US2431726A - Pneumatic collection and air conditioning for textile spinning frames - Google Patents

Description

Dec. 2, 1947. c, BECHTLER I 2,431,726

PNEUMATIC COLLECTION AND AIR CONDITIONING FOR TEXTILE SPINNING FRAMES Filed June 1, 1946 3 Sheets-Sheet 1 INVENTOQ HANS C. BECHTLER.

1 ATTORN cvs.

1947. c. BECHTLER V 2,431,726

PNEUMATIC COLLECTION AND AIR CONDITIONING FOR TEXTILE SPINNING FRAMES Filed June 1, 1946 3 SheetSQSh'eet 2 r I I W 6? mvgu-ron. HAN: C. Beer-111.1512.

ATTORNEYS.

Dec. 2, 1947. c, BEIC TLE 2,431,726

PNEUMATIC COLLECTION AND AIR CONDITIONING FOR TEXTILE SPINNING FRAMES FiledJune 1,-1946 s Sheets-Sheet s L a s MW 4 INVEN'I'OE 4L; ATTORNEYS.

Patented Dec. 2, 1947 PNEUMATIC COLLECTION AND AIR CONDI- TIONING FOR TEXTILE SPINNING FRAMES Hans C. Bechtler, Zurich, Switzerland, asslgnor to Pneumafli Corporation, New York, N. Y., a

corporation of Delaware Application June 1, l 6, Serial No. 673,781 9 Claims. (Cl. 57-34) Thi invention relates to the art of textile spinning and more particularly to the spinning of yarns or threads from strands, such as roves, on spinning frames, such for example as ring frames. The invention is more particularly concerned with removing the broken ends or loose particles of said strands being operated upon and of maintaining suitable conditioned air in the immediate vicinity of the strands being operated upon.

The term "strand as herein used is to be understood as meaning a partly finished product lustrating by way of example the preferred embodimentpof the apparatus used in carrying out such as is operated upon in the process of producing a finished or fully manufactured prodnot such as a more or less highly twisted yarn or thread. In one stage such a strand is in loose or only slightly twisted condition and is called a rove; and in this form the strand is most likely to breakage and to shed loose particles while being operated upon in the'spinning frame. Likewise, in this form of the strand air conditioning is of especial importance. While the invention is especially useful in the process of operating upon roves, it is also useful in operating upon strands in intermediate stages of completion; The term air conditioning system" or the like expression herein used is to be understood as meaning any exhaust or ventilating system with or without a humidifying or dehumidifying or heating or cooling or purifying or any combination of these.

An object of the present invention is to eifect an eflicient collection and removal of broken ends and loose particles liberated from said strands during their travel through a spinning frame and to simultaneously effect a uniform distribution of conditioned air in-the immediate vicinity of each individual strand being operated upon in a spinning frame or a battery of spinning frames, whether said spinning frames are operated singly or in batteries and whether said batteries are contained in one or a plurality of separate rooms.

Another object of the invention is to uniformly distribute conditioning air to a plurality 'of strands being operated upon, whether on a single spinning frame or a battery of spinning frames,

and to assure the uniformity of the conditioned air reaching all of said strands.

Another object of the invention is to provide for economy in operation and eflicient removal or pieces or particle detached from said strands during operation of said spinning equipment.

Further objects of the invention will more fully appear from the following description taken in connection with the accompanying drawings 11- themethod.

The invention consists in the method herein described and in the novel features, arrangement, construction and combination of parts of the apparatus and means hereinafter described in accordance with certain preferred embodiments thereof, and the invention will be more particularly pointed out in the appended claims.

Referring to the accompanying drawings, in which the same reference characters indicate the same parts in the various views;

Fig. 1 is a plan view showing an embodiment of the invention, somewhat diagrammatically, comprising a battery of spinning frames provided with a combined pneumatic collecting and air conditioning system;

Fig. 1A (Sheet 3) is a fragmentary view of the same embodiment as shown in Fig. 1 showing a slight modification thereof;

Fig. 2 is afront elevational view showing somewhat diagrammatically further features of one of the spinning frames and pneumatic collecting and air conditioning system as illustrated in Fig. 1;

Fig. 3 is a plan view showing further details of the structure illustrated in Figs. 1 and 2, on a somewhat larger scale;

Fig. 4 is a partial view of the apparatus shown in Fig. 1 illustrating a different setting of the position of regulating dampers; v

Figs. 5, 6 and 7 show a modification of the arrangement illustrated in Fig. 4 and variations in the adjustment of the regulating dampers;

Fig. 8 shows the apparatus according to Figs. 1 and 7 with added automatic controls for regulating the dampers; and

Fig. 9 shows a modification of the embodiment disclosed in Fig. 1.

