Improvements in or connected with Spindles for Spinning and Twisting Frames.
Year: 1897

page_text: Date of Application, 21st Sept., 1897-Accepted, 18th Dec., 1897.
COMPLETE SPECIFICATION.
Improvements in or connected with Spindles for Spinning and
Twisting Frames.
(A communication from abroad by JOHN KILBURN of Belmont, State of Massachusetts,
one of the United States of America, Engineer.)
I ALFRED GEORGE BROOKES of 55 & 56 Chancery Lane, in the County of London,
Chartered Patent Agent' 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 :-
"
As spindles of the "self centreing" or top" type are commonly constructed
that portion of the spindle below the whirl, or, in the sleeve whirl types, below the point
of connection of the whirl and spindle, usually termed the pintle of the spinrile, is
tapered toward its lower end, and the bolster, or tubular support in which such pintle
rotates, is commonly constructed with inclined interior walls fitted to the taper of the
spindle pintle.
It has been found in practice that as the lower end of the spindle pintle is worn
away by the usual wear of the spindle, or wears into its step, the tapered spindle
pintle falling in the bolster is brought more tightly in contact with the inclined inner
walls thereof, causing the spindle to bind, or rotate with increased friction in the
bolster.
The object of the present invention is to provide means controlled by the rotation
of the spindle, whereby an excess of friction between the bolster and spindle produces
a change in the relative longitudinal position of the step and bolster, which effects a
change in the position of the spindle in the holster to diminish such friction, said
bolster and step being thereafter retained in their adjusted position.
The present invention has for its further object to increase the durability and
efficiency of the devices forming the spindle support.
To the above end the present invention consists of the several devices and combinations
of devices hereinafter more fully set forth and claimed. Preferred forms of the
present invention are illustrated in the accompanying drawings in which,
Figure is a vertical section through a spindle support embodying the same,
showing the bobbin in section and the spindle and other parts in elevation.
Figure 2 is a side view of what I have herein termed the step pintle sleeve
showing the connection of the clutch members therewith.
Figure 3 is a reverse plan view of the upper clutch member.
Figure 4 is a plan view of the lower clutch member.
Figure 5 is a sectional elevation of the step pintle sleeve.
Figure 6 represents a vertical section through a spindle bearing (showing spindle
in elevation), also embodying the present invention modified however in details of
construction from the form illustrated in the previous figures.
Figure 7 is an elevation of lower end of bolster and clutch collar or sleeve as
shown in Figure 6, and
Figure 8 is a horizontal section through the clutch collar or sleeve as shown in
Figure 6

page_text: Similar letters and numerals of reference refer to similar parts throughout the
several views.
In the drawing A represents a spindle, shown as having a sleeve whirl B, and
the usual tapered pintle. a. C represents the bolster shown as surrounded with the
usual wicking or other elastic packing c. D represents the bolster case and E the
spindle rail.
All the above named parts, except as hereinafter specified may be of any usual or
convenient form, and are shown merely to illustrate a convenient and practical
application of the present invention.
In the form of my invention shown in Figures 1, 2, 3, 4 and 5 of the drawings the
pintle a of the spindle A rests upon the top of the step pintle 2 which forms the
step.
The upper portion of the step 2 is threaded and projects into an aperture 3 in the
base of the bolster C, said aperture being correspondingly threaded and registering
with the bore of the bolster.
It may be said in this connection that while the threads upon the step pintle 2
engage the threads in the aperture 3 with sufficient tightness to ensure the raising of
the step pintle 2 as hereinafter described, the fit is preferably made loose enough to
permit a slight wandering or gyrating movement to allow the spindle to centre itself
under an unbalanced load.
Below the bolster C, preferably resting upon the bottom of the bolster case D, is
what I have herein termed the step pintle sleeve 4, which loosely surrounds the step
pintle 2 and supports the bolster C. The pintle sleeve 4 is conveniently loosely fitted
to the bore of the bolster case D for ready removal or insertion and for the purposes
hereinafter described is held from rotation by means of the pin 5, driven through the
walls of the bolster case D and projecting into the bore thereof to engage a vertical
slot 6 in the step pintle sleeve 4.
Any other suitable means however may be provided to hold the step pintle sleeve
as above stated.
