Improvements in Spinning and Doubling Machinery.
Year: 1894

page_text: COMPLETE SPECIFICATION.
Improvements in Spinning and Doubling Machinery.
We, CHARLES RODERICK MAKEPEACE, of 12 Cady Street, Engineer, and
WILLIAM LEAVITT HAINES, of 261 Benefit Street, Gentleman, both of
Providence, in the County of Providence, State of Rhode Island, 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 relates to spinning machinery, and more particularly to frames
used for doubling.
The object of the invention is to provide a new and improved stop motion, which
is simple and durable in construction, very effective and automatic in operation, and
arranged for preventing single strands from passing through the drawing rollers in
case one of the strands breaks.
The gist of the invention is embodied in the changes which occur in the relative
positions of the longitudinal axes of two rolls between which pass strands, slivers
or sheets, such changes being occasioned either by a break or by a diminution in
the thickness, of the strand. During the normal passage of the strand or other
material a certain displacement of the rolls occurs, one of said rolls being upheld
and apart from the other by the material composing the strand. In connection
with said rolls is provided certain stop mechanism, so arranged, that a normal
strand between said rolls shall hold the elements comprising the stop mechanism
apart, thereby allowing unrestricted rotation of the rolls. The moment however
the thickness of the strand diminishes or the strand ceases to pass through owing
to a break then the distance between the longitudinal axes of said rolls is reduced
and the parts of the stop mechanism allowed to interlock and prevent all movement
of the rolls.
The invention also consists of certain parts and details, and combinations of this
same, as will be fully described hereinafter.
Reference is to be had to the accompanying drawings forming a part of this
Specification, in which similar letters of reference indicate corresponding parts in
all the figures.
Figure 1 is a front elevation of a stop motion embodying my invention.
Figure 2 is a sectional side elevation of the same as applied; on line 2. 2. in
Fig. 1; and
Figure 3 is a side elevation of the apparatus.
As illustrated in Figure 2, the stop motion is arranged between a group of
drawing rollers A, and the bobbins B and B', and the said stop motion is provided
with a suitably constructed frame C, having slotted standards C', in which are
journalled the shafts D' and E' of rollers D and E, respectively located one above
the other and fluted longitudinally to form toothed or gear wheels, as will be
readily understood by reference to Figure 2. The strands F and F', unwinding
from the bobbins B and B respectively, pass between the rollers D and E near
the sides thereof, as is plainly shown in Figure 1, so that the two rollers are held
out of peripheral contact.
The strands F and F¹, are held in proper position between the rollers D and E,
by the guide G, provided with slots through which said strands pass; the strands
after leaving the rollers passing through the drawing rolls A, as will be readily
understood by reference to Figure 2. The guide G is fitted to slide loosely in
suitable guideways formed in the rear part of the standards C¹ as plainly shown in
Figures 2 and 3. On the ends of the shaft E' of the uppermost roller E, are
Pl

page_text: secured the pins H H', extending radially and in opposite directions, the said
pins normally passing the fixed stop pins I and I¹ which project respectively from
the sides of the standards C, C¹.
But in case one of the strands For F¹ should break or runs thinner between the
rollers D, E, then that side of the uppermost roller E, will move correspondingly
downward, whereby the corresponding pin H or H will move in contact with the
corresponding stop pin I or II, thus forming an interlocking device and thereby
preventing further rotation of the said roller, and consequent breaking of the
strands between the rollers and the drawing rollers A, so that no single strand
whatever, can pass between the drawing rollers.
It is understood that the drawing rollers A in pulling on the strands, cause the
rollers D and E to revolve, and when the uppermost roller E moves downward as
above described, its teeth engage the teeth of the other roller D so that both are
locked in position and consequently a breaking of the other remaining strand will
take place between the locked rollers and the drawing rollers A.
As it frequently happens that the sliver or strand is to vary in weight and to
render the locking devices easily adjustable for a sliver of any weight, the roller
pins or the instrumentalities carried by the upper roller are to be adjustably
mounted. In the present instance they are screw threaded and the ends either
shaped to receive a wrench or slotted for screw-driver, in this way said devices can
be made to compensate for varying thickness or weight of the passing strand
or sliver.
One of the obvious advantages connected with the use of this stop motion is that
in case of a deficit in a strand or sliver, only those bobbins are stopped from which
the defective strand came, while all others may continue in motion.
In this way a
large gain in product is acquired since hitherto it has been the practice to
arrange the stop. motion to stop the entire frame should a break or defect in a
strand occur.
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 stop-motion comprising two revoluble rolls one of which is supported by
the strands or slivers which pass between said rolls, aud locking devices adapted to
engage and check the rotation of the rolls due to approach of the rolls caused by
reduction in the thickness of the passing strand, substantially as and for the
purposes explained.
2. A stop-motion consisting of two rolls one above the other, the top roll adapted
to rise and fall in its bearings, and locking mechanism carried by the upper roll
and arranged to stop the rotation of said rolls and occasioned by the fall of the top
roll, due to decrease in the thickness of the strand or sliver or cessation of the
material passing between said rolls, substantially as specified.
3. A stop-motion comprising two rollers between which pass strands or slivers,
and locking devices provided with movable and stationary or fixed portions for
holding the rollers immovable, the said movable portions norinally tending to lock
with the said fixed portions and be held in a disconnected position by the strands
or slivers, whereby, by the breaking of one of the strauds or slivers the rollers will
be held immovable, substantially as shown and described.
4. A stop-motion comprising two rollers arranged one above the other and
between which pass the strands or slivers, the upper roller resting by its weight on
the material, a pin on the shaft of the said upper roller, and a stop pin adapted to
be engaged by the roller pin whenever one of the strands breaks or decreases in
thickness, substantially as shown and described.
5. A stop-motion comprising two fluted rollers arranged one above the other and
mounted to turn loosely, the upper roller resting by its weight on the strands
passing between the rollers, pins adjustably secured on the shaft of the uppermost
roller, and fixed stop-pins projecting from the frame and adapted to normally allow

page_text: free passage of the said roller pins, but to engage the same when one of the strands
breaks or decreases in thickness, substantially as shown and described.
6. A stop-motion interposed between the drawing rollers and the bobbins, and
comprising a frame having slotted standards, fluted rollers journalled loosely in the
said slotted standards and arranged one above the other, pins held on the shaft of
the uppermost roller, stop-pins projecting from the standards of the said frame and
normally passed by the said roller pins but engaged by the same on the breaking
of one of the strands or a decrease of thickness, and a guide .held loosely on the
frame for guiding the strands between the rollers near the ends thereof, substantially
as shown and described.
Dated this Twenty-seventh day of April 1894.
CHARLES RODERICK MAKEPEACE.
WILLIAM LEAVITT HAINES.