US2351110A - Apparatus for liquid treatment of filamentary material - Google Patents

Description

June 13, 1944. H. o. DAVIDSON ETAL 2,351,110

APPARATUS FOR LIQUID TREATMENT OF FILAMENTARY MATERIAL Filed April 30'. 1942 INVENTOR. HDEHRT U .UFW/DSUN HENR- YJ.

MCUEFMUTT ATTO Patented June 13, 1944 APPARATUS FOR LIQUID TREATllh/ENT F JFKLAMEN'KARY MATERIAL Hobart ll. Davidson, Swarthmore, and Henry J. ll llclllermott, Prospect Park, lla., assignors to American Viscose Corporation, Wilmington,

Deb, a corporation of Delaware Application April 30, 1942, Serial No. 441,202 6 Claims. (o1. 68-147) filaments, twisted or untwisted, spun yarns, cords or the like.

It is an object of the invention to provide a device which is capable of efficiently treating filamentary material uniformly with the desired liquid with a minimum expenditure for equipment outlay, for the liquid itself, and for the cost of pumping it. A further object of the invention is to maintain good liquid contact with the filamentary material throughout the length to be treated. Another object is to provide such a device presenting a minimum of frictional contact with the thread treated. A further object is to provide means for threading such a device in an improved andefi'ective manner. Further objects of the invention will be apparent from the drawing and the description thereof hereinafter.

In the drawing, illustrative of the invention,

Figure 1 is a side view of the outer shell or casing of the device,

Figure 2 is a top view of the outer shell,

Figure 3 is a side view of the inner shell or casing of the device,

Figure 4 is a top view of the inner shell,

Figure 5 is a front view of a guide shown attached to the bottom of the device in Figure 1,

Figure 6 isa top view of the guide,

Figure 7 is a top View of the assembled device with the shells positioned for threading, and

Figure 8 is a top view of the assembled device with the shells in closed position for operation.

The device shown in the drawing comprises essentially two shells, one of which fits rotatably within the other. Figure 1 shows the outer shell 2-whlch has an open end at the top, a liquid inlet 3 at the side, and a central perforation 4 in the bottom for accommodating the filamentary material as it enters or leaves the liquid treating cell. The foot of the outer shell is provided with a slot 5 entering from one side thereof for accommodating in a readily detachable manner back and sides of the perforation form with a thread-guiding channel I! formed in the body of the guide a continuous guiding surface for filamentary material.

As more clearly shown in Figure 2, a continuous vertical slot I2 is formed in the wall of the outer shell, and communicates with a preferably convergent slot l3 formed in the bottom of the outer shell which is joined to the central perforation t therein by a narrow extension IQ of the slot, The top edge of the shell is cut away at It about the arc of approximately though the size of this angle is not in any way critical. One end l5 of this cut away portion is formed as an inclined plane, more particularly shown in Figure 1, while the other It may be vertical.

The inner shell, which is adapted to fit rotatably within the outer shell 2 shown in Figure 1 comprises an open-ended cylindrical body portion ll, a bottom It! centrally perforated at IS, a vertical slot 20 communicating with the perforation l9 at the bottom in a manner similar to the vertical slot of the outer shell. A slot 2| extends horizontally about the shell at a distance from the bottom such that it is in alignment with the inlet 3 of the outer shell. The inner shell may also have an overflow opening 22 and it is provided with a tongue or lever 23 which preferably has one of its side faces .24 inclined to cooperate with the inclined face IS in the cut away portion ll of the outer shell in Figures 1 and 2.

The assembled device is shown in Figure 7 with the vertical slots l2 and 20 in both the inner and outer shells in approximate registry so that the device may be readily threaded merely by inserting a length of the l ilamentary material bodily into the central chamber 25 within the inner shell through the communicating slots. After the threading of the device, the lever 23 may be turned to the position of Figure 8 in which event the slot 20 in the inner shell is closed by the wall of the outer shell 2 and conversely the slot l2 in the outer shell is closed by the wall of the inner shell I! except at the overfiow opening 22 therein. The inlet opening 3 of the outer shell is preferably in alignment with the inlet slot 2| of the inner shell at all times so that the pressure of the liquid does not tend to force the innershell out of the outer shell. The inclined surface 24 on the leading edge of the turning lever 23 cooperates with the inclined face I5 of the cutaway portion in the top edge of the outer shell so that the inner shell is forced downwardly by the exertion of pressure on the lever as it is any suitable support, such as a twisting machine,

winding machine, artificial silk spinning machine, and the like. The device may be mounted vertically or at any angle to the horizontal and the filamentary material may run upwards through the device or downwards therethrough.

A There is only one point of thread bearing which is on the guide at the bottom of the device. In normal operation, most of the surplus liquid will fiow through the perforation at the bottom of the device, letting any momentary excessive quantities resulting from surges in the fluid supply system to be handled by the overfiow opening so that, constant liquidlevel is maintained. The guide surface H is preferably curved as shown to divert any liquid tending to flow down the filamentary material away from it into a gutter or catch-basin positioned therebelow. The position of the liquid inlets'3 and 2| may be changed as desired, the position shown in Figures 1 and 3 being preferred where the filamentary material travels upwardly and is to be treated by a medium for raising its temperature, which treatment may advantageously be applied to filaments while undergoing stretching in processes known as stretch-spinning processes.