.
On the base of the bolster C are formed one or more downwardly projecting
teeth 7, which engage, but preferably do not bottom in, a series of notches 8 formed
in the top of the pintle sleeve 4. To prevent the bottoming of the teeth 7 in the
notches 8. I have in practice provided a series of projections or rests 9, upon the
top of the sleeve 4, and set in from the periphery of said sleeve, which norinally
support the bolster C, bearing on the base of the bolster C within the teeth 7, so
that they do not interfere with the rotation of the bolster C as hereinafter
described.
As shown in Figures 1, 2, 3, 4 and 5 of the drawing the teeth 7 are made inclined
upon one side and substantially perpendicular upon the other, and the notches 8 are
correspondingly shaped so that, while broadly speaking, the bolster is held from
rotation in either direction, it is positively so held in one direction, and in the
opposite direction, only so held until sufficient force is applied thereto to raise
the teeth 7 out of the notches 8.
The teeth 7 cooperating with the notches 8 upon the sleeve 4 form what I have
herein termed a clutch mechanism, which after the bolster C and step have been
adjusted as hereinafter described hold them in their adjusted position until sufficient
force is applied to effect a readjustment, a feature which I consider as broadly new as
applied to spindle supports adjusted as herein described and I desire to say that I do
not consider myself as limited to the particular forms of clutch herein before or
hereinafter shown and described as the same may be readily modified by one skilled
in the art without departure from the present invention.
As before stated the spindle pintle a rests upon a step which as shown is the top
of the step pintle 2, which is supported by its threaded connection with the bolster C,
- and is restrained from rotation by a pin 10 projected therefrom and engaging the
slot 6 in the sleeve 4.
The operation of the mechanism of Figures 1, 2, 3, 4 and 5 is as follows:-
When the lower end of the spindle pintle a has worn away or worn into its step

page_text: sufficiently to so far lower the spindle pintle in its inclined bearings as to cause it to
turn with too much friction, or bind therein, if the band which drives the spindle is
sufficiently tight, and sufficient power is applied thereto, the spindle and bolster will
rotate together and the teeth 7, being inclined in the direction of rotation of the
spindle will be raised out of the notches 8 and the step pintle 2 will be raised by
means of its threaded connection with the bolster C, and will raise the spindle A
which rests thereon until the friction developed between the spindle pintle a and
the bolster C is so far decreased that the bolster C will no longer turn therewith,
when the teeth 7 will fall into the next adjacent notches 8 and the bolster will be held
from further rotation until sufficient friction has been again developed by the wear
of parts to effect a rotation of the bolster with the spindle and produce a further
change in adjustment.
If the spindle band slips or does not have sufficient power to raise the teeth 7 out
of the notches 8 and to effect a rotation of the bolster C as above described, the
spindle A may be turned by hand until the above described adjustment has been
effected, and the teeth 7 have again dropped into the notches 8. When turned by
hand as above suggested the spindle is turned in the direction of its normal
rotation.
The modified form of my invention shown in Figures 6, 7 and 8 is described as
follows:-
A represents the spindle, a the spindle pintle, B the whirl, C the bolster, D the
bolster case, and E the spindle rail, as in the figures herein before described.
As shown in Figures 6, 7 and 8 the pintle a rests upon the upper end of a step
pintle F, the top of which forms the step, as in the last described construction. The
lower end of pintle F is conveniently polygonal in section, or of any convenient
shape other than round, and engages a correspondingly shaped aperture ƒ in the
base of the bolster case D, or the pintle F may be otherwise held from rotation by a
suitable and convenient means.
The upper portion f2 of the pintle F is threaded and engages correspondingly
threaded bearings f3 in the base of the bolster C, the arrangement being substantiaily
similar to that heretofore described in connection with the herein before described
figures.
Upon the base of the bolster C is formed the upper member of what I have
herein termed a clutch mechanism. As shown in the drawings the upper clutch
member d'consists of one or more V shaped downwardly projecting teeth formed
upon the base of the bolster c.
