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Jan. 7, 1947
‘
'
H, ME|ER
2,413,881
SEPARATING'DEVICE FOR LEASED WARP THREADS IN WEAVING-PREPARING MACHINES
Filed April .5, 1946
' 2 Sheets-Shéet 1
Jan. 7, 1947.
H. MEIER
' 2,413,331
SEPARATING DEVICE FOR LEASED WARP THREADS IN WEAVING-PREPARING MACHINES
Filed April 3, 1946
F6. 6
2 Sheets-Sheet 2
2,413,881
Patented Jan. 7, 1,947
UNITED STATES ‘ PATENT OFFICE
THREADS IN- WEAVING-PREPARING, MA-i
CHINES
Heinrich Meier, U'ster. Switzerland, assignor" to
Zellweger'A. G. Apparate- und Maschinen--~
fabriken-Uster, U'ster,. Switzerland
Application. April 3, 1946,. SerialNo, 659,369
In Switzerland April 12,1945
(Cl; 28-43)
8” Claims.
,
'
1
My present invention relates to- a device for
separating leased warp threads‘ in weaving-pre
paring machines, in which, as each foremost
thread is separated off, the next following thread
in the series of warp threads. is heldback.
In contradistinction. to known devices of this
kind, the present device has a separating body
capable of rocking to and fro about an axis
with two separating ?ngers disposed opposite one
Fig. 6 shows the separating body viewed at
right angles to Fig. 4 obliquely from the left, and
Figs. 7 and 8 and Figs; 9 and 10 show'the sepa
rating body in front elevation and as seen from
below in the angular positions corresponding to
Figs. 2 and 3.
The separating body is furnished with a sub- -
stantially circular, ?at disc I with a central driv
' ing shaft 2 which at one end is formed into a
thickened, cylindrical peg 3 (Fig. 5‘) adjoining the
another and with each of which a depression for 10 front side‘of the disc l and terminates in a conical
the reception, of a warp thread to be separated
point 4. The separating body by means of the
o? is associatedv on the front: side of the separat
shaft 2-, is borne for rotation in a bearing 5 which
ing body, a separating arm in the form of a double
is mounted on a carriage, not shown, which is
wedge being disposed between the two separating
slidably guided and is provided with a feeler.
?ngers; the whole in such arrangement that,’ on 15 Thisfeeler so co-operates, in a known manner,
the separating body turning in one direction, the
with the warp threads to be separated, that, when
foremost warp thread isjcaught by the separating
the feeler is performing its proper feeling motion,
arm, being guided over, one of the wedge surfaces
the drive of the said carriage is temporarily out
of. the latter behind the separating ?nger‘remote
in, and. the latter in consequence performs a step
20
from this surface and being, released by the other
by~step travelling motion, while the drive of the
separating ?nger, whilst, on the separating body
separating body is operating. At the other end
turning in the other direction, the next following
of the shaft 2, a fork-shaped operating lever B
thread in the series of warp threads is caught
by the separating arm, being, guided over the
second wedge surface of the latter behind the
separating ?nger remote from this surface and
is ?xed, the prongs of which engage on both sides
of‘ a driving bar not shown‘, by which, when the
separating device is in operation, the driving lever
5 is alternately rocked out of the position shown
in Fig. _4 in full lines into the position indicated
in chain-dotted lines and back again; the shaft
being released by the second separating ?nger.
This permits of separating oli . each warp
thread reliably without injury by means of only 30 2 and the disc I thus being turned to and fro
a single" working element; formed by the separate
about their axis in a corresponding manner, The
ing body, that is, in a relativelysimple manner;
disc 1 is formed at its periphery into the two sepa
pushers, driver tubes ?tted with lease bands or
rating ?ngers 1 and S‘, disposed opposite one an—
similar Working elements, such as have hitherto
other, between which is located the radially di
been in common use, being avoided. The known
rected separating arm 9 which is uniformly ta
constructions are complicated and are apt to cause
pered towards the periphery of the disc and ends
such heavy stresses on the ‘warp threads that the
latter, especially those of a delicate nature, are
injured and even break, whereby faults in the
in a point. Onv the side’ corresponding to the rear
side of the disc I, the separating arm 9 has its
two longitudinal edges formed into wedge-shaped
separating work and’ breakdowns may occur, and
surfaces It and II respectively. The latter are
40
the eiliciency of the particular weaving prepar
inclined oppositely with respect to one another,
ing machine, for instance a warp- thread tying
machine, thus is reduced. Moreover, lease bands
are themselves exposed to considerable‘ wear.
so that the separating arm 9 forms a double
wedge; on ‘the front side of the disc I the sepa
rating arm 9 has its free end portion beveled off,
whereby the point of the separating arm is
brought between the front and rear side of the
disc i', as shown inFigs. 8 and 10'. The wedge—
A constructional example of‘ the arrangement
according tothe invention will now be described
with reference to theaccompanying drawings-.
