US 3086240 A
Description (OCR text may contain errors)
April 23, 1963 H. BERBERICH ET AL 3,086,24
- DEVICE FOR ELIMINATING FLYING FIBRE FROM TEXTILE MACHINES, PARTICULARLY SPINNING AND DOUBLING FRAMES Filed Feb. 18, 1960 2 Sheets-Sheet l IN V EN TORS HELMUT BEHBER/CH YHE/NR/CH THO MA B wwdm 17% v W W A T70RNYS p 1963 H. BERBERICH ET AL 3,086,240
DEVICE FOR ELIMINATING FLYING FIBRE FROM TEXTILE MACHINES, PARTICULARLY SPINNING AND DOUBLING FRAMES Filed Feb. 18, 1960 2 Sheets-Sheet 2 IN V R5 HE L MU T BE RBE R/C H HE/NR/CH THOMA ATTORNEYS United States PatentO and Heinrich Thoma, Zurich, Switzerland, assignors to Thoma Company, Zurich, Switzerland, :1 Swiss com- Filed Feb. 18, 1960, Ser. No. 9,586 Claims priority, application Switzerland Feb. 24, 1959 Claims. (Cl. 15-312) The invention relates to a device for eliminating flying fibre, dust and the like from textile machines, particularly spinning and doubling frames. It is known to employ for this purpose compressed air which is blown into the machine by means of a motor-fan unit travelling backwards and forwards across the machine in longitudinal direction. The disadvantage of this method resides in the fact that the flying fibre is only whirled up or even blown into the machine where it accumulates.
An attempt has also been made to keep the floors of spinning mills free from flying fibre by arranging two motor-fan units above the machine, these being staggered with respect to each other in longitudinal direction; with one :unit, compressed air is blown on to the floor with the aid of a hose extending thereto whilst with the other succeeding unit, air and flying fibre are drawn up by means of a suction hose also reaching to the floor. This arrangement however is only able to keep the floor adjacent or along the machine free from flying fibre. There is also the disadvantage that the compressed air whirls up the fibre from the floor and blows it under or even into the machine where the fibre may accumulate.
The device proposed according to the invention employs a motor-fan unit travelling backwards and forwards over the machine, but compressed air is blown into the machine approximately vertically and into the middle of same, whilst air is drawn off at both sides of the machine at different levels. At the same time this compressed air is also preferably blown into the middle of the machine before and behind the suction points, when seen in longitudinal direction. This method has appreciable advantages.
The stream of compressed air penetrating from above into the middle of the machine reaches all important parts of the machine and reaches to the floor. This stream of compressed air thus carries all the flying fibre, dust, etc., along with it. This stream of compressed air has the tendency to flow from the middle of the machine towards the side. Now as the air is in turn drawn off at both sides of the machine at different levels, the air loaded with fibre and emerging laterally from the machine, is picked up by these suction points. Thus no flying fibre and dust passes outside the vicinity of the machine so that, notwithstanding the stream of compressed air whirling up the fibre, none of it can pass into the machine room or to adjacent textile machines.
The invention will be explained in detail below with the aid of an embodiment shown in the drawing in which:
FIG. 1 is a front elevation of a double-sided spinning frame with the device according to the invention.
FIG. 2 is the corresponding side elevation.
In the figures, 1 denotes the roving bobbins, 2 the drawing frame and 3 the spindles of the spinning machine. The latter may be provided with a suction system for broken ends. 4 denotes the suction nozzles and 5 the suction pipes. 6 is a collecting channel and 7 the filter box. The roving bobbins 1 are advantageously suspended from cross-members 8 which are carried by supports 9. These supports also serve for mounting rails 10 on which a motor-fan unit 11 is arranged so as to be movable in the ice longitudinal direction of the machine. The suction chamber of this unit is connected to a relatively wide suction channel 12 which extends in bow shape over the machine and contains filter screens 13 holding back the flying fibre, dust and the like which is drawn in. These filter screens are arranged obliquely in such a way that they form in the suction channel 12 a chamber 14 from which the accumulating fibrous material can be removed through a flap 15 or the like. Tubular suction lines 16, 17, 18, 19 are connected at both sides of the machine to this suction channel 12 which is of rectangular cross-section. As will be seen from the drawing, they are of different length.
These suction lines have appropriate suction nozzles 20, 21, 22 and 23 which are directed towards the floor and towards the machine respectively. The suction lines 16 to 19 may consist of tubing or of flexible hose.
As will be seen from the drawing, a suction nozzle 21, tapering conically downwards is provided on suction line 17 in the vicinity of the spindles 3 and comprise a vertical suction slit 24 extending on a level with the spindles or the cops. This suction slit and suction nozzles 22 and 23 also, are arranged in such proximity to the machine that the stream of suction air draws off at the important parts of the machine, that is, nozzle 21 at the cops 25, nozzle 22 at the cylinder bank or in the region underneath the drawing frame and nozzle 23 at the roving bobbins 1. Nozzle 20 draws up the flying fibre and dust at the floor.
