Improved Bobbin Support for Spinning Mules and the like.
Year: 1893

page_text: Date of Application, 31st Jan., 1893-Accepted, 4th Mar., 1898
COMPLETE SPECIFICATION.
Improved Bobbin Support for Spinning Mules and the like.
I, THOMAS CLArk Dill, of 2632, Maschor Street, in the City of Philadelphia,
State of Pennsylvania, United States of America, Machinist, do hereby declare
the nature of the said invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement :—
My invention relates to the spool carrying mechanism of a spinning mule and
the object of my invention is to relieve the driving drum from the full weight of
the spool, thus preventing to a great extent the breaking of the yarn owing to the
packing of the strands upon the spool.
This object I attain in the following manner, reference being had to the accom-
panying drawings in which ;--
Fig. 1, represents a side view of sufficient of a spinning mule to illustrate my
invention, the spinning mule shown being of the ordinary construction now in
common 166.
Fig. 2, represents a partial elevation of the same.
Fig. 3, represents a perspective view of my attachment; and,
Fig. 4, represents a diagram view showing the support in the two extreme
positions.
Spinning mules as now constructed are so arranged that the full weight of the
spool and that of the yarn or slubbing upon it are supported entirely by the driving
drum by which motion is imparted to the spool to unwind the yarn therefrom.
Consequently, as the spool is very long and has a large number of ends of yarn
upon it, this weight so embeds one strand of yarn upon another as to compact it,
and when the feeding rolls draw off the slubbing from the spool they not only have
to carry the yarn which is very light but also have to pull it away from the yarn
upon the spool in which it is embedded consequently the yarn often breaks between
these two points necessitating the constant attention of the operator.
I have found that the weight of the spool is a great deal more than is required
to drive it and that if the drum be relieved of this extra weight the spool will not
be compacted with its strands embedded as aforesaid.
Referring to the drawings; A, is the frame of the mule, B, is the drum driven
from the shaft B¹, through the gear wheel b, pinion 6¹, and intermediate wheel &.
The drums B, are arranged in sections throughout the entire length of the mule
and support the spools D, said spools having heads d, which overhaug each side of
the drums B, the drums being in contact with the yarn as shown in Figs. 1 and 2.
The spools have trunnions d', which rest against the bracket or standard O, curved
in the manner shown, the bracket being at the rear of the centre of the drum so
that the tendency of the spool is to rest against the standard in position to resist
any tendency to roll off from the drum.
This is the ordinary method of mounting spools upon spinning drums, the whole
weight of the spool being supported by the drums. I, however, arrange at intervals
at the rear of the mule adjustable standards E, supported preferably by adjustablo
brackets E, adapted to the rear of the frame A. Each of these upright frames or
standards E, carries a lever G, curved as shown in the drawings, and the long
arm g, of cach lever passes under the trunnion d', of the spool and is so shaped as
to form with the standard C, a V-bearing for the spool. The short arm g', of the
lever has a pin g³, to which is adapted a link h, which in turn is adapted to a
spring H, adjustably scoured to a bracket e, on the standard E. The spring H,
has a screw threaded extension h', to which is adapted the thumb nut A³, by which
the tension of the spring is regulated.
Thus, it will be seen on referring to the diagram, that when the spool is full and
rests in the position shown by full lines in the diagram Fig. 4, the leverage is

page_text: increased and consequently the spring will support a heavier spool than when the
lever is in the position shown by dotted lines, and this leverage gradually decreases
-as the yarn is drawn off from the spoole, until the spool is empty, when it is in the
position shown by dotted lines in Fig. 4, and consequently the leverage is decreased
and is only sufficient to support a small portion of the weight of the spool, so that
if the parts are so adjusted the lever will relieve the drum from the greater portion
of the weight of the spool, preventing the compacting of the several strands upon
the spool and allowing the yarn to be freely removed therefrom.
When the spool is removed from the levers G, by the operator, the levers spring
back and the short arm g', of each strikes an abutment I, which has a V-shaped
head for receiving the arm as shown in perspective view, this abutment is guided
by the upright E, and has an extension which rests directly under the bracket e,
the screw-threaded portion h', of the spring H, passing through an orifice in said
extension so that when the arm is thrown back by the spring in striking the abut-
ment it is cushioned by the spring itself.
Other abutments may be used without departing from my invention and n weight
may be used as shown by dotted lines in Fig. 1, which can be substituted for the
spring, but I prefer to use the spring in all casos.
It will be understood that my invention may be applied to the spool supports of
carding machines or winding frames upon which are mounted the spools for
receiving the roving to be drawn out and twisted in the mule or spinning machine.
Having now particularly described and ascertained the nature of the said iuven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination in a mule, of the drum, the spool, a pivoted lever for
taking part of the weight of the spool, an upright E, to which said lever is hung
and a bracket E', the said upright being vertically adjustable on said bracket,
substantially as hereinbefore set forth.
2. The combination in a mule, of the drum, the spool mounted thereon, guides
for said spool, and levers for supporting said spool and relieving the driving drum
of the full weight of said spool, substantially as heroinbefore described.
3. The combination in a mulo, of the driving drum, the spool mounted thereon,
-guides therefor, a pivoted lever, one arm of said lover passing under the trunnions
of the spool, a spring connected to the other arm of the lever and in such relation
to the pivot of said lever that as the yarn is drawn off from the spool, the leverage
-of the spring will be decreased, substantially as hereinbefore described.
4. The combination of the drum B, the spool D, mounted thereon, standard C,
for guiding the spools, levers G, uprights E, to which the lovers are pivoted, the
-long arm of each lever passing under the trunnions of the spools, springs connected
to the short arms of each lever and to the uprights and adjustable so as to alter the
-amount of tension, substantially as hereinbefore described.
5. The combination of the drum, the spools mounted thereon, the standards
guiding said spools, the lovers for supporting the spools, uprights upon which the
levers are mounted, a spring connected to the short arm of the lever, an abutment
for the short arm of the lever and mounted upon the spring so that when the lever
is relieved of the weight of the spool it will be cushioned by its spring, substantially
as hereinbefore described.
6. The combination in a mule, of the drum and spool, with mechanism for
sustaining part of the weight of the spool in such a manner that the spool will at
all times have a given bearing upon the drum, substantially as and for the purpose
.hereinbefore described.
1000