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Патент USA US3061228

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061. 3o, 1962
s. FURST ETAL
3,061,216
MULTI-STATION WINDING MACHINE WITH SERVICING UNIT
Filed Feb. 2'?, 1959
2 Sheets-Sheet 1
Oct. 30, 1962
s. FURsT ETAL
3,061,216
MULTI-STATION wINDING MACHINE WITH sERvIcING UNIT
Filed Feb. 27, 1959
2 sheets-sheet z
United States Patent Ó Lice
3,661,216
l'i‘látented Oct. 30, 1962l ‘
i
2
3,961,216
yarn absence in the station being serviced. However, it
is possible in the machine that the stop member may be
already actuated at a moment .before it is accurately
positioned `opposite the stop recess in the boss of the
s MULTI-STATION WINDING MACHINE WITH
SERVICING UNIT
Stefan Fürst, Manchen-Gladbach, and Manfred Rühl,
tubular carrier structure which forms a travel path for
Rheydt, Germany, assigncrs to Walter Reiners, Mon
chen-Gladbach, Germany
Filed Feb. 27, 1959, Ser. No. 796,049
Claims priority, application Germany Feb. 28, 1958
17 Claims. (Cl. 242-356)
Our invention relates to multi-station coil-winding ma
:the servicing unit. Thus it may happen that the servicing
unit becomes arrested somewhat prematurely or some
what later than is desirable for most accurate perform
ance. In order to obviate such possibility, the recess in
10 the boss can be designed as an elongated slot extending
in the travel direction of the servicing unit. Such an
as the spinning cops as they come from the spinning
elongated recess, however, would yhave the disadvantage
that the servicing unit, `depending upon whether it arrives
machine, into larger yarn packages of desired shape and
from the right or the left, becomes stopped at different
chines for re-winding relatively sm-all yarn packages, such
size. lIn `a more particular aspect, my invention relates
or non-uniform locations. That is, the stop member or
to the `sequential servicing of the winding stations by
_tappet described in application Serial No. 728,139 would
means of a single tender or servicing unit whenever it
becomes necessary for that unit to elminate stoppage
conditions in a station as may be caused by yarn break
20
age or depletion of the yarn supply coil.
Iat the left side, «but would abut in another case against
the end of the slot at the right side. In order to obtain
an accurate cooperation of the servicing unit with the
in one case abut against one end of the elongated recess
winding station under such conditions, the cooperating
Multi-winding stations `of such type, comprising a
single servicing unit common to a number of stations,
devices of each station on the one hand and of the serv
icing unit on the other hand lmust be given a particularly .
have previously been disclosed in copending applications
wide design so that they remain actively engageable with
Serial No. 675,577, filed August 1, 1957, now abandoned;
Serial No. 691,632, tiled October 22, 1957; and Serial 25 each other despite the above-mentioned diiferences in po
sition of the arrested servicing unit. Furthermore, for*
No. 728,139, tiled April 14, 1958, all of these applica
reliably inserting the yarn ends into the knetter, it is
tions being assigned to the assignee of the present in
necessary to provide a particular yarn-guiding or thread
vention. Our invention, more in particular, is related
ing device which oífers the yarn end to the knotter always
to improvements in machines of the type disclosed and
claimed in said applications and is hereinafter described 30 at the same, narrowly limited location regardless of .¿
whether the unit is arrested in the above-mentioned
with particular reference to improvements made in the
right-hand position or left-hand position of the arresting-
machine as illustrated and described in the above-men
tioned application Serial No. 728,139. The multi-station
slot.
winding machine according to any pending application
>
It is therefore an object of our invention to improve .
machines of the above-mentioned type so that the windingv
unit is always accurately arrested in a single prede
Serial No. 728,139 is provided with a travelling tender
or servicing unit which can pass by the individual winding
stations in two directions of travel. The servicing de
termined location in front of each individual winding
unit regardless of the particular travelling direction of
vices mounted on the unit, namely the yarn-end seizing
the servicing unit. As a result, the above-menthioned
and knotting devices or the devices for exchanging a
depleted yarn supply coil by a new full coil, are placed 40 shortcomings of the known types of machines are elimi
nated.
in operation only if such servicing operation becomes
necessary in any one individual station and this necessity I
According to one of the features of our invention, the ,
is signalled by a fault-responsive sensing device of that»A
station. The servicing unit is provided with switching or
above-mentioned improvement is achieved by inserting
between the stop member or tappet and the control switch
control means which cause the unit to change its travelling
of the servicing unit an elastic member which is stressed '
speed or, preferably to become temporarily stopped, de
pending upon whether and what particular kind of serv
when
operation
the control
by the switch
fault-responsive
of the servicing
yarn guard
unit isofplaced
an indi-V
in
vidual winding station, regardless of whether the travel- "i
ling servicing unit approaches that station from the left if
icing work is needed at an individual station.
It should be understood that the servicing unit de
scribed herein as being movable relative to a stationary
group of winding stations, is intended to include, with re
or from the right. By means of a novel stop member and
arresting recess the device assures a reliable arresting of
the servicing unit always at the one most accurate loca
tion in front of a winding station to be serviced.
According to another feature of our invention, the stop `
spect to the present invention, `any arrangement within
the scope of the claims annexed hereto where a relative
motion exists between thhe winding stations on the one
hand and the servicing unit on the other hand. Conse
quently, the invention is applicable in cases where the
member for arresting the travelling servicing unit and
winding stations are stationary and the servicing unit
-travels periodically along the series of stations, as well
member are so interconnected that the servicing devices
as to machinery in which the servicing unit is stationary ’
unit is arrested relativeto the winding station.
and the winding stations travel along that unit; anal
ogously, the relative travel motion may also apply to
Analogously, when» the servicing operation is termi- `
nated, the arrested servicing unit is released by the stop'
machines in which the winding stations on the one hand
and the servicing unit on the other hand are both mov
their operation so that a second cycle of such servicing
able but at respectively different speeds in order to pro
duce the desired relative displacement between the serv
icing unit and the winding stations.
`According to application Serial No. 728,139 the
travelling servicing unit is provided with a stop member
for arresting the relative travel of the unit. The stop
the pawl or other release member for releasing lthe stop
of the unit commence operating only after the servicing
'
member only after the servicing devices have completed
operations can no longer be started.
DD
`
-
According to a further feature of our invention, the
accurate fixing of the servicing unit relative to an indi
vidual winding station-during the servicing operations of
the servicing unit is utilized in those cases where such -an
accurate ñxing is absolutely necessary; but the device is
member is connected through a linking member with the 70 also capable .of performing other servicing operations
releasing or start-stop device which causes the servicing
>that do not- requirel such-accurate fixing, already before
the winding station is accurately stopped in the precise 'v‘
means of the unit to operate for eliminating a fault or
.
3,061,216
4
position. More particularly, the just-mentioned discrim
in the event of yarn failure. A double-armed lever 18,
19 is fastened to the yarn guard 17 in the vicinity of
inating operation with respect to the performance of the
servicing devices on the travelling unit is effected by pro
viding a force storer between the releasing member 30
and the stop member 31.
the pivot axis 17a.
