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Патент USA US3038689

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'June 12, 1962
J- T PQSPISZEL
'
3,038,679
SPINDLE WITH AUTOMATIC LOCKING MEANS
Filed April 10, 1961
INVEN
(Ml/0% 22/2/9266
United States Patent
rice
1
3,038,679
Joseph T. Pospiszel, North Broadalbin, N.Y., assiguor
SPINDLE WITH AUTOMATIC LOCKING MEANS
to Mohasco Industries, Inc., Amsterdam, N.Y., a cor
poration of New York
Filed Apr. 10, 1961, Ser. No. 101,857
3 Claims. (Cl. 242—-68.2)
3,@38,679
Patented June 12, 1962
2
FIG. 6 is an end view of one of the bearing blocks.
The winding machine shown in FIG. 1 is of conventional
construction and it includes a main shaft mounted in
bearings within a housing 10 and having a driving pulley
11 mounted on a part of the shaft projecting out of the
housing. The pulley is driven through a belt 12 by a
motor not shown. A spindle 13 is attached to the other
end of the shaft to be driven thereby and, in the operation
This invention relates to rotary spindles employed in
of the machine, a core 14 of paperboard or other similar
winding and like machines for supporting a core during 10 material is slipped over the spindle to have yarn wound
the winding of yarn thereon to form a package. More
thereon. The yarn is distributed along the core to form
particularly, the invention is concerned with a rotary
the package by a traverse guide 15 of conventional con~
spindle which is provided with novel locking means op
struction and mode of operation.
erating automatically to prevent rotational slippage of the
The spindle of the invention comprises a steel rod 16 of
core on the spindle during the winding operation, regard 15 cylindrical form, which is provided with a longitudinal
less of the direction of rotation of the core.
recess 17 extending inward from its peripheral surface.
In the winding of yarn upon a core to form a package,
The recess has a ?at bottom surface 18 and parallel side
slippage of the core relative to the spindle causes varia
tions in the twist of the yarn and such variations result
walls 19 extending outwardly therefrom. Inward from
the ends of the recess, the outer edges of the side walls are
in imperfections in the fabric, in which the yarn is used. 20 cut away to form outwardly divergent walls 20.
In the case of yarns used for the pile of carpets and rugs,
A ‘bearing block 21 is mounted within the recess at each
end thereof between the parallel Walls 19 and rests upon
a non-metallic gasket 22. Each block has an opening 23
at one end for receiving the pivot of a locking member and
page of a core on the spindle, it is customary to provide 25 the block is held in place by a screw 24, which passes
the spindle with projecting longitudinal ribs near its inner
through an opening 25 through the block and is threaded
variations in the twist of the yarns frequently produce
objectionable streaks in the pile su?icient to cause the
goods to be down-graded. In order to prevent the slip
end and to form its outer end with a threaded longitudinal
into a bore 26 leading from the bottom of the recess. The
bore and a diametrical slot extending inward from the
blocks are installed with their bearing openings opposed.
end.
After a core is mounted on such a spindle, a screw
A locking member 27 is mounted in the recess between
with a conical head is threaded into the bore so that the 30 the bearing blocks and the member has pivots 28 at its
head of the screw will expand the split end of the spindle
into tight contact with the core. While such a spindle
will hold a core against slippage if the screw is tightened
opposite ends which are receivable in the openings 23 in
the blocks. The locking member has a flat top 29 and
outwardly divergent sides 30, the lower edges of which are
su?iciently, it is necessary to remove the screw when a
connected by a curved surface 31 concentric with the
full package of yarn is to be do?ed and the screw must 35 pivots 28. Along its sides, the top is cut away to form
be replaced after an empty core has been placed on the
outwardly convergent surfaces 32, which meet the sides 30
spindle. The operations described slow up the dotting
in longitudinal edges 33.
operation and slippage of the core on the spindle some
The locking member 27 is so formed that, when the
times occurs because the screw was not tightened sul?
spindle is at rest with the side walls 19 of the recess 17
ciently.
The present invention is, accordingly, directed to the
40 lying vertical and the locking member centered in the
provision of a spindle for use in winding and like ma
recess, the longitudinal edges 33 of the member project
equally beyond the outline of the rod 16. The pivots 28
chines, which is provided with novel locking means operat
ing automatically upon rotation of the spindle in either
lie closer to the ?at top surface 29 of the member than to
the curved bottom surface 31 and the preponderance of
direction to grip a core thereon and hold the core against 45 the mass of the member lies inward from a plane, which
slippage. The locking means is actuated by initial slip
page of the core and its locking effect increases with an
increase in spindle speed. In addition, it is quickly made
ineffective upon stoppage of the spindle and does not
interfere with the dof?ng of a full yarn package or the
donning of a new core. These operations thus consume
contains the axis of rotation of the member, that is, the
common axis of its pivots, and lies inward from and paral
lel to the plane containing the longitudinal edges 33 of
the member.
