IMPROVEMENTS IN MACHINERY FOR SPINNING, TWISTING, OR DOUBLING FIBROUS MATERIALS
Year: 1876

page_text: LETTERS PATENT to John Clayton Mewburn, of 169, Fleet Street, in the City
of London, Patent Agent and Consulting Engineer, for the Invention of
"IMPROVEMENTS IN MACHINERY FOR SPINNING, TWISTING, OR DOUBLING
FIBROUS MATERIALS." A communication from abroad by Octave Hippolyte
Noiret, of Rethel, France.
Sealed the 23rd May 1876, and dated the 5th February 1876.
PROVISIONAL SPECIFICATION left by the said John Clayton Mewburn at
the Office of the Commissioners of Patents on the 5th February 1876.
JOHN CLAYTON MEWBURN, of 169, Fleet Street, in the City of London, Patent
Agent and Consulting Engineer. "IMPROVEMENTS IN MACHINERY FOR SPINNING,
TWISTING, OR DOUBLING FIBROUS MATERIALS."
Owing to the great speed at which the flyers of spinning, twisting, or doubling
machines rotate, a draught is produced which causes the threads to flutter when
they break, and to become entangled or "married" with others, and waste and
imperfections result. In order to overcome this defect a wooden cylinder clothed
with velvet has been fitted under the drawing roller of the machine for the purpose
of seizing the thread immediately it breaks. But the almost vertical position of
the thread and at the same time the draught caused by the flyer, cause it to be
thrown over the neighbouring threads before the cylinder can seize it.
Now according to this Invention the clothed cylinder is placed in the same
horizontal line as the roller, it is actuated by the roller itself and maintained in this
position by an inclined support upon which its axle rests, and which takes the
place of the weighted levers hitherto employed for the purpose. Its position in
relation to the roller and its weight suffice to draw it without any other power.
The thread leaves the roller almost horizontally, and is led over a cylindrical guide
bar furnished with small pulleys over which the thread runs, and from which it is
led perpendicularly to the spindle as in the old way.
The pulleys on the guide bar are also sometimes replaced by screws, and when
the thread is sufficiently strong it is given one turn around the screw. If the
thread breaks between the spindle and the guide bar it is held at its end, and the
roller continuing to deliver it allows it to fall upon the clothed cylinder which
immediately seizes it. If there are two threads to be twisted or doubled and one
of them breaks before reaching the roller, the other being drawn by a tension that

page_text: is too strong for a single thread which is untwisted and has no strength, will break
on the spindle, will become sluck, and before it has escaped from the guide bar will
be seized by the cylinder.
If both the threads break on the bobbin or the spindle the same effect takes
place, because at the least retardation in the winding of the thread on the bobbin it
is seized by the cylinders and cannot possibly be thrown over the other threads.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Clayton Mewburn in the Great Seal Patent Office on the 29th
May 1876.
JOHN CLAYTON MEWBURN, of 169, Fleet Street, in the City of London, Patent
Agent and Consulting Engineer. "IMPROVEMENTS IN MACHINERY FOR SPINNING,
TWISTING, OR DOUBLING FIBROUS MATERIALS." (A communication to me from
abroad by Octave Hippolyte Noiret, of Rethel, France.)
Owing to the great speed at which the spindles of spinning, twisting, or doubling
machines rotate, a draught is produced which causes the threads to flutter when
they break, and to become entangled or "married with others, and waste and
imperfections result.
In order to overcome this defect a wooden cylinder clothed
with velvet has been fitted under the drawing roller of the machine for the purpose
of seizing the thread immediately it breaks. But the almost vertical position of
the thread and at the same time the draught caused by the flyer, cause it to be
thrown over the neighbouring threads before the cylinder can seize it.
Now the present Invention is intended to overcome these defects and to prevent
the waste produced by the causes above described, and it consists in causing the
thread on leaving the drawing roller to take a horizontal position, which allows of
placing the clothed cylinder in front of the roller instead of beneath it as hitherto,
in compelling the threads which break to fall upon the clothed cylinder instead of
being thrown over other threads as is frequently the case when the cylinder is
placed below the roller, in obtaining a smoother and firmer thread by its friction
when twisting on a board covered with cloth or other stuff, and in producing a
greater perfection in the threads by suppressing the causes of irregularity while
economising hand labor and diminishing waste, all as herein-after described.
The accompanying Drawings represent a machine or throstle frame constructed
according to this Invention.
Below
In the Figures A is the pressure roller; B, the drawing roller; C, the clothed
cylinder; D, its support; E, the thread guide bar; F, the twizzles or pigtails; N, a
board covered with velvet or cloth; O, a stop free to slide on the bar E and
regulating the inclination of the board N. The cylinder C is placed in the same
horizontal line as the roller B, it is actuated by the roller itself and maintained in
this position by a simple support D upon which its axle rests, and which takes the
place of the weighted levers hitherto employed for the purpose. Its position in
relation to the roller and its weight suffice to draw it without any other power.
The thread I leaving the roller B almost horizontally is led over the cylindrical
guide bar E furnished with small pulleys J over which the thread runs.
this bar E is the movable board N covered with cloth, velvet, or other stuff on
which the thread I, the bits or irregularities of which would project during the
work, rubs lightly while twisting. This friction sinooths the thread and makes it
more solid or firm, in fact the covering or cloth on the board N takes the place of a
brush and causes the bits or irregularities to be wrapped up in the thread by the
act of twisting. The thread I is then led to the spindle L, as in the old way passing
through the pigtail F. The pulleys on the guide bar E are also sometimes replaced
by screws, and when the thread is sufficiently strong it is given one turn around
the screw.
If the thread breaks between the spindle and the guide bar it is held at
its end, and the roller continuing to deliver it, allows it to fall upon the clothed

page_text: cylinder C which immediately seizes it. If there are two threads to be twisted or
doubled and one of them breaks before reaching the roller, the other being drawn
by a tension that is too strong for a single thread which is untwisted and has no
strength, will break on the spindle, will become slack, and before it has escaped from
the guide bar will be seized by the cylinder. If both the threads break on the
bobbin or the spindle the same effect takes place, because at the least retardation in
the winding of the thread on the bobbin it is seized by the cylinder and cannot
possibly be thrown over the other threads.
The arrangement above described does not interfere with the various operations
of "taking-off" or at all complicate the work. It diminishes hand work, the
attendant having only a single thread to connect or piece instead of two or three
which is frequently the case when a broken thread is thrown over the adjoining
threads. Attendants of less intelligence will answer because they have not to see
if the thread to be pieced or connected is defective, but only to connect broken
threads. It also allows of increase of speed and consequently of increased pro-
duction without fear of "marrying" and it reduces the amount of waste. The bar
E may carry pulleys J or screws J¹ as shewn in Figure 4. The board N is movable
in all directions in order that the thread may not always rub in the same place. It
may be arranged in different ways according to the kind of machine, and placed in
any other suitable position.
And having now described the nature of the said Invention and in what manner
the same is to be performed, I declare that I claim the improvements in machinery
for spinning, twisting, or doubling fibrous materials herein-before described and
represented in the accompanying Drawings.
In witness whereof, I, the said John Clayton Mewburn, have hereunto set my
hand and seal, this Twenty-ninth day of May, One thousand eight hundred
and seventy-six.
J. C. MEWBURN. (1.8.)