The liquid treating device of this invention may be employed to transfer heat to the filamentary .material by means of a heated liquid or to remove heat by means of a cooling liquid, to wash freshly spun artificial silk filamentary material, to otherwise treat such material, such as to desulphurize in the viscose process, or they may be employed to apply lubricating, softening, or conditioning agents for both artificial and natural filamentary material. One or more of the devices of the invention may be attached to artificial silk spinning machines or other types of machines for handling both artificial and natural filaments or one or more such devices may be assembled into a unitary machine specifically designed for performing the specific liquid treatment of the filamentary material therein.

While a preferred embodiment of the invention has been shown, it is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as defined by the appended claims.

What I claim is:

1. An apparatus for treating filamentary material with liquids comprising an outer casing having an internal generally cylindrical surface, an inner casing having an external generally cylindrical surface and rotatably mounted in the outer casing with their-cylindrical surfaces in liquid sealing engagement, openings at opposite ends of said casings for entrance and discharge of the filamentary material with respect to the interior of the inner casing, the opening at the lower end of said chamber being relatively small to allow passage of the material with a minimum passage of liquid, a longitudinal slot in the wall of each casing communicating with the openings at the ends of its respective casing, an overflow opening extending through the side wall of the inner casing, means for rotating one casing with respect to the other to bring the slot of the outer casing alternately into communication with the slot and overflow opening of the inner casing, and liquid inlet passages in said casings arranged to be in communication at least when the overflow opening is in communication with the slot in the outer casing. 2. An apparatus for treating filamentary material with liquids comprising an outer casing having an internal generally cylindrical surface, an inner casing having an external generally cylindrical surface and rotatably mounted in the outer casing with their cylindrical surfaces in liquid sealing engagement, openings at opposite ends of said casings for entrance and discharge of the filamentary material with respect to the interior of the inner casing, the opening at the lower end of said chamber being relatively small to allow passage of the material with a minimum passage of liquid, alongitudinal slot in the wall of each casing communicating with the openings at the ends of its respective casing, an overflow opening extending through the side wall of the inner casing, means for rotating one casing with respect to the other to bring the slot of r the outer casing alternately into communication with the slot and overflow opening of the inner casing, and liquid inlet passages in said casings arranged to be in communication substantially throughoutthe relative rotatory motion of said casings.

3. An apparatus for treating filamentary ma; terial'with liquids comprising two generally cylindrical shells, one rotatably mounted within the other with its surface in liquid sealing engagement with the inner surface of the other, forming a liquid-treating chamber,'openings at opposite ends of said shells for entrance and discharge of the filamentary material with respect to the chamber, a longitudinal slot in the wall of each shell communicating with the openings at the ends of its respective shell, means for rotat-' ing one shell with respect to the other to bring its slot into and out of communication with the slot of the other, and liquid-inlet passages arranged in said shells to be in communication in a position in which the slots are out of commu nication, and cooperating means on said shells for urging the inner shell into tighter engagement with the outer shell upon relative rotationof the shells to the position in which the slots are out of engagement.

4. An apparatus for treating filamentary material with liquids comprising two generally cylindrical shells, one rotatably mounted within the other with its surface inliquid sealing engagement with the inner surface of the other, forming, a liquid treating chamber, openings at oppositeends of said shells for entrance and discharge of the filamentary material with respect to the chamber, a longitudinal slot in the wall of each shell communicating with the openings at the ends of its respective shell, means for.

upon relative rotation of the shells to the posi-' tion in which the slots are out of engagement.

5. An apparatus for treating filamentary material with liquids comprising two generally cylindrical shells, one rotatably mounted within the other with its surface in liquid sealing engagement with the inner surface, forming a liquid-treating chamber, openings at opposite ends of said shells for entrance and discharge of the filamentary material with respect to the chamber, 1

respective shell, a lever on the inner shell for rotating it with respect to the outer shell to bring the slots of the two shells into and out of communication with each other, liquid-inlet passages in said shells arranged to be in communication in the position in which the slots are out of communication, an inclined surface on the outer shell adapted to cooperate with the lever of the inner shell to urge the inner shell into tighter engagement with said outer shell upon relative rotation of theshell to the position in which their slots are out of engagement.

6. An apparatus for treating filamentary material with liquids comprising two generally cylindrical shells, one rotatably mounted within the other with its surface in liquid sealing engagement with the inner surface, forming a liquidtreating chamber, openings at opposite ends of said shells for entrance and discharge of the filamentary material with respect to the chamber, a longitudinal slot in the wall of each shell communication with the openings at the ends of its respective shell, a lever on the inner shell for rotating it with respect to the outer shell to bring the slots of the two shells into and out of communication with each other, liquid-inlet passages in said shells arranged to be in communication substantially throughout the relative rotatory motion of said casings, and inclined surface on the outer shell adapted to cooperate with the lever of the inner shell to urge the inner shell into tighter engagement with said outer shell upon relative rotation of the shell to the position in which their slots are out of engagement.

H. O. DAVIDSON. HENRY J. McDERMOTT.

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