US2164376A

US2164376A - Device for simultaneously spinning and twisting artificial silk threads

Info

Publication number: US2164376A
Application number: US143672A
Authority: US
Inventors: Berndt Karl
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-03-27
Filing date: 1937-05-20
Publication date: 1939-07-04
Anticipated expiration: 1956-07-04
Also published as: NL49171C; DE669034C; NL50534C; CH197247A; FR805394A; DE707772C; CH212984A; BE414629A; GB496268A; DE693246C; DE709333C; US2159961A; GB460744A; DE694848C; NL48708C; BE421679A; NL48788C; DE707771C; NL44805C; BE421678A

Description

July 4, 1939. K. BERNDT 2,164,375

DEVICE FOR SIMULTANEOUSLY SPINNING AND TWISTING ARTIFICIAL SILK THREADS Filed May 20, 1957 2 Sheets-Sheet 1 July 4, 1939. I K. BERND'I DEVICE FOR SIMULTANEOUSLY SPINNING AND TWISTING ARTIFICIAL SILK THREADS Filed May 20 1957 2 Sheets-Sheet 2 Patented July 4, 1939 UNITED STATES PATENT OFFlCE THREADS Karl Berndt, Tilsit-on-the-Memel, Germany Application May 20, 1937, Serial No. 143,672 In Germany May 23, 1936 7 Claims.

My invention relates to devices for simultaneously spinning and twisting artificial silk threads in which the threads issuing from the spinner head pass through a revolving container filled with coagulating solution and then into a stationary container serving to supply the coagulating solution in such a manner that the threads traverse a liquid column which rotates in the neighborhood of the spinner head and does not practically rotate at the point at which the threads leave the stationary container. Spinning devices of this kind are described in my copending applications, Serial No. 70,044, filed March 21, 1936, and Serial No. 143,673, filed May According to the present invention the stationary container of the spinning device has a stationary sleeve which projects into the revolving container and is provided at the lower end with a flange whose outer diameter is greater than the inner diameter of the opening of the potlike revolving container.

According to another feature of the invention, two cylindrical conduits are arranged concentrically within the above-mentioned sleeve. The inner conduit forms a passage through which thethread enters from the revolving container into the stationary container and coagulating liquid passes in the opposite direction. The outer conduit constitutes an additional supply tube through which also coagulating solution passes from the stationary container into the revolving container. This concentric supply tube is so designed as to prevent the coagulating solution from being rotated before entering the revolving container. The inner conduit may be designed according to the invention so as to rotate together with the revolving container. In this case the arrangement may be so designed that three concentric tubes establish the connection between the stationary container and the revolving container, of which the two inner tubes extend preferably close to the level of the coagulating liquid within the stationary container.

The advantages of the invention will appear upon reference to the following description of embodiments illustrated in the accompanying drawings in which I Fig. 1 represents an elevation, partly in section, of a spinning device according to the invention.

Fig. 2 shows a top view of the tubes entering the stationary container.

Fig. 3 shows a longitudinal sectional view of a 55 tube for guiding the thread which may be employed in connection with the arrangement shown in Fig. 1.

Fig. 4 shows the device in the position in which the spinning is started.

Referring to the drawings, the numeral 12 denotes the stationary container. It is connected through a hose 4| with a supply tank 42 which may, if desired, be raised or lowered. However, tank 42 is, as a rule, maintained in the position shown in Fig. 1 in which upon raising the container I2 the coagulating liquid flows from container l2 back into the supply tank 42.

The revolving pot-like container of the spinning device consists of two parts. The upper part I is detachably secured to the bottom part 30 by means of a bayonet locking consisting of a flange 3! of the upper part I and of lugs 32 arranged on the bottom part 30. Inside the bottom part 30 of the revolving container is arranged a spinner head 33 having a pluralityof perforations. The head 33 is placed on a spindle 34 of a driving motor 35. Motor 35 is mounted to the frame 39 of the spinning machine. The spindle 34 consists of a tube for supplying the viscous material to the head 33. The viscous material is supplied with the aid of a stationary tube 36, for instance of rubber, which has a conical end engaging in a conical bore of the revolving spindle 34. The tube 36 is connected to the motor 35 by a holder 3?, preferably in such a manner as to enable an adjustment of the tube 36. Connected to the tube 36 is a hose 38 for supplying the viscous material.

The numeral 2 denotes a sleeve which is secured to the bottom of the stationary container l2 by means of a nut 18. The sleeve 2 has a flange 3 at its lower end. The outer diameter of this flange is greater than the upper opening 4 of the revolving container I. On the sleeve 2 is rotatably mounted a disc 5 which covers the opening of the revolving container I. Within the sleeve 2 extends a tube 6 which is held in position by radially protruding lugs [3, I4, l5 of sleeve 2 (Fig. 2). Between these lugs are openings 1 for the passage of the coagulating solution from the stationary tank l2 into the revolving container. The lugs I 3, l4 and I5 prevent the solution passing through openings 1 from rotating about the axis of the spinning device. The coagulating solution, therefore, flows from the stationary into the revolving container in a direction parallel to the axis of the spinning device.