Fig. 1 shows the separating body in rear viewv
with a section through its rotary shaft,’
shaped surface Id of the separating-arm 8 faces
the separating ?nger ‘I, and the wedge-shaped
.
Figs. 2 and 3 are similar views, but with'the
surface I l faces the separating ?nger 8, Between
separatingbody in a different- angular position‘ 50 each of‘ the two wedge-shaped surfaces it and i 5‘
' from" that‘: of Fig; 1, for explaining»- its manner of
and, the adjacent separating‘?n-ger ‘I and ii re
operation in one direction of‘rotation,
spectively, there is a guiding slot l2‘ and i3 re
Fig. 4 shows a front view» of the separating
spectively for'the? reception- of the thread, which
body’ in the same angular position as Fig; 1,
~
is open'a-tthe periphery of the disc! and‘ i's'thus‘
Fig-{Bis aviewirom belowofiF-ig; 4,"
' ' ’
55.
2,413,881
freely accessible. On the ?rst side of the disc I.
each of the two separating ?ngers ‘I and 8 is pro
vided with a. depression I4 and I5 respectively,
forming continuations at the base of the corre
sponding guiding slot I2 and I3 respectively and
being widened towards the periphery of the disc
I. The two separating ?ngers 1 and 8, due to
being suitably tapered, terminate in points which
4
sequently the said thread passes out of the path
of the separating ?nger and is liberated by it,
whereupon the thread, under the in?uence of its
own tension, moves completely onto the rear side
of the disc I and consequently out of the rotary
path‘ of the separating ?nger 8, the said thread
thus having been separated out of the group B.
The described working cycle is then repeated, as
lie between the front and the rear side of the
long as the separating body is within reach of the
disc I. The disc I of the separating body is of 10 warp and the shaft 2 of the separating body is
symmetrical formation with respect to the centre
plane of the radial separating arm 9.
As will be seen from the drawing, the driving
shaft 2 lies midway between the two lease or di~
viding bars I6 and I ‘I, both of the same diameter,
parallel thereto, but outside the crossing point of
the two groups A and B of warp threads, and so
far above the crossing point that the central peg
turned to and fro by the driving lever 6.
The conical point 4, provided on the front side
of the disc I, assists the satisfactory forward feed
of the separating device transversely over the
warp, whilst the arrangement of the points of
the two separating ?ngers ‘I and 8 between the
front and the rear side of the disc I assists the
reliable engagement of each separating ?nger be
3 provided on the front side of the disc I bears
tween the foremost thread to be separated off and
lightly on the warp threads of the groups A and 20 the thread next following it in the series, and the
B, when these come within range of the cy
analogous arrangement or displacement of the
lindrical part 4 of the said peg 3, in Figs. 1 and 4,
point of the separating arm 9 assists the separat
the foremost thread of the group A is in the region
ing work, as will be obvious.
of the depression I4 in the disc I, associated with
As the separating device can move transversely
the guiding slot I2. Owing to the corresponding 25 over the warp to be treated, without the warp
pressure of the disc I against the warp threads
threads having to be out off after being sepa
to be separated off and the tension in the threads,
rated, the interlacing of the warp remains, as is
caused thereby, the said foremost thread will of
necessary in many weaving preparing machines,
itself have entered into engagement with the said
for instance in those with stop strips to be mount
depression I4, and the separating work thus al 30 ed on the separated warp threads or in thread
ready will have been initiated. According to
serving machines. For such preparing machines,
Figs. 1 and 4, the separating body occupies the
known separating devices, in which the warp
one terminal position, out of which it is moved,
lease has to be destroyed each time, cannot be
when‘ the separating device is in operation,
used. A further advantage of the described sepa
through a suitable rotation (the direction shown
rating device is that one is enabled to work si
by the arrow in Figs. 1, 2 and Figs. 4, 7) into the
multaneously with several separating bodies
other terminal position shown in Figs. 3 and 9,
spaced above one another or side by side, for in
whereupon it turns back again into what is here
stance in order to be able to separate in one and
assumed as the initial position. When the sepa
the same operation the leased threads of two
rating body is turned out of what is assumed in 40 warps arranged above one another or vertically,
the drawings to be the position of rest, the ten
such as in warp-knotting or similar machines.