The lower clutch member d¹ consists of a series of notches corresponding in shape
to the teeth upon the upper clutch member d, and formed upon a collar or sleeve d²
surrounding the pintle F. In this construction the bolster c is not positively held
from rotation in either direction, but may be rotated in either direction when
sufficient power is applied thereto to turn the teeth on the upper clutch inember out
of the notches in the lower clutch member. I desire to say in this connection that
while I find the last described form of the notches and teeth on the clutch members
convenient for some purposes I consider the form thereof shown in Figures 1, 2, 3, 4
and 5 preferable for most uses, since by positively holding the bolster from a reverse
rotation it prevents the danger of binding and damaging the spindle and bearing
should the rotation be reversed by an accidental crossing of the band.
I desire to say that if required, as for example for twisting, the spindle shown in
the figures first herein described may be safely reversed in rotation, in which case
when too much friction is developed it may be adjusted by turning by hand as before
described but in a direction reverse to its direction of rotation.
The sleeve or collar d² is free to reciprocate along the pintle F, but is held from
rotation thereon, preferably by a pin which is projected from the pintle F, and
engages a vertical slot d³ in the collar or sleeve d².
The collar or sleeve d² is supported upon the pintle F by a suitably placed spring,
conveniently by the coiled spring e, which surrounds the pintle F, bearing at one end
against the sleeve d² and at the other end against the threaded washer or nut f³ on

page_text: said pintle F. The nut or washer f5 is interiorly threaded and engages the threaded
portion of the pintle F, so that by a rotation of the pintle F or of the nut f
thereon, the nut may be moved longitudinally along the pintle F to increase or
diminish the tension of spring e as hereinafter described.
To provide for a limited gyrating or wabbling movement of the bolster to allow
the spindle to find its true centre of rotation under an unbalanced load, as auxiliary
to the loose threaded connection herein before described, I prefer to provide a rocker
washer h which is interposed between the sleeve d² and base of the bolster C, which
may conveniently be provided with the recesses h¹ and h² to receive said washer.
The washer is of such thickness that while it permits the notches upon clutch
member to engage the teeth upon the upper clutch member d, it so far separates
said members that said teeth do not firmly bottom in said notches, and since the
threaded portion f3 of the bolster C is loosely engaged by the threaded portion f2 of
the pintle F, the bolster C is left free to gyrate to allow the spindle to centre itself
under an unbalanced load.
The operation of my invention in the form shown in Figures 6, 7 and 8 of the
drawings is described as follows :-
The compression of the spring e is first adjusted to give the desired amount of
resistance to the rotation of the bolster for the purposes hereinafter described by
means of the nut or washer f, and the holster C and F and its attached devices are
then dropped into the bolster case D, the lower portion of the pintle F engaging
recess in the case.
When the spindle pintle has worn away or worn into the step, and the spindle
rotates with increased friction, as soon as the effort to rotate the bolster C produced
by said friction is capable of further compressing the spring e, by means of the
inclined teeth in the clutch members, the clutch member d will turn over the clutch
member d¹ and will allow the bolster C to rotate, and by means of its threaded
connection with the pintle F to travel down upon said pintle, and to fall on the
spindle until the friction developed by its rotation in insufficient to produce a further
rotation of the bolster C. at which time the spring e will engage the clutch members d
and d¹ to hold the bolster in its adjusted position.
It will be noted in this connection that in the present construction as distinguished
from the construction heretofore described the operation of the clutch members d and d¹
is not effected by the weight of bolster C or supported parts, but depends entirely
upon the amount of the force exerted by the spring e so that by adjusting the tension
of the spring e as before described the amount of friction developed by the
rotation of the spindle before a rotation or partial rotation of the bolster will occur to
decrease such friction may be regulated as desired, a feature which I consider of the
very greatest importance in the art.
When the clutch members are provided with V shaped teeth as, shown, the bolster
may have either a left or right hand rotation so that the device may be adjusted to
receive a new spindle without removal from the case.
Having thus described my invention and its mode of operation, I desire to say
that I do not consider the same as limited to the details of mechanism herein shown
and described, but I claim as novel and desire to secure by Letters Patent.
