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Патент USA US2133711

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Oct 18, 19384
I
J. s. MCALISTER ET AL
2,133,711
STOPPING DEVICE FOR YARN WINDING MACHINES
Filed Dec. 11, 1956
2 Sheets-Sheet 1
v‘
‘
. ATTORNEYS
Oct 18, 1938-
2,133,711
J. s. MCALISTER ET AL
STOPPING ‘DEVICE FOR YARN WINDING MACHINES
Filed Dec. 11, 1936
2 Sheets—Sheet 2
INVENTOR
BY
-
6 . mm
‘xi/MW
ATTORNEYj
2,133,711
Patented Oct. 18, 1938
UNITED STATES PATENT OFFICE
2,133,711
STOPPING DEVICE FOR YARN WINDING
MACHINES
James S. McAlister and Ernst C. Sherman, Chat
tanooga, Tenn., assignors to Standard-0005a
Thatcher Company, a corporation of Tennes
see
Application December 11, 1936, Serial No. 115,300
9 Claims.
This invention relates to a stopping device for
yarn winding machines and has for its primary
object the provision of yarn actuated means for
stopping the winding of yarn onto the winding
0
cone, or similar device onto which the yarn is
wound, before enlargements in the yarn are
wound onto the cone, thereby enabling the op
erator to examine the enlargements.
These enlargements are usually in the form of
knots and slubs or tangles occurring in the manu
facture of the yarn, and while some of these do
not need correction or elimination, others do.
However, our invention operates to stop the cone
under control of any enlargements so that the
Ti
. or
v20
operator may examine the knots to see if they are
too large and need tightening, or to see if a slub
should be removed.
Another object of our invention resides in the
provision of an arrangement enabling ready ac
cessibility of the enlargement to the operator to
facilitate examination and correction thereof.
Other objects have to do with certain details
of construction, rendering the device positive in
action although very sensitive and enabling it to
25 be
readily applied to winding machines of
standard construction.
How the foregoing together with such other ob
jects and advantages as may hereinafter appear
or are incident to our invention are realized, is
3 O illustrated in preferred form‘ in the accompany
ing drawings, wherein—
Figure l is a fragmentary end view, partly in
section, of a yarn winding machine embodying
a device constructed in accordance with my in
5 vention; and
'
Figure 2 is an enlarged elevational view illus
trating the device and certain associated parts of
the yarn winding machine.
In the drawings we have illustrated our de
A) vice as applied to a cone yarn winding machine of
well known construction in which a winding cone
3 rests for drive on a driving roll 4 mounted in
suitable bearings carried by the frame 5 of the
_ machine. The winding cone 3 is rotatably mount
ed on a shaft 6 which is carried by a lever device
50
‘I pivoted at 8 for movement by an operating bar
9 having ratchet teeth Ill engageable with a pawl
member I I secured to a shield plate I4. The plate
I4 is pivoted at I5 and has a pivoted catch I6
mounted at its lower portion adapted to cooperate
with an oscillating member H on a rocking shaft
I8, as will further appear.
The yarn is led from a suitably supported spool
I9 through a slub catcher device 20 of well-known
(Cl. 242-36)
construction, and intended to but not always ef
fective to remove slubs, then upwardly over a
glide pulley 2I, then downwardly and under a
guide member 22, then through a traverse mem
In
ber 23 and ?nally onto the winding cone 3.
Our improved device for stopping the cone
under control of the yarn is indicated as a whole
at A and is located at a point in the run of yarn
between the usual slub catcher 20 and the pulley
2 I, it being pointed out that the pulley 2| is lo
cated a considerable distance above the device for
purposes hereinafter appearing.
The device A comprises in general a pendent
lever 24, pivoted at 25 on a bracket 26 mounted.
on the framing 5 of the machine, and a trip de
vice B associated with the lever 24 at its lower
end portion. A roller 21 is carried by the bracket
26 and is so located that the run of yarn engages
it. A similar roller_28 is carried by the pendent 20
lever 24 to cooperate with the roller 21 and con
tact the yarn so that the yarn runs between the
rollers 21 and 28. The construction of the lever
24 and the location of the pivot 25 are such that
with the device as shown in Figure 2, the roller
28 is being urged against the yarn due to the 25
tendency of the lever to move toward its position
of true pendency.
