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Патент USA US2400663

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ßMaly 21', 1.946.
Filed July l0, 1944
Patented May 21, 1946
James R. Tennant, Dallas, Tex.
Application July 1o, 1944, serial No. 544,264
2 Claims. (ol. er1-_38)
This invention relates to spinning frames and
it has iparticular reference to slubbing attach
Therer are several types of slubbing devices
in use, some of which produce the slubbing effect
ments therefor.
in the yarn by speeding up the rear roll 20"(Fig. 3) .
It has been found that this practice imposes a
The principal object of the invention is to pro- '
vide a slubbing de‘vice of simple and economical
construction which will produce a smoother and
tensional stress upon the yarn to such degree
that it is not only drawn out and materially
stronger yarn than heretofore possible and fur
ther, a liner gauge yarn can be produced by the
diameter but also a twist is produced therein
which manifests itself in the ultimate fabric
present invention without the “cork-screw”
effects and irregular diameter of the yarn manu 10 product, of necessarily coarser texture, due to
factured through the medium of other and well
these characteristics in slubbing.
known slubbing devices.
The present invention obviates the foregoing
Another object of the invention is to provide
objectionable characteristics by intermittently
a slubbing device or attachment for spinning
starting and stopping the front roll I3 at pre
frames which is both right and left; has? few 15 determined intervals, which imposes no strain on
working parts; is easy to install and operate;
the yarn. During the momentary inactive inter
requires a minimum amount of attention in
vals of the roller I3, a slackening in the normal
operation and is adjustable to take up wear as
tension of the yarn is permitted between this
well as to predetermine the relative spacing of
roller and the intermediate roller 2 I. W'hen the
20 roller I3 resumes rotation, the slackened length
the lumps or slubs produced in the yarn.
With the foregoing objects as paramount, the
of yarn, in proceeding between the front roller
invention has further reference to certain fea
and the companion bottom roller, is formed into
tures of accomplishment which will become ap
a lump or slub which produces the novel effect
parent as the description proceeds, taken in con
sought in the filler of the finished fabric.
nection with the accompanying drawing wherein: 25 In order to start and stop the front roller I3
Figure 1 is a front elevational View of a slubbing
with precision, the sliding clutch element I1 is
device constructedaccording to the present inven
caused to move into and out of engagement with
the companion element I6 which is driven by
Figure 2 is a side view thereof, partly in ver
shaft I0. Preferred among many possible ar
30 rangements for so actuating the clutch is a
tical section.
Figure 3 is a diagrammatic view of a single
plunger 22, operated by lugs 23 añ‘lxed to the
roving creel, and
face of the crown gear I5 and spaced apart.
To support the plunger 22, an arm or bracket
Figure 4 shows a swatch of fabric produced
24 is provided, which is secured at some suitable
from slubbed yarn.
stationary point on the frame of the machine
Continuing with a more detailed description
by means of a bolt 25. Provision is made for
of the drawing, reference is primarily made to
adjustment of the position of the arm 25 in the
Figure 2 wherein I0 denotes the prime mover
slot 25 through which the bolt 25 passes. A
shaft for operating the draft gearing of a spin
ning frame. On the inner shaft Il is formed a 40 bronze bushing 21 is secured in the head of the
arm 24, serving as a bearing for the plunger and
spindle i2 which engages and operates the front
in which the latter reciprocates. The inner end
roll I3 (see Fig. 3), and which is the only one
of the plunger carries a roller bearing 28, operat
of the roll assembly affected to produce the
ing on a pivot shaft 29 and against which the
results sought by the invention, to become mani
lugs 23 engage as the crown gear l5 rotates.
fest presently.
Obviously, as the lugs strike the roller 28 on
Mounted on the prime mover shaft I0 is a
plunger, the latter is constrained to yield
pinion I4 whose teeth engage those of a crown
longitudinally, and in so doing, causes the sliding
gear I5 to drive the same. The pinion I4 has a
clutch element I 'I to retract from the companion
clutch element I6 affixed thereto or formed inte
element I6 with which it is engaged. This action
grally thereon, which cooperates with a com 50 is brought about through the yoke 30, reposing
panion clutch element I'I. The prime mover shaft
in an annular groove 3l about the clutch element
I9 is provided with an axial bore I8, adapted to
I1, and provided with a split collar 32 by which
receive the reduced end I9 of the inner shaft II
it is secured, by means of a screw 33, to the
so that the shaft Ill may rotate independently
plunger 21.
of the shaft I I.
Resisting movement of the clutch element l1,
ion on said shaft engaging said draft gear and
2 above
1 explained, is a coil spring 311, surround
ing the inner shaft Il, YThis spring is disposed
carrying a clutch element, anarcuate arm ’ad
Yjustably mounted adjacent to and overreaching
betvveen'the clutch element l1 and a shoulder 35
on the shaft Il.
said shaft, a companion clutch element recipro
cably mounted on 'said shaft, a compression
,Should'any fatigue occur in the spring 34 after
spring normally holding said latter clutch ele
ment in engagement with said ñrst clutch ele
ment, a plunger supported by said arm at right
a long period of operation, the arm 24 may be
moved on its mounting to Vimpose greater tension
thereon from time to time with little effort.
Moreover a change in the number and spacing
angles to said draft gear, a fork carried by saidV
‘ of the Vlugs on the Acrown gear will be `effective 10
plunger for actuating _said reciprocable clutch
to change vthe starting and stopping intervals of
element against the resistance of said spring, a
the roller I3 and the effects thereof Will be re
roller on an end of said plunger and means car'- Y
such machine would differ only to the-extent that "
ried adjustably by said draft gear, periodically
flected in the finished product.
engaging said roller to actuate said plunger to
The device shown is adapted for operation on
the left side of a spinning Vframe and the same 15 effect reciprocation kand consequentv disengage
ment of said latter clutch element with said first
device, equipped to function on the right side Vof
the pitch of the clutch teeth Ywould be reversed v v
a clutch element aflixed to said pinion, a com
panion clutch element on said shaft, a `spring
urging said companion element into engagement ,
with said ñrst clutch element, a plunger parallel
with said prime mover shaft, a fork carried there
invention and the result as'to render a separate
description of operation unnecessary.
’What is claimedis:
1. In a yarn slubbing attachment >for a spin
ning frame, the combination comprising Va prime
mover shaft, roll assembly and draft gear, a Vpin
the> combination comprising Va prime mover shaft
»operating the roll assembly of said frame, a pinion>
on said shaft, a draft gear driven by said pinion,
and the arm 24 would be on the side of the shaft
I l from that shown.
It is believed that the foregoing includes sufñ
cient reference to the mode of operation lof the
Manifestly, the construction as shown and de
scribed is capable ef some modification and such
modification as may be construed to fall Within
the scope and meaning> of Vthe appended claims
is also considered to be Within the spirit and in
tent of the invention.
' 2. »,Inragyarn slubbing device for spring frames,
by and engaging said companion clutch element,
a roller on the inner end of said plunger and Y
means vadjustably mounted on’said draft gear,
periodically engaging and reciprocating saidV
plunger to correspondingly actuate said compan
ion clutch element to periodically suspend rota
tion of one rollrof said roll assembly.
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