The fault-responsive pivoting mo
tion of the guard 17 in the clockwise direction causes
the winding station to be stopped in the known manner
According to still another feature of our invention, an
additional saving in time is achieved by providing means
for moving the stop member out of the position in which
it fixes the servicing unit in accurate position relative to
the winding station, before the cycle of servicing opera
tions of the servicing unit is fully completed.
The foregoing and other objects, advantages and fea
tures of our invention will be apparent from, and will be
described in the following with reference to the embodi
ments of multi-station winding machines according to the 15
by lifting the pick-up spool 13 off the guiding drum 11
and braking the supply coil 14. Since the lifting mech
anism is known as `such and not essential to the invention
proper, it is not illustrated in order not to obscure the
other components. Lever arm 18 in relation With arm
19 forms a switching segment, and arm 18 serves also
for resetting the yarn guard 17.
The tender 5 has running wheels 24 which roll along
the tubular carrier 4. Rollers 24a journalled on the
tender 5 serve to guide the tender along the bottom rail
invention illustrated by way of example on the accom
20. At least one of the two Wheels 24 can be pulled
panying drawings, in which:
off its shaft; and the tender 5 can then be lifted out of
FIG. 1 is a front view of a winding machine equipped
the assembly. For this purpose, the tender is turned
with a servicing unit.
about the axis of the bottom rail 20 and can then be
iFIG. 2 is a cross section of the same machine taken 20 lifted past the upper rail 22. The insertion of the tender
through the servicing unit.
is effected in the opposite manner. For facilitating such
FIG. 3 shows in cross section on an enlarged scale the
removal or insertion, the last location 3a (FIG. 1) on
devices for arresting and releasing the servicing unit.
FIG. 4 shows the components of FIG. 3 in longitudinal
the multi-station machine may be left vacant or the in
dividual winding station located at this point can be
section.
25 made removable.
FIG. 5 illustrates a front view of another machine
Mounted on tender 5, at the servicing side thereof, is
according to the invention provided with electric means
a switch arm or switching member 25 (FIG. 2) which is
for actuating the stop member and releasing member.
FIG. 6 illustrates schematically another modification
including electric control means.
FIG. 7 shows schematically a further modification with
mechanical control means.
IFIG. 8 illustrates schematically a modification ap«
plicable for hydraulic or pneumatic control operation.
kept in approximately vertical position by a tension spring
29a. Switch arm 25 is fastened to a shaft 27 which
30 carries a crank 28. Rotating motion of switch arm 25
thus causes the crank 28 to pull against spring 29a Which
pulls a stop pawl lever 30 away from and a lever 42
simultaneously against a start-stop control cam 32. The
motion of crank 28 is transmitted through spring 29a
In the winding machine according to FIGS. 1 and 2, 35 to the pawl lever ‘30 which imparts this motion to a
latch 31. When latch 31 is thus moved downwardly, it
the mobile tender or servicing unit 5 «travels along the
can enter into the center bore of a boss 51 on carrier
machine in front of the individual Winding station in the
4, thus arresting the tender and latching it to the tubular
same manner as is more fully described in the applica
carrier 4. The pawl 30 and the latch 31 cooperate with
tion Serial No. 728,139.
In the machine illustrated in FIG. 1, two lateral stand 40 cam disc 32 which has a cam notch 34 into which the
pawl 30 can enter, whereby the pawl arrests the cam disc.
ards 1 and 2 of the machine frame or carrier structure
are connected with each other by a tubular horizontal
carrier 4. Mounted above the carrier 4 are a number of
Cam disc ‘32 has a cam groove 33 and a dog 35.
In a
given rotational position of groove ‘33, a control lever 36
carrying a spur-gear segment 37 can enter into the groove.
individual coil winding stations generally designated as 3
along which a servicing tender 5 may travel. The tender 45 Segment 37 meshes with a pinion 38 which is connected
5 carries the servicing devices required for eliminating
.the faults and stoppages of the coil-winding operation in
the respective winding stations 3. A motor 6 drives, by
with a suction tube 39 for conveying the yarn end to be
found and seized.
By virtue of the elastic connecting member, namely
the spring 29a, the stopping recess 31b (FIG. 3) in the
means of transmission 7, two endless chains 8 and 9
(FIG. 2). The chain 8 serves to entrain the tender 5 50 boss 51 of the carrier structure 4 need not be given an
elongated shape because the stop member 31 is placed
along the machine. The chain 9 serves for driving the
servicing devices of the tender 5. Conventional reversing
0r limit switches can be used :to reverse the motor at the
by the elastic action of spring 29a onto the top surface
of the boss 51 and is kept under pressure until the stop
member 31 is just opposite the recess of the boss 51
travel limits of the tender.
The lateral standards 1 and 2 of the machine frame 55 and can catch into the recess 31b. Due to the use of
the force-storing member, such as elastic member 29a, the
structure are connected with each other not only by
control switch 25 of the servicing unit can build up and
tubular carrier 4 but also by a bottom rail 2,0 (FIGS. l,
keep ready the necessary tensioning force required for
2), a horizontal carrier 21 for the tensioners 16 and an
rapid switching operation, before the travelling winding
upper tubular rail 22 which carries the individual sta
ltions 3. Mounted on the upper rail 22 is an arm 23 ex 60 unit has reached the ultimate stopping position. In con
trast to the machine according to application Serial No.
tending in a vertical plane. A supporting member 159
728,139 where a linking rod is entrained by crank 28
(IFIGS. 1, 2) serves for bracing the tubular carrier 4.
to move the stop pawl lever 30, according to the embodi
In FIG. 2, the supply coil 14 is shown by dot-and
ment of FIG. 2 of the present invention, a spring 26a
dash lines in the position occupied when the coil is being
unwound. The supply coil 14 is carried by a pivotally 65 is provided which pulls the levers 30 and 42 simul
taneously against control cam 32. The motion of crank
28 is thus transmitted through spring 29a to the lever 30
which imparts this motion to the stop member 31.
this position of thorn 67, a supply coil 14 arriving from
Linked to the control lever 36 is a driving tappet 40
above in the trough 15 is automatically speared upon
the thorn. Thereafter, a spring (not shown) automatical 70 (FIG. 2) for a knotting device 41. The dog 35 of cam
disc 32 cooperates with a projection 43 of control lever
ly returns the thorn 67 into the unwinding position. Lo
42 so that, during passage of dog 35, the lever 42 is
cated between the yarn tensioner 16 and the yarn-guiding
shifted counterclockwise about its pivot and then pushes
drum 11 is a yarn guard 17 which continuously tests the
a return tappet 45, in opposition to a pressure spring 26a,
operation for presence of the yarn F and which turns
clockwise to the position shown in solid lines in FIG. 2 75 against the return lever arm 18. When dog 35 passes
mounted thorn 67 which can be turned about its pivot so
as to be located in the end portion of a trough 15. In
3,061,216
5
6
beyond the projection 43, the control lever 42 returns to
its position illustrated in FIG. 2.
