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Патент USA US3045425

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July 24, 1962
'
H. BUHLER, JR
3,045,415
THREAD SUCTION DEVICE ON SPINNING AND TWISTING vFRAMES
Filed July 7, 1959
4 Sheets-Sheet 1
7-79. 4
Fig. 2
INVENTOR
HERMAN/V BUHLER, Jr,
July 24, 1962
H. BUHLER, JR
3,045,415
THREAD SUCTION DEVICE ON SPINNING AND TWISTING FRAMES
Filed July 7, 1959
4 Sheets-Sheet 2
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BY
July 24, 1962
H. BUHLER,_ JR
3,045,415
THREAD SUCTION DEVICE 0N SPINNING AND TWISTING FRAMES.
Filed July 7, 1959
4 Sheets-Sheet 3
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HERMHMV BUHLEIiJ/i
' July 24, 1962
H. BUHLER, JR
3,045,415
THREAD SUCTION DEVICE ON SPINNING AND TWISTING FRAMES
Filed July 7, 1959
32
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4 Sheets-Sheet 4
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Patented July 24, tee
2
3,045,415
THREAD SUCTION DE‘VKCE 9N §PHNNING
AND TWISTHNG FRAME§
Hermann Iliihler, In, Winterthur, Switzerland, assignor
to Firms. Hermann Biihler & (30., A.G., Whrterthur,
Switzerland
Fiied July 7, 1959, Ser. No. 325,502
Claims priority, application Switzerland Aug. 7, 1958
10 Claims. (CI. 57-56)
The present invention relates to a thread suction de
vice on spinning frames and twisting frames.
FIGURES 9 and 10 show cross-sectional views of two
modi?cations of the suction conduits.
A frame 1 of a spinning frame is provided with longi
tudinally extending roller beams 2, to which the stands 3
are screwed which support in a known way the driving
rollers of a drawing mechanism 6, particularly the feed
drawing rollers 4 upon the pressure roller supporting
arm 5.
In the center of the machine on the roller beams 2 a
known suction casing 8 is supported with symmetrically
arranged intake channels 7. The casing 3 ends in the
upper part of the machine with a fan 5 therein and a
?lter lit).
Suction conduits 12 extend into the ori?ces 11 of the
plurality of spinning stations and are arranged immedi 15 channels 7, said conduits being of smaller cross section
ately behind the drawing rollers between the roving bob
since the size thereof is limited by the upper and lower
bins and the spinning spindles.‘ 'In these devices the air
limitation of the ori?ce l1 and by the height of the sup
Devices for the thread and dust section are known
wherein relatively large slot-like ori?ces extend over a
stream is led ‘from the ori?ces to the conduits whose cross
porting feet 13. Because of technical flow reasons, a me
sections are nearly uniform at the center of the machine
dian altitude level is preferred. The suction conduit 12
to a ventilator which is covered by a ?lter. The above 20 itself extends, at the beginning, parallel to the direction
mentioned large cross section of the suction ori?ces fa
of ?ow within the ori?ce of the channel 7. Then the
cilitate a whirling and puri?cation of large amounts of
conduit 12 is slightly bent upwardly and extends recti
lineally towards the feed drawing roller Li.
air at a small pressure gradient and thereby minor con—
sumption of energy.’
The‘suction opening 1410f the suction conduits 12, as
It was found out in practice that such a device for 25 shown in FIGURE 3, widens slightly at the drawing
keeping the spinning'and twisting frames clean and there
by the spinning spaces, is extremely‘ suitable, but that the
thread suction process after breaking of the thread at the
roller 4 towards the bottom and the top and is arranged
in such a way, that air is circulated around from both
sides, i.e. from the front and towards the back, with
nearly the same amount of air. In addition to this, the
30 suction conduit 12 relative to the feed drawing roller 4,
satisfactorily controlled.
is so positioned, that the tangent to the feed drawing
The device according to the present invention removes
“ feed drawing roller of the drafting mechanism cannot be
these disadvantages. It is provided with a thread and ?y
suction device having‘a central casing with channels
roller coincides with the center line of the conduit 12.
