IMPROVEMENTS IN . APPARATUS FOR SPINNING, ROVING, AND TWISTING FIBROUS SUBSTANCES
Year: 1881

page_text: LETTERS PATENT to John Johnson Broadbent and Edward Mitchell, both of
Bradford, in the County of York, for an Invention of "IMPROVEMENTS IN
.
APPARATUS FOR SPINNING, ROVING, AND TWISTING FIBROUS SUBSTANCES."
PROVISIONAL SPECIFICATION left by the said John Johnson Broadbent
and Edward Mitchell at the Office of the Commissioners of Patents on the
30th July 1881.
JOHN JOHNSON BROADBENT and EDWARD MITCHELL, both of Bradford, in the
County of York. "IMPROVEMENTS IN APPARATUS FOR SPINNING, ROVING, AND
TWISTING FIBROUS SUBSTANCES."
Our Invention relates to improvements in that class of spinning known as cap
spinning, and has for its object the combination of the ring and traveller, with the
ordinary cap, whereby we are enabled to utilize the present cap frame and spindles
and produce a smoother and therefore better yarn than can be obtained by the
ordinary cap.
We accomplish our object by forming the bottom part of the cap larger in
diameter than the body. This enlarged part is so constructed as to have a flange at
the extreme end of the cap, and a groove formed at the inside diameter between
the said flange and the body or parallel part of cap, by which arrangement a ring
is formed somewhat similar to those used in ring spinning frames. Around this
flange we place an ordinary traveller, through which the yarn passes in its travel
from the front rollers to the bobbin on the ordinary tube and spindle, and which
is driven in the usual manner.
Our Invention is equally applicable for roving and twisting frames, and is carried
into effect in the same manner as that described for spinning.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Johnson Broadbent and Edward Mitchell in the Great Seal
Patent Office on the 30th January 1882.
JOHN JOHNSON BROADBENT and EDWARD MITCHELL, both of Bradford, in the
County of York. "IMPROVEMENTS IN APPARATUS FOR SPINNING, ROVING, AND
TWISTING FIBROUS SUBSTANCES.”
Our Invention relates to improvements, in that class of spinning known as "cap"
spinning, and has for its object the combination of a ring and traveller with caps
used for the roving, spinning, or twisting of fibrous substances, whereby we are
enabled to utilize the present cap frames and spindles and to produce a smoother,
fuller, and therefore better yarn than can be obtained by the use of caps as
ordinarily constructed.
The Invention consists in forming at the bottom part of the cap a collar, which
collar is so arranged that flanges are formed thereon which constitute the ring,
upon which is placed an ordinary traveller similar to those used on ring spinning
frames. Our improved ring can be applied to caps of various sizes to suit the
dimensions of the bobbins upon which the fibre is being manipulated, and when
used for roving or twisting is carried into effect exactly in the same manner as
that described for spinning.
In the accompanying Drawings Figure 1 represents an elevation of an ordinary.
fixed spindle, which carries at its upper end a cap with our improved ring fitted
thereto; Figure 2 is an elevation of a cap with our improved ring fitted thereto,
constructed in a different manner to that shewn by Figure 1. Both Figures are
partly in section, and corresponding parts are indicated by similar letters.
The caps are indicated by the letter A and fitted to the ordinary spindles B,
which are secured in the usual manner to what is commonly known as the top
rail C of the frame. Each spindle is encased by a revolving tube and wharl D
upon which the bobbin E is placed, and to which rotating motion is cominunicated
in the usual manner. On the bottom part of the caps is shrunk collar F, in which
are cut the grooves or flanges G, thereby forming a ring somewhat similar to those
used on ring spinning machines.
On each of these rings is placed a traveller H through or against which the
yarn is made to pass in its travel from the front rollers to the bobbin E on the
-tube-which-is-driven-and-traversed-in-the-same-manner.as.in.ordinary.cap.spinning
machines.
By passing the yarn through or against the traveller H, and substituting travellers
of different weights and sizes for different classes of yarn, we are enabled to
regulate the amount of "drag" on the yarn to such an extent that we can raise
the caps considerably nearer to the guide boards, that when manipulating the
fibre with caps as ordinarily constructed thereby, by bringing the caps nearer to
the guide boards the yarn has to travel a shorter distance from the guide board to
the bobbin on the spindle and in proportion to the reduced distance, the yarn
in revolving describes a circle of less diameter and passes through the air with
less force, thus reducing the liability of the passage of the air through and opening
out the yarn, which causes it to be rough and "stary" as is the case with ordinary
cap spinning.
What we claim as our Invention is,―
The combination of the cap A with the collar F, having the grooves or flanges G,

page_text: The combination of a cap with a ring constructed to carry a traveller secured
thereon, substantially for the purpose described.
In witness whereof, I, the said John Johnson Broadbent, for and on behalf
of myself and the said Edward Mitchell, have hereunto set my hand and
seal, this Twenty-seventh day of January, in the year of our Lord One
thousand eight hundred and eighty two.
Witness,
JOHN WAUGH,
Engineering and Patent Offices,
Bradford.
J. J. BROADBENT (L.s.)