US2454930A

US2454930A - Apparatus for treating filamentary material

Info

Publication number: US2454930A
Application number: US616582A
Authority: US
Inventors: William H Kreamer; John C Klingener; Ernest K Bauer
Original assignee: American Viscose Corp
Current assignee: Akzo Nobel UK PLC
Priority date: 1945-09-15
Filing date: 1945-09-15
Publication date: 1948-11-30
Anticipated expiration: 1965-11-30

Description

Nov. 30, 1948. w. H. KREAME R ETAL APPARATUS FOR TREATING FILAMENTARY MATERIAL Filed Sept. 15; 1945 WWW- iWlfIllIlR IINVENTORS. @0026 Patented Nov. 30, 1948 UNITED STATES PATENT OFFICE APPARATUS FOR TREATING FILAMENTARY MATERIAL William H. Kreamer, Ernest -K. Bauer,

American Meadville, Pa Viscose Corporation,

John C. Kllngener, and asslgnors to Wilmington,

Del., a corporation oi. Delaware Application September 15, 1945, Serial No. 816.582

mentary materials, such as threads, yarns, twisted. or untwisted bundles of continuous filaments,

wires, strands, cords or the like, whether or not such continuous materials contain a coating of a sticky liquid or plastic material thereon.

It is anobject of the invention to convey the particulate material to the running strand or the like while assuring that the strand does not form channels within the body of particulate material. Another object of the invention is to provide for the conveying of the particulate material 'insuccession to a plurality of stations where the running strand is to be treated by engagement therewith. A further object is to provide an arrangement in which the particulate material follows a circuitous path, first past the several strandtreating stations and then through a return to the first partof the path. It is a further object to arrange the return path so that any particulate material overflowing from the strand-treating stations falls to the return path to join the material being returned to the start of the cyclic path. Further objects and advantages of the invention will be apparent from the drawing and the description thereof hereinafter.

In the drawing, which is illustrative of the invention- Figure 1 is a front elevation of a multi-station apparatus of the present invention;

Figure 2 is a transverse section taken on line II--I[ of Figure 1;

Figure 3 is a front elevational "view of the upper conveyor with the trough therefor out way and the strand and exit slot in the front of the trough being shown in phantom by dotted lines,

Figure 3a is a'front elevational view of a modified form which the upper conveyor may take,

Figure 3b is a front elevational view of another form the upper conveyor may take, and

Figure 4 is a diagrammatic end elevation showing a modified arrangement of the two troughs.

As shown in the-drawing, the machine com-- prises a plurality of strand-collecting stations 2 spaced side by side longitudinally of the machine. These stations may comprise any suitable form of winding device to which the strand is directed by means of a traverse guide 3. As shown in the drawing, the strand proceeds from the base of a suitable supply which in the present instance is a dry spinning machine for spinning continuous artificial filaments comprising a plurality of cells 4 arranged side by side. At eachstation oi. the machine, the strand 5 proceeds from a guide 6 in 13 Claims. Cl. 91-46) the base of the spinning cell about a delivery roll 1 driven at constant speed through slots 8 and 9' in the outer walls of the troughs i0 and H, and then through the traverse guide 3 to the winding station 2. The two troughs Ill and II extend longitudinally of the machine and contain screw or worm conveyors l2 and' I3 respectively. These conveyors may be driven by gears l 4 and it which are in mesh and are driven by gear It on a shaft I1 driven by a motor or other suitable means (not shown). it comprises a plurality of sections each extending between two adjacent treating stations. As shown more particularly in Figures 2 and 3, this provides a break or gap in the helical fin I 8'01 the conveyor adjacent the path of the strand in each station. The ends of the individual units of the conveyor 12 are provided with complementary interflttlng projections shown at [9 and of Figure 2 and 20 these projections are rotatably mounted within a bearing 2!. The trough II for the return conveyor I3 is laterally ofiset' from and below the trough III for the upper conveyor so that particulate material overflowing from" the upper trough through the slots 8 turn conveyor. Preferably, the upper trough will overhang the lower return trough to a certain extent, as shown in the diagrammatic Figure 4, but where such is not the case, a sloped plate 22 (see Figures 1 and 2) may be arranged to cause material overflowing through slot 8 to fall into the lower chute. At the discharge end of the upper'trough Ill, a chute 23 is provided to cause the material to fall by gravity into the return trough ll.