Within the stationary tube 6 extends another tube 8 (Figs. 1 and 3) which rotates with the revolving container l. The tube 8 is provided with sliding surfaces [6 and I! at the periphery thereof and is held by a ring I8 which carries two plate or leaf springs I9 and 20. These springs engage in an annular groove arranged in the upper part I of the revolving container, and exert such a pressure against the wall of part I as to cause by friction a rotation of the tube: 8 when the container I revolves. If this friction does not suflice, a stop (not shown) arranged in the annular groove 2I forcibly causes the tube 8 to rotate. A substantial part of the coagulating solution flows from container I2 through the openings 1 while being prevented by lugs I3, I4 and 15 from transferring the rotation of the solution in the revolvable container into the stationary container. The top opening of the revolving container and the cover plate 5 are designed to leave interstices through which the superfluous coagulating solution leaves the revolving container in the direction indicated by the arrow 24.

The operation of the device is as follows:-

During the spinning process the viscous material issues from the openings of the spinner head 33. It is solidified and twisted within container 30, I in a liquid column which rotates at the same speed as the spinner head. Consequently, the mechanical strain of the threads, which are still sensitive when issuing from the head, is extremely small. The threads then pass from the revolving portion of the liquid column into a non-revolving portion inside the stationary container and thence over a roller to a reel (both not shown) on which the product is wound. During this operation the interior of the revolving container is completely filled with coagulating solution.

The non-revolving portion of the liquid in the stationary container I2 acts in such a manner as to brake the twist of the thread passing therethrough. It may be advantageous to neutralize in part this braking effect which causes the twist point to be displaced in the direction towards the spinner head. This may be accomplished according to the invention by extending the tubes serving to guide the thread a considerable amount into the stationary container I2, as shown in Fig. 1.

The sucking efiect of the smooth insert tube 8 may be reduced or entirely avoided by a particular design of the bore. Thus, instead of the tube 8 shown in Fig. 1, the one shown in Fig. 3 may be employed. This substitute tube has an undulated bore. When the device is at rest, the large cross-section 25 is available for threading, Whereas the active or sucking cross-section 26, which is effective during the rotation, may be made as small as desirable. The tube according to Fig. 3 forms, during the rotation, .a sort of liquid seal owing to the liquid distribution caused by the centrifugal forces, so that the major portion of the coagulating solution is supplied through the openings "I.

The starting of the spinning device is efiected in the manner shown in Fig. 4. The bayonet locking 3|, 32 is first loosened and then the top part I of the revolving container is raised together with container I2. The solution in container I2 now flows back into the supply tank 42. The spinning is now started with the head at rest, the quantity of solution necessary for the starting being supplied to the bottom part 30 of the revolving container through a syphon 40 (Fig. 4). Through the inner tube 8, serving to guide the thread, a thin wire is passed, and one end of the thread is stuck to the wire. By means of the wire, the thread then is drawn out through the top part of the revolving container and through the stationary container. Finally the syphon 40 is removed from the bottom part of the revolving container and the top part I of the same is lowered together with container I2 and then coupled to the bottom part 30 of the revolving container. Now the stationary and the revolving containers are automatically filled with coagulating liquid returning from tank 42 through hose 4| and the spinning process proper may begin.

I claim as my invention:

1. A device for simultaneously spinning and twisting threads from viscous material, comprising a hollow spindle for supplying the viscous material, said spindle having a multiple orifice spinning head at its outlet end, means for rotating said spindle, a pot-like rotary container for coagulating solution coaxially disposed on said spindle so as to surround said spinning head and to rotate therewith, a stationary container for supplying coagulating solution to said rotary container, said stationary container being coaxially disposed above said rotary container, a sleeve connecting said stationary and said rotary container so as to allow the formation of a continuous solution column which rotates at its bottom with said rotary container and remains nonrotative at its top within said stationary container, a tubular body arranged centrally in said sleeve, said body forming a passage for the thread and leaving between said body and said sleeve an interstice forming a supply duct for coagulating solution, and bafiles disposed in said interstice for preventing the solution passing through said interstice from revolving.

2. A device for simultaneously spinning and twisting threads from viscous material, comprising a hollow spindle for supplying the viscous material, said spindle having a multiple orifice spinning head at its outlet end, means for rotating said spindle, a pot-like rotary container for coagulating solution coaxially disposed on said spindle so as to surround saidspinning head and to rotate therewith, said rotary container having an outlet for discharging coagulating solution, a stationary container for supplying coagulating solution to said rotary container, said stationary container being coaxially disposed above said rotary container, a stationary sleeve connecting the bottom of said stationary container with the top portion of said rotary container so as to allow the formation of a continuous solution column which rotates at its bottom with said rotary container and remains non-rotative at its top within said stationary container, a tubular body arranged within said sleeve so as to form a passage for the thread, means for rotatably securing said body in coaxial position with respect to said sleeve, means for connecting said body with said rotary container in order to impart a rotation to said body, and resistive means disposed in the interstice between said body and said sleeve for impeding a rotation of the coagulating solution flowing from said stationary container through said interstice into said rotary container.

