Improvements in Mechanism for Guiding and Applying Tension to Spindle-driving Bands of Spinning, Twisting, Winding, and similar Machines.
Year: 1897

page_text: Date of Application, 10th Nov., 1897
Complete Specification Left, 26th July, 1898-Accepted, 15th Oct., 1898
PROVISIONAL SPECIFICATION.
Improvements in Mechanism for Guiding and Applying Tension to
Spindle-driving Bands of Spinning, Twisting, Winding, and
similar Machines.
I, JOHN BOYD, of Shettleston Iron Works, in the County of Lanark, Engineer,
do hereby declare the nature of this invention to be as follows;-
This invention comprises improvements designed for spinning, twisting, wind-
ing and similar machines for fibrous materials and pertains particularly to the
spindle-driving bands for said machinery and to improved devices for guiding
or guiding and tensioning said bands whereby a regular rotary motion is imparted
to the spindles (or in case of dead spindles to the tubes or flyers which work thereon)
and a uniform twist is imparted to the fibrous material which may be twisted
thereby; and the invention consists mainly in using in combination with the
driving cylinders or pulleys which actuate said bands, auxiliary idle cylinders or
shafts each carrying two or more pulleys peculiarly arranged and constructed for
the purpose of guiding or guiding and tensioning the bands (which may be flat or
round) and that with a minimum expenditure of power.
In one modification of my improved mechanism applied to a section of an ordinary
ring spinning frame having spindles on each side all driven by one endless spindle
driving band actuated by a central horizontal driving cylinder (the top of which
is slightly under the centre of the pulleys of the spindles on each side) an
auxiliary idle cylinder which may be placed (when there is room for
it) right under the driving cylinder for the purpose of guiding and tensioning the
band. The auxiliary cylinder is carried by a swinging bracket having a project-
ing arm with an adjustable weight and on its other side at its two opposite corners
pivoted centres by which it is hinged to fixed parts of the framing or to brackets.
fixed thereon and on one of the brackets or on the framing there are snugs between
which one arm of the carrier swings and by which its radial motion is limited.
The centres of the carrier are by preferance made parallel with its cylinder and
the latter is not set parallel with the horizontal driving cylinder but higher at one
end so that in addition to tensioning the band it may also guide all the coils of
the latter passing round the two cylinders (as will afterwards be explained) that
they may all be made to run entirely clear of one another. The auxiliary
cylinder (when working in this angled position) has a live footstep spindle at its
lower end working into a cup bush of the carrier, and a dead spindle work-
ing in a cup bush of the cylinder at its higher end so as to retain
oil and be easily lubricated. When 'banding' the spindles, beginning
at one end of the auxiliary cylinder the band is taken alternately
right round the two cylinders and round two of the ring spindles one on each side
till the last two spindles are banded after which the band is taken round two
guide pulleys (placed nearly at opposite ends of the frame or section thereof) and
back to the starting point when the two ends of the hand are fastened together
66

page_text: after being drawn tight so as to bring the auxiliary cylinder as close as it can be
drawn to the driving cylinder. The auxiliary cylinder in this modification is
pulled away from the driving cylinder by its own weight and that of the carrier
and its adjustable weight and thereby very equally tensions and takes up the slack
of all the loops of the spindle-driving band which pass round the two cylinders
(which according to the length of the auxiliary cylinder and the pitch of the
spinning frame may vary from two coils and upwards) the band giving at the same
time a regular rotary motion to all the ring spindles it drives.
In a second modification of my improved mechanism applied to a section of a
spinning frame which may be made narrower than usual, the frame, the ring
spindle, the spindle-driving band, the driving cylinder, the auxiliary cylinder
are all much in the same relation to one another as in the first modification but
in this case the spindles are banded in a different way which causes less rubbing
of the band on the driving cylinder and only one centre guide pulley is used as
the other guide pulley may be dispensed with and the band carried instead a
second time round the last spindle of the section; and instead of the auxiliary
cylinder being mounted on a hinged and weighted carrier by which in tensioning
the driving band the auxiliary cylinder is made to move equally at both ends to
and from the driving cylinder the oscillating frame is dispensed with and the
auxiliary cylinder has its lower live spindle end working into a socket piece jointed
to the frame, or to the lower end of a fixed frame bracket and at its higher end
has its dead spindle carried by a sliding piece which slides within certain limits
in a slot formed in the upper part of a similar bracket which thus serves a double
purpose when in a frame auxiliary cylinders of adjacent sections come together.
