An Improved Traverse Motion for Winding Cords or Yarns on Bobbins.
Year: 1891

page_text: Date of Application, 2nd June, 1891
Complete Specification Left, 18th Dec., 1891-Accepted, 30th Jan., 1892
PROVISIONAL SPECIFICATION.
An Improved Traverse Motion for Winding Cords or Yarns on
Bobbins.
I, JUNIUS AUGUSTUS MURPHY, of 1300, Tchoupitoulas Street, New Orleans,
in the Parish of Orleans, and State of Louisiana, United States of America,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention has for its object to provide means of automatically controlling
the traverse movement in the flyer of a bobbin, on which cord or yarn is being
wound, in such manner as to cause the same to be wound in parallel close coils
throughout, the bobbin being shifted in the flyer in exact proportion to the rapidity
with which the yarn is wound upon it, whereas, in such traverse motions, as now
used, when the diameter increases, the bobbin becomes shifted more rapidly than
the yarn is wound so that the coils are not close and parallel, but spirals of
gradually longer pitch in successive layers.
The bobbin is fitted loosely on the flyer spindle and the cord or yarn leads from
the capstan barrels over guide pulleys to the bottom, all as usual.
In practice, as is well known, the cord or yarn is fed with regulated speed from
the capstan and the bobbin and flyer both revolve in the same direction, the speed
of the bobbin being the slower and depending on the rapidity with which the yarn
or cord is fed thereto. Further, traverse motions have been provided heretofore
in which the bobbin was shifted laterally by a non-rotating nut which was actuated
by a reversing feed screw, that is a feed screw having right and left threads cut
through or over each other.
In my invention, the shifting nut, as well as the feed screw, is rotated, and in a
like direction, and the difference in rotation of the bobbin and flyer dictates the
difference in rotation between the feed screw and nut and consequently dictates the
amount of traverse movement imparted to the bobbin.
The flyer is carried by a short hollow shaft, driven by a belt from the main
shaft, and through said hollow shaft passes the hollow shaft carrying the bobbin.
The last mentioned shaft has two pulleys of different diameters, the larger one
receiving a belt from a drum on the driving shaft, said belt acting merely as a drag
to the bobbin and not as a driving belt. The driving shaft is also geared by a
belt with a counter shait geared by spur wheels with the reversing feed screw
shaft. The reversing feed screw is of the usual form, and on it travels the shifting
nut, consisting of a sleeve having pivoted in it a swiveled fork which rides in the
threads of the feed screw. The sleeve is geared, by wheel and pinion, with
another countershaft mounted in a bearing in a yoke, and driven by a belt from the
smaller of the two pulleys upon the hollow shaft carrying the bobbin as above
mentioned. The yoke engages between shoulders on the sleeve and has a slide
block that rides upon a guide bar of the frame, a fork rising from the slide block
engaging between the two pulleys on the hollow shaft of the bobbin and serving
to shift the bobbin in response to the movement of the nut along the feed screw.
The reversing feed screw in practice is not practical with threads of a less pitch
than one to the inch and hence the screw and nut are back geared. The shifting
nut is controlled by the bobbin. and if the cord, rope, or yarn, is one eighth inch
in diameter, for example, the connections between the bobbin and the shifting nut
will be such as to cause the latter to rotate one eighth, as fast as the bobbin. The
speed of the feed screw is one eighth that of the flyer.
In operation, if the flyer and bobbin are rotated at the same speed, the nut and
feed screw will rotate at the same speed also, and there can be no traverse

page_text: movement of the nut. In winding, however, as the bobbin falls back a revolution
relatively to the flyer, the nut will fall back one-eighth of a revolution, relatively
to the feed screw and consequently the mut and bobbin will be shifted one-eighth of
an inch, which corresponds to the diameter of the material being wound. The
same amount of traverse motion will be thus imparted to the nut and bobbin,
regardless of the increasing diameter of the bobbin, as it is the relation of the
bobbin and flyer that dictates the fraction difference between the nut and screw.
In effect, therefore, the feeding of the material automatically governs the
shifting. mut through the medium of the bobbin, and when a yarn or cord of a
different diameter is to be wound, the extent of back gear is varied accordingly,
by change pulleys, to give the proper relative speed to the nut and feed screw.
The invention is specially useful for winding bobbins, but it is evident that the
nut, controlled by the bobbin and cord, as explained, may be utilized for shifting
other devices than bobbins.
Dated this 2nd day of June 1891.
J. A. MURPHY.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
An Improved Traverse Motion for Winding Cords or Yarns on
Bobbins.
I, JUNIUS AUGUSTUS MURPHY of 1300, Tchoupitoulas Street, New Orleans
in the Parish of Orleans and State of Louisiana, United States of America,
Manufacturer, 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 following statement:-
This invention relates to means for causing a bobbin to traverse the flyer in
winding cord or yarn on the bobbin and the object of the invention is to provide a
means for automatically controlling the traverse movement of the bobbin to the
end that the cord or yarn will be wound thereon in parallel or close coils
throughout.
In winding bobbins carried by flyers, the traverse motion is now generally
adjusted so that the coils or windings of one layer are close or parallel, but as the
diameter increases the bobbin is shifted in the Hyer more rapidly than the cord or
yarn is wound thereon, so that the coils are not close parallel ones, but the yarn is
instead wound in spirals of gradually longer pitch in the successive layers.
In my invention the cord is closely wound in parallel coils throughout, the
bobbin being shifted exactly in proportion to the rapidity with which the yarn is
wound thereon, as hereinafter fully explained.
Reference is to be had to the accompanying drawings forming a part of this
Specification, in which similar reference characters indicate corresponding parts in
all the figures.
Figure 1 is a side elevation of a flyer and bobbin having my improved traverse
motion applied thereto;
Figure 2 is a transverse section on line 2-2 in Figure 1;
Figure 3 is a longitudinal sectional view of the shifting nut; and
Figure 4 is a cross sectional view thereof, on line 4-4 in Figure 3.
The flyer A, is provided with the bobbin B, which is fitted loosely on the
spindle a, in the usual manner and to said bobbin the cord or yarn 10, leads from
the capstan barrels A, over guide pulleys a', a', as usual.
In practice, as is well known, the cord or yarn 10 is fed with regulated speed
from the capstan A', and the bobbin and flyer both revolve in the same direction,

