IMPROVEMENTS IN BOXES OR MACHINES FOR DRAWING, DRAUGHTING, OR PREPARING WOOL AND OTHER FIBROUS MATERIAL
Year: 1879

page_text: LETTERS PATENT to James Mortimer Bottomley, of Buttershaw, in the County
of York, Spinner and Manufacturer, for the Invention of "IMPROVEMENTS IN
BOXES OR MACHINES FOR DRAWING, DRAUGHTING, OR PREPARING WOOL AND
OTHER FIBROUS MATERIAL."
Sealed the 7th November 1879, and dated the 9th May 1879.
PROVISIONAL SPECIFICATION left by the said James Mortimer Bottomley
at the Office of the Commissioners of Patents on the 9th May 1879.
JAMES MORTIMER BOTTOMLEY, of Buttershaw, in the County of York, Spinner
and Manufacturer. " IMPROVEMENTS IN BOXES OR MACHINES FOR DRAWING,
DRAUGHTING, OR PREPARING WOOL AND OTHER FIBROUS MATERIAL."
The object of this Invention is to reduce the cost of wear and tear in that class
of machines used for the drawing off or draughting of wool and other fibrous
substances. Hitherto the wool or other fibrous materials is drawn together to form
the sliver by means of fluted pressure rollers, between which runs an endless band
of leather which also passes round a roller below or above, as the case may be, the
centres of which are also subject to great pressure in order to keep the roller leather
tight. This leather band is soon rendered worthless with the tension and com-
pression to which it is necessarily subject in order to effect its purpose.
My improvement consists in the covering of one or both of the pressure rollers
with caoutchouc or indiarubber tempered to suit, vulcanized or unvulcanized, in
lieu of the leather band; also drawing off rollers hitherto covered with leather.
This improvement reduces in the first instance the cost of the machine, for I am
enabled to dispense with the mechanical arrangement for subjecting the leather
band to tension.
And in the second place the durability of the rollers covered in the manner
described is far greater than the leather band or leather covering which is entirely
dispensed with.
In the third place, on account of the elasticity of the rubber it requires less
pressure, thereby taking considerably less power to drive the machine.
And lastly, I am enabled by my improvement to draw a more even sliver.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Mortimer Bottomley in the Great Seal Patent Office on the
8th November 1879.
JAMES MORTIMER BOTTOMLEY, of Buttershaw, in the County of York, Spinner
and Manufacturer. "IMPROVEMENTS IN BOXES OR MACHINES FOR DRAWING,
DRAUGHTING, OR PREPARING WOOL AND OTHER FIBROUS MATERIAL."
The object of this Invention is to reduce the cost of wear and tear in the class
of machines used for the drawing off or draughting of wool and other fibrous
substances. Hitherto the wool or other fibrous materials is drawn together to form
the sliver by means of fluted pressure rollers, between which runs an endless band
of leather which also passes round a roller placed above or below the pressure
rollers, as the case may be; the centres of these rollers are subjected to great
pressure in order to keep the roller leather tight. This leather band is soon
rendered worthless with the tension and compression to which it is necessarily
subject in order to effect its purpose.
My improvement consists in the covering of one or both of the pressure rollers
with caoutchouc or india rubber, which may be vulcanized or unvulcanized, and is
tempered to suit the purpose to which it is applied; the pressure rollers so covered
are used in lieu of the ordinary leather band and drawing off rollers hitherto
covered with leather.
.
This improvement reduces, in the first instance, the cost of the machine, for by
my improvement 1 am enabled to dispense with the mechanical appliances usually
employed for subjecting the leather band to tension.
In the second place, the durability of the rollers covered in the manner described
is far greater than the ordinary leather band or leather covering; and in conse-
quence of the elasticity of the caoutchouc, which requires less pressure on the
rollers to draw the fibre through the machine, considerably less power is required
to drive the machine.
And in the third place, by covering the pressure roller or rollers in the manner
described the rollers have a more uniform motion, by which means I am enabled to
draw a sliver of more uniform thickness and weight.
Having now set forth the nature of my Invention, and explained the manner of
carrying the same into effect, I wish it to be understood that what I claim as my
Invention is,
The covering with caoutchouc or india rubber the top, bottom, or both pressure
rollers in boxes or machines for drawing, draughting, or preparing wool in lieu of
the leather bands or leather covered pressuré rollers now in common use for drawing
the sliver from the machine.
In witness whereof, I, the said James Mortimer Bottomley, have hereunto set
my hand and seal, this Sixth day of November, in the year of our Lord
One thousand eight hundred and seventy nine.
JAMES MORTIMER BOTTOMLEY. (L.S.)