The jointed socket piece and the sliding piece may be connected by rods or may
be cast in one piece like the cylinder carrier of first modification and in this
modification the auxiliary cylinder only moves to any extent to and from the
driving cylinder at one end thereby guiding and tensioning all the loops of
the band which are passed round both cylinders in the banding of the frame by the
weight of the auxiliary cylinder and the weight of the sliding piece and rods the
weight of which may be increased by hanging extra weights on two side horns
forming part of sliding piece or otherwise.
A third modification of my improved mechanism in which the auxiliary cylinder
is only used for the purpose of guiding all the coils of the spindle driving band
or bands that pass round both cylinders so as to keep the coils clear of one another,
can be used to advantage in various ways.
In one arrangement, embraced by above, the frame, the ring spindles, the driving
cylinder, the auxiliary cylinder, and the guide pulley, are all again in much the
same relative position and the auxiliary cylinder is again angled as in the two first
modifications but in this case it is carried and revolves on stationary frame centres
or bearances and the tensioning and taking up of the slack of the band is accom-
plished by a separate suspended tension pulley with a sliding carriage and a
carriage slide for same such as is described in the Patent No. 17166 of 1895 (or by
some other tensioning mechanism) and for this purpose a coil of the band instead
of being passed round both the cylinders (like all the other coils) is passed from
the driving cylinder round the pulley which with the weight of its carriage
suspended on it tightens and takes up the slack of the band through its whole
length.
In a second way the third modification can be used to advantage in combination
with a radial arm lever carrying at its outer end a guide pulley which being pulled
backwards by a spring or weight is made to act as a tension pulley as well as a
guide pulley on the band, the same result being accomplished by a sliding carriage
carrying the guiding and tensioning pulley, the band in these two modifications
being carried round a second guide pulley as in the first modification.
While it is desirable in this stationary auxiliary cylinder modification to have
an auxiliary cylinder for each long band driving a number of spindles on each side
more than one long band may be used in combination with one auxiliary cylinder,

page_text: each band driving different lots of spindles, and each provided with a guide pulley
and a tension pulley of some kind, if necessary.
Instead of the auxiliary cylinder being angled longitudinally in relation to the
driving cylinder as described in the foregoing modifications for the purpose of
guiding the band, it may be angled transversely which will serve the same pur-
pose though not quite so well.
When it is required (as in stop motion twisters) to cause the banding to run
clear of parts of mechanism immediately behind the spindles it may be necessary
in some cases to angle the auxiliary cylinder in relation to its driving cylinder
both longitudinally and transversely.
Almost any of the above modifications of mechanism could be applied with
advantage to machines of that class having two long central cylinders (working
side by side) and driving spindles on both sides of the frame with a band to each
cylinder but in such cases it is preferable in applying any of the foregoing
modifications to take away one of the cylinders and put in its place auxiliary
angled cylinder mechanisms in sections as described.
When the auxiliary cylinder of any one of the foregoing modifications is used
at one side of a driving cylinder instead of under it, it is preferable to have live
spindles revolving in cup bushes at both ends of it as the latter in this case though
angled as formerly in relation to the driving cylinder may be worked to advantage
in a horizontal or almost horizontal position various other parts of the mechanism
would also require to be altered in form to adapt them properly for the positions
they would then occupy.