In this position of the lever the catch member
29 which is carried thereby at its lower free end
portion is positioned so that the trip arm 30 is 30
held in non-tripping position as shown. The trip
arm 30 is pivotally mounted at 3I on a bracket 32.
Referring to Figure 1 in which the parts are
shown in the position they assume when yarn is
35
being Wound onto the cone 3, it will be seen that
the cone has been moved into driving contact
with the roll 4 by the operating bar 9; that the
plate I4 is held in the position shown by the
ratchet teeth III; and that the catch I6 is held out 40
of the path of the oscillating member I‘! by means
of a weighted arm 33 which rests on the trip arm
3!] (see Figure 2). In the absence of certain de
fects in the yarn and if the thread does not
break, winding of the yarn will continue until
the operating bar 9 is moved to remove the cone
3 from the driving roll or until the power is shut
off. However, if there are defects in the yarn
such as knots and slubs or tangles, winding of
thread onto the cone is automatically stopped by‘ 50
the device A in the following manner.
Assuming that an enlargement such as a knot
or slub has passed the slub catcher 29, this in
passing between the rollers 21 and 28 moves the
roller 28 tothe right thus causing the lever 242.55
2,133,711
2 .
with its catch member 29 to swing to the right
ing member, a trip device having a portion co
and release the trip arm 30. When the trip arm ‘ operating with a portion of said lever and adapt
is released the weighted arm 33 swings downward
ly to the position indicated in dot-and-dash lines
at 33a and moves the pivoted catch Hi to the
position indicated in dot-and-dash lines at lBa,
so that it is in the path of the oscillating mem
ber ll. This member then carries the catch 16
with it to the position indicated at 16b and
ed to be tripped when an enlargement in the yarn
engages said contact member, and a member
carried by said latch means adapted to be actu
ated by the trip device when it is tripped to move
the latch means into the path of said oscillating
member.
2. In a yarn winding machine the combination
10 moves the plate I4 to the position indicated at ‘ of a winding cone, means for guiding a run of. 10
Ma.
Since the member ll carried by the plate
14 is in engagement with a tooth of the ratchet
bar 9, the lower arm la of the lever device 1 rocks
to the right and the upper arm lb rocks upward
ly lifting the winding cone 3 out of contact with
the driving roll 4 and this causes the cone to stop.
There is a certain amount of momentum in
rotating parts which carries the enlargement on
past the device A after the trip has been re
20 leased and in order to prevent the enlargement
from being wound onto the cone 3 I have pro
vided the upper guide pulley 2| and have located
it a considerable distance above the device A.
The location of this guide pulley is important
in order to facilitate inspection of and access to
the defect in the yarn and, therefore, the dis
tance that the pulley is located above the device
A is so calculated that by the time movement of
the yarn ceases the enlargement will have
30 reached a position in the run of the yarn Where
it is readily accessible to the operator for in
spection or correction.
The device is very sensitive, it being noted that
the point of contact with the rollers is relatively
35 near the pivot 25 of the pendent lever and that
the lever is of considerable length so that a very
small movement of. the roller 28 causes a much
larger movement of the trip catch 29 whereby
very positive action is ensured. Thus both large
‘and small slubs or knots Will cause the Winding
operation to stop to enable inspection, and if a
slub is found to be so small as to be unobjection
able or if a knot is found to be sufficiently tight,
winding may be resumed Without‘ making a cor
rection,
and if too large correction or elimination
45
may be made.
.
We have also associated means with the device
A whereby it will cause winding to stop in the
event that the thread breaks, as shown in Figure
50 2, and comprising a lever 35, preferably in the
form of a wire pivoted at 36 and having an upper
arm 37 and a shorter lower arm 38. The longer
arm 31 carries a guide member 39 at its free end
which rests against the yarn so that normally
55 the lever 35 assumes the position shown. When
the yarn breaks the lever 35 swings in a counter
clockwise direction due to the overweight of the
upper arm 31, and then the lower arm 38 strikes
the lever 24 moving it to the right and releasing
60 the trip device B to stop the winding cone in the
manner above described.
