parts, separated so far as to allow the small weight t¹ to rise between
them, to reduce the length of the chain t when desirable. In Figures 12
and 18 one end of the band or chain u is fastened to the carriage i and the
other end to the barrel . cast with the plate u³, in which is fastened the stud

page_text: .
for the catch u³ taking into the ratchet wheel u', which is cast with the chain
pinion above described; the ratchet wheel u is made of sufficient width to
be retained in position by the catch us, the stud of which is secured to the
framing; the band or chain u is rewound on the barrel u¹ by the small
weight u. In the position shewn in the Drawing, the carriage is near the
roller beam; as the carriage gradually moves outwards the band or chain u is
unwound from the barrel u², and the weight o' is raised in the manner above
described by the pinion t; or the band or chain u instead of being secured to
the carriage may be connected to the racks 7 and 11, shewn in Figures 1 and 2,
or to any part in combination with or actuated by the carriage or the racks.
If instead of the pitched chain pinion t the ratchet wheel u* were cast with
the bevel wheel o' of the differential motion described in reference to Figures
1, 2, and 6, the action on the cams for effecting the various changes of the
mule would be precisely the same as that above described. The common
feature in the action of the weight o° in each of the various methods herein-
before described is that, whether it is being raised, or when stationary, or in
the act of descending, its pressure is never removed from the cam shaft.
In Figure 14 v is a long lever, oscillating on the fulcrum v¹; one end of
this lever is provided with the racks and ³, taking alternately into the half
wheel ; is a weight on the lever hinged to the carriage, and resting on
the long lever v by the antifriction roller in the manner described in the
Specification of Letters Patent granted to Robert Halliwell on the Eleventh
day of May One thousand eight hundred and fifty-eight, Number 1058; the
weight is shewn acting upon the rack, which is now in gear with the half
wheel v; when the change at the roller beam has been completed the wheel v*
has made half a revolution, and the assisting spring has turned it so that
the tooth marked is brought into gear with the rack; the carriage now
moves outward, when the escapement plate is released to perform the successive
changes there required; the dropping of the weight on the outer end of the
lever v raises the rack and turns the half wheel ; in performing these
changes half a revolution, the assistant spring placing the tooth * in gear
with the rack ³, thus completing the rotation of the cam shaft. It is evident
from the description that the single change at the roller beam is effected by a
half revolution of the cam shaft, whilst three changes are made by the second
half revolution. To compensate for the difference in weight necessary to
perform these two half revolutions, the fulcrum v¹ of the long lever v is placed
nearer to the racks and than the resting place of the weight v³ at the
termination of the outward run; or the position of the antifriction roller v
may be adjusted on the inner side of the fulcrum v', so as to secure the same

page_text: differential result. The feature in this arrangement is that the weight is not
always resting on the cam shaft, that the same weight which the carriage
raises by its outward and inward motion is the weight which, by its descent,
gives motion to the cam shaft.
Of the various methods herein-before described it is evident that several
modifications may be employed, embracing one or more of the features of
either of them; for example, the carriage may be connected to the band or
chain u as shown in Figure 15; a rod w is mounted in suitable bearings fixed
to the floor or to the framing, the rod w being moved longitudinally by an
elbow lever catch w', whose fulcrum is fastened to the carriage i; on the
carriage reaching the termination of its outward run, the catch w¹ is released
by its pendant arm coming in contact with the stationary inclined plane w²; the
weight u', by which the rod w is returned to its position, is made sufficiently
heavy to give motion through the catch u³ and ratchet wheel u to the cam
shaft, thus performing all its operations by a single descent of the one
weight u'. It is evident from the above description that the cam shaft is free
from the pressure of the weight during the entire portion of the outward run,
during which the catch w¹ is in connection with the rod w. The above operation
is the equivalent of one-half of the action of the lever and weight previously
described in reference to Figure 14, combined with the action of the band or
chain u described in Figures 12 and 13. Or the catch w¹ may be connected
to the racks 1, 11, or to any part actuated by these racks or by the carriage;
the mode of forming and releasing the catch may be modified.
Figure 16 represents another modification of this part of my Invention; the
lever on the fulcrum, instead of being acted upon by a lever weight at
each end of the stretch, as shewn in Figure 14, may be loaded at one end only;
its connection to the cam shaft may either be by means of a single rack v³, v³,
or by the band or chain u; the weight may be raised either by the outward
or the inward run of the carriage; this also is the equivalent of one-half of
the action described under Figure 14.
Having thus described the manner of performing my Invention, I declare
that I claim,
First, placing the rim pulley so that it may be changed at the front, and
the arrangement of the rim bands, in the manner and for the purposes
described.
Secondly, driving the backing-off by an internal wheel, thus dispensing with
the carrier wheel and stud heretofore requisite.
Thirdly, placing the in-taking scrolls and shaft in a vertical position, in the
manner and for the purpose described.

page_text: Fourthly, the combinations of the parts above referred to as shewn in
Figures 1, 2, and 8, and the modifications shewn in Figures 7 and 8, and
described.
Fifthly, the combination or arrangement of the parts for connecting the rim
shaft to the front roller and to the carriage or squaring shaft as shewn and
described, for effecting the after draught, and the respective action of the
rollers and carriage.
Sixthly, imparting an uniform or differential motion from the carriage or
squaring shaft to the winding-on radial arm and to the front roller when the
carriage is going in, as shewn and described in reference to Figures 1, 2,
and 9.
Seventhly, fastening a scroll on the winding-on barrel shaft, or shaft con-
nected therewith, on which the in-taking band is lapped, and through which
the power used for taking in the carriage may aid in driving the spindles, and
on reaching the roller beam may continue to turn the spindles slowly when
the faller is rising, as described.
Eighthly, employing the power derived from distending a spring, or lifting
a weight for giving motion to the cam shaft or cams, the said spring being
charged, or the weight raised by the twist wheel, or by the carriage, or by any
part in connection therewith, and the various methods shewn and described,
or any modifications or combinations thereof for effecting the same.
And, lastly, in making the escapement plate and the various cams required
for producing the different changes in one piece or of one casting.
In witness whereof, I, the said William Robertson, have hereto set
my hand and seal, this Seventh day of May, One thousand eight hun-
dred and sixty-four..
WILLIAM ROBERTSON. (L.S.)