Improvements in Stop Motions for Spinning, Twisting, and Winding Machines.
Year: 1897

page_text: Improvements in Stop Motions for Spinning, Twisting, and
Winding Machines.
I, FRED LACEY, of Valleyfield, Province of Quebec, Canada, Superintendent, do
hereby declare the nature of this invention to be as follows:-
This invention relates to that class of mechanical devices called "stop motions,"
which are adapted for use on spinning, winding, and twisting machines.
It is not deemed necessary to set forth the necessity for stop motions on this class
of machines, to those skilled in the art, and for whom this description is intended, as
the waste of material and injury to the thread resulting from "running single," or
with less strands than required to make a perfect thread in the case of the twister or
winder and the waste of roving and the clogging up of the drawing rolls in the breaking
of the thread in the spinning are well known. Between the sets of spools for holding
the yarn to be twisted or doubled into one thread, and the rolls that draw the
yarn from the said spools is placed the stopping mechanism attached to the
rail.
This mechanism consists of a standard secured by means of screws passing
through the foot of the standard into the rail, on one side of the standard a dog
is held free to swing on a pivot. The side of the standard opposite to the dog is
extended out to receive the drop wires, which are held in slots cut vertically across
the extension. The inner ends of the wires are bent into eyes that are held in the
slots by a pin, that passes through all of them leaving the wires free to swing up and
down on the pin. The drop wires are bent down after leaving the standard and
then up and an eye is made on the end of each for one of the yarns to pass
through. A horizontal pin is put in one side of a projection on the dog and extends
under the drop wires. A horizontal rod is held in brackets attached to the side of the
rail under which rod the wires pass, and arms are secured to the rod extending along
the frame to hold a wire, that extends from one arm under the drop wires to the next
arm for the purpose of lifting all the drop wires at once when desired. The upper
end of the dog is made heavy enough to overbalance its lower end when the drop
wires are raised by the yarns clear of the pin but when one of the wires drop on the
pin, its weight is sufficient to overbalance the upper end of the dog and cause the
lower end to fall down in contact with the foot of the standard, it being too long to
swing under the pivot clear of the foot. When all the yarns are intact the tension of
the rolls in drawing them from the spools through the eyes of the wires and by the
guide pin under the dog will hold each wire up and allow the dog to tip back and
give free passage to the yarns to the rolls, but if one of the spools runs out or a yarn
breaks, the drop wire on that yarn will drop and push the dog down by the pin which
077

page_text: will catch all the yarns between the dog and foot of the standard and hold them
from going to the doubled strand with less yarns than are required to make perfect
work.
The stop device may be applied to the roving of a single thread spinner. In this
case it is held on a rail, back of the drawing rolls. The drop wire is secured to the
back of the dog directly, and passing down under the drawing rolls. The eye is held
down near the guide by the thread when it is intact. The back part of the dog
where the guide wire is made fast to it is made heavy enough to overbalance the
wire. When the draft on it ceases or the thread breaks and throws it up, it drops
the lower part of the dog onto the roving and holds it fast between the dog and
the foot of the standard while the revolving rolls break it, and thus prevent the
continued drawing in of the roving.
The application to a winder is the same as the twister only a wire is inserted in the
front of the dog, with a hook at its outer end to catch on the pins inserted in the ends
of the short friction roll that carry the spools and stop the roll and spool when the
dog drops on the yarn.
Improvements in Stop Motions for Spinning, Twisting, and
Winding Machines.
I, FRED LACEY, of Valleyfield, Province of Quebec, Canada, Superintendent, 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 that class of mechanical devices called "stop motions,"
which are applied to various kinds of machines. In this case it is shown adapted to
spinning, winding, and twisting machines.
The invention is illustrated in the accompanying drawing in which
Figure 1 shows the application of the stop motion to a machine for doubling or
twisting two or more yarns together.
Figure 2, is a top view of the stopping mechanism.
Figure 3, shows the application of the stop motion to a spinning machine.
Figure 4, is a top view of the stop motion of Figure 3.
Figure 5 shows its application to a winding machine.
It is not deemed necessary to set forth the necessity for stop motions on this class
of machines, to those skilled in the art, and for whom this description is intended, as
the waste of material and injury to the thread resulting from "running single," or
with less strands than required to make a perfect thread in the case of the twister or
winder, and the waste of roving and the clogging up of the drawing rolls in the
breaking of the thread in spinning are well known. In Figure 1, a set of three
spools are shown holding yarn to be twisted or doubled into one thread, each set of
three spools and spindle being operated independently of the other sets in the
machine, so that only one is shown.
a, a, are the rolls that draw the yarn d, from the spools D, held on the creel board H,
and deliver it to the twisting spindle and bobbin not shown, or in case of a winding
machine to the spools y, Figure 5.
1