In a fourth modification of my improved mechanism applied to a section of a
flyer spinning. frame having spindles on one side only, all driven by one endless
spindle-driving band actuated by a horizontal driving cylinder, a movable auxiliary
idle cylinder is placed between the spindles and the driving cylinder and a little
lower than the latter for the purpose of guiding and tensioning the band. The
auxiliary cylinder is carried by a swinging bracket which may be made all in
one piece as in the first modification, or it may be made of two bell crank pieces
fixed rigidly at the opposite ends of a shaft, the bell crank arm of each piece having
an adjustable weight and pivoted centres formed by the projecting ends of the
shaft, by which it is hinged to fixed parts of the framing or to brackets fixed
thereon and on one or both of the brackets or in the framing snugs between which
a projection of the carrier swings and by which its radial motion is limited. The
auxiliary cylinder may in this case be made parallel with the driving cylinder and
is made to strain the loops of the endless band in the direction of the driving
cylinder. In banding the spindles, the band is taken from beginning to end of
the section alternately over the auxiliary cylinder under and over the driving
cylinder and round one of the flyer spindles, lastly round two guide pulleys back
to the starting point when the band is tightened and the two ends fastened
together.
Instead of the loops of the band being strained by the adjustable weights hang-
ing on the bell crank arms of the swing bracket both or one of the end pieces may
have a lever projecting downwards, an oscillating screwed nut at its extreme end,
and a screw let into same by the outer end of which projecting in front of the
machine the strain on the bands can be easily adjusted, which method of tighten-.
ing bands can also be applied when desirable to some of the other modifications.
Flat as well as round bands (if not too broad) can be used with the first three
modifications if the spindle pulleys and other pulleys are made suitable for same.
All four modifications can be easily adapted so that the driving and auxiliary
cylinders may be placed above the line of the pulleys of spindles which they are
driving and the last modification can also be casily adapted for driving spindles
in a horizontal or angled position.
D
af Nanamhor 1907

page_text: Improvements in Mechanism for Guiding and Applying Tension to
Spindle driving Bands of Spinning, Twisting, Winding, and
similar Machines.
I, JOHN BOYD, of Shettleston Iron Works, in the County of Lanark, Engineer,
do hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the follow-
ing statement:-
This invention comprises improvements designed for spinning, twisting, wind-
ing and similar machines for fibrous materials and pertains particularly to the
spindle-driving bands for said machinery and to improved devices for guiding
or guiding and tensioning said bands whereby a regular rotary motion is imparted
to the spindles (or in case of dead spindles to the tubes or flyers which work thereon)
and a uniform twist is imparted to the fibrous material which may be twisted
thereby; and the invention consists mainly in using in combination with the
driving cylinders or pulleys which actuate said bands, auxiliary idle cylinders or
shafts each carrying two or more pulleys peculiarly arranged and constructed for
the purpose of guiding or guiding and tensioning the bands (which may be flat or
round) and that with a minimum expenditure of power.
In one modification of my improved mechanism applied to a section of an ordinary
ring spinning frame having spindles on each side all driven by one endless spindle
driving band actuated by a central horizontal driving cylinder (the top of which
is slightly under the centre of the pulleys of the spindles on each side) an
auxiliary idle cylinder is provided which may be placed (when there is room for
it) right under the driving cylinder for the purpose of guiding and tensioning the
band. The auxiliary cylinder is carried by a swinging bracket having a project-
ing arm with an adjustable weight and on its other side at its two opposite corners
pivoted centres by which it is hinged to fixed parts of the framing or to brackets
fixed thereon and on one of the brackets or on the framing there are snugs between
which one arm of the carrier swings and by which its radial motion is limited.