'As is well known to those skilled in the art, the removal of broken ends of strands in spinning operations and the removal of dust particles from the strands being spun have presented a serious problem which has not heretofore been solved. It has been proposed to remove broken ends and dust particles by pneumatic means, but such proposals have been unsuccessful and has seriouslyinterfered with the uniform distribution of conditioned air in the spinning room.

The present invention assures not only an even distribution of conditioned air in the spinning room'but the uniform distribution of the conditioned air' right at the strands being operated 3 I upon in the exact location where the strands are under combined tension and torsional stresses. Such distribution of conditioned air is induced by individual suction streams concentrated adjacent the respective strands being onerated upon so as to entrain the broken ends and loose particles liberated from said strands and collect them, by means of suitable filters, and return the filtered air from the collectorstream to the air conditioning system in such proportions as are required for the conditioned air. According to the invention, it is therefore possible to greatly increase the efficiency of oper-- ations and to effect a remarkable uniformity in the operating conditions of the spinning apparatus regardless of the number of spinning frames in a battery or the number of batteries in a given installation and whether or not the batteries are in one or a plurality 'of separate spinning rooms.

Referring more particularly to Figs. 1 and 2, a plurality of spinning frames, such a i, are provided with respectively corresponding suction conduits or ducts 2 and each of said ducts is provided with a plurality of branches or pipes 3 provided with a series of orifices or slots 4. The ducts 2 extend the full length of respective spinning frames I and are preferably disposed beneath the creels (Fig. 2) such as and the orifices 4 are located at the places on the spinning frames where the broken ends usually occur, which is between the output side of the feed or delivery rollers R and the bobbins B. A separate orifice 4 is provided for each strand S (Figs. 2 and 3) such as a roving strand or the like being operated upon, and is disposed below the path which said strand follows; so that upon the breaking of a strand the free end is drawn by suction through its corresponding orifice and any broken end or portion separated therefrom is sucked through said orifice and carried through said branch pipes 3 into said suction ducts 2, etc. The multiple number of orifices thus provided also serves to effect an intensive removal of dust particles, since the greatest development of dust takes place at this point air in the spinning room is in' the desired condition and all of the filtered air removed by the positioned adjacent respective spinning frames (as in Figs. 1 and 2), a common-filter box may be inserted in the common suction conduit 8 between the last filter box 5a and the fan I. In Fig. 1A (on Sheet 3) I have shown this modification in which the parts corresponding to 5, 5a, 8 and 'I of Fig. 1 are designated respectively as 5', 5a, 6' and 'I' and the additional common filter box is designated 5b. The filter boxes are provided with a door, or other suitable means to remove the collected broken ends, which being free from extraneous dirt may be readily re-used.

In Fig. 4 the dampers 9 and Ii are open and the damper [0 closed. The air from the fan 1 is emitted through the damper 9 into the open air or, for the purpose of being made use of further, into other spinning rooms and the fan l2 takes air from the outside through the damper ii.

In Fig. 5 the position of the dampers is analomatic collector. In this ,case a damper I6 is prowhere the broken ends occur. The broken ends and dust particles thus entrained in the moving air pass from the ducts 2 into the filter boxes 5a where they are collected by the filters 5, and the suction air passes into the common suction conduit 6 through which it is drawn by the axial flow suction fan 1 disposed within an enlarged portion or channeled duct of the conduit 6 serving as a housing for said fan I. The air passes from the fan 1 into a distributing and mixing chamber 8 which forms a part of an air conditioningsystem to be more particularly referred to following. The chamber 8 is provided with air dampers 9, Ill and ii and the chamber is in communication with the intake side of a suitable fan or blower I! which withdraws air from the chamber 8 and passes it through a conditioner conduit i 3 and emits it into the spinning room through the outlets ll, which are positioned in the region of the spinning frames I but are spaced therefrom a suitable distance to permit the use of a relatively few conditioner outlets l4 relative to the number of collector orifices 4.

The dampers 9, l0 and H (Fig. 1) are so adjusted that the air coming. from the fan I is returned into. the spinning room, the dampers 9 and ii being closedand the damper i0 being open. This condition would prevail when the ,propelled through fan "i is evacuated through damper 9 into the outside whereas the remaining part is returned through damper ill, the air conditioning unit l5 and fan i2 lnto the spinning room. One part of the return air required 5 by the air conditioning unit can also be admitted, as through a suitable suction duct H, from the spinning room past damper ifi'into the air con- 'ditioning unit and back into the spinning room whereas approximately the same amount of air which has been evacuated through damper 9 will be sucked through the outside air damper ii. If in installations as illustrated in Figures 6 and 7 the spinning frames are not in operation, for instance, before or after working hours fan 1 of thepneumatic collector need not be in operation. The air conditioning of the spinning room can be supplied normally with outside air or return air due to dampers ii and i6.