In the use of the new spindle, a core can be easily I
little time and the use of the new spindle not only im
telescoped over the spindle, since the longitudinal edges
33 of the locking member do not project sufficiently be
proves the quality of the Wound yarn by the eliminatiom
of twist variations but also increases the machine output
scoping action. The edges indent the inner surface of
by reducing the time required for do?ing and donning.
For a better understanding of the invention, reference
may be made to the accompanying drawing, in which
yond the outline of the rod 16 to interfere with the tele
the core slightly and, as a result, any slippage of the core
causes the locking member to be rocked on its pivots so as
to increase the projection of one of the edges. Thus, when
the spindle is rotating clockwise, a slight slippage of the
tional winding machine equipped with the new spindle;
core will cause the locking member to move counterclock
[FIG. 2 is an exploded view, partly in elevation and 60 wise on the axis of its pivots and the longitudinal edge 33
of the member, which is at the right side of the member
partly in longitudinal section, of the locking mechanism
as seen in FIG. 4 will be forced more deeply into the inner
of the spindle;
surface of the core and prevent its slipping further. Also,
FIG. 3 is a cross-sectional view of a spindle with the
as soon as the locking member is off center, centrifugal
new locking means in inoperative position;
65
FIG. 1 is a fragmentary view in elevation of a conven
force tends to continue its movement and thus increase the
FIG. 4 is a cross-sectional View of a spindle with the
new locking means and a core in place on the spindle,
locking action.
the locking means being shown in effective position during
clockwise rotation of the spindle;
FIG. 5 causes the locking member to move clockwise so
When the spindle is rotated counter
clockwise, slippage of the core on the spindle as shown in
that its left hand edge 33 is projected farther beyond the
FIG. 5 is a View similar to FIG. 4 with the locking 70 outline of the rod 16 and becomes more deeply imbedded
means shown in effective position during counterclock
in the inner surface of the core. Again, centrifugal force
wise rotation of the spindle; and
assists in the locking action.
3,038,679
4
3
After the winding operation is completed, the full pack
a yarn package is being wound thereon, which comprises
age of yarn can be easily removed from the spindle and,
for this purpose, the package is given a slight angular
its peripheral surface and a locking member pivotally
movement on the spindle in the direction on which the
spindle was rotated during the formation of the package.
Such movement of the package causes the locking member
a rod having a longitudinal recess extending inward from
supported Within the recess at the ends thereof for rota
tion on an axis parallel to the axis of the rod and out
wardly offset from the axis of the rod, the member hav
ing longitudinal edges at opposite sides of its upper end,
the member, its longitudinal edges 33 engage the inner
which project outwardly beyond the circumferential out
surface of the core with so light a pressure that no di?‘i
line of the rod, said member being swingable about its
culty is encountered in slipping the package and core olf 10 pivots during the rotation of the spindle in either direction
to become centered in the recess and, in that position of
the spindle. The mounting of a new core on the spindle
can be performed without di?iculty, since the engagement
of the core with the edges of the locking member tend to
to increase the projection of one of its edges beyond the
circumferential outline of the rod, to thereby grip a core
placed over the rod when the spindle is rotated in either
cause the member to center itself in the recess, so that its
direction.
edges in contact with the core offer little resistance to the 15
2. The spindle of claim 1, including bearing blocks hav
ing openings in their opposed faces removably mounted
telescoping of the core of the spindle.
The do?ing and donning of the spindle may thus be
carried on quickly and with no difficulty, whereas, with
the conventional spindle construction, the removal of the
expander screw from the split end of the spindle consumes
an appreciable amount of time as does the threading of
the screw into the spindle after a new core has been placed
within the recess at its ends and in which the locking
member has pivot pins at its ends entering the openings.
3. The spindle of claim 1, in which the preponderance
of the mass of the member lies between two parallel
planes, one of which passes through the axis of rotation
of the member, the other of which is tangent to the rod at
in position. Also, With the spindle of the application, the
the point diametrically opposite the axis of rotation of
locking of the core is automatic and the locking member
the member, respectively.
increases in effectiveness with an increase in spindle speed, 25
which tends to produce greater package slippage. With
References Cited in the ?le of this patent
the prior spindle, the package is held in place only by the
expansion of the split end of the spindle and, if the
UNITED STATES PATENTS
expander screw is not threaded fully into place, the ex
2,400,585
Wolff ________________ __ May 21, 1946
pansion of the end of the spindle is ineffective to prevent
2,416,785
Welch _______________ .._ Mar. 4, 1947
slippage.
I claim:
1. A rotary spindle for supporting a tubular core while
FOREIGN PATENTS
139,15-1
Sweden _____________ __ Feb. 17, 1953
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