A feeding hopper 24 is provided at the entrance end of the upper trough I0 and this is supplied with particulate material by the entiless bucket conveyor 25 which lifts the particulate material discharged from the end of the trough l I through the chute 2G. The elevating conveyor 25 may be enclosed within a suitable housing 21 provided with a door 28 to permit the introduction of additional material.

The screw conveyor in the upper trough will fall into the re- Preferably excess particulate material is shaken from the strands by means of a vibrating rod 29 material at those places in the trough through I which the strands pass. The height of the material in the trough is shown in dotted lines in the drawing. The lower sloped dotted line A in Figure 2 represents the surface of the material where fins iii are present whereas the upper sloped dotted line B shows the mound height. The screw conveyor unit in advance of the treating station pushes the material into the mound, whereas that beyond the treating station draws the material away from the mound so that it continuously passes over that hump or through the mound, thereby preventing channeling in the mound by the strand. Immediately after passing through the mound, each strand is shaken by contact with the vibrating rod 29,'so'that excess particulate matter is thrown into the lower trough H for return with the main body of particulate material being returned to the elevator 25.

Figure 3a shows a modified form of screw conveyor showing that it is not essential that the conveying fin be continuous or strictly helical between the mound-building gaps. As shown the conveyor shaft i2 has a plurality of inclined fins 18a, the rotary paths of which may or may not overlap adjacent their ends, but preferably do.

Figure 3b shows a modification in which the screw has an additional fin l8b disposed between the helix of fin is near the delivery end of the conveyor unit discharging to the mound region. This improvesthe uniformity of delivery.

The apparatus or the present invention may be employed for the application of dusts and powders to reduce the adhesion of such strands as rubber, artificial rubber, and substitutes for rubber. Examples of the latter type of material are the vinyl resins containing plasticizers. Examples of the particulate material that'may be applied are talc, borax, bicarbonate of soda, chalk and the like. Besides applying powdered materials to threads of plastic nature to prevent adhesion between the threads, the apparatus may be applied for the application of particles for the purpose of delustering a strand or for the purpose of making an abrasive material of strandular character. In cases where the strand does not have an inherent tackiness, a tacky coating of the liquid or paste may be applied thereto prior to its passage through the particulate material.

7 In the claims, the word strand is intended in a generic sense to cover a single continuous filament, a bundle of such filaments either twisted or untwisted, a yarn whether of continuous fila- ,ments or of short fibers, cords, narrow strips or ribbonsaandthe like, and to include textile as well,;as non-textile structures, such as ropes or wires.

It is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as defined in the appended claims.

We claim:

1. In an apparatus for applying a particulate material to a traveling strand, a container, screw conveyor means therein for propelling the particulate material longitudinally thereof, said means having a gap provided in the screw blading thereof whereby the material piles up to a higher level in the container adjacent said gap, and means for conveying a strand through the pile of material thus formed.

2. In an apparatus for applying particulate material to a running strand, a container, means for conveying the material through the container comprising rotatable means having helically arranged means projecting outwardly with respect to the axis for propelling the material longitudinally of the axis of the rotatable means, said projecting means being at least partially omitted or cut away along an intermediate portion of the rotatablemeans so that the material is allowed to pile up in the container at said intermediate portion, and means to guide a strand through the piled material.

3. In an apparatus for applying particulate material to a running strand, a container, means for conveying the material through the container comprising rotatable means having helically arranged means projecting outwardly with respect to the axis for propelling the material longitudinally of the axis of the rotatable means, said projecting means being entirely omitted or cut away along an intermediate portion of the rotatable means so that the material is allowed to pile up in the container at said intermediate portion, and

means to guide a strand through the piled material comprising an opening in a wall of the trough adjacent the cut-away portion of the screw.

4.1m an apparatus for applying particulate material to a running strand, a trough, a screw conveyor for propelling the material axially thereof through the trough, the screw being at least partially omitted Or cut away at an intermediate portion thereof to cause piling of the material at said portion, and means to guide a strand through the piled material.

5. In an'apparatus for applying particulate material to a running strand, a trough, a screw conveyor for propelling the material axially 2 thereof through the trough, the screw being at least partially omitted or cut away at an intermediate portion thereof to cause piling of the material at said portion, and means to guide a strand through the piled material comprising an opening in a wall of the trough adjacent the cut away portion of the screw.

6. In an apparatus for treating running strands, a trough, a screw conveyor for propelling a particulate material longitudinally through the trough, the screw being at least partially omitted or cut away at a plurality of spaced points therealong to cause the piling oi the material at said cut away portions, and means for guiding astrand through each of such piles comprising an opening in a wall of the trough adjacent the cut away portions of the screw.