Because of such positioning any broken thread is within
which are provided with an ori?ce slot each extending
the zone of the highest turbulences in conduit 12 and
within the range of the drawing mechanism at several 35 thereby the highest frictional forces are effective thereon.
The width of the conduit 12 corresponds to‘ the distance
working points, and is characterized by suction conduits
between two successive stands 3 on which the drawing
which are provided within the ori?ce slot of the chan
rollers are mounted.
nels and the suction openings of which are located closely
to the feed drawing rollers.
The suspension of the suction conduit 12 at its suction
Advantageously, the suction conduits extend over an
end which is located near the roller 4» is accomplished
entire drawing mechanism system between two stands or
by means of offset pin 15, which, on one hand, is welded
bearing points. Thereby the suction conduits may have
to the lower side of the conduit 12 or is soldered or fas
tened in any way, and on the other hand is clamped be
a constant cross section or may be formed diffusion-like.
According to a special embodiment a means is con
tween two springs l6 and 117, which are secured below
nected to the ori?ce slot into which the suction conduit 45 to the front surface of a stand 3 by means of a bolt 18.
The spring 16 which is adjacent the stand is provided at
extends, which converts speed energy to pressure. The
its upper end with a recess 19 for the insertion of the
suction conduit thereby can be extended, freely sup
pin 15, while the other spring 17 is slightly bent towards
ported, into the suction ori?ce without the aid of any
packings.
the front at the top, in order to facilitate an easy insertion
of the pin 15 from the front. In this way the conduit 12
With the above and other objects in view which will
can be easily, without the aid of any tools, detached to
become apparent from the detailed description below,
some preferred embodiments of the invention are shown
wards the front and again brought to its working position.
in the drawings in which:
Immediately beyond the conduit 12 in the channel 7
FIGURE 1 is a diagrammatical cross-sectional view
there is a diffuser 20 which retards the flow, i.e. converts
taken upon section line I—I of FIGURE 2 through a 55 the speed energy partially into pressure. For the accom
spinning frame illustrating the thread suction device.
FIGURE 2 is a partial diagrammatic front elevational
view of the spinning frame shown in FIGURE 1 illus
trating the thread suction device.
FIGURE 3 is a partial cross-sectional view upon an
plishment of this retarding action a short distance dif—
fuser is suitable whose cross section widens gradually
(FIG. 3). The graduated wall 20' of the diffuser is
mounted by means of standards 20" on the frame 1.
Towards the center of the casing 8 a ?ap 2.1 is provided
which is secured by means of a screw 23 to a shaft 22
with the suction means cooperating therewith.
which extends along the machine. The shaft 22 rotates
FIGURE 4 is a side view of a detail of the drawing
in supports 24 secured to the frame 1 of the machine. A
mechanism.
FIGURE 5 is a View similar to FIGURE 1 showing a 65 lever 25 which is ?xedly connected to the shaft 22 and
which is articulated to a lever 26, serves for swinging the
modi?ed construction of the suction mechanism.
?ap 21 towards the positions shown in dash lines or dot
FIGURE 6 is a partial elevational front view of the
and dash lines. At a thorough cleaning of the lower lo
construction shown in FIGURE 5.
enlarged scale showing the drawing mechanism together
cated machine parts, for instance by blowing compressed
70 air, the blown off ?y are then seized by the medium air
FIGURE 8 is a front elevationalview of the structure
stream which is rising towards the top and leads to the
shown in FIGURE 7, and
?lter it). In order that the thread suction shall continue
FIGURE 7 is a view similar to FIGURE 1 of a fur
ther modi?cation of the suction apparatus.
3,045,415
3
4
its function, the flaps are only adjusted to about 2/a, i.e.
said drawing rollers, said channel having an outer open
to the position shown in dash lines.