K
Schematically shown at 46 (FIG. 2) is a conveying
arm which is pivoted on the tender 5. It is intended that
arm 46 be of the usual suction type known in the art.
suction tube 39. This »air current sucks the free yarn end
of the take-up spool 13 into the tube 39. iPor this pur
pose, the take-up spool 13 is preferably turned in the re
verse direction by known means y(not illustrated).
During further rotation of c-am disc 32, the control
lever 36 ‘again turns back «in the clockwise direction, and
At the start of the yarn-end finding operation, the arm
the suction tube 39 of the yarn-end finder ‘device Iagain
46 turns from the uppermost position, shown by a dot
turns downwardly, thus entraining the seized yarn end
and-dash line, downward toward the yarn tensioner 16 in
from the take-up spool 13 into the immediate vicinity of
order to thereafter convey the yarn end, then located in
the tensioner 16, upwardly to the knotter 41. Such knot 10 the knotter 41. At the same time, the conveying arm
ting and conveying devices are known as such, and for
46 has passed from its uppermost (dotJand-das‘h) position
to the lowermost (full line) position 46 where it seizes
that reason are not shown and described herein in further
the yarn end coming from the supply coil 14. During
detail, since they form no part of the invention proper.
the next following return t-ravel in the 'upward `direction
The tender I5 has Ia suction conduit ‘52 whose lower end
of arm 46, the -latter yarn end is Ialso placed against the
sequentially communicates with lateral openings 50 of the
tubular carrier 4 as the tender 5 travels along the carrier.
knotter 41 which now ties both yarn ends together in ya
Each opening ‘50 (FIG. 2) is normally covered by `a lid
known manner.
49. As the tender approaches, the lid is turned yaway
In the meantime, the cam disc 32 lhas turned to the posi
tion where its `dog 35 presses 'against the projection 43
from the opening 50 so that the suction conduit 48 be
comes connected -with the suction `system of which the 20 of control lever 42 ‘and thus pushes the return t-appet 45
toward the left for a short interval of time. The tappet
carrier forms la part. Conversely, when the tender leaves
movement acts upon the lever arm 18 of the yarn guard
a winding station, the lid 49 is released ìand then auto
17 and resets the guard so that the winding station is
matically closes the suction inlet opening 5t). The suc
.ready for further operation. After the knotting -operation
tion conduit 52 provides vacuum pressure for the suction
‘has been satisfactorily performed, the winding station
tube 39 of the yarn-end finding device. îThis function of
continues the Winding-up of the take-up spool 13. I-f the
lid 49 is further illustrated and described in the above
mentioned copending application Serial No. 728,139.
The endless chain 8 has one of its chain members pro~
knotting operation has failed, then the yarn Iguard 17
does not remain in its lowerm-ost position Iand thus initiates
a repetition of the above~described servicing operation.
vided with an entrainer pin 54 (TFIG. 2) which projects
Immediately after the dog 35 has passed bey-ond pro
into fa vertically elongated slot ‘56 in the tender structure 30
and thereby entrains the tender to travel back iand yforth
jection 43, the stop pawl 30 enters into the notch 34 of
cam 32. This releases the latch 31 from the boss ’51,
along the tubular carrier 4. However, since the tender
and -the chain 8, kept under tension by the slip clutch 55,
5, whenever needed, is stopped by the latch 31 in front
entrains the tender 5 by means of the entrainer pin '54.
of an individual winding station, 'a slip clutch '55 is inter
posed between the driving shaft of lgear 7 and the driving 35 The tender 5 then travels to th-e next following 'winding
station where, if needed, the servicing operation is initiated
sprocket of the endless chain 8, so that the chain `8 is
and performed in the same manner as described Iabove.
temporarily arrested as long as the tender is stopped. ln
contrast thereto, the endless 'chain `9 rotates continuously
As mentioned above, in the event the yarn F breaks in
an individual winding station, the yarn guard 17 turns
about its sprockets and, as soon «as the tender 5 is stopped,
actuates a step-down transmission 57 whose rotation is 40 from the dot-and-dash line position to the full-line posi
tion shown in FIG. 2, and the lever 19, firmly joined with'
transmitted by la chain ‘58 and a spur >gear `59 through Ia
the guard 17, enters into the range «of the control switch
slip clutch "60 onto a shaft 61 which carries a worm 62
member 25. When the servicing unit 5 approaches a
driving the cam «disc 32.
station in which the yarn guard 17 is »thus deflected to the
When starting the operation of the multi-station wind
full-line position according to FIG. 2, the control switch
ing machine, the tender 5 yfirst travels from station to sta
25 is engaged by the yarn guard, and both switch 25 and
tion and, by means of »a switching `arm 25, detects whether
the yarn guard 17 in each station has turned into the
its shaft 27 are turned out of the normal position, thus also
fault-responsive position shown by full lines in FIG. 2,
turning the crank 28. It is essential to the present inven.
thus signalling that a knotting or coil-exchanging opera
tion that the crank 28 and the release `control lever 30
tion is needed. The fault-responsive movement of yarn 50 are connected by a spring 29a, as mentioned above.
guard 17 has the effect of turning its switch arm 19 into
According to another feature of the invention, best
the travelling range of the switch yarm or switching mem
illustrated in FIGS. 3 and 4, the entering end 31a of the
b-er 25 on the tender so that when the tender passes by,
stop member 31 is shaped conically where this end enters
either from the left or the right, the Iarm 19 turns the
into the recess 31b of the boss, whereby the precision of
switch `arm 2‘5 in one or the other direction. Such turn 55 the fixing operation is further improved. The boss 51,
ing movement of arm 25 is transmitted through shaft 27
as shown in FlG. 4, may be given an elongated shape in
to crank 28 which, irrespective of the ldirection of rotation,
both directions of travel so that, if the control switch 25
turns the pawl 30 and the latch 31 downward. Now,
is actuated su?liciently early, the frusto-conical end 31a
latch 31 enters into the center bore of boss '51 and arrests
of the stop member 31 can iirst glide on the top surface
the tender l5 in front of the winding station, while the 60 of the boss 51 and can catch into the recess 31b at the
operation of that station is also stopped. The step-down
moment when the servicing unit is accurately located in
transmission 57 is placed in rotation by the continuously
front of the winding station to be serviced. As a result,
rotating chain 9. Transmission 57 then yacts through
the stop member 31, before it reaches the recess 31b in
chain 58, spur gear '59, slip clutch `60, shaft 61, and worm
-612 to ldrive the cam disc 32 in the `direction identified 65 the arresting boss 51, places itself upon the top surface
of the boss 51 and glides with its end face on this top
in FIG. 2 by an arrow. The control lever 36 can now
surface. Only when the st-op member 31 is accurately
drop into the cam groove 33 and entrain the spur gear
located opposite the recess 31b can the stop member snap
segment 37 counterclockwise, thus rotating the pinion 38
into the recess whose shape is matched to that of the
clockwise. The suction tube '39 fastened to pinion 3‘8
now turns from its lowermost (not illustrated) position 70 stop member. This operation is independent of whether
the servicing unit arrives from the right or the left. Such
upwardlly. Since »at this time the suction channel `4S of
operation has essentially the effect of latching the servicing
conduit 52 is in communication with the opening S0 of
the tubular carrier 4 at the location lof lthe winding sta
unit at the particular winding station and secures an ac
tionbeing served by the tender, the vacuum is effective
curate positioning of the individual cooperating devices
to produce a current of suction air `at the nozzle end of 75 I of the winding station and the servicing unit respectively,
3,061,216
7
such as the control devices as Well as the knotter and the
yarn guard 17 is the armature 123 of another electro
magnet 124. The armature 123 is attracted by the elec
yam-seeking means of the servicing unit.