The centres of the carrier are by preference made parallel with its cylinder and
the latter is not set parallel with the horizontal driving cylinder but higher at one
end so that in addition to tensioning the band it may also guide all the coils of
the latter passing round the two cylinders (as will afterwards be explained) that
they may all be made to run entirely clear of one another. The auxiliary
cylinder (when working in this angled position) has a live footstep spindle at its
lower end working into a cup bush of the carrier, and a dead spindle work-
ing in a cup bush of the cylinder at its higher end so ag to
$6
"
retain
oil and be easily lubricated. When banding the spindles, beginning
at one end of the auxiliary cylinder the band is taken alternately
right round the two cylinders and round two of the ring spindles one on each side
till the last two spindles are banded after which the band is taken round two
guide pulleys (placed nearly at opposite ends of the frame or section thereof) and
back to the starting point when the two ends of the band are fastened together
after being drawn tight so as to bring the auxiliary cylinder as close as it can be
drawn to the driving cylinder. The auxiliary cylinder in this modification is
pulled away from the driving cylinder by its own weight and that of the carrier
and its adjustable weight and thereby very equally tensions and takes up the slack
of all the loops of the spindle-driving band which pass round the two cylinders
(which according to the length of the auxiliary cylinder and the pitch of the

page_text: spinning frame may vary from two coils and upwards) the band giving at the same
time a regular rotary motion to all the ring spindles it drives.
In a second modification of my improved mechanism applied to a section of a
spinning frame which may be made narrower than usual, the frame, the ring
spindles the spindle-driving band, the driving cylinder, and the auxiliary cylinder
are all much in the same relation to one another as in the first modification but
in this case the spindles are banded in a different way which causes less rubbing
of the band on the driving cylinder and only one centre guide pulley is used as
the other guide pulley may be dispensed with and the band carried instead a
second time round the last spindle of the section; and instead of the auxiliary
cylinder being mounted on a hinged and weighted carrier by which in tensioning
the driving band the auxiliary cylinder is made to move equally at both ends to
and from the driving cylinder the oscillating frame is dispensed with and the
auxiliary cylinder has its lower live spindle end working into a socket piece jointed
to the frame, or to the lower end of a fixed frame bracket and at its higher end,
has its dead spindle carried by a sliding piece which slides within certain limits
in a slot formed in the upper part of a similar bracket which thus serves a double
purpose when in a frame auxiliary cylinders of adjacent sections come together.
The jointed socket-piece and the sliding-piece may be connected by rods, or may
be cast in one piece like the cylinder carrier of first modification, and in this
modification the auxiliary cylinder only moves to any extent to and from the
driving cylinder at one end, thereby guiding and tensioning all the loops of
the band which are passed round both cylinders in the banding of the frame by the
weight of the auxiliary cylinder and the weight of the sliding piece and rods tho
weight of which may be increased by hanging extra weights on two side horns
forming part of sliding piece or otherwise.
A third modification of my improved mechanism in which the auxiliary cylinder
is only used for the purpose of guiding all the coils of the spindle driving band
or bands that pass round both cylinders so as to keep the coils clear of one another,
can be used to advantage in various ways.
In one arrangement, embraced by above, the frame, the ring spindles, the driving
cylinder, the auxiliary cylinder and the guide pulley, are all again in much the
same relative position and the auxiliary cylinder is again angled as in the two first
modifications but in this case it is carried and revolves on stationary frame centres
or bearances and the tensioning and taking up of the slack of the band is accom-
plished by a separate suspended tension pulley with a sliding carriage and a
carriage slide for same such as is described in the Patent No. 17166 of 1895 (or by
some other tensioning mechanism) and for this purpose a coil of the band instead
of being passed round both the cylinders (like all the other coils) is passed from
the driving cylinder round the pulley which with the weight of its carriage
suspended on it tightens and takes up the slack of the band through its whole
length.
In a second way the third modification can be used to advantage in combination
with a radial arm lever carrying at its outer end a guide pulley which being pulled
backwards by a spring or weight is made to act as a tension pulley as well as a
guide pulley on the band, the same result being accomplished by a sliding carriage
carrying the guiding and tensioning pulley, the band in these two modifications
being carried round a second guide pulley as in the first modification.
While it is desirable in this stationary angled auxiliary cylinder modification to have
an auxiliary cylinder for each long band driving a number of spindles on each side
more than one long band may be used in combination with one auxiliary cylinder,
each band driving different lots of spindles, and each provided with a guide pulley
and a tension pulley of some kind, if necessary.