page_text: Between the spools D, and rolls a, is arranged the stopping mechanism on the
rail A. This mechanism consists of a standard g secured by means of screws passing
through the foot of the standard into the rail A, on one side of the standard g, a
dog v, is held free to swing on a pivot see Figure 2. The side of the standard
opposite to the dog,. is extended out to receive the drop wires o¹, which are held in
slots f, cut vertically across the extension h. The inner ends of the wires are bent
into eyes that are held in the slots by a pin r, that passes through all of them leaving
the wires free to swing up and down on the pin. The wires o¹, are bent down after
leaving the standard and then up and an eye o¹¹, is made on the end of each for one of
the yarns d, to pass through. A horizontal pin i, is put in one side of a projection on
the dog v, and extends under the drop wires o¹. A horizontal rod n, is held in
brackets 3, attached to the side of the rail A, under which rod the wires o¹, pass, and
arms B, are secured to the rod n, extending along the frame to hold a wire 8, that
extends from one arm B, under the drop wires o¹, to the next arm B, for the purpose
of lifting all the drop wires at once when desired. The upper end of the dog v, is
made heavy enought to overbalance its lower end when the drop wires are raised by
the yarns clear of the pin i, but when one of the wires drop on the pin, its weight is
sufficient to overbalance the upper end of the dog and cause the lower end to fall
down in contact with the foot of the standard, it being too long to swing under the
pivot clear of the foot. When all the yarns &, are intact the tension of the rolls a, in
drawing them from the spools through the eyes o₁, of the wires and by the guide
pin e, under the dog v, will hold each wire up and allow the dog to tip back and give
free passage to the yarns to the rolls, but if one of the spools run out or a yarn breaks,
the drop wire on that yarn will drop and push the dog down by the pin i, which will
catch all the yarns between the dog and foot of the standard and hold them from
going to the doubled strand with less yarn than are required to make perfect
work.
In Figure 3, the stop device is applied to the roving of a single thread spinner. In
this case it is held on a rail A, back of the drawing rolls a¹, a¹. The drop wire o¹, is
secured to the back of the dog directly, and passes down under the drawing rolls a.
The eye ol is held down near the guide t, by the thread b, when it is in contact. The
back part of the dog v', where the guide wire is made fast to it is made heavy enough
to overbalance the wire. When the draft on it ceases or the thread breaks, and throws
it up as shown in dotted lines A¹, it drops the lower part of the dog, onto the roving
and holds it fast between the dog on the foot of the standard while the revolving
rolls break it, and thus prevent the continued drawing in of the roving.
In Figure 5, the application to a winder is shown which is the same as the twister
shown in Figure 1, only a wire vlll, is inserted in the front of the dog v, with a hook
at its outer end to catch on the pins c¹¹¹, clll, inserted in the ends of the short friction
roll a¹, that carry the spools y, and stop the roll and bobbin when the dog v, drops
on the yarn.
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
1. In a stop motion, the combination of a standard, a dog pivoted to said standard
the dog below the pivot being longer than the distance between the pivot and the
foot of the standard, a series of drop wires, a pin in said dog extending under said
series of drop wires to receive them when they drop, substantially as described.
2. In a stop motion the combination of a standard, a dog pivoted thereto the dog
below the pivot being longer than the distance between the pivot and the foot of the
standard, a series of drop wires, a pin fast in said dog and extending under said series
of drop wires, a rod held to turn in brackets and having arm carrying a wire under
the drop wires to raise them when down and allow the threads to be pieced when
broken, substantially as described.
3. In a stop motion the combination of a standard, a dog pivoted to said standard,
the dog below the pivot being longer than the distance between the pivot and the

page_text: foot of the standard a series of drop wires a pin fast in said dog and extending under
said drop wires, to receive them when they drop, a wire inserted in the front of said
dog having a hook on its outer end to stop the roll and spool from winding in the end
of the thread, substantially as described.
30
1
C
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.