3. A device for simultaneously spinning and twisting threads from viscous material, comprising a hollow spindle for supplying the viscous material, said spindle having a multiple orifice spinning head at its outlet end, means for rotating said spindle, a pot-like rotary container for coagulating solution coaxially disposed on said spindle so as to surround said spinning head and to rotate therewith, said rotary container having an outlet for discharging coagulating solution, a

stationary container for supplying coagulating solution to said rotary container, said stationary container being coaxially disposed above said rotary container, a stationary sleeve connecting the bottom of said stationary container with the top portion of said rotary container so as to allow the formation of a continuous solution column which rotates at its bottom with said rotary container and remains non-rotative at its top within said stationary container, a rotary body arranged centrally within said sleeve so as to form a passage for the thread, said body having an undulated bore so as to have a straight-through cross section of smaller size than the total cross section available for threading-through the thread when starting the spinning operation, and resistive means disposed in the interstice between said body and said sleeve for impeding a rotation of the coagulating solution flowing from said stationary container through said interstice into said rotary container.

4. A device for simultaneously spinning and twisting threads from viscous material, comprising a hollow spindle for supplying the viscous material, said spindle having a multiple orifice spinning head at its outlet end, means for rotating said spindle, a pot-like rotary container for coagulating solution coaxially disposed on said spindle so as to surround said spinning head and to rotate therewith, a stationary container for supplying coagulating solution to said rotary container, said stationary container being coaxially disposed above said rotary container, a sleeve connecting said stationary and said rotary container so as to allow the formation of a continuous solution column which rotates at its bottom with said rotary container and remains non-rotative at its top within said stationary container, two concentric tubular conduits arranged in said sleeve, the outer of said conduits forming with said sleeve an interstice for the passage of coagulating solution from said stationary to said rotary container and being designed as a holder for said inner conduit, said inner conduit forming a passage for the thread, and resistance bodies disposed in said interstice for preventing a rotation of the solution flowing through said interstice.

5. A device for simultaneously spinning and twisting threads from viscous material, comprising a hollow spindle for supplying the viscous material, said spindle having a multiple orifice spinning head at its outlet end, means for rotating said spindle, a pot-like rotary container for coagulating solution coaxially disposed on said spindle so as to surround said spinning head and to rotate therewith, said rotary container having an outlet for discharging coagulating solution, a stationary container for supplying coagulating solution to said rotary container, said stationary container being coaxially disposed above said rotary container, a sleeve connecting the bottom of said stationary container with the top portion of said rotary container so as to allow the formation of a continuous solution column which rotates at its bottom with said rotary container and remains non-rotative at its top within said stationary container, a tubular body arranged centrally within said sleeve to form a thread passage, said body extending close to the solution level of said stationary container, and bafiling means disposed in the interstice between said body and said sleeve for preventing from rotation the solution flowing from said stationary container through said interstice into said rotary container.

6. A device for simultaneously spinning and twisting threads from viscous material, comprising a hollow spindle for supplying the viscous material, said spindle having a multiple orifice spinning head at its outlet end, means for rotating said spindle, a rotary container for coagulating solution arranged coaxially with said spindle and having an outlet for discharging said solution, said rotary container consisting of a potshaped bottom part a top part detachably connected with said bottom part, said bottom part being mounted to said spindle so as to surround said spinning head and to rotate therewith, a stationary container for supplying coagulating solution to said rotary container, said stationary container being disposed coaxially above said rotary' container, a sleeve mounted to the bottom of said stationary container and extending into said top part of said rotary container, said sleeve forming a communication duct allowing the for mation of a continuous solution column which rotates at its bottom with said rotary container and remains non-rotative at its top within said stationary container, a flange disposed at the lower end of said sleeve and designed to rotatably connect said stationary container with said top part of said rotary container in order to allow raising said stationary container and said top part as a unit from said bottom part, a tubular body arranged in said sleeve to form a thread passage, and baffling means disposed in the interstice between said body and said sleeve for preventing from rotation the solution flowing from said stationary container through said interstice into said rotary container, said body and said bafiling means forming part of said unit.

'7. With a device for spinning viscous material from a multiple orifice spinning head into a continuous column of liquid rotating at its bottom and non-rotating at its top, in combination, a lower rotary container having a discharge outlet and containing said spinning head, an upper stationary supply container, a communication duct arranged between said upperand lower containers in the rotation axis of said lower container, said duct forming a passage for the thread and for said liquid, a second communication duct designed for additionally supplying liquid to said rotary container, said second duct surrounding said first duct so as to form an interstice having a larger cross section than the opening of said first duct in order to supply during the spinning operation the major part of the liquid to said rotary container, and means in said interstice to prevent a rotation of the liquid supplied through said interstice.

KARL BERND'IZ,