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Патент USA US2136923

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Nov. 15, 1938..
B, PROSS
2,136,923
METHOD OF AND DEVICE FOR PRODUCING SLUBBING 0N DRAWING FRAMES
Filed June 29, 1937
2 Sheets~Sheet l
Nov. 15, ' 1938.
B. PROSS
2,136,923
METHOD OF AND DEVICE FOR PRODUCING SLUBBING' ON DRAWING FRAMES
Filed June 29, 1937
159. a
2 Sheets-Sheet 2
H9. 7
722002 for:
Patented Nov. 15, 1938
r 2,136,923
UNITED STATES PATENT oF-Fics'
METHOD or AND DEVICE FOR PRODUCING
SLUBBING 0N DRAWING FRAMES
Bernhard Pross, Bocholt, Germany
Application June 29, 1937, Serial No. 150,985
,
In Germany September 23, 1936
5 Claims.
(Cl. 19-457)
This invention relates to a method of and de
vice for producing slubbing on drawing frames
with the object of obviating several hitherto re
quired working operations on the ?ier.
According to the invention the slivers, after
C71
having passed through the ?rst drawing frame,
are led either singly or in combination, through
a non-rotary condensing funnel and then passed
between pressing rolls which are under the in
fluence of pressing elements. In this manner
two or all the working operations on the ?iers
will be obviated. The funnel or funnels is or
are so arranged that the delivery‘ end will be in
close'proximity to and almost in contact with
the pressing rolls one of which is urged against
the other by a force greater than its weight.
The receiving containers are preferably sub
divided by partitions.
The invention also includes a particular con
20 struction of the funnel which has a three cm.
long, cylindrical or tapering delivery passage at
the‘ end of which a clamping spring or springs
are
provided.
_
l
I
By the improved method the material will
be subjected to a very tender treatment. A
greater part of the count ?uctuations on the
fliers will be obviated. The tensile strength of
the yarn will be considerably increased. The
amount of slubbing containable in each receiv
30 ing will be increased by about two thirds of the
weight. Moreover, the improved method and
device ensures a reduction of about 60% in the
number of operatives required, and at the same
time a saving of power is obtained in connec
9 tion with the ?iers.
While the resulting slubbing can be received
in the ordinary cans, it is preferable to employ
receiving containers divided by partitions into
rectangular compartments.
40
The method can be carried out by means of
existing drawing frames, and no new, expensive,
additional devices will be required.
According to the invention the slivers~ob
_ tained from the ?rst drawing frame are led
singly or in combination through a condensing
funnel, the delivery ori?ce of which is located
just above the nip of the pressing and drawing
rolls whereby the ?bres will be drawn out, paral
50 leled and condensed into a very ?rm slubbing.
The slubbing will be ?rm enough to obviate, ac
cording to the desired count of the yarn, two or
three flier passages or even to be spun directly
on the ring spinning machine.
Fig. 1 of the accompanying drawings repre
55
sents a plan view of a device for carrying‘ out
the improved method,
‘
Fig. 2- is a diagrammatic side view of the de- '
vice,
'
Fig. 3 is a side view of one of the funnels,” ‘ ~I‘
Fig. 4 is a vertical section of the'funnel,
Fig. 5 is an inverted plan view of the funnel‘,
and
1
Figs. 6 and '7 are views at right angles to each
other of a modi?ed‘form of the funnel;
'
From the well known last but one drawing
frame the slivers are deposited in'can‘s I. From
the latter the slivers pass through small‘con
densing funnels 3 ?tted with clamping‘ springs
and then between well known drawing ‘rolls 4. 115
The drawn out slivers then pass over a guide
plate 5 and through specially oonstructed‘ffu‘n
nels 6 provided with clamping springs; The slub
bing thus obtained is compressed between pressL
ing rolls 1 and 8.
The funnels 6 are arranged
with their lower pointed ends in close proximity
to and almost in contact with the rolls 1, 8 but
slightly out of symmetry therewith, as shown
in ‘Fig. 2. Instead of bearing against the roll 1
by gravity in the usual manner, the roll »8 bears .25
against the latter with a pressure greater than
its weight.
'
The funnels 3, 6 have each a cylindrical or
tapering delivery passage 9 about 3 cm. in length.
Applied to the outside of the funnel are blade 30
springs I0 the free lower ends of which are
‘channelled and adapted to mesh under spring
action so as to condense the slubbing still fur
ther as it passes between them.
