US2996785A

US2996785A - Apparatus for preventing size accumulation on size box rolls

Info

Publication number: US2996785A
Application number: US785192A
Authority: US
Inventors: Thomas F Suggs
Original assignee: Cocker Machine and Foundry Co
Current assignee: Cocker Machine and Foundry Co
Priority date: 1959-01-06
Filing date: 1959-01-06
Publication date: 1961-08-22
Anticipated expiration: 1978-08-22

Description

Aug. 22, 1961 T. F. susss 2,996,785

APPARATUS FOR PREVENTING SIZE ACCUMULATION ON SIZE BOX ROLLS Filed Jan. 6, 1959 5i? I 51 1 3,4, 0 \1 I [all I 10 15 INVENTOR. 720/722; 1 7 Sigjs,

A TTORNEYS.

United States Patent 2,996,785 APPARATUS FOR PREVENTING SIZE ACCUMU- LATION 0N SIZE BOX ROLLS Thomas F. Suggs, Gastonia, N.C., assignor to Corker Machine & Foundry Company, Gastonia, N.C., a corporation of North Carolina Filed Jan. 6,1959, Ser. No. 785,192 Claims. (CI. 28-28) This invention relates to size boxes for applying size to textile materials, and more particularly to size boxes having reservoirs containing heated liquid size, into which yarn, fabric or any other solid sheet material is immersed, in order to impregnate the sheet with the liquid. More specifically, this invention relates to slashers in which a sheet of a plurality of parallel ends of yarn is treated with a heated liquid such as size or the like, in order to impart strength to the yarn.

Conventionally, size boxes operate with one or more rolls in a submerged or partially submerged condition, and as the roll rotates, size is picked up and lifted on the surface of the roll. Concurrently, size is squeezed out of the material and, in continued operation, some of the size tends to flow down along the end of the size box roll, ultimately reaching a position (such as the end of the roll, for example) where the temperature is considerably lower than the temperature at which the liquid size congeals. As further size is continuously squeezed out of the yarn, it is forced to flow over the ends of the roll, and congealed or solidified size gradually accumulates. When the accumulation becomes sufiiciently large the centrifugal force created by the speed of the roll throws the solid, congealed size off the roll. This is a source of trouble and annoyance.

It is accordingly an object of this invention to provide an apparatus which overcomes the foregoing disadvantages. Still another object of this invention is to provide a novel means for eliminating the accumulation of solid size on the ends of the rolls of the size box.

A more specific object of this invention is to counteract the eifect of the size or starch that is squeezed ofi the yarn or cloth in the course of operation of the size box, eliminating the congealing of size on the endsof the roll, with reliability and economy.

Still another object of this invention is to provide an apparatus for eliminating the congealing effect just referred to, which apparatus operates selectively in accordance with the speed of operation of the size box, in order to provide efficient and economical operation at a variety of speeds.

Still another object of this invention is to provide an apparatus of the character just indicated, which includes an automatic means for disconnecting the anti-congealing apparatus when the size box is stopped.

Other objects and advantages of this invention will further become apparent hereinafter and in the drawings whereof:

FIG. 1 is a plan view of a specific form of apparatus constructed in accordance with this invention, with the shafts of the nip rolls removed in order to illustrate the steam jets more clearly,

FIG. 2 is a side elevation of the apparatus of FIG. 1, with certain of the parts shown in section, and also including a diagrammatic disclosure of the driving and controlling means for the size box and for the apparatus which eliminates congealing of size, and

FIG. 3 is a partial sectional view taken as indicated by the lines and arrows 'III, III which appear in FIG. 2.

The following description is directed to the specific form of the invention as illustrated in the drawings, and is not intended to limit the scope of the invention which is defined in the appended claims.

Turning now to the specific form of the invention selected for illustration in the drawings, the number 10 designates a size box containing size liquid L having an upper surface S. The size box is provided with a heating jacket 11 fitted with steam connections 12 for maintaining the starch or size in a liquid condition. The size box 10 is also provided with a plurality of boil pipes 13 which contain steam and which may be perforated in order to introduce steam in controlled and distributed quantities into the size.

Fixed upon shafts and supported for rotation thereon are a feed roll 20, an immersion roll 21, upper and

lower quetsch rolls

22, 23, and another pair of upper and

lower quetsch rolls

24, 25. As appears in FIG. 2, the yarn Y passes over the roll 20 and under the immersion roll 21, which extends beneath the surface S of the liquid size L. The yarn then moves upwardly through the nip between the

quetsch rolls

22, 23, and then moves generally horizontally through the nip between the

quetsch rolls

24, 25.

Pipe 30 has branches 31 at each side of the size box, beyond the ends of the

quetsch rolls

22, 23. Each branch 31 terminates in a nozzle 32 constructed and arranged to direct a spray of steam against the end surface of each

quetsch roll

22, 23. Similarly, the pipe 30 has other branches 33, each of which terminates in a nozzle 34 arranged for directing a spray of steam against the corresponding end surfaces of the quetsch rolls 24, 25.

The steam pipe 30 is provided with a solenoid valve 40, and a reducing valve 41, while the branches 31 are provided with throttling valves 42. All such valves control the flow of steam to the end walls of

quetsch rolls

22, 23. Similarly, the branches 33 are provided with throttling valves 43, through which steam flows from the pipe 30. a

The pipe 30 is also provided with a by-pass 50 having a solenoid valve 51 and a controlling valve 52. Both solenoids 40 and 51 are connected electrically to the apparatus which operates the size box, as will further appear.