page_text: the speed of the bobbin being the slower and depending on the rapidity with which
the yarn or cord is fed thereto. Further, traverse motions have been provided
heretofore in which the bobbin was shifted laterally by a non-rotating nut which
was actuated by a reversing feed screw, that is, a feed screw having right and left
threads cut through or over each other.
In my invention the shifting nut as well as the feed screw is rotated, and in a
like direction, and the difference in rotation of the bobbin and flyer dictates the
difference in rotation between the feed screw and nut, and consequently dictates
the amount of traverse movement imparted to the bobbin.
The flyer A, at one end is secured to the short hollow shaft A², which has a
bearing in the bracket a³, and carries a pulley a³. The bracket a², and similar
brackets forming bearings for the shafts hereinafter mentioned, are supported
from cross bars 21, of the frame 20. Any other suitable bearings may be provided
in practice.
The pulley a³ is driven by a belt a', from a pulley c, on the driving or main
shaft C, which has its bearings in the brackets C, C¹
The hollow shaft 13' which carries the bobbin B extends through the shaft A'
and carries the pulleys B, B3, of which the pulley 13 receives a belt 6', from a
long pulley, on the driving shaft C, said belt acting merely as a drag to the
bobbin and not as a driving belt.
The shaft C is further provided with a pulley c², from which a belt d, passes to
the pulley D on a short shaft D', which has a bearing in the bracket d. On the
shaft D', is a pinion D², which meshes with a gear wheel F, on the shaft E, which
is supported in brackets e, and on said shaft E is formed or secured the reversing
feed screw E, of the usual form.
The
The shifting nut F, is fitted on the feed screw E, and consists of a sleeve having
the swiveled fork F¹, which rides in the threads of the said feed screw.
shifting nut is provided with a gear wheel F, which meshes with and is driven by
a pinion, the shaft of which carries a driving pulley G, driven by a belt 12, from
pulley B³, and said shaft has a bearing in the sleeve h, on the lower end of the
yoke H. The yoke H is secured to the shifting nut between collars f, and is
formed with a block H', which rides on the slide 1, formed on the frame 20.
Above the block H', the yoke H is provided with a fork . which is received
between the pulleys B2, B3, on the hollow shaft B, of the bobbin, said fork
serving to shift the bobbin in response to the movement of the nut.
The reversing feed screw in practice is not practical with threads of a less pitch
than one to the inch, and hence the screw and nut are back geared.
The shifting nut, it will be observed, is controlled by the bobbin and if the
cord, rope or yarn is one eighth of an inch in diameter, for example, the
connections between the bobbin and the shifting nut will be such as to cause
the latter to rotate one eighth as fast as the bobbin. The speed of the feed screw
is one eighth that of the flyer.
.
In operation, if the flyer and bobbin are rotated at the same speed, the nut and
feed screw will rotate at the same speed also and there can be no traverse move-
ment of the nut. In winding, however, as the bobbin falls back a revolution
relatively to the flyer, the nut will fall back one eighth of a revolution relatively
to the feed screw and consequently the nut and bobbin will be shifted one eighth
of an inch, which corresponds to the diameter of the material being wound. The
same amount of traverse motion will be thus imparted to the nut and bobbin
regardless of the increasing diameter of the bobbin, as it is the relation of the
bobbin and flyer that dictates the fractional difference of speed between the nut
and screw.
In effect therefore, the feeding of the material automatically governs the shifting
nut through the medium of the bobbin, and when a yarn or cord of a different
diameter is to be wound, the extent of back gear is varied accordingly, by
replacing the pulleys D and G for instance, to give the proper relative speed to
the nut and feed screw.

page_text: The invention is specially useful for winding bobbins, but it is evident that the
nut controlled by the bobbin and cord as explained, may be utilized for shifting
other devices than bobbins.
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 1
claim is
1. In a traverse motion for bobbins, shifting devices connected with and
controlled from the bobbin, substantially as described.
2. In a traverse motion for bobbins, a feed screw and nut, both mounted to
rotate in the same direction, and connections, substantially as described, for
shifting the bobbin in response to the difference in the speed of rotation of the said
nut and screw.
3. In a traverse motion for bobbins, a feed screw and shifting nut mounted to
rotate in the same direction, the speed of the mut or the feed screw being
controlled from the bobbin, substantially as described.
4. In a traverse motion for bobbins, the combination, with the flyer or bobbin,
of a rotary feed screw having a fixed speed relatively to the flyer, and a nut
thereon having a fixed speed relatively to the bobbin, and connections between the
bobbin and nut, whereby the changing relations of the bobbin and flyer will result
in a difference in speed between the screw and nut, substantially as described
Dated this 18th day of December 1891. .
J. A. MURPHY.
By. A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.