The springs
are adapted to yield to projecting elements on‘ 35
the slubbing and let them pass without break
age of the latter.
One of the springs may be omitted, in which
case the funnel is provided, as shown in Figs.
6 and 7, with a laterally deposited outlet ori?ce 40
l2 against which the channelled end of the re
maining spring is adapted to bear for condensing
the slubbing.
The funnels may be made of metal, but they
are preferably made of some acetyl-cellulose or
hydrocarbon (mixed polymerizate) substance.
The guide plate 5 is provided at its front end
with semicircular incisions whereby it engages
the funnels 6 for the better guidance of the sliver
bands.
'
50
The slubbing delivered by the rolls 1, 8 is re
ceived in a container l3. The latter is box
shaped and divided by partitions l4 into rec
tangular compartments for the reception of the
slubbing. The container is reciprocated under 55
2
2,136,923
the pressing rolls for the uniform distribution
of the slubbing within the compartments. The
rectangular shape of the compartments has the
advantage of accommodating the largest amount
of slubbing. The walls and partitions of the con
tainer may be provided with vertical slits through
which a tool can be passed for compressing the
slubbing within the container. The slits also
allow the emptying progress of the container
10 to be conveniently inspected when the container
is placed on the ring spinning machine.
Rollers 29 are arranged above the container
ii for the purpose of packing the slubbing into
the container when the latter is full.
The funnels 3 condense the slivers and keep
15
them at suitable distances apart between the
drawing rolls. The funnels 6 further condense
the slivers and turn them into a very ?rm slub
bing. Additional funnels may be employed for
20 leading the slubbing into succeeding drawing
frames if such are employed.
The slubbing delivered by the device has a
tearing length of 18 meters. This effect is ob
tained by the springs I 0 and by the additional
pressure of the roll 8.
The compartments of the container l3 have
each an area of 21/; x 12 inches.
This corre
sponds to the diameter of 9 inches of the usual
round cans. The width of 21/2 inches corresponds
30 to the spacing of the spindles in the ring spin~
ning machine, and the container will therefore
be conveniently accommodated on the machine.
The weight of the slubbing containable in each
compartment has been found to be 5,000 grams,
35 1. e., one month’s supply for one spindle.
Usu
ally a'spool of 250 grams is exchanged for each
spindle every other day, so that the improved
arrangement will effect a considerable saving of
work.
The new method according to which the slivers
40
are led through one or more funnels instead of
through three fliers as usual, is the commence
ment of a new development in spinning practice.
The funnels are added to the ordinary drawing
45
frames.
I claim:
1. A method for producing slubbing on draw
ing frames, consisting in feeding the sliver in
the state it leaves the drawing frame through a
funnel at the last pass of the drawing frame, in
resiliently gripping the sliver on all sides as it
leaves the funnel to produce a retarding moment
and bring all the ?bres even the smallest in par
allel, and then feeding the sliver directly be
tween taking up rolls.
10
2. An arrangement for producing slubbing on
drawing frames, comprising in combination with
a drawing frame, at least one funnel at the de
livery end of said frame, said funnel having
a substantially 3 cm. long delivery passage, and 15
blade springs surrounding the outlet of said
passage.
3. Anarrangement for producing slubbing on
drawing frames, comprising in combination with
a drawing frame, at least one funnel at the de
livery end of said frame, said funnel having
20
a delivery passage with a substantially straight
inner wall, and blade springs surrounding the
outlet of said passage.
4. An arrangement for producing slubbing on 25
drawing frames, comprising in combination with
a vdrawing frame, at least one funnel at the de
livery end of said frame, said funnel having
a delivery passage with a substantially straight
inner wall, blade springs surrounding the outlet 30
of said passage, and a pair of taking up cylin
ders, the outlet of said passage delivering di
rectly in the nip between said taking up cylinders.
5. An arrangement for producing slubbing on
drawing frames, comprising in combination with 35
a drawing frame a plurality of funnels at the
delivery end of said frame, blade springs sur
rounding the outlet of each of said funnels, a
pair of taking up rolls directly below the delivery
end of said funnels, a slubbing container located
between said rolls, and partitions dividing said
container into compartments each compartment
adapted to receive a slubbing from one of said
funnels.
'
BERNHARD PROSS.
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