IMPROVEMENTS IN RINGS AND TRAVELLERS OF RING AND TRAVELLER SPINNING FRAMES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I ALEXANDER MELVILLE CLARK of the firm of A. M. and W™ Clark of
53 Chancery Lane in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of the said invention for "IMPROVEMENTS IN
RINGS AND TRAVELLERS OF RING AND TRAVELLER SPINNING FRAMES (A commu-
nication to me from abroad by Jean Jacques Bourcart of Zurich, Switzerland,) to be
as follows:-
"
This Invention relates to improvements in the rings and travellers of ring
spinning frames and has for object to enable the yarn to be wound on small as well
as on large diameters with equal facility as'in Mules. When winding on the small
diameter of the cop, the tension being then almost radial, has the effect of pulling
the traveller forcibly against the edge of the ring, whereby the thread is frequently
broken instead of carrying the traveller round.
By the improvements of this Invention of which various examples are represented
in the annexed drawings, presenting slight differences in form but all having the
same essential character, this difficulty is obviated, the carrying round of the
traveller being always ensured even at the commencement of the formation of
the cop, and when winding on the bare spindle.
This improved traveller consists essentially of two arms or branches, the one
being more or less vertical and the. other directed towards the inside of the ring
and through or around which the thread passes or is twisted. These two branches
can be more or less long and of variable form, straight or undulating with or
without eye. These differences of form and length distinguish the examples which
are represented in the drawings being differences of detail which do not however
affect their identity of principle.
Figures 1 to 10 show the travellers in position on the rings in section. These
various rings may be of any form, but those shown in Figures 2, 5, 7, 8, 9 and 10
are preferable as they greatly facilitate the lubrication of the ring, the oil flowing
always towards the interior or exterior by reason of the inclination of the ring.
Figure 1 shows a small traveller mounted on an ordinary ring. Figure 2 shows
an elongated traveller mounted on a ring whose flange or rim is inclined towards

page_text: the centre. Figure 3 shows a greatly elongated traveller mounted on an ordinary
ring. Figure 4 shows a very elongated traveller upon a ring with internal flange.
Figure 5 represents a traveller with an eye on each branch mounted on an
externally flanged ring. Figure 6 shows a traveller on a ring having a horizontal
race and internal vertical flange. Figure 7 shows a traveller mounted on a conical
ring. Figure 8 shows a traveller with an internal undulating branch adapted to a
ring with inwardly curved lip. Figure 9 represents a traveller on a ring with an
internal race. Figure 10 represents a traveller with internal undulating branch on
a ring with an external race.
In all these figures a is the first branch or arm bis the second or internal branch
or arm of the traveller. c is the thread and d represents the ring.
In the arrangements described the traveller does not work in the same manner
us those heretofore known which have prolongations for balancing them and to
produce vertical compensating oscillations etc.
In the present system the upright part of the thread forms an axis around
which the traveller gyrates and whirls whilst being relatively held suspended
thereby owing to the great friction of the thread in the traveller. Its action may
be appropriately compared to that of a conical pendulum, following the same laws
whereby it compensates any irregularity in mounting the ring particularly as
regards its want of concentricity with the spindle and the irregularities in spinning,
the centre of rotation of the conical pendulum thus constituted being the thread
guide above the spindle, and the axis of rotation the spindle itself, which it is
unnecessary to represent in the drawing.
It follows from this that the centre of gravity of the traveller is more or less
movable and that it is free to a certain extent to follow the tangent to its circular
movement when any cause tends to make it do so.
To spin with this traveller a b, it is suitably placed on a ring d, the thread c is
passed under the angular portion between the branches a and b; or it is wound
once or several times round the branches a and b or only around one of them.
There is consequently considerable friction between the thread and the traveller.
The thread is thus on the one hand the support by which the traveller is suspended
and on the other the means by which it is carried along. The revolving spindle
tends to wind on the thread leaving the branch b and imparts to the double
traveller a b a tangential impulse which it follows until it encounters the ring d;
then the traveller is again drawn by the spindle and thread and receives a fresh
tangential impulse. Thus whilst turning around the spindle the traveller skips
and describes cycloidal curves relatively to the circumference of the ring. The
winding on necessarily takes place whatever may be the diameter on which the
thread is wound, because by reason of these repeated shocks the thread is drawn
by the rotation of the spindle through the traveller whose motion is momentarily
retarded. The friction of the traveller on the ring acts as a regulator but this
action is very feeble and is only due to its own weight and its tangential inertia
and in no way either to the radial tension of the thread or to centrifugal action.
It is especially in this mode of action that this traveller differs from all others
and thus permits of winding tightly on the smallest diameters of spindles. In this
case the spindle draws the traveller until it is beyond its axis, when it acts as a
lever and follows almost without effort the revolution of the spindle, this movement
once acquired it assumes a tangent to its circular movement, strikes against the
ring and recoils against the spindle and thus oscillates between the two whilst
winding on the thread.

