IMPROVEMENTS IN YARNS, AND IN MACHINERY EMPLOYED IN THE MANUFACTURE OF THE SAME
Year: 1880

page_text: LETTERS PATENT to James Edward Wadsworth, of Leeds, in the County of
York, for an Invention of "IMPROVEMENTS IN YARNS, AND IN MACHINERY
EMPLOYED IN THE MANUFACTURE OF THE SAME."
PROVISIONAL SPECIFICATION left by the said James Edward Wadsworth at
"IMPROVEMENTS
the Office of the Commissioners of Patents on the 22nd May 1880.
JAMES EDWARD WADSWORTH, of Leeds, in the County of York.
IN YARNS, AND IN MACHINERY EMPLOYED IN THE MANUFACTURE OF THE SAME."
The object of my Invention is to produce a novel yarn consisting of two or
more spuu threads of any suitable fibrous material, and a "roved or condensed"
thread also of a fibrous material, but preference being given to what is known in
the trade as "short staple," which is cheaper and quite as effective for the purpose
as "long staple."
The herein before mentioned yarn may be manufactured as follows:-
I employ what is known as a twisting machine, which may be of ordinary
construction. The two spun threads are separated behind a back roller provided
for the purpose on the machine, and passed underneath it and over a front roller
also provided on the machine for the purpose. The “condensed or roved" thread
is taken over both back and front rollers, and the front roller being caused to
revolve at a greater speed than the back roller the "condensed or roved" thread is
broken between the two, and the part broken off is carried forward by the two
spun threads and twisted between them on the twisting machine, causing thick
parts or places in the twisted yarn at intervals. The required pressure on the
threads is imparted by means of pressing rollers placed above the hereinbefore
mentioned front and back rollers for feeding, drawing, and breaking purposes.
The number of the thick parts or places may be regulated by the speed of the
rollers.
Various varieties in pattern or appearance of yarn may be obtained by varying
the speed of the rollers and the position of the spun thread.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Edward Wadsworth in the Great Seal Patent Office on the
22nd November 1880.
JAMES EDWARD WADSWORTH, of Leeds, in the County of York.
"IMPROVEMENTS
IN YARNS, AND IN MACHINERY EMPLOYED IN THE MANUFACTURE OF THE SAME."
The object of my Invention is to produce a novel yarn consisting of two or more
spun threads of any suitable fibrous material and a "roved" or "condensed " thread
also of a fibrous material, but preference being given to what is known in the
trade as
"short staple," which is cheaper and quite as effective for the purpose as
"long staple."
The hereinbefore mentioned yarn may be manufactured as follows:-
"
I employ what is known as a twisting machine, which may be of ordinary
construction. The two spun threads are separated behind a back roller provided
for the purpose on the machine, and passed underneath it and over a front roller
also provided for the purpose. The condensed" or "roved" thread is taken over
both back and front rollers, and the front roller being caused to revolve at a greater
speed than the back roller the "condensed or roved" thread is broken between
the two, and the part broken off is carried forward with the two spun threads and
twisted between them on the twisting machine, causing thick parts or places in
the twisted yarn at intervals. The required pressure on the thread is imparted by
means of pressing rollers placed above the hereinbefore mentioned front and back
rollers for feeding, drawing, and breaking purposes. The number of the thick
parts or places may be regulated by the speed of the rollers.
Various varieties in pattern or appearance of yarn inay be obtained by varying
the speed of the rollers and the position of the spun threads.
And in order that my Invention may be more completely understood, reference
is given to the accompanying Sheet of Drawings, and to the letters and marks
thereon.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a front elevation, and Fig. 2 a side elevation, shewing my improvements.
a is the back roller, and 6 the front roller, both of which are fluted; c and d are
the pressing rollers, the whole being mounted in ordinary bearings e and f. I, I,
are the two spun threads; his the "condensed" or "roved" thread. Any required
number of twisted threads g may be employed, also the number of "condensed
or roved" threads h may be increased as desired in order to vary the pattern or
appearance of the yarn.
The arrangement shewn in Drawing represents the construction of my apparatus
as applied to twisting machines, but the same apparatus with slight modifications
may be applied and worked on a spinning frame.
The spun threads g are separated behind the back roller a at i, and passed
'underneath it and over the front roller b. The "condensed" or "roved" thread h
is taken over both back and front rollers, over which the pressing rollers c and d
are provided. I cause the back roller a to revolve at a less speed than the front
'roller b by means of suitable gearing ɩ, whereby the required amount of "draft" is
obtained sufficient to break the "condensed" or "roved" thread between the
front and back rollers in the manner shewn in Drawing at j. That portion j of
the thread h which is broken off is carried forward with the spun threads g and
twisted between them by means of the ordinary spindles on the twisting or
spinning frame.
The number of thick parts or places shewn at m, also the shape or configuration

page_text: of the same, may be varied by increasing or reducing, the speed of the back roller a,
which is effected by change wheels at l.
The various threads are passed to the machine from any convenient source.
Having now described the nature of my said Invention, and described with the
aid of Drawings how the same may be carried into practice, I would have it
understood that I do not limit myself to the precise details or configuration of the
parts I liave described and shewn, as the same may be varied or modified without
departing from the nature of my said Invention, but what I do claim and and desire
to be secured to me by Letters Patent is,-
First. The construction of yarn in the manner described having a condensed or
roved thread or threads at intervals inserted and twisted or spun between two or
more spun threads, causing thereby thick parts or places substantially as herein
set forth.
Second. The means or apparatus employed for forming the yarn, substantially as
herein set forth.
In witness whereof, I, the said James Edward Wadsworth, have hereunto
set my hand and seal, this Sixteenth day of November, in the year of our
Lord One thousand eight hundred and eighty.
JAMES EDWARD WADSWORTH. (L.S.)