US823009A

US823009A - Spinning-head for forming filaments of viscose or similar material.

Info

Publication number: US823009A
Application number: US29811506A
Authority: US
Inventors: Montgomery Waddell
Original assignee: SILAS W PETTIT
Current assignee: SILAS W PETTIT
Priority date: 1906-01-27
Filing date: 1906-01-27
Publication date: 1906-06-12
Anticipated expiration: 1923-06-12

Description

No. 823,009. v PATENTED JUNE 12, 1906.

I I M. WA-DDELL. SPINNING HEAD FOR FORMING FILAMENTS 0F VISGOSE 0R SIMILAR MATERIAL. APPLICATION FILED JAN. 27. 1906.

2 SH EETSSHEET 1.

I TTOBNEV.

No.4823,009. f- Y 'PATENTED JUNE 12, 1906. M. WADDELL. N

SPINNING HEAD FOR FORMING FILAMENTS OF IVISGOSE 0 SIMILAR MATERIAL.

gum/M 01 I Jlozziganzecy mall {W irnn STATES MONTGOMERY PATENT OFFICE.

'ADDELL. OF XElV YORK, X. Y., ASSIGNOR TO SILAS 1V. PETTlT, OF PHILADELPHIA, PEXXSYLVAXIA.

Specification of Letters Patent.

Patented June 12, 1906.

Application filed January 27, 1906. Serial No. 298.115.

To all whom, it may concern.-

Be it known that I. MoXTooMERY WAD- DELL, a subject of the King of Great Britain, and a resident of Xew York, county and State of New York, have invented certain new and useful Improvements in Spinning- Heads for Forming Filaments of Viscose or Similar Material, of which the following is a full, clear, and exact description.

My invention relates to the construction of spinning-heads which are used for forming filaments of metamorphosed cellulose or similar material in which viscose or a similar viscous material is forced under pressure through one or more openings in a perforated spinneret into a coagulating bath, the action of the bath being to change or transform the viscous filaments into a solid filament of artificial silk or similar material.

The viscose which is employed in this process is a very unstable compound, being coagulated by many substances, including almost all of the metals, and it follows that the metal of the pipes and of the spinning-head, through which it is conducted from the source of supply to the spinneret, thus act upon their contact therewith to form small clots or particles ofjelly-like impurities, which clog or close the apertures in the spinneret and interfere with the flow of the viscose therethrough.

One of the objects of my invention is to prevent the passage to the spinneret of any impurities which may be of a size to clog or close the apertures therein.

A further object of my invention is to provide a construction in which the various parts may be easily removed for any purpose, as for cleaning the same or for substituting therefor different parts adapted for the production of different kinds or sizes of filaments.

A further object of my invention is to make a spinneret and a strainer of a she e to with stand the high pressure to whic they are subjected in the spinning-head Without becoming unduly distorted.

A further object of my invention is to provide a spinning-head with means for arresting the passage of these impurities, said means being of such a material and being so located with respect to the spinneret that no coagulation or forming of impurities will take j place between the said means and the spinnere-t.

l Further objects will appear in the descrip- 1 tion of the invention and of the operation thereof, as further set out in the accompany- 1 ing specification.

I In the drawings forming a part of this i specification, Figure 1 is a longitudinal section of my improved spinning-head. Fig. 2 f is a transverse section thereof through the spinneret, taken on the line 2 2 of Fig. 1. Fig. 3 is a sectional view of a modified form of my invention, and Fig. 4 is an end view of Fig. 3. Fig. 5 is a sectional view of a further modification, and Fig. 6 is an end view thereof.

Referring first to the construction illustrated in Figs. 1 and 2, 1 indicates a tube or pipe-to the end of which is secured by any suitable meansas, for instance, by screwthreads 2a head 3. the face of which is provided with a seat 1 for the gasket 5. To the head 3 is secured by any suitable means. as by screw-threads 6, a coupling 7, provided with an inwardly-extending flange S, the inner side of which forms a seat 9 and the outside of which is provided with a knurled portion 10, by which the same may be readily adjusted and secured on the head 3.

11 indicates the spinneret, through which the viscose or similar material is injected into the coagulating-bath, and is'formed. preferably, in the shape of a cap consistin of a cylindrical body portion 12, one end of which is provided with a flange 13 and the other end of which is substantially closed by the face 14. The face 14 is, however, provided with one or more perforations or apertures 15, through which the viscose or similar'material emerges from the spinning-head.

16 indicates a strainer which is similar in shape to the spinneret and consists of a cylindrical bod portion 17, one end of which is provided with flanges 18 and the other end of which is substantially closed by the face 19. The face 19 is provided with a large number of perforations or apertures 20, smaller in size than the perforations in the spinneret. This strainer is adapted to prevent those impuri- I ties which would not pass through the perforations 15 in the spinneret from being carried inthe viscose beyond the strainer 16.

The flange 13 of the spinneret 11 rests against the seat 9 of the coupling 7, and the body portion 12 of the spinneret is of a size to loosely fit the ening in the front of the said coupling 7. T 1e flange 18 of the strainer 16 is seated on the gasket 5, and the body portion is of a size to loosely fit within said gasket and within the chamber formed in the head by the raised seat 4. Between the flanges 9 and 18 is a gasket 21.

From the above it will'be readily understood that when the coupling 7 is secured to the head 3 with the flanges of the spinneret and of the strainer tightly clamped between the seats 4 and 9, carried by the head 3, and the coupling 7, with the gaskets 21 and 5 between said flanges and between the seat 4 and flange 18, respectively, and the viscose is forced through the supply-pipe 1, any impurities larger than the apertures in the strainer 16 will be sto ped by the strainer, and consequently will be prevented from reaching the apertures 15 in the spinneret 11.

