Improvements relating to Spindles for Supporting Bobbins or Spools while Thread is being Unwound therefrom.
Year: 1893

page_text: Date of Application, 19th Dec., 1893-Accepted, 23rd June, 1894
COMPLETE SPECIFICATION.
Improvements relating to Spindles for Supporting Bobbins or Spools
while Thread is being Unwound therefrom.
I, FREDERIC WILLARD EASTON, of 74 Weeden Street, Pautucket, County of
Providence, State of Rhode Island, United States of America, Manufacturer of
Machinery, 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 :—
My invention relates to an improvement in the holder of the bobbin-spindle in
machines for winding thread off from ring-frame bobbins.
The nature of my invention consists in the improved construction and arrange-
ment of the spindle step and holder, whereby a practically uniform tension will be
exerted upon the thread, as it is being unwound from the bobbin or spool on the
spindle.
In the accompanying drawings
Figure 1, represents a side view of my improved bobbin spindle holder.
Figure 2, represents a longitudinal section of the same.
Figure 3, represents a front view taken at right angles with the axis of the
inclined spindle.
Figure 4, represents a side view of the spindle step, removed from the holder.
Figure 5, represents a front view of the same.
Figure 6, represents an end view of a winding machine, showing the position of
the spindle holder on the frame.
upon
In the drawings, A represents the fixed rod upon which the spindle holder B is
secured, by means of the set screw C, the said spindle holder being provided with
the friction cushion D, made of felt or other suitable material adapted to friction
the spindle E, so as to cause the proper degree of tension the thread a, which
is being drawn from the spool F, on the spindle. The spindle step G is provided
with a turning fulcrum 6, which is offset upon the inner side of the line of the axis
of the spindle, as shown by the dotted axial line in Fig. 2, the said turning fulcrum
being formed by a notch or recess c, in the holder B. The spindle holder B is
attached to the rod A. so that the spindle E will lie at about an angle of forty-five
degrees from a vertical line or so inclined that the friction between the periphery e
of the collar fupon the spindle E and the cushion D, will serve to produce the
required degree of tension upon the unwinding thread a, and in this case upon the
occurrence of an obstruction to the free unwinding of the thread or if the thread is
drawn from the spool more rapidly, then, the resulting increased amount of tension
will cause the slight backward movement of the spindle and its step so that the
periphery e of the collar f, will bear with less pressure and consequently with less
friction, against the friction cushion D, thus compensating for the increased
difficulty in the rapid unwinding of the thread, and in case of a serious obstruction
to the rapid unwinding of the same or a sudden jerk upon the thread, the collar ƒ
may be drawn completely away from the friction cushion D, so that the spindle can
revolve freely, as shown in Figure 2.
The spindle E is held to its seat in the step G by means of the wire g which
screws into the lug h on the holder B and at its upper end turns inward over the
top of the collar f, thus securing both the spindle E and the step G to the holder B.
The arrangement of the spindle-holder B, relatively to the spool I upon which the
thread a is to be wound from the bobbin F, is shown in Figure 6, the rise and
fall of the traverse rail J serving to distribute the thread to the periphery of the
spool I.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
The combination with the inclined spindle holder provided with the friction
cushion, and a downwardly extending offset portion which forms a turning fulcrum
for the spindle step, of the spindle step having a downwardly extending offset
portion to bear upon the offset turning fulcrum of the holder, and the spindle
provided with the friction collar above the spindle step, substantially as described.
Dated this 21st day of November 1893.
FREDERIC WILLARD EASTON.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.