Improvements in Supports or Bearings for Spindles in Spinning Machinery.
Year: 1888

page_text: Date of Application (in United Kingdom), 14th July, 1888
Complete Specification Left, 14th July, 1888
Complete Specification Accepted, 23rd Mar., 1889
COMPLETE SPECIFICATION.
.
Improvements in Supports or Bearings for Spindles in Spinning
Machinery.
We WILLIAM FRANKLIN DRAPER and GEORGE ALBERT DRAPER, Manufacturers of
Spinning Machinery and residing at Hopedale in the county of Worcester, and State
of Massachusetts in the United States of America 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 in supports for spinning-spindles relates to :-
A spindle-bearing containing the following instrumentalities, viz. a bolster
tapered externally, a surrounding internally-tapered support for the bolster, into
which the holster is fitted loosely, and a step and means to adjust the said bolster
vertically with relation to the said support to thus increase or decrease the extent of
looseness between the said parts, and means to restrain the loose bolster from rotation
in the said support, substantially as hereinafter described.
A bolster-support and bolster placed therein loosely, and a step-rest, combined with
an intermediate connection, substantially as hereinafter described, between the said
bolster and step-rest, whereby the bolster may be adjusted longitudinally within its
support and with relation to the said step rest, as and for the purposes hereinafter set
forth.
A surrounding support having a tapering interior, a bolster having a tapering
exterior and a tapering interior and placed in the bolster-support loosely, a spindle
supported in the said bolster; and a step rest, combined with a connecting device,.
substantially as hereinafter described, whereby the bolster may be adjusted longitu-
dinally with relation to the step-rest, and with means to restrain the rotation of the
bolster in the surrounding support, for the purposes hereinafter sot forth:

page_text: A surrounding support having a tapering interior, a bolster having a tapering
exterior and a tapering interior and placed in the bolster-support loosely, a spindle
supported in the said bolster, and a step-rest, combined with a connecting device,
substantially as hereinafter described, whereby the bolster may be adjusted longitu-
dinally with relation to the step-rest, and with means for restraining the rotation of
both the holster and the step-rest in or with relation to the surrounding support.
In a spindle-bearing, a bolster tapered externally, a surrounding support tapered
internally, and an adjustable step to sustain the weight of the spindle, combined with
pins or projections to restrain the rotation of not only the step, but also the bolster
within the bolster support, as and for the purposes hereinafter set forth.
In an application for Letters Patent of the United States made by us (for which
Letters Patent of the United States have since been granted to us dated March 6 1888
No. 378,877) we have shown and described a spindle having a tapering pintle
which fits a tapering bolster, the said bolster being connected in an adjustable
manner with a step, the connection being such as to permit the bolster to be moved
vertically or longitudinally with relation to the step in the surrounding bolster
support, both the bolster and step being restrained from rotation, such adjustment of
the parts enabling any wear between the pintle of the spindle and the interior of the
holster to be compensated for, and enabling a proper running fit to be maintained
between the said parts.
It is essential for the best results in spinning that the bolster be so held or
suspended in or with relation to its surrounding support that the bolster may
move or vibrate and follow the vibrations of the lower end of the spindle, and the
proper amount of looseness having been determined upon for the particular spindle, it
is a desideratum to be able to keep the said looseness substantially the same, and it is
also a desideratum to be enabled to adjust the bolster so as to vary the amount of
looseness according to the requirements of the spindle. To do this we have tapered
the exterior of the bolster and the interior of the surrounding support for it, and have
adjustably attached to the said bolster a step, the rotation of the step with relation to
the bolster enabling the bolster to be raised or lowered within its outside support, thus
varying the looseness according to the demands of the spindle. In the conical space
between the bolster and its support we may, if desired, use packing, or the bolster and
support may come in contact in the presence of oil or air. For the more perfect
results we have shown the interior of the holster as tapered, and have tapered the
pintle or lower end of the spindle as in our said application, or, if desired, as is herein
also shown, the pintle or lower end of the spindle may be cylindrical, and the interior.
of the bolster for a portion of its length may have a cylindrical bore, and, if desired,
the lower end of the spindle may be run upon a step cither separable from the
bolster or made as an integral part of it.
DESCRIPTION OF THE DRAWINGS.
Figure 1 in vertical section shows a spindle-bearing embodying our invention, the
said figure showing also the spindle rail and in elevation the spindle. Figure 2 is
a top or plan view of a part of the bearing with the spindle removed; Figure 3, a
section looking down below the line ax, the rail being, however, omitted. Figure 4
is yet another view showing our invention in its simplest form, but part of the spindle
being shown. Figure 5 is a modification of our invention.
The surrounding support A for the bolster is herein shown as a detachable block or
standard erected upon the usual rail, C; but instead of the particular support shown
we may employ any other usual or suitable support to surround the bolster and
support it loosely in proper working position. The nut B, the spindle D, having a
sleeve-whirl, D, and the hook or stop E, are and may be all as usual.
Referring first to the simpler form of our invention in Fig. 4, it will be seen that
the bolster c is bored cylindrically to receive the lower end or pintle, a, of the spindle ;
but it will also be observed that the exterior of the bolster is tapered, and that