It is preferable to make the active working stroke of
the releasing member proportionately greater than the
active Working stroke of the stop member. For example,
tromagnet 124 only after the shorting of magnet 117 has
caused the electric current to exceed a given minimum
value.
the component parts may be so dimensioned that the
servicing unit is already stopped at a moment when the
release member and the stop member have both performed
Since this takes place at the end of the cycle of
servicing operation, namely by the closing of contacts 121
and 122, the yarn guard 17 is moved back into operative
position by the electromagnet 124 only at or near the
one-half of their active stroke, whereas the release and
end of the cycle. This return movement has the effect of
start of the servicing operation is effected when three 10 separating the contacts 114, 115; and only a repeated yarn
quarters of the work stroke is completed. To accom
break can again cause closing of the contacts 114, 115
plish this end, it is essential that the cooperating parts,
in order to again commence a cycle of servicing opera
particularly the pawl or release control lever 30, the recess
tions.
34 in control cam 32 cooperating with release control
The servicing means of the travelling servicing unit can
lever 30, the stop member 31 and the recess 31b to be 15 be so designed that the connecting member serves simul
engaged by the stop member, are so dimensioned that the
taneously as arresting member 31. This can be done for
withdrawal of the control lever 30 out of the cam recess
example by designing the arresting (stop) member 31 as
34 requires a longer operating stroke than is required for
a rod 29 which is linked to the releasing member 30.
the stop member 31 to enter and latch in the recess 31h.
The free end 31a of the rod engages a recess 31b of a
The Working stroke of the releasing member 30l is 20 structural element rigidly joined with the machine frame
therefore made larger than the depth of the cam recess 34
and must be at least as large as the working stroke neces
structure or the winding station. The release member 30
is preferably designed as a latch pawl and is provided
sary for the releasing operation. The working stroke of
the stop member 31 is made larger than the distance b
with a shoulder which can enter into a cam shoulder of
(FIG. 3) required for stopping and 1atching the servicing
a rotating disc connected with a device for controlling
25 the servicing means of the travelling unit.
unit. If the active portion b ofthe stroke is made approxi
While the íirst-mentioned design affords a somewhat
mately one-half as large as the length of the working
slower performance of increased reliability, the second
stroke a (FIG. 3), then the stopping and latching of the
design having the elastic member or other connecting
servicing unit at the winding station takes place earlier
member located between the release member 30 and the
30 stop member 31 operates more rapidly in that the con
than the release of the servicing operations of the unit.
It is further preferable to form the latching end 31a
trol member Will already be moving at a time during
of the stop member 31 and the recess 31b in the boss
which the unit is still approaching the stoppacfe point. so
51 as conical shapes. Such parts -ñt accurately into each
that when the unit arrives at the accurate stopping point,
other and thus always secure an accurate arresting of the
a servicing operation, if necessary, can commence im
servicing unit at the winding station. Other mating parts
of tapering shape, for example tooth-shaped members or
trapezoidal members are applicable for the same purpose.
In the embodiment according to FIGS. 5 and 6, a set
35
mediately.
In the embodiment according to FIG. 7, the connecting
member or elastic spring 29a described above with relier
ence to FIG. 2 is substituted by a rigid link 29 between
of contacts 110, 111 is mounted on the Winding station,
crank 28 and control lever 30, in combination with an
and a cooperating set of contacts 112, 113 is mounted on 40 elastic or biasing connection 131a between the control
the travelling servicing unit 5. The two sets of con
lever 30 and the stop member 31. To form this elastic
tacts form part of an actuating device for stop member
connection, the rod-shaped stop member 31 is linked to the
31 and are in respective engagement with each other only
control lever 30 by having the upper end of the stop
when the servicing unit is in proper position relative to
member 31 displaceable in an elongated slot 30a of lever
the winding station. When the yarn F breaks, the yarn
30. The stop member 31 is biased by a spring 1315:
guard 17 turns from the full-line position to the dot-and
which abuts at one end against the control lever and at
dash position 17 ’ and actuates a pair of contacts 114, 115,
the other end against a shoulder ring or collar 13lb
thus closing an electric circuit through the contact sets
fastened to the stop member 31. When the crank 2S
110, 111 and 112, 113. The circuit is energized from a
turns in one or the other direction, then the control lever
current source 116 and comprises a solenoid or electro
magnet 117. The armature 118 of magnet 117 acts upon
the control lever 30, which, as described above, releases
the control cam 32 for performing a cycle of servicing
operations and which also causes the servicing unit to be
arrested by means of the stop member 31. In this case,
30 is moved downwardly and the spring 13151 is stressed,
tending to force rod 31 downward. At the moment when
the stop member 31 is located above and aligned with
the recess 31b, the stop member 31 catches into recess
31b and thus arrests the servicing unit 5 in accurate posi
tion relative to the winding station. The control lever
the magnet 117 can act in the same manner as the above
3G is also subjected to the action of a return spring 26a
described spring 29a, namely, as an elastic member, that
(not shown in FIG. 7) in a manner similar to that de
is, when the above-mentioned electric circuit is closed.
scribed above With reference to FIG. 2.
the stop member 31 is under the effect of a force which
Coil winding machines of the type here dealt with are
tends to make the stop member catch into the recess 31b 00
usually provided with a supply of suction air for the pur
as soon as the stop member and recess are accurately lo
cated opposite each other.
While in the embodiment of FIG. 5, the yarn guard
17 is returned to its original position by mechanical
means, the embodiment shown in FIG. 6 is further
modiñed for returning the yarn guard electrically. When
pose of removing lint, and for operating the yarn-seeking
and conveying devices and the like. In the embodiment
according to FIG. 8, the available supply of negative air
pressure from the lint suction channel is utilized for the
purpose of the present invention to operate a device for
the yarn guard 17 deilects as a result of yarn breakage,
accurately positioning the servicing unit. The negative
and the contact pair 114, 115 closes the circuit of mag
net 117 thus commencing the servicing cycle, the arma
ture 11S of magnet 117 pulls the release control lever
a duct 104 and a valve 101 with a cylinder 103 contain
30 out of the cam recess 34. The control cam 32 has a
air pressure available in a conduit 48, is connected through
ing a piston 102. The valve 101 is controlled by the
control switch 25 of the servicing unit. The piston 102
cam projection 120 which, near the termination of the
is mounted on a piston rod which serves as stop member
iirst cycle of servicing operations, depresses the control
31.