Fig. 8 shows a similar installation as in Fig. 5. In this case, however, the air dampers are automatically controlled by means of control units well known to those skilled in the art, such as an electrical or pneumatic air damper motor l8 which is regulated by a regulator l9 which can be a thermostat or hygrostat. Regulator 19 can be put in various positions on diflerent installa- -pneumatic collector, for instance, by means of a static pressure regulator 21 which controls the I speed of the motor of fan I by way of an actuating line 28. This can be done electrically or by compressed air with a servo-motor which changes the position of the brushes on the Ian motor. The suction pressure can be also controlled by other known means such as with air dampers instead of the variation of the fan speed. The control'of the suction pressure has the advantage that the correct pressure in the pneumatic collecting system will always be maintained independent of the number of spinning frames operating. If part of the spinning frames are out of operation the speed of the fan necessary to maintain the correct pressure will be reduced with the corresponding saving in power required to drive the fan. Finally the suction pressure control 28 can be connected to a signal mechanism, in a manner well understood by those skilled in the art, to immediately indicate faulty operation in the system, for instance, in the case of blocked filters.

In the embodiment shown in Fig. 9 each frame,

tioner for supplying conditioned air to said strands being operated upon, said intake orifices being spaced from the outlet of said air conditionenwhereby a uniform distribution of said conditioned air is induced adjacent said strands, a common conduit interconnecting the outlet side of said plurality of ducts with the inlet side of said air conditioner, and control means for regulating the volume of air returning into said conditioner from the outlet sides of said sue-- tion collectors.

2. In a combined pneumatic and air conditioning system or the character described the combination of a pneumatic suction collector comprising. a plurality of ducts each providing a pluality of intake orifices dsposed at spaced intervals corespondng to the spacing of a plurality of strands of textile material being operated upon to thereby collect broken ends and such'as l,-has a pneumatic collector which is complete in itself having its own suction fan 5 in filter box 5. The air propelled by fan 5 can be exhausted through duct-20 to the outside. By means of a damper 2i, which is controlled manually or automatically by a suitable air damper motor 22, the air can be partly or totally returned to the spinning room and thence to the chamber 8. The dampers 23 and 24 of the air conditioning unit are operated by a suitable damper motor 25 automatically controlled through regulator Hi. This regulator will also control the dampers 2i. Regulator l9 can be a thermostat or a hygrostat and be used in differ-- ent positions to suit the requirements of the air conditioning installation. Regulator l9, damper motor 25 and damper motors 22, are therefore connected through line 25. for instance, through a compressed air pipe in case of pneumatic control or electric conduits in the case of electric control. These dampers are arranged in such a way that whenever damper 2d closes or moves toward closed position, damper 23 will open or move toward open position and damper 2i will return the air from the pneumatic collector into the spinning room.

Having thus described my invention with particularity with reference to its preferred form, it will be obvious to those skilled in the art, after understanding my invention, that other changes and modifications may be made therein, without departing from the spirit and scope of my invention, and I aim in the appended claims to cover such changes and modifications as are within the scope of the invention.

What I claim is:

1. In a combined pneumatic and air conditioning system of the character described the combination of a pneumatic suction collector comprising a plurality of ducts each providing a plurality of intake orifices disposed at spaced intervals corresponding to the spacing of a plurality of strands of textile material being operated upon to thereby collect broken ends and loose particles of said strands, an air condiloose particles of said strands, an air conditioner for supplying conditioned air to said strands being operated upon, said intake orifices being spaced from the outlet of said air conditioner, whereby a uniform distribution of,said conditioned air is induced adjacent said strands, a common conduit interconnecting the outlet side of said plurality of duets with the inlet side of said air conditioner, said common conduit comprising a channel duct provided witha fan, and control means for regulating the volume of air returning into said conditioner from the outlet sides of said suction collectors.