Instead of the auxiliary cylinder being angled longitudinally in relation to the
driving cylinder as described in the foregoing modifications for the purpose of
guiding the band, it may be angled transversely which will serve the same pur-
pose though not quite so well.

page_text: When it is required (as in stop motion twisters) to cause the banding to run
clear of parts of mechanism immediately behind the spindles it may be necessary
in some cases to angle the auxiliary cylinder in relation to its driving cylinder
both longitudinally and transversely.
Almost any of the above modifications of mechanism could be applied with
advantage to machines of that class having two long central cylinders (working
side by side) and driving spindles on both sides of the frame with a band to each
cylinder, but in such cases it is preferable in applying any of the foregoing
modifications to take away one of the cylinders and put in its place auxiliary
angled cylinder mechanisms in sections as described.
When the auxiliary cylinder of any one of the foregoing modifications is used
at one side of a driving cylinder instead of under it, it is preferable to have live
spindles revolving in cup bushes at both ends of it as the latter in this case though
angled as formerly in relation to the driving cylinder may be worked to advantage
in a horizontal or almost horizontal position various other parts of the mechanism
would also require to be altered in form to adapt them properly for the positions
they would then occupy.
In a fourth modification of my improved mechanism applied to a section of a
flyer spinning frame having spindles on one side only, all driven by one endless
spindle-driving band actuated by a horizontal driving cylinder, a moveable auxiliary
idle cylinder is placed between the spindles and the driving cylinder and a little
lower than the latter for the purpose of guiding and tensioning the band. The
auxiliary cylinder is carried by a swinging bracket which may be made all in
one piece as in the first modification, or it may be made of two bell crank pieces
fixed rigidly at the opposite ends of a shaft, the bell crank arm of each piece having
an adjustable weight and pivoted centres formed by the projecting ends of the
shaft, by which it is hinged to fixed parts of the framing or to brackets fixed
thereon and on one or both of the brackets or in the framing snugs between which
a projection of the carrier swings and by which its radial motion is limited. The
auxiliary cylinder may in this case be made parallel with the driving cylinder and
is made to strain the loops of the endless band in the direction of the driving
cylinder. In banding the spindles, the band is taken from beginning to end of
the section alternately over the auxiliary cylinder under and over the driving
cylinder and round one of the flyer spindles, lastly round two guide pulleys back
to the starting point when the band is tightened and the two ends fastened
together.
Instead of the loops of the band being strained by the adjustable weights hang-
ing on the bell crank arms of the swing bracket both or one of the end pieces may
have a lever projecting downwards, an oscillating screwed nut at its extreme end,
and a screw let into same by the outer end of which projecting in front of the
machine the strain on the band can be easily adjusted, which method of tighten-
ing bands can also be applied when desirable to some of the other modifications.
In order more fully to describe my improvements and to show how they can be
carried into effect, I will describe their application as shown in the four accom-
panying sheets of drawings.
On Sheet 1, Figure 1, is a vertical section of so much of a spinning frame as is
necessary to illustrate certain parts of one modification of my invention; Fig. 2
is a front elevation, and Fig. 3 a plan of same, and Figures 4 to 9 are separate
views of some details of Figs. 1, 2 and 3.
On Sheet 2, Fig. 10 is a vertical section, Fig. 11 a front view and Fig. 12 a
plan of another modification, and Figs. 13 to 19 are separate views of some details
of same.
On Sheet 3, Fig. 20 is a vertical section, and Fig. 21 is a plan of a third
modification, and in same sheet, Figs. 22 and 23 are other two plan views of this
modification.
On Sheet 4 Fig. 24 is a vertical section and Fig. 25 a plan view of a fourth

page_text: modification, and Figures 26 and 27 are other two views showing another arrange.
ment of same.
In these drawings the same reference numerals are used to mark the same or
like parts wherever they are repeated.