'7. In an apparatus for treating running strands, a trough, a screw conveyor for propelling a particulate material longitudinally through the trough, the screw being at least partially omitted or cut away at a plurality of spaced points therealong to cause the piling of the material at said cut away portions, means for guiding a strand through each of such piles comprising an opening in a wall of the trough adjacent the cut away portions of the screw, a second trough below the first, a screw conveyor in the second trough for propelling the particulate material in the opposite direction to that in which it moves in the upper trough, means for conducting the particulate material from the discharge end of the upper trough into the adjacent end of the assaaso conveying the material therefrom to the adiacent end of the upper trough.

8. in an apparatus for treating running strands, a trough, a screw conveyor ior propelling a particulate material longitudinally through the trough, the screw being at least partially omitted or cut away at a plurality oi spaced points there along to cause the piling oi the material at said cut away portions, means iorguiding a strand through each oi such piles comprising an opening in a wall of the trough adjacent the cut away portions of the screw, a second trough below the first, a screw conveyor in the second trough ior promlling the particulate material longitudinally oi the trough, the troughs being arranged with the upper trough; overhanging the lower trough so that particulate material overflowing the openings in the wall oi the upper trough falls into the lower trough.

9. In an apparatus for treating running strands, a trough, a screw conveyor ior propelling a particulate material longitudinally through the trough, the screw being at least partially omitted or cut away at a plurality oi spaced points therealong to cause the piling oi the material at said cut away portions, means ior guiding a strand through each of such piles comprising an opening in a wall of the trough adjacent the cut away portions oi the screw, a second trough below the first, a screw conveyor in the second trough for propelling the particulate material longitudinally oi the trough, and means disposed transversely of the path oi the strands for vibrating them as they pass over the lower trough-.1

10. In an apparatus for treating running strands, a trough. a screw conveyor tor propelling a particulate material longitudinally through the trough, the screw being at least partially omitted orcut away at a plurality of spaced points therealong to cause the piling oi the material at said cut away portions, means for guiding a strand through each of such piles comprising an opening in a wall of the trough adlacent the cut away portions of the screw, a second trough below the first, a screw conveyor in the second trough for propelling the particulate material longitudinally oi the trough, and guiding means below the openings in the wall of the upper trough for conveying overflowing particulate material from'said openings into the lower trough.

11. In an apparatus for treating running strands, a trough, a screw conveyor for propelling .a particulate material longitudinally through the trough, the screw being at least partially omitted or cut away at a plurality oi spaced points therealong to cause the piling oi the material at said cut-away portions, means for guiding a strand through each of such piles comprising an opening in a wall of the trough adjacent the cut-away the upper trough rails into the lower trough, and I elevator means communicating with the discharge end of the lower trough for conveying the material therefrom to the adjacent end of the pptr trou h 12. in an apparatus for treating running strands, a trough, a screw conveyor for propelling a particulate material longitudinally through the trough, the screw being at least partially omitted or cut away at a plurality of spaced points therealong to cause the piling oi the material at said cut-,away portions, means ior guiding a strand through each of such piles comprising an opening in a wall oi the trough adjacent the cut-away portions of the screw, a second trough below the first, a screw conveyor in the second trough for propelling the particulate material in the opposite .direction to that in which it moves in the upper trough, means for conducting the particulate material from the discharge end of the upper means lh transversely oi the path of the strands ior vibrating them as they pass over the lower trough, and elevator means communicating with the discharge and oi the lower trough for conveying the material therefrom to the adiacent end oi the upper trough.

it, in an apparatus ior treating running strands, a trough, a screw conveyor for propelling a particulate material longitudinally through the trough, the screw being at least partially omitted or cut away at a plurality of spaced points therealong to cause the piling of the material at said cut 'away portions, means for guiding a strand through each of such piles comprising an openportions of the screw, a second trough below the 00 first, a screw conveyor in the second trough for propelling the particulate material in the opposite direction to that in which it moves in the upper trough. means for conducting the portionlate material from the dlschargd'ond oi the upper trough into the adjacent end 'ofths lower trough,

ing in a wall of the trough adjacent the cut-away portions 0! the screw, 9. second trough below the first, a screw conveyor in the second trough for propelling the particulate material in the opposite direction to that in which it moves in the conveying the material therefrom to the adjacent end of the upper trough.

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

UNITED STATES PATENTS Number Name Date 703,197 Benny June 24, 1902 1,957,270 Keene et al May 1, 1934 1,988,687

Johnson July 81, 1934