3. In a combined pneumatic and air conditioning system of the character described the combination of a pneumatic suction collector comprising a plurality of ducts each providing a plurality of intake orifices disposed at spaced intervals corresponding to the spacing of a plurality of strands of textile material being opertioner for supplying conditioned air to said strands being operated upon, said intake orifices being spaced from the outlet of said'air conditioner, whereby a uniform distribution of said conditioned air is induced adjacent said strands, a common conduit interconnecting the outlet side of said plurality of duets with the inlet side of said air conditioner, said common conduit comprising a filter box for retaining said broken ends and loose particles, and control means for regulating the volume of air returning into said conditioner from the outlet sides of said suction collectors.

4. In a combined pneumatic and air conditioning system of the character described the combination of a pneumatic suction collector comprising a source of suction and a plurality of intake orifices disposed at spaced intervals corresponding to the spacing of a plurality of strands of textile material being operated upon, an air conditioning system for supplying conditioned air to said strands being operated upon, said intake orifices being spaced from the outlet of said air conditioning system, whereby a uniform distribution of said conditioned air is induced adjacent said strands, control means for regulating the volume of air returning into said conditioning system from the outlet side of said su'ction collector, and means of communication between the outlet side of said suction collector and the atmosphere external said air conditioned zone.

5. In textile spinning apparatus of the class wherein a plurality of strands are fed across a spinning frame from a creel or the like supply to respective bobbins on which they are wound and said strands being opera-ted upon are frequently broken in their passage between said source of supply and bobbins and where an air conditioning system is provided for said operation, the combination with said frame and air conditioning system of a pneumatic collector duct extending lengthwise of said frame and disposed between said source of strand supply and bobbins beneath the path of travel of said strands and provided with spaced orifices disposed in respective register with the paths of travel of said strands, said suction intake orifices being interposed in the path of circulation intermediate 6. The combination with textile spinning apparatus comprising a spinning frame provided with creel and delivery rollers disposed on opposite sides thereof from which a, plurality of strands are fed outwardly to winding bobbins, of a suction collector duct extending substantially the length of the spinning frame, a series of branch ducts extending outwardly in opposite directions from the collector duct provided with orifices spaced lengthwise of said frame, said orifices being disposed in respective register beneath said strands, a filter box in communication with the outlet of said collector duct, a suction fan for drawing air through said orifices into said duct and through said filter box, an air conditioner provided with an outlet, means providing circulation communication between the exhaust side of said collector and the intake side of said air the intake side of said air conditioner, and control means for regulating the volume of air in circulation between the exhaust side of said collector ducts and the intake side of said air conditioner. l

8. The combination with textile spinning frame apparatus comprising a battery of spinning frames each provided with a creel and delivery rollers disposed on opposite sides thereof from which a plurality of strands are fed outwardly to winding bobbins, of a series of suction collector ducts extending substantially the length of respective of said frames and each provided with orifices spaced lengthwise of its respective frame, said orifices being disposed in respective register beneath the paths of travel of said strands, a series of filter boxes in communication with the outlets of respective of said collector ducts, suction fan means for drawing air through said orifices into said ducts and through said filter boxes, an air conditioner provided with outlets, a common conduit connecting the exhaust side of said series of collector ducts and the intake side of said air conditioner, and control means for regulating the volume of air in circulation between the exhaust side of said collector .ducts and the intake side of said air conditioner.

9. The combination with textile spinning frame apparatus comprising a battery of spinning frames each provided with a creel and delivery rollers disposed on opposite sides thereof from which a plurality of strands are fed outwardly to winding bobbins, of a series of suction collector ducts extending substantially the length of respective of said frames and each provided with orifices spaced lengthwise of its respective frame,

7 said orifices being disposed in respective register conditioner, and control means for regulating the ducts extending substantially the length of respective of said'framesv and eachprovided with orifices spaced lengthwise of its respective frame, said orifices being disposed in respective register beneath the paths of travel of said strands, a series of filter boxes in communication with the outlets of respective of said collector ducts, suction fan means for drawing air through said orifices into said ducts and through said filter boxes,

an air conditioner provided with outlets, means providing circulation communication between the exhaust side of said series of collector ducts and beneath the paths of travel of said strands, a series of filter boxes in communication with the outlets of respective of said collector ducts, suction fan means for drawing air through said orifices into said ducts and through said filter boxes, an .air conditioner provided with outlets, a common conduit connecting the exhaust side of said series of collector ducts and the intake side of said air conditioner, a common filter box in said common conduit between said series of filter boxes and said air conditioner intake, and control means for regulating the volume of air passing through said common conduit to the intake side of said air conditioner.

HANS C. BECH'ILER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,140,420 Eaddy Dec. 13, 1938 FOREIGN PATENTS Number Country Date 18,231 Great Britain 1905 549,720 Great Britain Dec. 3, 1942

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