IMPROVEMENTS IN MACHINERY FOR SPINNING AND TWISTING FIBRES
Year: 1880

page_text: LETTERS PATENT to Samuel Tweedale, of Accrington, in the County of
Lancaster, Foreman Mechanic, for an Invention of IMPROVEMENTS IN
COMPLETE SPECIFICATION filed by the said Samuel Tweedale at the Office
of the Commissioners of Patents on the 5th May 1880.
SAMUEL TWEEDALE, of Accrington, in the County of Lancaster, Foreman Mechanic.
"IMPROVEMENTS IN MACHINERY FOR SPINNING AND TWISTING FIBRES."
In "
ring" spinning apparatus of the class to which this Invention relates, the
lower portion of the spindle is received within a tubular "bolster" of cast iron,
the bottom part of which forms the footstep for the spindle, and the tubular bolster
contains a quantity of oil which supplies the spindle and its footstep with
lubrication.
The oil through centrifugal action caused by the rapid rotation of the spindle
rises within the tube and lubricates the spindle.
In practise it is found that notwithstanding care in the moulding and casting
the tubular bolster it is not uncommon for moulders' sand to be incorporated with
the metal of which the tubular bolster is composed and such defect is revealed only
when the spindle has "run" or been in use for a time.
The sand and grit is thus mixed with the oil and causes undue wear and tear of
and friction on the spindle foot and footstep, the sand being raised by the agitation
of the oil caused by the spindle revolving, and when the spindle ceases to revolve
the sand and grit again descend and reach the footstep within the bolster.
The object of this my Invention is that when sand or grit ascend as and from
the cause above referred to, soon as the spindle ceases to revolve and the sand and
grit descend, the sand and grit are "trapped" or permitted to settle within a recess
or receptacle provided therefor in the lower part of the tubular bolster.
The recess or receptacle for sand or grit is formed when boring or cutting the
interior of the bolster by leaving a projecting rim around the bore or hole for the
spindle, or by cutting a V or other formed recess in the shoulder over or above
the footstep, or when the "bolster" is "bored through" and a plug is afterwards
forced into the bolster the said plug will at its upper end have first formed or
D

page_text: turned thereon a shoulder, so that when the plug is in its place, the space between
the shoulder and the interior of the tube form a recess or cavity into which sand
and grit gravitate after being raised by rotation of spindle as above described.
Such being the nature and object of this my said Invention, in order that the
same may be fully understood I have hereunto annexed a Sheet of Drawings
fully illustrating the construction of apparatus for purpose above.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a vertical section of tubular bolster having recess or receptacle for
collection of sand or grit; Figure 2 is a like section; Figure 3 is a section of bolster
having plug footstep and recess or receptacle for sand or grit, the several Figures
being drawn about twice ordinary size in order the better to illustrate construction.
A is the tubular bolster; B, the footstep; C, the projecting rim; D, the recess or
receptacle for sand or grit.
Referring now to Figure 3, A is the tubular bolster ; F, the plug (driven or forced
in and secured by soldering or otherwise as ordinary), and having shoulder G turned
thereon, the space H between the shoulder G and interior of the tube at J forming
the recess or cavity into which sand or grit will descend as described.
Having thus fully described the nature and particulars of this my said Invention
together with the manner in which the same is to be performed or carried into
practical effect, I would have it understood that I do not confine myself to the
precise form of recess or cavity, nor to such being constructed at the precise point
or position shown in relation to the footstep and interior of the tube, as such may
be varied without departing from the Invention.
What I do claim is,-
The construction, application, and use of tubular bolster having the recess or
receptacle for purpose herein described and as illustrated.
In witness whereof, I, the said Samuel Tweedale, have hereunto set my hand
and seal, this First day of May, in the year of our Lord One thousand
eight hundred and eighty.
SAMUEL TWEEDALE.
(L.S.)