sioned foremost thread of the group A, which is
What I claim and desire to secure by Letters
lying in the said depression I4 and in the region
Patent is:
of the guiding slot I2, will be seized by the sepa
1. A device for separating leased warp threads
rating arm 9 and guided by the wedge-shaped 5 in weaving preparing machines, in which, as each
surface If) of the latter on to the rear side of the
foremost thread is separated. off, the next follow~
separating arm 9 and thereby also of the sepa
ing thread in .the series of warp threads is held
rating ?nger 8, being thus moved out of the rotary
path of the separating ?nger 8, as will be seen
from Figs. 2, 7 and 8.
Consequently, the said
thread passes, as shown in Figs. 3, 9 and 10, out
of the path of the separating ?nger 1 and is there
fore liberated by it, whereupon the thread under
the in?uence of its own tension moves completely
onto the rear side of the disc I and consequently -
out of the rotary path of the separating ?nger
l, The said thread has thereby been separated
out of the group A, and the separating body has
reached its corresponding terminal position. In
the latter (Figs. 3, 9), the foremost thread of the
group B is in the region of the guiding slot I3
and of the depression I5 of the disc I, associated
with the corresponding separating ?nger 8, with
which depression this thread has of itself come
into engagement, owing to its own tension.
Thereupon the separating body is turned back
back, comprising a rockably mounted separator
provided with two opposite separating ?ngers and
with a depression each disposed on the front side
thereof, said recesses being adapted to receive a
warp thread to be separated off, and a separat
ing arm in the form of a double wedge disposed
between the two separating ?ngers, the whole in
such arrangement that, on the separator turning
in one direction, the, foremost warp thread is
caught by the separating arm, being guided over
one of the wedge surfaces thereof behind the
separating ?nger remote from this surface and
being released by the other separating ?nger,
whilst, on the separator turning in the opposite
direction, the next following thread in the series
of warp threads is caught by the separating arm,
being guided over the second wedge surface of the
latter behind the separating ?nger remote from
this surface and being released by the second
into the initial position according to Figs. 1, 4
separating ?nger.
and 5, the tensioned foremost thread of the group
2. A device as claimed in claim 1, wherein each
B, which lies in the depression‘ l5 of the disc I
of the two depressions provided on the front side
and in the path of the guiding slot I3, being 70 of the separator for the reception of the thread,
seized by the separating arm 9 and guided by the
forms a continuation at the base of a thread guid»~
wedge-shaped surface H thereof onto the rear
ing slot disposed between the particular separat
side of the separating arm 9 and, therefore, also
ing ?nger and the separating arm.
of the separating ?nger "I, whereby it is caused
A device asv claimed in the claim 1, wherein
to move out of the rotary path of the latter. Con 75 the3. separator
comprises a substantially circular,
2,413,881
?at rockable disc, the said two separating ?ngers
at its periphery, and between the latter the radi
ally directed separating arm, the disc on its front
side being provided with a conically pointed cen
' tral peg.
4. A device as claimed in claim 1, wherein the
radial separating arm is tapered towards the
periphery of the disc, and the latter is built sym
metrical with respect to the central plane of the
separating arm.-
.
1
5. A device as claimed in claim 1, wherein the
two separating ?ngers and the separating arm
terminate in points intermediate of the front and
the said conical point of the peg forming a con
tinuation of a cylindrical surface thereof.
7. A device as claimed in claim 1, wherein the
axis of rotation of the separator lies between the
two lease bars provided for the warp and parallel
to them, but outside the crossing point of the
two groups of warp threads, so that the said cen
tral peg is capable of bearing against the warp
threads of both groups.
8. A device as claimed in claim 1, wherein the
10 separator comprises a substantially circular, ?at
rockable disc, and a conically pointed central peg
integral with the ‘front side of the latter; the
said conical point of the peg forming a continua‘
the rear side of the said disc.
tion of a'cylindrical surface thereof, and the said
6. A device as claimed in claim 1, wherein the 15 peg being integral with the driving shaft of the
separator comprises a substantially circular, ?at
disc.
rockable disc, and a conically pointed central
HEINRICH MEIER.
peg integral with the front side of the latter;
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