Improvements in the Construction of Combined Step and Bolster Bearings for the Spindles of Spinning and Doubling Machines.
Year: 1891

page_text: Date of Application, 3rd Oct., 1891
Complete Specification Left, 2nd July, 1892-Accepted, 20th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Combined Step and Bolster
Bearings for the Spindles of Spinning and Doubling Machines.
We, EDMUND TWEEDALE, SAMUEL TWEEDALE, and JOSEPH SMALLEY,
Machine Makers, Globe Works, Castleton, Manchester, do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in the construction of the bolster tubes of
self contained spindles, such as are described in Letters Patent granted to Samuel
Tweedale in the year 1888, and numbered 14,000. The object of this invention
is to improve the method of attaching the spring marked 3 in the above named
Specification to the side of the bolster tube.
In carrying out our invention, we cut two holes lengthwise in that part of the
bolster tube where the spring is fixed, the distance between the edges of these holes
being made slightly less than the length of the spring, so that to place the spring
in position it has to be bent until the ends enter the holes, when on its being
released it assumes the position required.
The ends of the spring are made suitable for the holes in the bolster tube, and
the centre part is made to suit the groove in the bolster carrier.
Dated this 2nd day of October 1891.
SAMUEL TWEEDALE.
EDMUND TWEEDALE.
J. SMALLEY.
COMPLETE SPECIFICATION.
Improvements in the Construction of Combined Step and Bolster
Bearings for the Spindles of Spinning and Doubling Machines.
We, EDMUND TWEEDALE, SAMUEL TWEEDALE, and JOSEPH SMALLEY,
of Globe Works, Castleton, near Manchester, in the County of Lancaster, Machine
Makers, do hereby declare the nature of this invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
This invention relates to improvements in the construction of the bolster tubes of
self contained spindles, such as are described in Letters Patent granted to Samuel
Tweedale in the year 1888, and numbered 14,000. The object of the present
invention is to improve the method of attaching the spring marked 3 in the above
named Specification to the side of the bolster tube.
In carrying out our invention, we form undercut holes opposite each other in
that part of the bolster tube where the spring is fixed, the distance between the
edges of these holes being made slightly less than the length of the spring, so that
to place the spring in position, it has to be bent until the ends enter the holes,
when on its being released it assumes the position required.
Such being the nature and object of our said invention the following is a complete
description of same, reference being had to the accompanying drawings in
which:-
Fig. 1 is front elevation partly in section of our improved construction of
combined step and bolster bearings for spindles..
Fig. 2 is elevation of the bolster tube and spring.
Fig. 3 is a sectional elevation of part of bolster tube, and bolster carrier drawn
to enlarged scale, and Fig. 4 is plan of same.

page_text: "
The bolster tube is represented at 2 lying within the bolster carrier 6 in the
ordinary manner. On one side of the upper portion of the bolster tube, we form a
flattened surface and undercut openings shewn at 1, into which are inserted the free
ends of a bow spring 3 which after once being inserted cannot of itself fall away or
become detached. This bow spring is free to move endwise in both directions,
according as more or less pressure is put upon the said spring, and it is arranged
to project some little distance beyond the outer circumference of the bolster tube,
so as to enter one of the vertical grooves 9 formed within the bolster carrier 6,
which groove will prevent the bolster tube from turning around within the bolster
carrier.
By the use of the undercut openings in the bolster tube for receiving the free
ends of the spring 3, we dispense with rivetting, at the same time the removal of
the spring is facilitated, and although we prefer to use one spring, more may be
used if thought desirable.
The holes 12 in the bolster tube, are made for the passage of oil to lubricate the
parts.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
In bolster tubes, the formation of undercut openings 1, for receiving the free
ends of a bow spring 3, in manner substantially as herein shewn and described.
Dated this 1st day of July 1892
EDMUND TWEEDALE.
SAMUEL TWEEDALE.
JOSEPH SMALLEY.
EDMUND TWEEDALE.
SAMUEL TWEEDALE.
JOSEPH SMALLEY.