and other Fibrous Materials.
Year: 1886

page_text: and other Fibrous Materials.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex, 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 machines for doubling and twisting yarns of cotton, or
other fibrous materials; and consists chiefly (1) of a self-acting device for taking
up the slack of yarn and thereby preventing the kinking which occurs at the
starting of the machine and also for stopping the motion of the upper feed-roller,
when the yarn breaks; and (2) of a device for requiring the individual yarns to be
drawn evenly or equally from the several spools and to pass evenly between the
feed-rollers preparatory to receiving the twist which incorporates them into a
single yarn.
In the accompanying drawing.
Figure 1 is partly an elevation of one end and partly a section on the line 1-2,
Figure 2, of an ordinary twisting machine embodying my invention, a portion of.
the end-face-plate of the machine being broken away.
Figure 2 is a front elevation of one section or division of the machine.
Figures 3 and 4 are respectively side elevations of the feed-rollers and of the
pivotted levers and lever-rest, constituting my device for taking up the slack yarn
and stopping the motion of the upper roller, the former view shewing the relative
positions of the levers and rollers when the doubling and twisting operation is
proceeding normally, and the latter view showing the relative positions of the same
parts when the yarn has broken and the upper roller been raised.
Figure 5 is a side elevation of the evener.
Figure 6 is a plan of the stopping device, evener and upper roller.
Figures 7 and 8 are side and front elevations of a casting which is the equivalent
of the pivotted wire lever f¹.
a represents the face-plate of one end of a doubling and twisting machine; b the
spool stand, and c the spools containing yarns to be doubled and twisted.

page_text: °
d is the lower or driving roller extending the length of one division of the
machine and journalled in bearings in the pillow blocks e and e¹ and fis the upper
roller, the journals of which turn in open bearings as at g.
h is the hinged wire-board; ; ; represent the spindles; l bolsters; m the
bolster-rail; n n the spindle whirls; o o steps; p the step-rail; qq bobbins ;
rings; & the ring-rail; t the lifter; u the connecting bar between the ring-
rails and the lifter t; v and pulleys on the shafts w and w₁; and x and x¹
belts for driving the spindles ; on the two opposite sides of the machine.
A driving pulley (not shown) is placed at the extremity, of shaft w, and this
pulley is connected by a belt with line shafting to obtain power for running the
machine. y and z represent rods which extend to the rear of the rollers for the
length of a division of the machine, these rods being conveniently supported by
brackets a¹ and b¹ (see Figure 1) attached to the pillow blocks e and e¹. The
rode is the shaft of the several stop-levers which I will now proceed to describe.
c¹ is a wire lever of the form clearly shown in Figures 3 and 4. It may consist
of a single piece of wire with the enlargement or casting c³ formed around it, or it
may consist of two separate pieces of wire, screwed or otherwise secured to the
enlargement or casting c², dris the shaft-hole, through which the rod z passes,
and eis an adjustable weight. The lever c¹ vibrates freely on the rod or shaft z.
f is a short lever pivotted on the lever cand made with an upward bend, as
shown. g is a non-metallic strip adjustably attached to the lever f¹ This strip is
preferably made of vulcanized paper, and it may consist of paste-board or other
like stiff material, but should not be metallic, because a metal strip is found to
unduly wear the rollers when in contact with them.
is a wire rigidly attached to the lever f¹. This wire rests on the rod h³, and
supports the strip g₁ in such position that the forward end of the strip is caused to
come near to, but is kept from touching, the rollers (see figure 3) when the machine
is working regularly. This condition is essential to the successful operation of the
stop-levers, as I have found, from practice, that if the end of the strip g¹ rests in
constant contact with the rollers when they are running it catches lint and dirt
from the rollers to the serious detriment of the operation.
The rod h² extends the length of a division (corresponding with the length of
the lower or driving roller) of the machine, and is supported by posts, one at each
end, rising from the frame of the machine. is the evener, which, preferably,
consists of a wire bent to form the loop j³, and is attached to the casting or
enlargement j³ which is provided with the shaft-hole j for the rod or shaft z. k is
an adjustable weight. The evener i vibrates freely on the rod or shaft z and is
not restrained in the extent of its movement. The yarns l' and m³ intended to be
doubled and twisted are passed through the loop ; of the evener, thence between
the rollers d and f, over the upper roller f, around the rod y, thence between the
rollers d and fand through the hook c³ at the fore end of the lever c³, thence
through an eye in the wire-board h, and through the traveller ring to the bobbin,
receiving the requisite twisting between the rollers d, f and the bobbin upon which
the twisted strand is wound.
The weight k is adjusted on the evener i to suit the strength of the yarns to be
twisted; and whenever from any cause the individual yarns are delivered unevenly
by the spools, the weight k depresses the evener and draws the yarn having the
greatest tension until it is delivered evenly with the other yarn or yarns; this
action takes place automatically whenever the individual yarns are delivered
unevenly by the different spools.
When the yarn breaks in front of the rollers, the fore-arm of the pivotted
lever c instantly swings up to the driving roller d, causing the front end of the
strip g¹ to press under the upper roller fraising it, as shown in Figure 4, and at
once stopping its motion; and whenever the yarn breaks in the rear of the rollers
a similar action takes place as soon as the end of the yarn has passed between the
rollers.

page_text: It will be seen that the fore arm of the pivotted lever c¹ has considerable free
upward motion before it is stopped by coming in contact with the driving roller.
It will also be seen that lever c¹ exerts a constant upward pressure on the yarn,
sufficient to keep that part of it between the rollers and bobbin taut under the
varying conditions of change in the diameter of the bobbin; it thus effects a great
saving in yarn and operatives' time by taking up the slack and preventing the
kinking of the yarn.
It is preferred to use the evener in conjunction with the stop-levers, as described,
but it can be advantageously used without the stop-levers.
Instead of providing the lever f1 with the wire h¹, the lever and wire may
consist of a casting formed in one piece with a rib *, as represented in Figure 7;
and instead of employing the rod h' to support this lever, the lever may in some
frames be supported by or from the cap-bar or other part of the frame independently
of the lever c¹.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is :-
First. The devices for preventing the kinking of the yarn, and, when the yarn
breaks, stopping the motion of the upper roller, viz: the lever c¹, its supporting
shaft z, the upwardly bent lever f¹ pivotted on said lever c¹ said lever f¹ being
provided with the strip g' and with the supporting wire h¹ or rib h*, and a rest h³
independent of said levers, in combination with devices for guiding and twisting
the yarn, substantially as set forth.
Second. The shaft z and the lever i pivotted thereto so as to have a free and
unrestrained vibratory movement thereon, in combination with the feed rollers, the
spools and the devices for supporting the spools for the purpose of evening the
delivery by the spools of the yarns to be twisted, substantially as set forth.
Third. The combination of the pivotted lever c', provided with a strip g¹ and
with a supporting wire h¹ or rib h*; the lever f¹ pivotted on said lever c¹; a rest
independent of said lever; the pivotted lever or evener i and the shaft z, the
levers c' and i being respectively supported by said shaft; the rollers and devices
for guiding the yarns from the spools to the twisting mechanism; the twisting
mechanism and the supports for the spools containing the yarns to be twisted,
substantially as set forth.
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