In one modification of my improved mechanism Figs. 1, 2 and 3, Sheet 1, applied
to a section of an ordinary ring spinning frame 19 having eight spindles 20 on
each side all driven by one endless spindle driving band 21 actuated by a central
horizontal driving cylinder 22 (the top of which is slightly under the centre of the
pulleys of the spindles 20 on each side) an auxiliary idle cylinder 23 is provided
which may be placed (when there is room for it) right under the driving cylinder 22
for the purpose of guiding and tensioning the band 21. The auxiliary cylinder 23
is carried by a swinging bracket 24, Figures 4 and 5 having a projecting arm 25
with an adjustable weight 26, and on its other side at its two opposite corners
pivoted centres 27 and 28 by which it is hinged to fixed parts of the framing 19
or to brackets 29 and 30 Figures 6 to 9 fixed thereon and on one of the brackets
or on the framing there are snugs 31 and 32 between which one arm of the carrier 24
swings and by which its radial motion is limited. The centres 27 and 28 of the
carrier are by preference made parallel with its cylinder 23 and the latter is not
set parallel with the horizontal driving cylinder but higher at one end so that in
addition to tensioning the band 21 it may also guide all the coils of the latter
passing round the two cylinders 22 and 23 (as will afterwards be explained) that
they may all be made to run entirely clear of one another. The auxiliary cylinder 23
(when working in this angled position) has a live footstep spindle 33 at its lower
end working into a cup bush of the carrier 24 and a dead spindle 34 working in
a cup bush of the cylinder 23 at its higher end so as to retain oil and be easily
lubricated. When "banding" the spindles 20 beginning at one end of the
auxiliary cylinder 23 the band is taken alternately right round the two cylinders 22
and 23 and round two of the ring spindles 20 one on each side till the last two
spindles are banded after which the band is taken round two guide pulleys 35
and 36 (placed nearly at opposite ends of the frame or section thereof) and back
to the starting point, when the two ends of the band are fastened together after
being drawn tight so as to bring the auxiliary cylinder 23 as close as it can be
drawn to the driving cylinder 22. The direction of revolution is indicated by
arrows. The auxiliary cylinder in this modification is pulled away from the
driving cylinder 22 by its own weight and that of the carrier 24 and its adjustable
weight 26 and thereby very equally tensions and takes up the slack of all the loops
of the spindle driving band which pass round the two cylinders (which according
to the length of the auxiliary cylinder and the pitch of the spinning frame may
vary from two coils and upwards) the band giving at the same time a regular
rotary motion to all the ring spindles it drives.
It is not necessary in all cases that the auxiliary cylinder should work in an
angled position though that is the preferable arrangement in most cases.
It can
sometimes be used in the position of having its axis parallel to that of the driving
cylinder. The same remark applies to the next modification herein described.
In a second modification of my improved mechanism Figs. 10 to 19, Sheet 2,
applied to a section of a spinning frame which may be made as shown narrower
than usual, the frame 19, the ring spindles 20 (eight on each side) the spindle-
driving band 21, the driving cylinder 22, the auxiliary cylinder 23, are all shown
much in the same relation to one another as in the first modification, but in this
case the spindles 20 are shown banded in a different way which causes less rubbing
of the band on the driving cylinder 22, and only one centre guide pulley 35 is used
as the other guide pulley 36 may be dispensed with and the band 21 carried instead
a second time round the last spindle 20 of the section; and instead of the auxiliary
cylinder 23 being mounted on a hinged and weighted carrier 24 by which in
tensioning the driving band 21 the auxiliary cylinder is made to move equally at
both ends to and from the driving cylinder 22 the oscillating frame 24 is dispensed
with and the auxiliary cylinder has its lower live spindle end 33 working into a

page_text: socket piece 37 jointed to the frame 19 or to the lower end of a fixed frame
bracket 38 and at its higher end has its dead spindle 34 carried by a sliding piece 39
which slides within certain limits in a slot formed in the upper part of a similar
bracket 38 which thus serves a double purpose when in a frame auxiliary cylinders
of adjacent sections come together. The jointed socket piece 37 and the sliding
piece 39 may be connected by rods 40 or may be cast in one piece like the cylinder
carrier 24 of first modification and in this modification the auxiliary cylinder 23
only moves to any extent to and from the driving cylinder 22 at one end thereby
guiding and tensioning all the loops of the band which are passed round both
cylinders in the banding of the frame-by the weight of the auxiliary cylinder
and the weight of the sliding piece 39 and rods 40 the weight of which may be
increased by hanging extra weights 42 and 43 on two side horns forming part of
sliding piece 39 or otherwise.
