IMPROVEMENTS, IN MACHINERY OR APPARATUS FOR SPINNING AND DOUBLING COTTON AND OTHER FIBROUS MATERIALS."
Year: 1879

page_text: COMPLETE SPECIFICATION filed by the said Thomas Coulthard at the Office
of the Commissioners of Patents on the 22nd July 1879.
THOMAS COULTHARD, of the Firm of H. Booth and Co., Machinists, of Preston, in
the County of Lancaster. IMPROVEMENTS, IN MACHINERY OR APPARATUS FOR
SPINNING AND DOUBLING COTTON AND OTHER FIBROUS MATERIALS."
.
My improvements in machinery or apparatus for spinning and doubling cotton
and other fibrous materials have reference to that class of spindle apparatus for
employment in ring and traveller throstles, wherein the, spindle bearing is in a
bolster surrounded by an oil cup or reservoir for lubricant, covered by a flange at
or near the lower part of a metallic sleeve or shell mounted on the spindle above
the bolster, and extending downward around it, lubricant being supplied to the
spindle bearing from the cup or reservoir by suitable holes or passages provided for
that purpose. My Invention consists in an improved. arrangement hereinafter
described for preventing escape of oil, or lifting of the spindle out of the bolster
when the bobbin is removed for piecing or doffing; and also in the general con-
struction and arrangement of the apparatus, substantially as shewn in the
accompanying sectional Drawing, wherein a is the bolster containing the top and
bottom spindle bearings b, c, and formed at its lower end with an annular
chamber e, which rests upon the upper side of the bolster rail fand answers as a
reservoir for oil. The bottom end g of the bolster is threaded and provided with a
screw nut h, and is passed through a hole in the rail f to which it is secured, the
lower side of the oil reservoir e answering as a shoulder, so that it may be screwed
tightly against the rail by means of the nut beneath. That portion of the
interior of the bolster which is below the upper bearing is bored out slightly
larger than the diameter of the spindle d, and is rifled or formed with a spiral
groove i for the purpose hereinafter mentioned, the foot of the spindle fitting into a
smaller hole forming the foot-step or lower bearing. One or more holes & drilled
through the bolster conduct the oil from the reservoir to the foot of the spindle,
whence by the rotation of the spindle the oil will be carried through the spiral
groove i to the top of the bolster, over which it will flow again finding its way
down the outside of the bolster to the reservoir below.
The spindle d extends above the bolster about one third of its length, and upon
it is mounted a sleeve or shell of metal secured to the spindle immediately above
the bolster and extending downwards outside the bolster, until its lower end m

page_text: reaches the interior of the oil reservoir; I form this sleeve l with a flange n within
the oil reservoir, and_in_combination with this flange I employ an annular cover o,
which is secured to the oil reservoir by screw threading or any other suitable-
means, by which an oil-tight-joint-between the two may be effected, and the lip o'
-of-which-overlaps the flangen in such nanner as to prevent the spindle from being
-lifted-out-of-the-bolster_when_the_bobbin is removed for the operation of piecing
or doffing, thus superseding the use of hooked pins, springs, set screws, and other
devices-heretofore-usually-employed.--I-have-shewn the cover o screwed down to a
shoulder formed on the outside of the oil reservoir e, a washer of leather q being
interposed between the shoulder and the lower edge of the cover. By the arrange-
ment above described the tendency to heat which is found in the bolsters of this
class of spindle is prevented; and the peculiar construction of the sleeve and cover
prevents the oil from being thrown out; at the same time the reservoir of oil will
contain a supply for a longer period, and the cleaning out and renewal of oil is
effected more readily and with greater facility than heretofore. The warve p is
placed a little above the oil reservoir, and on the upper side of the warve a metal
cup may be provided for receiving the lower end of the bobbin, as shewn, the upper
end of the bobbin being fitted to the spindle in the usual manner; or the cup may
be dispensed with and the arrangement for supporting the bobbin described in the
Specification of Letters Patent No. 2872 granted to me on the 18th day of July,
A.D. 1878, may be employed.
Having now described and ascertained the nature of my said Invention and the
manner in which the same is to be performed, I desire it to be understood that
what I consider to be novel and original, and therefore claim as of my Invention is,
the combination of parts constituting the improved spindle apparatus, constructed,
arranged, and operating, substantially as hereinabove described with reference to
the accompanying Sheet of Drawings.
I also claim the use in combination with the sleeve or shell 7, flange n, and oil
reservoir e cf. the cover o, o¹, substantially as described and shown for the purposes
specified.
In witness whereof, I, the said Thomas Coulthard, have hereunto set my hand
and seal, this Twenty-first day of July, in the year of our Lord One
thousand eight hundred and seventy nine.
THOMAS COULTHARD. (L.S.)