Further, compressed air channels 26 are provided at the pressure chamber of the unit 11, and, in the preferred embodiment illustrated, these are provided both before and behind the suction lines 16-19 (seen in the lengthwise direction of the machine). These compressed air channels 26 are provided with blowing nozzles 27 which can be pivotably or adjustably arranged so that the compressed air may be delivered in the desired direction. As will be seen from the drawing however, the compressed air is directed from these blowing nozzles 27 substantially into the middle of the machine and approximately vertically into same. The air emerging from these blowing nozzles passes into all important parts of the spinning frame in the direction of the arrows indicated in FIG. 1, so that the whole of the flying fibre deposited in the frame is carried along by these streams of compressed air. As these streams finally diverge towards both sides of the frame, the air loaded with flying fibre and dust is finally picked up by the suction nozzles 22 and 23 at both sides of same and at different levels. Thus no flying fibre can pass out of the region of the frame into the machine room and to adjacent textile machines.
It is of advantage in using the device according to the invention, if the textile machine indicated in its preferred embodiment, i.e., the spinning frame, possesses no interfering machine parts liable to impede the streams of compressed air. Thus, in a spinning or doubling frame, it is of advantage to provide a creel in which the bobbins are suspended in overhung fashion from the cross-members 8, so that the compressed air can move freely to the reving bobbins 1 and past these to the drawing frame, to the cylinder bank and to the spindles 3. Moreover, according to the invention, guide plates (not shown) may be provided inside the machine, in order to direct the streams of compressed air to the important parts of the spinning frame without interference.
In the cleaning device described and shown it is important that the blowing nozzles 27 be provided both in front as well as at the rear of the suction nozzles 20-23. Independently of the direction of movement of the unit 11 in direction A or B, a stream of compressed air always travels at a certain distance in advance of the suction nozzles 20-23.
This is necessary in order that the advance stream of compressed air may have sufficient time to travel through 3 the machine and pick up the flying fibre, which is then seized upon by the suction nozzles which follow on in the direction of movement.
1. A device for eliminating flying fiber from a textile machine, comprising: a longitudinally movable motorfan unit arranged for movement along the machine, said unit having a suction chamber and a pressure chamber; a plurality of vertical suction conduits of different length arranged on both sides of the machine, each of the conduits being connected at one end thereof to said suction chamber, the suction conduits having suction nozzles at the other ends thereof directed toward the machine and toward the floor, respectively; a plurality of compressed air conduits each connected at one end thereof to said pressure chamber and having a discharge nozzle at the other end thereof, said discharge nozzles being essentially vertically disposed and being located between the respective sides of the machine and above at least some of said suction nozzles so that air is discharged downwardly from said discharge nozzles toward the machine and thence said air passes toward the sides of the machine and to the suction nozzles.
2. Device in accordance with claim 1, characterized in that the discharge nozzles are arranged in the front and in the rear of the suction conduits, looking in the lengthwise direction of the machine.
3. Device in accordance with claim 1, for a spinning and doubling frame characterized in that a downwardly converging suction nozzle is arranged in the vicinity of the spindles and is provided with a vertical suction slit extending approximately over the height of the spindles or the cops.
4. Device in accordance with claim 1 characterized by a suction channel which is connected to the suction charm 4% her of the unit and extends in bow form over the machine, the suction conduits being connected to said channel on both sides of the machine, said suction conduits on each side being arranged behind each other in the lengthwise direction of the machine.
5. A device in accordance with claim 4, in which the suction channel has vertically extending arms and the suction conduits are connected to the lower ends of said arms; a filter screen obliquely arranged in each of said arms so that fiber entering said suction conduits collects on said screen; a door on each of said arms adjacent the screen therein, said door being located on the side of said arm remote from the machine.
References Cited in the file of this patent UNITED STATES PATENTS 1,857,410 Smith May 10, 1932 2,524,797 Holtzclaw Oct. 10, 1950 2,640,003 Steenberg May 26, 1953 2,677,629 Buck May 4, 1954 3,011,202 Holtzclaw Dec. 5, 1961 3,045,929 McEachern July 24, 1962 FOREIGN PATENTS 63,557 Holland June 15, 1949 1,147,780 France June 11, 1957 1,178,164 France Dec. 8, 1958 1,178,165 France Dec. 8, 1958 1,222,903 France Jan. 25, 1960 OTHER REFERENCES Textile World advertisement, vol. 109, No. 8, page 33, August 1959, issue of Textile World magazine.