A third modification of my improved mechanism, Figs. 20 and 21, Sheet 3, in
which the auxiliary cylinder 23 is only used for the purpose of guiding all the coils
of the spindle-driving band or bands that pass round both cylinders 22 and 23 so
as to keep the coils clear of one another, can be used to advantage in various ways.
In one arrangement, embraced by above, the frame 19, the ring spindles 20,
(eight on each side), the driving cylinder 22, the auxiliary cylinder 23 and the
guide pulley 35 are all again shown in much the same relative position and the
auxiliary cylinder is again angled as in the two first modifications, but in this
case it is carried and revolves on stationary frame centres or bearances 38 and the
tensioning and taking up of the slack of the band 21 is accomplished by a separate
suspended tension pulley 44 with a sliding carriage 45 and a carriage slide for
same 46 such as is described in the Patent No. 17166 of 1895 (or by some other
tensioning mechanism) and for this purpose a coil of the band 21 instead of being
passed round both the cylinders 22 and 23 (like all the other coils) is passed from
the driving cylinder 22 round the pulley 44 which with the weight of its carriage 45
suspended on it tightens and takes up the slack of the band through its whole
length. Twelve of the spindles 20 (six on each side) all driven by one band 21
are shown working in this manner.
In this modification instead of the bands being carried alternately round the
two cylinders 22 & 23 and round one spindle 20 on each side as in the former
modification it is shown carried alternately once round the two cylinders 22 & 23
and round two spindles 20 on each side which makes the banding much easier
and the band much shorter.
In a second way the third modification, as shown in Fig. 22, Sheet 3, (which
is a plan view of a combination of parts similar to Fig. 20 and 21) can be used to
advantage in combination with a radial arm lever 47 carrying at its outer end a
guide pulley 35 which being pulled backwards by a spring or weight is made to
act as a tension pulley as well as a guide pulley on the band 21, the same result
being accomplished, see Fig. 23, by a sliding carriage 48 carrying the guiding
and tensioning pulley 35, the band 21 in these two modifications being carried
round a second guide pulley 36 as in the first modification, Figs. 1 and 2.
While it is desirable in this stationary angled auxiliary cylinder modification
to have an auxiliary cylinder 23 for each long band 21 driving a number of spindles
on each side more than one long band may be used in combination with one
auxiliary cylinder 23, each band driving different lots of spindles 20 and each
provided with a guide pulley and a tension pulley of some kind if necessary.
Instead of the auxiliary cylinder 23 being angled longitudinally in relation to
the driving cylinder 22 as shown and described in the foregoing modifications for
the purpose of guiding the band 21, it may be angled transversely which will serve
the same purpose though not quite so well.
When it is required (as in stop motion twisters) to cause the banding to run
clear of parts of mechanism immediately behind the spindles it may be necessary
in some cases to angle the auxiliary cylinder in relation to its driving cylinder both
longitudinally and transversely.

page_text: Almost any of the above modifications of mechanism could be applied with
advantage to machines of that class having two long central cylinders (working
side by side) and driving spindles on both sides of the frame with a band to each
auxiliary cylinder but in such cases it is preferable in applying any of the fore-
going modifications to take away one of the cylinders and put in its place auxiliary
angled cylinder mechanisms in sections as described.
When the auxiliary cylinder 23 of any one of the foregoing modifications is used
at one side of a driving cylinder 23 instead of under it, it is preferable to have
live spindles 33 revolving in cup bushes, such as are shown in Figs. 4 and 9 at both
ends of it, as the latter in this case though angled as formerly in relation to the
driving cylinder 23 may be worked to advantage in a horizontal or almost horizontal
position various other parts of the mechanism would also require to be altered in
form to adapt them properly for the positions they would then occupy.