When the control switch 25 is actuated to initiate
an operation of the servicing unit, irrespective of whether
lever 30 and closes a contact pair 121, 122 which short
circuits the winding of the magnet 117. Linked to the 75 the switch is turned clockwise or counterclockwise, then
the suction air in channel 48 acting through duct 104 and
valve 101 imposes negative pressure upon the bottom side
of piston 102 so that this piston moves downward. At
the moment when> the stop member 31 is accurately
aligned opposite the recess 31b, it catches into the recess
and arrests the servicing unit in accurate position while
simultaneously entraining the control lever 30 downward
ly.
Due to the release effected by the control member
30, the servicing devices of the unit now commence a
cycle of servicing operations because the latching pawl
of control lever 30 has passed out of the cam recess 34
and now permits the control cam 31 to rotate, thus caus
the unit reaches said individual station, drive means cori
nected with said servicing unit for reciprocating it along
said travel path, a rigid carrier structure extending along
said travel path, said servicing unit engaging said carrier
structure to run along said structure, said carrier struc
ture lhaving respective stop means located at said respec
tive winding stations, la sto-p member operable to lbe actu
ated for arresting said unit during said servicing operation,
said stop member being latchingly engageable with said
carrier structure only at said respective stop means which
are so located as to arrest said unit in a given accurately
coactive position in front of one of said respective sta
tions, and resilient means connecting said stop member
in_g the servicing means to operate. The control lever 30
with said release control member 4for actuating said stop
in this embodiment is under the action of a helical corn
pression spring 26]; which tends to bias lever 30 upwardly 15 member when said start-stop mehanism is released yfor a
cycle of servicing operations.
against cam disc 32.
2. A yarn-coil winding machine, comprising a multi
An embodiment of the type described above with refer
plicity of serially located winding stations, a mobile serv
ence to FIG. 2 is particularly advantageous if it is in
icing unit having »a travel path lalong said stations and
tended to assure that the servicing cycle of the unit 5 can
having automatic servicing means ‘for remedying absence
commence only after the servicing unit is reliably arrested
of yarn along said travel path, a service control device
and securely latched in accurate position opposite a Wind- '
disposed on said unit and having a cam mechanism linked
ing station by the stop member 31. However, if it is
with said servicing means for controlling the latter to per
preferred to initiate the servicing cycle of the unit 5 some
form a single cycle of operation upon release of said
what ahead of the arresting and latching operation, that
mechanism, a release control member, a switch arm dis
is, before the servicing unit 5 has fully reached the ac
placeably mounted on said unit and connected with said
curate position in which the stop member 31 fixes the
release control member for moving the ‘latter to an oper
unit 5 relative to the winding station, then an embodiment
ation-initiating position, said -release control member hav
accord-ing to FIG. 7 is particularly of advantage. The
ing a latch pawl engageable with said cam for normally
latter embodiment requires less operating time because,
for example, the surface of cam disc 32 of the servicing 30 stopping said cam, each of said winding stations having
sensing means responsive to absence of yarn and engage
unit has already passed beyond the inevitable idling dis
-able with said switch arm for moving said release control
tance at the moment when the servicing unit 5 is arrested
member to said operation-initiating position only when
and latched relative to the Winding station. Also prior
said sensing means of an individual winding station is in
to such latching operation, any operations to be per
formed by coaction of the winding station and the servic 35 responded condition whereby a cycle of servicing oper
ations is initiated as the unit reaches said indivdual sta
ing unit 5 can be performed in which an accurate location
tion, drive means connected with said servicing unit for
of the unit relative to the winding station is not absolutely
lreciprocating it along said travel path, a rigid carrier struc
necessary. However, the proper latching of the stop
ture extending along said travel path, said servicing unit
member '31 is nevertheless secured in the embodiment of
FIG.` S with respect to those operations in which an ac 40 engaging said carrier structure to run along said structure,
said vcarrier structure having respective sto-p means lo
curate positioning of the servicing unit relative to the
cated at said respective winding stations, a stop member
winding station is essential; and this is eifected irrespective
operable to be actuated -for larresting said unit during said
of >whether the servicing unit 5 approaches the station
servicing operation, said stop -member being latchingly
from the right or the left.
engageable with said carrier structure only at said respec
rThe term “resilient means” is employed herein to define
tive stop means which are so located as to arrest said unit
both spring type as well as pneumatic types of yieldable
in a given accurately coactive position in front of one
means capable of deformation and substantially resuming
of said respective stations, and resilient linking means
its original shape without permanent deformation.
connecting said stop member with said pawl for actuating
It will be obvious to those skilled in the art, upon study
ing this disclosure, that `our invention permits of various 50 said stop member when said pawl releases said cam mecha
nism for a cycle of servicing operations.
modifications and hence may be embodied in devices
3. A yarn-coil winding machine, comprising a multi
other than those particularly illustrated and described
plicity of serially located winding stations, a mobile serv->
herein, without departing from the essence of the inven
lcing unit having a travel path along said stations and
tion and within the scope of the claims annexed hereto.
55 having automatic servicing means for remedying absence
We claim:
of yarn along said travel path, a service control device
l. A yarn-coil wind-ing machine, comprising a multi
disposed on said unit and having a start-stop mechanism
plicity of serially located Winding stations, a mobile serv
linked with said servicing means for controlling the- latter
icing unit having a travel ‘path along said stations and
to perform a single cycle of operation upon release of
having automatic servicing means for remedying absence
of yarn along said travel path, a service control device 60 said mechanism, latch means normally stopping said
mechanism and having a release control member, a
disposed on said unit and having a start-stop mechanism
switching >member displaceably mounted on said unit and
linked with said servicing means for controlling the latter
connected with said release control member for moving
to perform a single cycle of operation upon release of
the latter to an operation-initiating position, each of said
said mechanism, latch means normally stopping said
mechanism and having a release control member, a switch 65 ywinding stations having sensing means responsive to ab
sence of yarn and engageable with said switching member
ing member displaceably mounted on said unit and con
-Sor moving said release control member to said operation
nected with said release control -member for moving the
initiating position only when said sensing means of an
latter to an operation-initiating position, each of said
winding stations having sensing means responsive to ab 70 individual winding station is in responded condition
whereby a cycle of servicing operations is initiated as the
sence o-f yarn and engagea-ble with said switching member
unit reaches said individual station, drive means con
for moving said release control member t-o said openation
nected with said servicing unit for reciprocating it along
initiating position only when said sensing means of anI
said travel path, a 'rigid carrier structure extending along
individual winding station is in responded condition
whereby a cycle of servicing operations is initiated as 75 said travel path, said servicing unit engaging said carrier
3,061,216
11
12
structure to run along said structure, said carrier struc
ture having respective stop means located at said respec
before and after each cycle of servicing operations, a
rigid carrier structure extending along said travel path,
tive winding stations, a stop member operable to be
actuated for `arresting said unit during said servicing
said servicing unit engaging said carrier structure to run
along said structure, said carrier structure having re
operation, said stop member being latchingly engageable
spective stop means located at said respective winding
with said carrier structure only at said respective stop
stations, a stop member operable to be actuated for ar
means which are so located as to arrest said unit in a
resting said unit during said servicing operation, said
stop member being resiliently linked with said release
given accurately coactive position in front of one of said
respective stations, and resilient force-storing means link
control member so as to be latchingly engageable with
ing said stop member with said switching member for 10 said carrier structure only at said respective stop means
actuating said stop member simultaneously with said start
which are so located as to arrest said unit in a given
stop mechanism being released `for a cycle of servicing
accurately coactive position in front of one of said respec
operations.