1. The combination with a spindle, its bolster
increase of the friction developed between the
adjust the relative longitudinal position of the
independent of the adjusting means to retain the
position, substantially as described.
and step, of means actuated by an
spindle and its bolster, acting to
bolster and step, and mechanism
bolster and step in their adjusted
2. The combination with a spindle, its bolster and step, of automatic means for
changing the relative longitudinal position of the bolster and step, and mechanism
independent of the adjusting means controlled by the weight of supported parts for
retaining the bolster and its step in their adjusted position, substantially as
described.
3. The combination with a spindle, its bolster and step, of mean's for holding the

page_text: bolster in a substantially fixed longitudinal position, and connections between the
bolster and step whereby a rotation of the bolster while held in its substantially
fixed longitudinal position effects a longitudinal movement of the step along the
bolster, substantially as described.
4. The combination with the bolster and its support, of means to restrain the
bolster support from rotation, and interlocking connections between the bolster and
its support, arranged to permit a rotation of the bolster in one direction when
sufficient force is applied thereto, and to restrain the bolster from rotation in an
opposite direction, substantially as described.
5. The combination with the bolster, of a clutch mechanism arranged to permit a
rotation of the bolster in one direction when sufficient force is applied thereto, and to
restrain the bolster from rotation in an opposite direction, substantially as described:
6. The combination with a bolster, of a threaded bearing formed in the base of
the bolster, a threaded step pintle engaging said bearing, a pintle sleeve below the
bolster, in which said step pintle is free to reciprocate, and means for restraining
said step pintle from rotation, substantially as described.
7. The combination with a bolster and its support, of a threaded pintle engaging
the bolster and free to reciprocate in the bolster support, and means to restrain the
pintle and support from rotation, substantially as described.
8. The combination with a bolster, of an inclined bearing therefor, arranged to
permit the rotation of the bolster in one direction when sufficient force is applied
thereto, and to restrain it from rotation in the opposite direction, substantially as
described.
9. The combination with a spindle, the bolster and step, of means actuated by an
increase of friction developed between the spindle and its bolster, acting to adjust
the relative longitudinal position of the bolster and step, and means for regulating
the amount of friction required to effect such adjustment, substantially as described.
10. The combination with a spindle, its bolster and step, of means actuated by an
increase of friction developed between the spindle and its bolster, acting to adjust
the relative longitudinal position of the bolster and step, mechanism for retaining
the bolster and step in their adjusted position, and means for regulating the amount
of friction required to effect such adjustment, substantially as described.
11. The combination with a spindle, its bolster and step, of a pintle upon which
the step is formed and a spring supported sleeve upon said pintle, engaging the
bolster to control its rotation, substantially as described.
12. The combination with a spindle, its bolster and step, a loose threaded con-
nection between the bolster and step, spring controlled means for controlling the
rotation of the bolster, arranged to retain it after such rotation, in its adjusted
position, substantially as described.
13. The combination with a spindle, its bolster and step, means for adjusting the
relative longitudinal position of the bolster and step, a spring arranged to control said
adjustment, and means for retaining the bolster and step in their adjusted position,
substantially as described.
14. The combination with a spindle, its bolster and step, mechanism for adjusting
the relative longitudinal position of the bolster and step, a spring controlling said
mechanism, and means for adjusting the tension of said spring, substantially as
described.
15. The combination with a spindle, its bolster and step, a pintle upon which is
formed the step, means to restrain said pintle from rotation, a spring controlled
clutch member movable along the pintle and engaging the bolster, and a threaded
connection between the bolster and step, substantially as described.
16. The combination with a spindle, its bolster, and means for controlling the
rotation of the bolster, of a pintle upon which is formed the step, and which supports
the bolster and the means for controlling the rotation of the bolster, substantially as
described.
17. The combination with a bolster, of a clutch member carried thereby having an

page_text: inclined projection, a spring controlled clutch member provided with notches
arranged to be engaged by said projection, substantially as described.
18. The combination with a holster, of a sliding clutch member controlling the
rotation of the bolster, and a spring supporting said clutch member, substantially
as described.
19. The combination with a bolster, and its case, of a threaded bearing in the
base of the bolster, a threaded step pintle loosely engaging said bearing, a recess in
the bottom of the bolster case engaged by the lower portion of said pintle, and acting
to restrain it from rotation, substantially as described.
Thated the 21st day of September 1897.
WM. BROOKES & SON
55 & 56 Chancery Lane London Agents for the Applicant.