page_text: the interior of the support A is also correspondingly tapered, so as to present
substantially parallel surfaces. The lower end of the spindle, or the portion a, as
represented in Fig. 4, rests upon the upper end of a step, 61, shown as a screw
rising from a step-seat, a², both of which, as shown, are grooved longitudinally
for the reception of a restraining pin or stud, as a³.
Referring now to Fig. 1, it will be seen that the exterior of the bolster is
tapered and that the interior of the surrounding support A is also tapered, sub-
stantially as in Fig. 4; but, in addition, the interior of the bolster is tapered to
receive the lower end of the spindle, it being correspondingly tapered.
In Fig. 1 the lower end of the spindle rests upon a step, b', connected in an
adjustable manner with a step-rest, a².
In Figs. 1 and 5 the bolster near its upper end has a projection, as 2, which enters
one or the other of a series of slots, 3, made in the surrounding support A, or it may
be just the reverse of this, the said slot and projection constituting means for pre-
venting rotation of the bolster in the bolster-case with the spindle, such rotation of
the bolster being very injurious, if not absolutely destroying the utility of the
bearing.
In Fig. 5 we have shown yet another modification, in which the lower end of the
bolster has screwed or attached fixedly to it a screw or equivalent stud, which enters
and is made adjustable longitudinally in the step-rest a³, the lower end of the spindle
fitting the solid bottom of the bolster.
In Fig. 1 we have shown the externally-tapered bolster as surrounded by an elastic
packing, p, introduced between the bolster and support A; but in Fig. 4 we have
omitted the packing, letting the exterior of the bolster come in contact with the
interior of the support A, separated only by a film of oil or air, the differences in
diameter between the exterior of the bolster and the opening at the interior of the
support being in practice found effective when as little as one one-hundredth of an inch,
that amount of looseness effectually doing away with the jar due to gyration.
In Fig. 1 the bolster and step-rest are connected by a single piece, shown as having
threaded portions of two diameters, one of the threaded portions being screwed into
the step-rest, while the other has screwed upon it the lower end of the bolster.
By rotating the bolster with relation to the step-rest, which rests upon or is
supported by or through the bottom of the chamber left in the support A, the height
or distance of the upper end of the bolster with relation to the lower end of the
step-rest may be varied in such manner as to vary the width of the space between the
exterior of the bolster and the interior of its surrounding support, thus controlling
and determining the extent of looseness of the bolster within its surrounding
support.
To provide for yet further adjustments (for substantially such adjustments as
provided for in our application serial No. 246994) the bolster may be rotated more or
less upon or with relation to the step, or the upper end of the connecting device b¹,
interposed between the bolster and the step-rest, until the contact between the tapering
exterior of the spindle and the tapering interior of the bolster is uniform, and there-
after, as the spindle and bolster become worn by use, the said bolster may be again
turned to move it longitudinally with relation to the step, thus compensating for any
wear and maintaining the normal fit between the spindle and bolster. When making
these adjustments, the bolster will be raised from its surrounding support sufficiently
to disengage the projection 2 from the slot 3, the connection between the step-rest
and surrounding support being such as to permit, if desired, the removal of the entire
bolster and its attached parts.
The bolster will have suitable holes or passages for oil.
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:
1. A spindle-bearing containing the following instrumentalities, viz.: a bolster
tapered externally, a surrounding internally-tapered support for the bolster, into

page_text: which the bolster is fitted loosely, and a step and means to adjust the said bolster
vertically with relation to the said support to thus increase or decrease the extent of
looseness between the said parts, and means to restrain the loose holster from rotation
in the said support, substantially as described.
2. A bolster-support and bolster placed therein loosely, and a step-rest, combined
with an intermediate connection, substantially as described, hetween the said bolster
and step-rest, whereby the bolster may be adjusted longitudinally within its support
and with relation to the said step-rest, as and for the purposes set forth.
3. A surrounding support having a tapering interior, a bolster having a tapering
exterior and a tapering interior and placed in the bolster-support loosely, a spindle
supported in the said bolster, and a step-rest, combined with a connecting device,
substantially as described, whereby the bolster may be adjusted longitudinally with
relation to the step-rest, and with means to restrain the rotation of the bolster in its
surrounding support, for the purposes set forth.
4. A surrounding support having a tapering interior, a bolster having a tapering
exterior and a tapering interior and placed in the bolster support loosely, a spindle
supported in the said bolster, and a step-rest, combined with a connecting device,
substantially as described, whereby the bolster may be adjusted longitudinally with
relation to the step-rest, and with means for restraining the rotation of both the
bolster and the step-rest in or with relation to the surrounding support.
5 In a spindle-bearing, a bolster tapered externally, a surrounding support tapered
internally, and an adjustable step to sustain the weight of the spindle, combined with
pins or projections to restrain the rotation of not only the step, but also the bolster
within the bolster-support, as and for the purposes set forth.