tive stations, and means operably connected to said re
4. A yarn-coil winding machine, comprising a multi
lease control member and said stop member for con
plicity of serially located winding stations, a mobile serv 15 trolling said start-stop mechanism to commence operat
icing unit having a travel path along said stations and
ing only when said servicing unit is arrested relative to
having automatic servicing means for remedying ab
said winding station, said last-named means being op
sence of yarn along said travel path, a service control
erably connected with said start-stop mechanism for ter
device disposed on said unit and having a start-stop mech
minating the stoppage of the servicing unit travel only
anism linked with said servicing means for controlling
after said automatic servicing means of said unit have
the latter to perform a single cycle of operation upon
completed said cycle of operations.
release of said mechanism, latch means normally stop
6. A yarn-coil winding machine, comprising a multi
ping said mechanism and having a release control mem
plicity of serially located winding stations, a mobile
ber, a switching member mounted on said unit and con
servicing unit having a travel path along said stations and
nected with said release control member for moving the 25 having automatic servicing means for remedying absence
latter to an operation-initiating position, each of said
of yarn along said travel path, a service control device
winding stations having sensing means responsive to ab
disposed on said unit and having a cam mechanism linked
sence of yarn and engageable with said switching mem
with said servicing means for controlling the latter to
ber for moving said release control member to said opera
perform a single cycle of operation upon release of said
tion-initiating position only when said sensing means of
mechanism, a release control member, a switch arm dis
an individual winding station is in responded condition
placeably mounted on said unit and connected with said
whereby a cycle of servicing operations is initiated as the
release control member for moving the latter to an opera
unit «reaches said individual station, drive means con
tion-initiating position, said release control member hav
nected with said servicing unit `for reciprocating it along
ing a latch pawl engageable with said cam for normally
said travel path, a rigid carrier structure extending along 35 stopping said cam, each of said winding stations having
said travel path, said servicing unit engaging said carrier
sensing means responsive to absence of yarn and engage
structure to run along said structure, said carrier struc
able with said switching member for moving the release
ture having respective stop means located at said respec
control member to said operation-initiating position only
tive winding stations, a stop member operable to be actu
when said sensing means of an individual winding station
ated yfor arresting said unit `during said servicing opera 40 is in responded condition whereby a cycle of servicing
tion, said stop member being resiliently linked with said
operations in initiated as the unit reaches said individual
release control member so as to be latchingly engageable
station, drive means connected with said servicing unit
with said carrier structure only at said respective stop
for reciprocating it along said travel path, a rigid carrier
means which are so located as to arrest said unit in a
structure extending along said travel path, said servicing
given accurately coactive position in front of one of said
unit engaging said carrier structure to run along said
respective stations, and means operably connected to said
structure, said carrier structure having respective stop
release control member and said stop member for con
means located at said respective `winding stations, a stop
trolling said start-stop mechanism to commence operat
member operable to be actuated for arresting said unit
ing only when said servicing unit is arrested relative to
during said servicing operation, said stop member being
said winding station.
latchingly engageable with said carrier structure only at
5. A yarn-coil winding machine, a comprising a multi
said respective stop means which are so located as to
plicity of serially located winding stations, a mobile servic
arrest said unit in a given accurately coactive position in
ing unit having a travel path along said stations and hav
front of one of said respective stations, and resilient link
ing automatic servicing means for remedying absence of
ing means connecting said stop member with said pawl
yarn along said travel path, a service control device dis
for actuating said stop member when said pawl releases
posed on said unit and having a start-stop mechanism
said cam mechanism for a cycle of servicing operations,
linked with said servicing means for controlling the latter
the operating stroke of said latch pawl in relation to said
to perform a single cycle of operation upon release of
cam being relatively larger than the active operating stroke
said mechanism, latch means normally stopping said
of said stop member in relation to said stop means, the
mechanism and having a release control member, a 60 relative dimensions of said latch pawl, of said cam en
switching member mounted on said unit and connected
gageable with said latch pawl, of said stop member and
with said release control member for moving the latter
to an operation-initiating position, each of said winding
stations having sensing means responsive to absence of
yarn and engageable with said switching member for
moving said release control member to said operation
initiating position only when said sensing means of an
individual winding station is in responded condition
whereby a cycle of servicing operations is initiated as the
unit reaches said individual station, drive means connect
ed with said servicing unit for reciprocating it along said
travel path, said start-stop mechanism being operably
of said stop means engageable by said stop member being
adapted so that the withdrawal of said latch pawl from
said cam requires a longer operating stroke than is re
quired for latching engagement of said stop member with
said stop means, whereby the travel of said servicing unit
is arrested after only a portion of said operating stroke
of said latch pawl is completed and said cycle of servicing
operations is initiated only after an additional portion of
the working stroke of said latch pawl is completed.