- Moreover, it will be seen that with the s .in-

neret and the strainer made in the form il ustrated abovethat is to say, of a general cy' lindrical form with retaining-flanges at one end of the cylinderand the perforated face inclosing the other end of the cylinder-the parts can be assembled accurately with a minimum of care. Thus the cylindrical body portion of the strainer serves to centerand position the packing-ring 5 in position on flange 18 and to position the strainer with respect to the seat 4. In the same manner the cylindrical body portion of the spinneret positions the flange 13 on the seat 9 of the coupling 7.

The strainer and spinneret are preferably made of platinum, which is not acted upon by the substances used in the process, and they must also be very thin, so that the small erforations therein may be drilled of uniorm size. In View of the severe pressure to which both the strainer and the spmneret are subjected in the spinning-head by the passage of the viscous material therethrough the said arts must, however, be stiff and unyielding. I have found that a thin platinum spinneret Cor strainer ma be made sufficlently stifl to retain its s a e when in use by providing it with the cylin rical body portion between the perforated portion and the 1eldge by which it Is retained in the spinningead.

While I have shown in Fig. 1 a construction in which the strainer extends in a direction toward the head 3, I have found the strainer will withstand greater pressures when arranged in the opposite manner. Such a modified form is illustrated in Figs. 3 and 4, in which the body of both the strainer and the spinneret extend in a direction away from the head 3. The head 3 ma not be provided with an outwardly-exten ing seat in the manner shown in connection with the 5 may rest directly upon the face of said head. The coupling 7 is made longer than the coupling 7, (shown in Fig. 1,) and the ring 22 is disposed between the flange of the strainer 16' and the gasket 21 in order to provide a sufficient s ace for the body of the strainer between tl ie flanges of the spinneret and the strainer.

In Figs. 5 and 6 the spinneret and strainer are arranged to extend away from the head; but the body of the strainer 16 is made slightly smaller than the spinneret 11, so as to telescope within the letter. In this manner the rubber or gasket 18' is practically inclosed, and the viscose is not permitted to flow over its surface. The rubber is therefore not so rapidly decomposed or deteriorated by the viscose, and the small impurities formed by its contact with the viscose are not permitted to be carried to the spinneret. In other words, between the strainer and the spinneret the viscose does not contact with anything except the platinum, which does not act and is not acted upon by the viscose. Therefore no new clots of coagulated viscose are formed between the strainer and the spinneret, and the flow of viscose through the spinneret will not be interrupted. This arrangement provides, then, for the passage of the viscose through a platinum chamber between the strainer and the spinneret, so that no new impurities are formed in the viscose after it leaves the strainer.

In other respects the operation of the modi fications shown in Figs. 3 to 6 is similar to the operation of the apparatus shown in Fig. 1, the parts being also designed to he self-centering in order to, facilitate the cleaning of the same and the substituting of strainers and spinnerets of different sizes or character istics when desired.

While I have shown several embodiments of my invention, I do not intend to limit my invention to the exact forms shown, as my invention may be carried out by any means in which the viscose is prevented from becomin coagulated between the straining means and the filament-forming means. Having thus described my invention, what- I claim, and desire to protect by Letters Patent of the United States, is-

1. In a machine for forming filaments of metamorphosed cellulose, the combination in a spinning-head, of a platinum spinneret and a platinum strainer, telescoping within said spinneret, said spinneret and strainer forming between them a platinum chamber to prevent the coagulation of the viscose between the said strainer and the point of its ejection from the said spinneret.

2. In a machine for forming filaments of metamorphosed cellulose, a spinneret having a cylindrical body portion, and having a flange'at one end thereof, a strainer also hav- IIC ing a cylindrical body portion and also having a flange at one end, the strainer telescoping withinsaid spinneret with the said flanges adjacent each other.

3. In a machine for forming filaments of metamorphosed cellulose, the combination of a spinneret having a cylindrical body portion, and a platinum strainer, also having a cylindrical body portion, said spinneret and strainer having flanges at one end thereof, and a gasket interposed between said flanges.

4. In a machine for forming filaments of metamorphosed cellulose, the combination of a head, a coupling fitting over said head and astrainer and a spinneret both clamped between said head and said coupling.

5. In a machine for formingfilaments of metamorphosed cellulose the combination of a head, a coupling fitting over said head, a

cup-shaped strainer and a cup-shaped spinneret both clamped between said head and said coupling.

' 6. In a machine for forming filaments of metamorphosed cellulose, the combination of a head, a coupling fitting over said headand a strainer and a spinneret clamped between said head and said coupling, said strainer and spinneret being both cup-shaped and extending in a direction away from said head.

7. In a device for forming filaments of metamorphosed cellulose, the combination of a head, a coupling adapted to be secured to said head, and seats on both said coupling and said head, with a flanged spinneret and a flanged strainer secured by their flanges between said seats.

the flan es of said spinneret to hol 8. In a machine for forming filaments of metamorphosed cellulose, the combination of a head, and couplin threaded over said head, with a perforate cup-shaped spinneret provided with flanges and projecting through said coupling, and a strainer also cup-shaped I and provided with flanges, both the spinneret and the strainer being retained by, their flanges between said head and said coupling.

9. In a device for forming filaments of metamorphosed cellulose, a head provided on its front side with a seat, a gasket in contact with said seat, a flanged strainer having its flanges resting against said gasket, a

'said head engaging the flanges of said spinneret. In witness whereof I have hereunto set my hand this 26th day of January, A. D. 1906.

MONTGOMERY WADDELL.

Witnesses:

ALEXANDER PARK,- ALSTON B. MOULTON.