In spinning machines without the conventional belt
drive, for instance gear drives, the space between and
below the beams 2 is empty and can be used for install
ing the casing 8', as shown in the modi?cation of FIG
URES 5 and 6. The expansion of the casing 8' (FIG
URE 6) within the longitudinal direction of the machine
ing formed as a slot extending over a plurality of spin
ning and twisting stations of the frame, and a ?at sub
stantially rectangular suction duct having a suction open
ing extending uniformly over a plurality of spinning and
twisting stations and over the entire width of said duct
located adjacent said drawing rollers and having an outer
opening in the rear end, substantially as large as said suc
tion opening and located in the outer opening of said in
is so chosen that the casing can be ‘installed ybetween two
intermediate plates 27 forming the frame. In such case, 10 take channel.
3. A device according to claim 2, wherein the rear end
nothing has to be changed at the thread suction conduit
of said suction duct extends with play into the outer
12 which extends to the front drawing roller 4.
opening of said intake channel so that an upper and a
FIGURES 7 and 8 illustrate a further embodiment of
lower part of said opening remains free.
a casing which is placed at the bottom. It is provided in
4. A device according to claim 2 wherein a di?user
means is provided in said intake channel which trans
its upper part at the range of the spindles 29 with vertical
walls 30 in order to then taper at half of its height against
a suction aggregate (not shown) in a side view (FIG
URE 8) which is surrounded by a ?lter 31. Within the
forms speed energy into pressure and which constantly
expands in the direction of the air ?ow.
5. A device according to claim 2 wherein said suction
range of the spindles, i.e. where during the winding up
process by friction of the ring roller (not shown) parts of 20 duct has substantially a constant cross section and widens
the ?ber are raised off from the thread, a further hori
shortly before said suction opening.
zontal suction conduit 32 is symmetrically arranged which
enters with undiminished width into the casing 28 which
6. A device according to claim 2 wherein said suction
duct expands towards its rear end diifusion-like.
7. A device according to claim 2 wherein said suction
has not yet tapered at this point. The cross section can
be also formed di?usor-like, if this is desired for technical
reasons of the flow.
FIGURES 9 and 10 show modi?ed forms of the suc
tion conduit. In the form of FIGURE 9 the suction con
duit 33 has a conical diffuser and in FIGURE 10 the
'
3 duct expands step-wise.
8. A device according to claim 2 wherein the distance
of the drawing rollers from the front wall and the rear
wall of said suction opening of the suction duct are
equally large.
conduit 34 is provided with a graduated di?user 34.
30' 9. A device according to claim 2 wherein said suction
duct extends rectilineally from said suction opening and
The ori?ce slot 11 of the channel 7 can, instead of
then is provided with a bend and extends into said intake
being open, as shown, be closed with the exception of
channel in the longitudinal direction of the same.
the entry of the suction conduits 12. In this case, the
10. A device according to claim 2 wherein said suction
sudden enlargement of the crosssection at the entry of
the suction conduits 12 into the larger ori?ce slot 11 acts 35 duct has a straight section and the center line thereof
forms a tangent to the lower drawing roller which is cor
as an impact ditlusor. Naturally, in this embodiment the
related to said suction duct.
dust suction e?ect is not present.
I claim:
References Cited in the ?le of this patent
1. A thread suction means on a spinning andv twisting
frame comprising drawing means having feed drawing 40
UNITED STATES PATENTS
rollers, a centrally located suction casing, and a ?at sub
2,672,723
Bechtler _____________ __ Mar. 23, 1954
stantially rectangular suction duct having a suction open
2,720,074
Buhler ______________ __ Oct. 11,’ 1955
ing extending uniformly over a plurality of spinning and
2,890,563
Seress _______________ _._ June1l6, 1959‘
twisting stations and over the entire width of said duct
located adjacent said feed drawing rollers and having an 45
_
FOREIGN PATENTS
outer opening in the rear end, substantially as large as
652,311
Great Britain ________ _._ Apr. 18, 1951
said suction opening and extending into said central suc
tion casing.
,
2. A thread suction means on a spinning and twisting
frame comprising drawing rollers, a centrally located suc 50
tion casing having an intake channel projecting toward
668,351
938,653
1,023,262
1,063,357
Great Britain _________ __
Germany ____________ __
France ______________ __
France ______________ _._
Mar.
Feb.
Dec.
Dec.
12,
2,
24,
16,
1952
1956
1952
1953
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