7. A yarn-coil winding machine, comprising a multi
plicity of serially located winding stations, a mobile
connected to said drive means for respectively stopping
servicing unit having a travel path along said stations
and initiating the travel of said unit along said travel path 75 and having automatic servicing means for remedying ab
I3
sence of yarn along- said travel path, a service control
device disposed on said lunit and having la start-stop
mechanism linked with said servicing means for con
trolling the latter to per-form a single cycle of operation
upon release of said mechanism, latch means normally`
stopping said mechanism and having a release control
member provided with a switch arm displaceably mounted
lli
servicing unit having a travel path along said stations
and having automatic servicing means `for remedying
absence of yarn along said travel path, a service control
device disposed on said unit and having a start-stop
mechanism linked with said servicing means lfor con
trolling the latter to perform a single-cycle of operation
upon release of said mechanism, latch means normally
stopping said mechanism and having a release control
on said unit, each of said winding stations having sens
member provided with a switch arm displaceably mount
ing means responsive to absence of yarn and engageable
with said switch arm «to displace said release control 10 ed on said unit, each of said winding `stations having
sensing means responsive to absence of yarn and en
member only when said sensing means of an individual
gageable with said switch arm to displace said release
winding station is in responded condition whereby a
control member only when said sensing means of an
cycle of servicing operations is initiated as the unit reaches
individual winding `station is in responded condition
said individual stattion, drive means connected with said
whereby a cycle of servicing operations is initiated as
servicing unit for reciprocating it along said travel path,
the unit reaches said individual station, drive means con
a rigid carrier structure extending along said travel path,
neoted with said servicing unit `for reciprocating it along
said servicing unit engaging said carrier structure to run
said travel path, a rigid carrier structure extending along
alongr said structure, said carrier structure having re
said travel path, said servicing uni-t engaging said carrier
spective stop means forming a tapered recess located at
structure to run along said structure, said carrier struc
said respective Winding stations, a stop member mate
ture having respective stop means forming a tapered
able with said recess and operable to be actuated for
arresting said unit during said servicing operation, said . recess located at said respective winding stations, a tapered
stop member mateable with said recess and operable to
stop member being latchingly engageable with said car
be actuated for arresting said unit during said servicing
rier structure only at said respective stop means, said
said unit in a given accurately coactive position in front
operation, said stop member being latchingly engage
able With said carrier structure only at said respective stop
of one of said respective stations, and resilient means
means, said recesses in'said stop means being so located
recesses in said stop» means being so located as to arrest
as to arrest said unit in a ‘given accurately coactive po
connecting said stop member with said release control
sition in front of one of said respectivev stations, andmember -for actuating said stop member when said start
stop mechanism is released for a cycle of servicing opera 30 resilient mechanical means operably connecting said stop
member and said release control member for actuating
tions.
said stop member toward said stop means.
8. A yarn-coil winding machine, comprising a multi
10. A yarn-coil winding machine, comprising a multi
plicity of serially located winding stations, a mobile
plicity of serially located `winding stations, a mobile serv
servicing unit having a travel path along said stations
icing unit having a travel path along said stations and
and having automatic servicing means for remedying ab
having automatic servicing means for remedying absence
sence of yarn along said travel path, a service control
of yarn along said travel path, a service control device
device disposed on said unit and having a start-stop
mechanism linked with said servicing means for con
disposed on said unit and having -a start-stop mechanism
linked with said servicing means for controlling the latter
trolling the latter to perform a single cycle of operation
upon release of said mechanism, latch means normally 40 to perform -a single cycle of operation upon release of*
said mechanism, latch means normally stopping said
stopping said mechanism and having a release control
mechanism and having a release control member pro-member provided with a switch arm displaceably mounted
vided with a switch arm displaceably mounted on said
on said unit, each of said Winding stations having sensing
unit, each of said winding stations having sensing means
means responsive to absence of yarn and engageable with
responsive to absence of yarn and engageable with said
said switch arm to displace said release control member
switch arm to displace said release control member only
only when said sensing means of .an individual winding
when said sensing means of an individual winding station
station is in responded condition whereby a cycle of
is in responded condition whereby a cycle of servicing
servicing operations is initiated as the unit reaches said
operations is initiated as the unit reaches said individual
individual station, drive means connected with said serv
icing unit for reciprocating it along said travel path, a 50 station, drive means connected ‘wi-th said servicing unit
for reciprocating it along said travel path, a rigid carrier
rigid carrier> `structure extending along said travel path,
structure extending along said travel path, said servicingsaid servicing unit engaging said carrier structure to run
unit engaging said carrier structure to run along saidv
along said structure, said carrier structure having re
spective stop means having a flat surface and lforming a
structure, said carrier structure having respective stop
conically tapered recess therein located at said respective 55 means forming a tapered recess located at said respec
tive winding stations, a tapered stop member mateable
winding stations, a stop member having a `frusto-conical
with said recesses and operable to be actuated for arrest
end portion engageable with said tlat surface and mate
ing said unit during said servicing operation, said stop
able with said recess for arresting said unit during said
member being latchingly engageable with said carrier
servicing operation when said end portion is in said
recess, said stop member being latchingly engageable with 60 structure only at said respective stop means, said re
cesses in said stop means Ibeing so located as to arrest
said carrier structure only at said respective stop means,
said unit in a given accurately coactive position in front
said recesses in said stopl means being so located as to
of one of said respective stations, and pneumatic means
arrest said unit in a given accurately coactive position
operably connecting said stop member with said release
in front of one of said respective stations, and resilient
means connecting said stop member with said release 65 control member for actuating said stop member toward
said stop means.
control member for actuating said stop member to engage
l1. A yarn-coil winding machine, comprising a multi
said stop means when said start-stop mechanism is -re
plicity of serially located winding stations, a mobile serv
leased »for a cycle of servicing operations, whereby the
servicing cycle is partially released for operation when
icing unit having a travel path along said stations‘and
winding station.
linked with said servicing means for controlling the latter
`9. A yarn-coil winding machine, comprising a mul
tiplicity of serially located winding, stations, a mobile
said mechanism, latch means normally Y stopping said
said end portion of `said stop member engages said flat 70 having automatic servicing means for remedying absence
of yarn along said travel path, a service control device
surface and before said end portion latchingly engages
disposed on said unit and having a start-stop mechanism
said recess to arrest said servicing unit relative to the
to perform a single cycle of operation upon release of
15
mechanism and having a release control member pro
condition whereby a cycle of servicing operations is
vided with a switch arm displaceably mounted on said
initiated as the unit reaches said individual station, drive
means connected with said servicing unit for recipro
unit, each of said winding stations having sensing means
responsive to absence of yarn and engageable with said
switch arm to displace said release control member only
cating it along said travel path, a rigid carrier struc
ture extending along said travel path, said servicing
when said sensing means of an individual winding station
unit engaging said carrier structure to run along said
is in responded condition whereby a cycle of servicing
structure, said carrier Structure having respective stop
operations is initiated as the unit reaches said individual
station, drive means connected with said servicing unit
for reciprocating it along said travel path, a rigid carrier
structure extending along said travel path, said servicing
unit engaging said carrier structure to run along said
structure, said carrier structure having respective stop
means located at said respective winding stations, a stop
member operable to be actuated for arresting said unit
during said servicing operation, said stop member being
la-tchingly engageable Iwith said carrier structure only at
said respective stop means which are so located as to
arrest said unit in a given accurately coactive position
in `front of one of said respective stations, and resilient
means linking said stop member with said pawl, and
operative means connecting said stop member with said
pawl for actuating a working stroke of said pawl relative
to said cam and for actuating a working stroke of said
stop member relative to said stop means.
14. A yarn coil-windin-g machine, comprising a multi
plicity of serially located winding stations, a mobile serv
icing unit having a travel path along said stations and
having automatic servicing means for remedying absence
of yarn along said travel path, a service control device
means forming a tapered recess located at said respective
winding stations, a tapered stop member mateable withA
said recess and operable to be actuated for arresting said
unit during said servicing operation, said stop member
being latchingly engageable with said carrier structure
only at said respective stop means, said recesses in said
stop means being so located as to arrest said unit in a
given accurately coactive position in front of one of said
respective stations, an'd huid-operated means connecting
said stop member with said release control mem-ber for
actuating said stop member toward said stop means.