We claim:
1. In a yarn winding machine, a driving roll,
a winding cone driven thereby, mounting means
65 normally holding said cone in driving contact
with the roll, said means being adapted to lift
the cone out of. driving contact with the roll,
means for guiding a run of yarn to said cone, a
lever pivotally supported adjacent said run of
70 yarn, a member carried by said lever in contact
with said run of yarn, an oscillating member
yarn to said winding cone, a ?xed support; a
lever suspended from said support, means on said
lever engaging said run of yarn and adapted to
cause movement of said lever when an enlarge
ment in the yarn comes in contact therewith,
trip means engageable with a portion of said
lever adapted to be released upon such movement
of the lever, and means in engagement with the
trip means for stopping the winding cone when
the trip means is released, said guiding means 20
including a guide member over which the yarn
passes positioned to provide a substantial run of
yarn between the yarn engaging means and the
winding cone.
3. In a yarn winding machine, a yarn operated 25
trip mechanism comprising a pendent lever, a
yarn contacting member carried by the lever, a
catch member carried by the lever adjacent its
free end portion and a trip arm normally held in
non-tripping position by said catch member, said 30
trip arm being released to tripping position when
a condition in the yarn causes said contacting
member to move said lever out of pendency.
4. In a yarn winding machine, a yarn operated
trip mechanism comprising a substantially verti 35
cally disposed lever pivoted at its upper portion,
a member positioned on said lever so as to con
tact the yarn, and tripping means associated with
said lever at its lower portion normally held in
non-tripping position by the lever and adapted 40
to be released when a condition in the yarn causes
the contact member to effect movement of the
lever.
,
5. In a’ yarn winding machine, a winding cone,
a yarn operated trip mechanism comprising a 45
pendent lever, a ?xed support on which said lever
is pivoted, a run of yarn leading to said winding
cone, a guide roller for the thread mounted on
a ?xed axis, a cooperating guide roller carried
by said lever, said run of yarn passing between I
said rollers, and trip means associated with the
lever at its lower free end portion adapted to be
tripped when an enlargement in the yarn passes
between the rollers.
V
6. In a yarn winding machine, a winding cone, 55
a substantially vertically disposed lever pivoted
at its upper portion, trip means associated with
said lever at its lower portion, and means adja
cent the pivot of the lever actuated by the yarn
where irregularities occur therein to move the 60
lever to trip said trip means.
7. In a yarn winding machine, a yarn oper
ated trip mechanismrcomprising a substantially
vertically disposed lever pivoted at its upper por
tion, means adjacent said pivot adapted to con 65
tact the yarn and cause movement of the lever
when an enlargement in the yarn engages said
means, and tripping means associated with said
lever at its lower portion normally held in non
tripping position by the lever'and adapted to be 70
released when an enlargement in the yarn causes
for imparting lifting movement to said mounting
‘ said contact means to move the lever.
means, latch means having a portion in ratchet
engagement with said mounting means and a
‘trip mechanism comprising a suspended lever, a
76 portion normally out of the path of the oscillat
8. In a yarn winding machine, a yarn operated
pivot for suspending saidlever, a yarn contacting
75
2,133,711
member carried by the lever adjacent said pivot,
and tripping means associated with saidlever at
3
is pivoted, a run of yarn leading to said winding
cone, guide means for the thread carried by said
its lower portion normally held in non-tripping
?xed support, cooperating guide means carried by
position by the lever and adapted to be released
said lever, said run of. yarn passing between said
two guide means, and trip means associated with
the lever at its lower portion adapted to be
tripped when an enlargement in the yarn passes
between said two guide means.
JAMES S. MCALISTER.
10
ERNST C. SHERMAN.
when a condition in the yarn causes said yarn
contacting member to effect movement of said
suspended lever.
9. In a yarn winding machine, a winding cone,
a yarn operated trip mechanism comprising a
10 pendent lever, a ?xed support on which said lever
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