IMPROVEMENTS IN SPINNING, DRAWING, ROVING, TWISTING, AND RE-DOUBLING MACHINERY
Year: 1880

page_text: LETTERS PATENT to Thomas Craven, Spinner and Manufacturer, and John
Crabtree, Managing Overlooker, both of Keighley, in the County of York, for
an Invention of "IMPROVEMENTS IN SPINNING, DRAWING, ROVING, TWISTING,
AND RE-DOUBLING MACHINERY."
PROVISIONAL SPECIFICATION left by the said Thomas Craven and John
Crabtree at the Office of the Commissioners of Patents on the 29th January
1880.
THOMAS CRAVEN, Spinner and Manufacturer, and JOHN CRABTREE, Managing
Overlooker, both of Keighley, in the County of York. "IMPROVEMENTS IN
SPINNING, DRAWING, ROVING, TWISTING, AND RE-DOUBLING MACHINERY."
The object of our Invention is to arrange ordinary spinning, drawing, roving,
twisting, and doubling machines in such a manner that we are enabled to use
ordinary bobbins, and manipulate the fibrous materials passing through the machine
with what are known as ordinary fly and cap worsted spindles used in conjunction
with a traversing ring rail.
We accomplish our object in the following manner:-In place of the usual lifter
rail in ordinary spinning, twisting, doubling, roving, and drawing machines we
substitute a traversing ring rail such as is used in ring spinning machines. To each
of the spindles we secure an adjustable tube having a flange near the bottom of the
same in which are fitted on the top side one or more projections which pass into
recesses formed in the bobbin flange when placed upon the spindle. We can also
secure or fix the bobbins on the spindles by means of two or more springs secured
to the portion of the spindle known as the traverse.
When the machine is set in motion the yarn passes through the ring traveller to
the fixed bobbin on the spindle, which by our arrangement revolves at the same
rate of speed as the spindle on which it is secured; the ring rail traverses in a
vertical direction and builds the yarn on to the bobbins, as is the case when used
in connection with ring spinning spindles, and makes a similar bobbin to what is.
made on an ordinary fly and cap spinning or twisting frame.
By this combination of the ring rail with the ordinary worsted spindles we are
enabled to run the same at a much quicker speed than can be accomplished when
using flyers, consequently producing more weight of yarn in proportion to the
increased speed, and of a better and smoother quality in consequence of the vibration
of the spindles being reduced to a minimum. In order to protect the yarn from
becoming entangled with the screw thread at the top of the ordinary spindles we
screw a small cap on the same of such a diameter that the bobbins will pass over on
to the spindles.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Craven and John Crabtree in the Great Seal Patent Office
on the 28th July 1880.
THOMAS CRAVEN, Spinner and Manufacturer, and JOHN CRABTREE, Managing
"IMPROVEMENTS IN
Overlooker, both of Keighley, in the County of York.
SPINNING, DRAWING, ROVING, TWISTING, AND DOUBLING MACHINERY."
The object of our Invention is to apply to the ordinary spinning, drawing, roving,
twisting, and doubling frames a traversing ring rail in lieu of the usual flyers
and caps.
By this arrangement the ordinary bobbins can be used or bobbins of a larger 1
size (often used in weaving goods of wide width), and the spindles can be run at
double the speed of ordinary fly spindles without the slightest increase in the
vibration of the same.
We accomplish our object in the following manner :—
In place of the usual lifter rail used in ordinary spinning frames we substitute a 1
traversing ring rail such as is used in ring spinning machines. To each of the
spindles we secure an adjustable tube having a flange at the end of the same, in
which are secured on the top side one or more pins which pass into recesses formed
in the bobbin flange when placed upon the spindle, or in place of the adjustable
tube we can secure a collar with projecting springs for holding the bobbin, which s
answers the same purpose as the adjustable tube.
When the machine is in motion the yarn passes from the front rollers through
the ring traveller to the bobbins on the spindles, which by our arrangement revolve
at the same rate of speed as the spindles. The ring rail traverses in a vertical
direction, and is regulated by an ordinary lifter which builds the yarn on to the 2
bobbins and makes a similar bobbin when finished to what is made on an ordinary
fly or cap spindle.
By the combination of the ring rail with ordinary worsted spindles we are
enabled to place longer bobbins on the spindles, and build more yarn on to the
bobbins, and to run the same at about double the speed with less vibration than is:
the case when flyers or caps are used, in consequence of the removal of the weight
of flyers or caps from the tops of the spindles by which the vibration is reduced to
a minimum, a smoother yarn is produced, and in proportion to the increased speed
more weight of fibre is passed through the machine.
By our arrangement the facility for doffing is greatly augmented by the removal:
of obstacles from the top of the spindles, such as flyers and caps, thus giving the
doffers the utmost freedom in removing the full bobbins.
The foregoing part of the Specification describes the modus operandi for spinning,
but we wish it to be understood that our improvement is also applicable to
doubling, drawing, roving, twisting, and redoubling machines, and the treatment of
the respective machines is the same as that described for spinning.
What we claim as our Invention is,―
The application of a traversing ring rail to an ordinary fly or cap spinning or

page_text: and not as in ordinary frames a traversing bobbin, substantially in the manner
and for the purpose before described.
In witness whereof, I, the said Thomas Craven, for and on behalf of myself
and the said John Crabtree, have hereunto set my hand and seal, this
Twenty seventh day of July, in the year of our Lord One thousand eight
hundred and eighty.
Witness to the signature of
the said Thomas Craven
ALFRED BOTTOMLEY.
THOMAS CRAVEN. (L.S.)