12. A yarn-coil winding machine, comprising a multi
plicity of serially located winding stations, a mobile serv
icing unit having a travel path along said stations and
having automatic servicing means for remedying absence
of yarn along said travel path, a service control device dis
posed on said unit 4and having a start-stop mechanism
linked with said servicing means for controlling the latter
to perform a single cycle of operation upon release of
said mechanism, latch means normally stopping said
mechanism and having a release control device mounted
on said unit, each of said winding stations having sensing
means responsive to absence of yarn and connected for
actuating said release control device of said servicing unit
only when said sensing means of an individual winding
station is in responded condition whereby a cycle of serv
icing operations is initiated as the unit reaches said in
25 disposed on said unit and having a cam mechanism linked
with said servicing means `for controlling the latter to
perform a single cycle of operation upon release of said
mechanism, a release control device comprising a latch
pawl engageable with said cam for normally stopping said
30 cam, said mobile servicing unit having a switch member
operatively connected with said release control device,
yarn -sensing means responsive to absence of yarn at a
respective winding station, said switch member being en
gageable with said sensing means only when said sensing
35 means of an individual station is in responded condition
whereby a cycle of servicing operations is initiated as the
unit reaches said individual station, drive means con
40
dividual station, drive means connected with said servic
ing unit for reciprocating it along said travel path, a rigid
carrier structure extending along said travel path, said
servicing unit engaging said carrier structure to run along
said structure, said carrier structure having respective
nected with said servicing unit for reciprocating lit along
said travel path, a rigid carrier structure extending along
said travel path, said servicing unit engaging said carrier
structure to run along said structure, :said carrier struc
_ ture having respective stop means located at said re
spective winding stations, a stop member operable to be
stop means forming a tapered recess located at said re
actuated for arresting said unit during said servicing
operation, said stop member being latchingly engageable
with said carrier structure only -at said respective stop
spective winding stations, a tapered stop member mate
means which are so located as to arrest said unit in a
able with said recess and operable to be actuated for
arresting said unit during said servicing operation, said
stop member being latchingly engageable with said carrier '
structure only at said respective stop means, said recesses
in said stop means being so located as to arrest said unit
in a given accurately coactive position in front of one of
said respective stations, and electrical means operably
connecting said sensing means ywith said release control
device for actuating said stop member toward said stop
means.
given accurately coactive position in front of one of
said respective stations, and resilient Iforce-storing means
disposed on said unit for urging said latch pawl toward
said cam.
l5. A yarn-coil winding machine, comprising a multi
plicity of serially located winding stations, a mobile serv
icing unit having a travel path along said stations and
having automatic servicing means for remedying absence
of yarn along said travel path, a service control device
disposed on said unit and having a cam mechanism linked
with said servicing means for controlling the latter to per
13. A yarn-coil winding machine, comprising a mul
form a single cycle of operation upon release of said
tiplicity of serially located winding stations, a mobile
servicing uni-t having a travel path along said stations 60 mechanism, a release control device comprising a latch
pawl engageable with said cam for normally stopping
and having automatic servicing means for remedying
said cam, each of said winding stations having sensing
absence of yarn along said Itravel path, a service control
device disposed on said unit and having a cam mecha
means responsive to yarn failure and engageable with
nism linked with said servicing means for controlling
the latter to perform a single cycle of operation upon re
lease of said mechanism, a release control member, a
is in responded condition whereby a cycle of servicing
switch arm displaceably mounted on said unit and con
nected with said release control member for moving the
latter to an operation-initiating position, -said release
control member having a latch pawl engageable with said
cam yfor normally stopping said cam, each of said wind
ing stations having sensing means responsive to absence
of yarn and engageable with said switch arm to displace
said release control member only when said sensing
means of an individual winding station »is in responded 75
said release control device of said servicing unit only
when said sensing means of an individual winding station
operations is initiated as the unit reaches said individual
station, ydrive means connected with said servicing unit
for reciprocating it along said travel path, a rigid car-v
rier »structure extending along said travel path, said serv
icing unit engaging said carrier structure to run along said
structure, said carrier structure having respective stop
means located at said respective winding stations, a stop
member operable to be »actuated for arresting said unit
during said servicing operation, said stop member being
s,oa1,2 16
17
18
latchingly engageable with said carrier structure only at
structure only at said respective stop means, the latter
said respective stop means which are so located as to
being so located as to arrest said unit in said prede
arrest said unit in a given accurately coactive position in
front of one of said respective stations, and connecting
means operatively linked to said stop member «and to said
termined exact position, and means connecting said stop
member with said release control device for actuating said
stop member when said release control device is moved to
said active condition, said actuating means being in co
operating connectiony with said yarn sensing means and
pawl to inhibit complete actuation of said release control
device prior to the actuation of said stop member.
16. A yarn-coil winding machine, comprising a multi
operative to disengage said stop member from said stop
means and thus to release said servicing unit relative to
plicity of serially located Winding stations, a mobile
servicing unit having a travel path along said stations and 10 the Winding station when said yarn sensing member is
having automatic servicing means for remedying absence
in a non-responded condition and prior to the release actu
ation of said release control device initiating another cycle
of yarn along said travel path, a service control device
disposed on said uni-t and having a start-stop mechanism
linked with said servicing means for controlling the latter
to perform a single cycle of operation upon release of said
mechanism, latch means normally stopping said mecha
nism and having a release control device provided with a
switch arm displaceably mounted on said unit, each of
said Winding stations having sensing means responsive to
of said servicing means.
17. In a yarn-coil Winding machine provided with a
multiplicity of serially located winding stations and with
a servicing unit for automatically servicing a plurality of
the winding stations, wherein said servicing unit and re
spective Winding stations are mutually displaceable, said
machine being equipped with release control means in
yarn failure and engageable with said switch arm to dis
place said release control device into an active condition
only when said sensing means of an individual Winding
cluding a member displaceably mounted on said unit for
station is in responded condition whereby a cycle of
servicing operations is initiated as the unit reaches said in
dividual station, drive means connected With saidservicing 25
unit for reciprocating it :along said tra'vel path, a rigid_
carrier structure extending along said travel path, said
servicing unit engaging said carrier structure to run
along said structure, said carrier structure having re
spective stop means located at said respective Winding 30
stations, a stop member operable to be actuated for arrest
ing said unit in a predetermined exact position relative to
initiate a cycle of servicing operations; means for arresting
said unit in a predetermined exact position in relation to
said one winding station, comprising stop means located
at said one station, a stop member operable to be actuated
for arresting said unit releative to said one station at said
said individual station during said servicing operation, said
stop member being latchingly engageable With said carrier
movement into an active condition upon absence of yarn
at an individual one of said Winding stations so as to
exact position during the automatic servicing of said
station, and resilient means connecting said stop mem~
ber with said release control member for actuating said
stop member when said release control means is moved
to said active condition.
No references cited.
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