In a fourth modification of my improved mechanism, Figs. 24 and 25, applied
to a section of a flyer spinning frame 19 having five spindles 20 on one side only,
all driven by one endless spindle driving band 21 (which in this modification is
shown working with a flat band or belt) actuated by a horizontal driving cylinder 22,
a movable auxiliary idle cylinder 23 is placed between the spindles 20 and the
driving cylinder and a little lower than the latter for the purpose of guiding and
tensioning the band 21. The auxiliary cylinder 23 is carried by a swinging
bracket 24 which may be made all in one piece as in the first modification, Fig. 4,
or as shown in Fig. 24, it may be made of two bell crank pieces fixed rigidly at the
opposite ends of a shaft the bell crank arm 25 of each piece having an adjustable
weight 26 and pivotted centres 27 and 28 formed by the projecting ends of the shaft
by which it is hinged to fixed parts of the framing 19 or to brackets 29 and 30
fixed thereon and on one or both of the brackets, or in the framing are snugs 31
and 32 between which a projection of the carrier 24 swings and by which its radial-
motion is limited. The auxiliary cylinder 23 may in this case be made parallel
with the driving cylinder 22 and is made to strain the loops of the endless band
in the direction of the driving cylinder. In banding the spindles 20 the band 21
is taken from beginning to end of the section alternately over the auxiliary
cylinder 23 under and over the driving cylinder 22 and round one of the flyer
spindles 20 and lastly round two guide pulleys 35 and 36 back to the starting
point when the band is tightened and the two ends fastened together.
Instead of the loops of the band 21 being strained by the adjustable weights 26
hanging on the bell crank arms 25 of the swing bracket 24 both or one of the end
pieces may have a lever projecting downwards as shown in Figs. 26 and 27 an
oscillating screwed nut 49 at its extreme end and a screw 50 let into same by the
outer end of which projecting in front of the machine the strain on the band can
be easily adjusted which method of tightening bands can also be applied when
desirable to some of the other modifications.
By extending any of the four modifications of my improved mechanism a much
large number of spindles can be driven by one band than it is possible to show in
the drawings referring to same.
Flat as well as round bands (if not too broad) can be used with the first three
modifications if the spindle pulleys 20 and other pulleys are made suitable for
same.
All four modifications can be easily adapted so that the driving and auxiliary
cylinders may be placed above the line of the pulleys of spindles which they are
driving and the last modification can be easily adapted for driving spindles in a
horizontal or angled position.
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:-
In spinning, twisting and winding and similar machines;

page_text: of guiding and tensioning two or more coils of an endless band when driving
spindles on each side.
2. The use of an angled and movable auxiliary idle cylinder 23 for the purpose
of guiding and tensioning two or more coils of an endless band 21 when driving
spindles 20 on each side substantially as hereinbefore described with reference to
Figures 1 to 9 of accompanying drawings.
3. The use of an angled and movable auxiliary idle cylinder 23 for the purposes
referred to in Claim No. 1 substantially as hereinbefore described with reference
to Figs. 10 to 19.
4. The use of an angled and stationary auxiliary cylinder for the purpose of guid-
ing an endless band when driving spindles on each side in combination with a
separate tensioning mechanism.
5. The use of an angled and stationary auxiliary cylinder 23 for the purpose of
guiding an endless band 21 when driving spindles 20 on each side in combination
with a separate tensioning mechanism substantially as hereinbefore described with
reference to Figs. 20, 21, 22 and 23.
6. The use of a movable idle auxiliary cylinder for the purpose of guiding and
tensioning two or more coils of an endless band driving spindles on one side of it.
7. The use of a movable idle auxiliary cylinder 23 for the purpose of guiding
and tensioning two or more coils of an endless band 21 driving spindles 20 on
one side of it substantially as herein before described with reference to Figs. 24
and 25.