IMPROVEMENTS IN DOUBLING THE YARNS OF COTTON, SILK, WOOL, OR OTHER FIBRES
Year: 1876

page_text: LETTERS PATENT to Joseph Cordingley Rawson, of Bradford, in the County
of York, Cotton Spinner, for the Invention of "IMPROVEMENTS IN DOUBLING
THE YARNS OF COTTON, SILK, WOOL, OR OTHER FIBRES."
PROVISIONAL SPECIFICATION left by the said Joseph Cordingley Rawsou at
the Office of the Commissioners of Patents on the 1st August 1876.
JOSEPH CORDINGLEY RAWSON, of Bradford, in the County of York, Cotton
Spinner. "IMPROVEMENTS IN DOUBLING THE YARNS OF COTTON, SILK, WOOL, OR
OTHER FIBRES."
The object of my Invention is to arrange an apparatus that can be applied to
existing yarn doubling machines in such a manner that the spindles of the machine
will be capable of revolving at a much greater velocity, and in proportion to the
increased velocity the machine will double a larger quantity of yarn than is
obtainable by the ordinary practice.
I accomplish my object in the following manner :-I form a metal cylinder, and
leave one end of the same blank, that is, there is no opening through one end of
the cylinder; the cylinder is bored and turned accurately true, and a hole bored
through the blank or bottom end to fit tightly any convenient part of the spindle
on which the cylinder is secured, with the blank or bottom end towards the foot
step of the same. I place the bobbin containing the yarn to be doubled on the said
spindle inside the cylinder, and pass the ends of the yarn through a small hole near
to the top of the said cylinder, and convey the ends to the bobbin to contain the
doubled yarn in the ordinary manner.
By the application of a cylinder secured to the spindle when the machine is in
motion the diameter of the same will not vary by the high velocity, as is the case
with flyers, the ends of which open out or describo a large circle, which causes a
large amount of waste in the yarn.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Joseph Cordingley Rawson in the Great Seal Patent Office on the
31st January 1877.
JOSEPH CORDINGLEY RAWSON, of Bradford, in the County of York, Cotton
Spinnor. "IMPROVEMENTS IN DOUBLING THE YARNS OF COTTON, SILK, WOOL, OR
OTHER FIBRES."
The object of my Invention is to arrange an apparatus that can be applied to
existing yarn-doubling machines in such a manner that the spindles of the machine
will be capable of revolving at a much greater velocity, and in proportion to the
increased velocity the machine will double a larger quantity of yarn than is
obtainable by the ordinary practice.
I accomplish my object in the following manner :-I form a metal cylinder and
leave one end of the same blank, that is, there is no opening through one end of the
cylinder; the inside of the cylinder is bored and the outside turned accurately true,
a hole is bored through the blank or bottom end to fit tightly any convenient part
of the spindle on which the cylinder is to be secured. The blank or bottom end of
the cylinder is fixed towards the foot step of the spindle. I place the bobbin
containing the yarn to be doubled on the spindle inside the said cylinder, and pass
the ends of the yarn through a small hole near to the top or open end of the said
cylinder, and convey the ends of the yarn round a guide pulley secured to the roller
beam to the bobbin containing the doubled yarn that is resting upon the drag
rollers and revolving in ordinary brackets.
By the application of a cylinder secured to each spindle when the machine is set
in motion the diameter of the saine will not vary by the increased high velocity or
number of revolutions, as is the case with flyers; when the velocity is increased
the ends open out and describe a larger circle, which causes a large amount of
waste in the yarn. In proportion to the increased number of revolutions given to
the spindles and cylinders over the flyers the drag rollers will revolve in the same
proportion, and consequently drag and double more yarn than the machines in
common use. With increased velocity of the flyer the drag of the bobbin is
increased in proportion. With my improvement the drag is practically the same.
I will now proceed to describe the accompanying Drawings, in which like parts
are indicated by like letters and figures; the parts of the machine not necessary to
be shown to elucidate my improvement are omitted in the Drawing.
Fig. 1 is an elevation of a spindle fitted with my improved cylinder, shown in
section and a side view of the guide pulley and bracket.
Fig. 2 is an elevation of my improved apparatus as seen when looking in front of
the machine.
The spindle A shown on the Drawings is of the ordinary description, to which is
applied my improved cylinder B. The bobbin containing the yarn to be twisted is
placed on the spindle at A' inside the cylinder, and rests upon an ordinary washer
at the bottom of the said cylinder at B¹. The yarn is passed through the opening C
at the top of cylinder into the hole C', then round the guide pulley D supported by
bracket E secured to roller beam F to the bobbin resting on the drag rollers. When
the machine is in motion the drag rollers, which are not shown in Drawings, being
of the ordinary description draw the yarn round the guide pulley D from off the
bobbin, that is, in the cylinder B which revolves and twists or doubles the yarn
together whilst travelling between the cylinder and guide pulley.
Having thus particularly described my said Invention, and the manner in which
the same is or may be performed, I have to state that I do not restrict myself to
the precise details herein described and delineated, but that what I believe to be
novel and original, and claim as the Invention due to me by the herein-before
described in part recited Letters Patent is, the arranging or combining of the

page_text: pindle and cylinder and parts for doubling yarn, substantially as herein-before
lescribed.
In witness whereof, the said Joseph Cordingley Rawson, hath hereunto set
his hand and seal, this Twenty-ninth day of January, in the year of our Lord
1877.
Signed and sealed by the said
Joseph Cordingley Rawson
in the presence of
JOHN WAUGH,
Engineer & Patent Agent,
Bradford,
York.
J. C. RAWSON. (L.S.)