page_text: COMPLETE SPECIFICATION.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
RINGS AND TRAVELLERS OF RING AND TRAVELLER SPINNING FRAMES" (a communi-
cation to me from abroad by Jean Jacques Bourcart of Zurich, Switzerland,) 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 improvements in the rings and travellers of ring
spinning frames and has for its object to enable the yarn to be wound on small as
well as on large diameters with equal facility as in mules. When winding on the
small diameter of the cop, the tension being then almost radial, has the effect of
pulling the traveller forcibly against the edge of the ring whereby the thread is
frequently broken instead of carrying the traveller round.
By the improvements of this Invention of which various examples are represented
in the annexed drawings, presenting slight differences in form but all having the
same essential character, this difficulty is obviated, the carrying round of the
traveller being always ensured even at the commencement of the formation of the
cop, and when winding on the bare spindle.
This improved traveller consists essentially of two arms or branches, the one
being more or less vertical and the other directed towards the inside of the ring
and through or around which the thread passes or is twisted. These two branches
can be more or less long and of variable form, straight or undulating with or
without eye. These differences of form and length distinguish the examples which
are represented in the drawings being differences of detail which do not however
affect their identity of principle.
Figures 1 to 10 show the travellers in position on the rings in section. These
various rings may be of any form, but those shown in Figures 2, 5, 7, 8, 9 and 10
are preferable as they greatly facilitate the lubrication of the ring, the oil flowing
always towards the interior or exterior by reason of the inclination of the ring.
Figure 1 shows a small traveller mounted on an ordinary ring. Figure 2 shows
an elongated traveller mounted on a ring whose flange or rim is inclined towards
the centre. Figure 8 shows a greatly elongated traveller mounted on an ordinary
ring. Figure 4 shows a very elongated traveller upon a ring with internal flange.
Figure 5 represents a traveller with an eye on each branch mounted on an
externally flanged ring. Figure 6 shows a traveller on a ring having a horizontal
race and internal vertical flange. Figure 7 shows a traveller mounted on a conical
ring. Figure 8 shows a traveller with an internal undulating branch adapted to a
ring with inwardly curved lip. Figure 9 represents a traveller on a ring with an
internal race. Figure 10 represents a traveller with internal undulating branch on
a ring with an external race.
In all these figures a is the first branch or arm b is the second or internal branch
or arm of the traveller. o is the thread and d represents the ring.
In the arrangements described the traveller does not work in the same manner
as those heretofore known which have prolongations for balancing them and to
produce vertical compensating oscillations etc.
In the present system the upright part of the thread forms an axis around which
the traveller gyrates and whirls whilst being relatively held suspended thereby owing
to the great friction of the thread in the traveller. Its action may be appropriately
compared to that of a conical pendulum, following the same laws whereby it
compensates any irregularity in mounting the ring particularly as regards its want
of concentricity with the spindle and the irregularities in spinning, the centre of
rotation of the conical pendulum thus constituted being the thread guide above
the spindle, and the axis of rotation the spindle itself, which it is unnecessary to
represent in the drawing.

page_text: It follows from this that the centre of gravity of the traveller is more or less
moveable and that it is free to a certain extent to follow the tangent to its circular
movement when any cause tends to make it do so.
To spin with this traveller ab it is suitably placed on a ring d, the thread c is
passed under the angular portion between the branches a and b; or it is wound.
once or several times round the branches a and b or only around one of them
There is consequently considerable friction between the thread and the traveller.
The thread is thus on the one hand the support by which the traveller is suspended.
and on the other the means by which it is carried along. The revolving spindle
tends to wind on the thread leaving the branch b and imparts to the double
traveller a b a tangential impulse which it follows until it encounters the ring d;
then the traveller is again drawn by the spindle and thread and receives a fresh
tangential impulse. Thus whilst turning around the spindle the traveller skips
and describes cycloidal curves relatively to the circumference of the ring. The
winding on necessarily takes place whatever may be the diameter on which the
thread is wound, because by reason of these repeated shocks the thread is drawn
by the rotation of the spindle through the traveller whose motion is momentarily
retarded. The friction of the traveller on the ring acts as a regulator but this
action is very feeble and is only due to its own weight and its tangential inertia
and in no way either to the radial tension of the thread or to centrifugal action.
It is especially in this mode of action that this traveller differs from all others
and thus permits of winding tightly on the smallest diameters of spindles. In this
case the spindle draws the traveller until it is beyond its axis, when it acts as a
lever and follows almost without effort the revolution of the spindle, this movement
once acquired it assumes a tangent to its circular movement, strikes against the
ring and recoils against the spindle and thus oscillates between the two whilst
winding on the thread.
Figures 11, 12, 13, 14 and 15 show further variations in the form of the improved
traveller of this Invention. In these examples it will be seen that the branch b is
slightly bent at the end, whereby the tension of the thread itself is made to balance
the traveller and thus ensure the result before stated viz:-"that the spindle
draws the traveller until it is beyond its axis when it acts as a lever and follows
almost without effort the revolution of the spindle."
The branch a is inside the ring and the angle x formed between the branches
a and b to facilitate the attachment of the thread is outside the ring and also serves
together with the downward extension e to balance the traveller. In this manner
the thread on being passed once through the loop a will wind itself twice upon the
wire, the traveller being thus perfectly balanced. These several features all concur
in balancing the traveller and preventing it from jumping out of the ring or
becoming broken as it is liable to do at the speeds now imparted to spindles of
8000 revolutions per minute.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that
what I claim is :-
A traveller for ring spinning frames with two branches one being nearly vertical
and the other extending more or less directly towards the centre of the ring, the
said branches being made of any form undulating or otherwise and with or without
eyes, as hereindescribed and illustrated in the drawings.
Dated this 1st day of December 1901