Referring particularly to FIG. 2, the number 60 designates a slasher motor which is operated by an electric rheostat 61 connected by lines 62 and 63 to a source of electric current. Rheostat 61 has a contact arm 61a and has a terminal 64 representing an off position, a terminal 65 representing crawl speed, and a terminal 66 representing full running speed. The numbers 70, 71 and 72 represent electrically conducted strips which are in contact with the arm 61a. The terminal 65 is connected electrically through the solenoid 51, the terminal 66 is connected electrically through the solenoid 40, and the terminal 64 is free of any connection to either of such solenoids. I

In operation, the size liquid is brought to a proper temperature and the slasher is started by swinging the arm 61a into contact with the contact point '65, thereby throwing the slasher motor 60 into crawl speed. Concurrently, electric current passes through the arm 61a to the solenoid 51, thereby opening the solenoid and permitting a limited flow of steam to flow through the by-pass 50 and through the

nozzles

32 and 34. When the arm 61a is turned in a clockwise direction, it ultimately makes contact with both strips 70, 72 and this energizes the solenoid valve 40, opening it, While the solenoid valve 51 remains open. Steam flows through the main pipe 30 at a much greater rate of speed than through the by-pass 50, the valves 41, 52 being so adjusted. Accordingly, the flow of steam through the

nozzles

32, 34 is increased. As the arm 61a moves further clockwise, toward and to the terminals 66, the arm 61a becomes disconnected from the strip 70, thereby permitting the solenoid valve 51 to close,

and the flow of steam is that which is obtained through the main pipe 30* and solenoid valve 40.

Accordingly, it will be appreciated that means are provided for varying the flow of steam from the

nozzles

32, 34 automatically in relation to the rate of speed of operation of the slasher or of the size box. It will be appreciated that the slasher motor 60 may instead be a motor connected to drive the rolls in the size box, and that the interconnection between the speed of operation of the size box and the rate of flow of steam may readily be accomplished in a wide variety of ways.

The automatic controlling apparatus just described is important and advantageous since the steam is reduced in quantity when the slasher is reduced in speed, and is shut off entirely when the slasher is stopped.

Although the steam nozzles may be located in a variety of positions, it is preferred to direct the steam against the ends of the rolls, in such a manner to obtain a heating effect on a substantial surface area of the end of the roll. The specific location shown in the drawings is further advantageous because the steam impinges upon the end of the roll at the location where the size is being squeezed out of the yarn.

Although this invention has been disclosed with reference to a specific form thereof, it will be appreciated that various modifications may be made without departing from the scope of this invention. For example, various combinations and arrangements of rolls may be substituted, equivalents may be utilized, parts may be reversed, and certain features may be used independently of other features, all without departing from hte scope of the invention.

Having thus described my invention, I claim:

1. In a slasher apparatus having a size box containing liquid size and a plurality of rotatable rolls arranged in contact with one another, at least one of which is in contact with the liquid, one of said rolls having a surface portion which is in an exposed position and is located above the surface of said liquid size, the combination which comprises drive means for said slasher, means for drawing a sheet of textile material under the surface of said size and through the nip of said rolls, means for applying pressurized steam to an exposed surface portion of one of said rolls at a location above the surface of said liquid size, preventing solidification and accumulation of solid size on said surface of said roll, and control means connected to said drive means and to the steam applying means for shutting off said steam in response to a stopping of said drive means.

2. In a slasher apparatus having a size box for applying a liquid to an elongated solid material, said size box having a reservoir containing liquid size and having a plurality of rotatable rolls arranged in contact with one another, at least one of which is in contact with the elongated solid material, one of said rolls having a surface portion which is in an exposed position and is located above the surface of said liquid size, the combination which comprises drive means for said apparatus, means for drawing said elongated solid material under the surface of said size and on one of said rolls, means for applying pressurized hot vapor to an exposed surface portion of one of said rolls at a location above the surface of said liquid size, thereby preventing solidification and accumulation of solid size on said surface of said roll, speed control means connected to operate said size box roll at different speeds, vapor rate control means connected to regulate the flow of said hot vapor at different rates, and connecting means between said speed control means and said hot vapor rate control means to produce a change of flow of hot vapor in response to a change of speed of said apparatus.

3. In a slasher apparatus having a size box conntaining liquid size and having a plurality of rotatable rolls arranged in contact with one another, at least one of which is in contact with the liquid, the combination which comprises means for drawing yarn under the surface of said size and through the nip of said rolls, means for applying steam to the nip of said rolls, said means including a main pipe, a by-pass pipe and valve means for opening and closing said pipes, speed control means connected to control the speed of operation of said apparatus, and means connecting said speed control means to said valve means for switching from one of said pipes to the other in response to a change of said speed.

4. In a size box containing liquid size and having a rotatable roll which includes a surface portion located in an exposed position above the surface of said liquid size, the combination which comprises means for drawing sized textile material along the surface of said roll and means for applying a hot vapor to an exposed surface portion of said roll at a location above the surface of said liquid size, said means including a pair of nozzles arranged adjacent the periphery of said roll, located at opposite ends thereof, and directed toward each other.

5. In a size box having a reservoir containing liquid size and having a plurality of rotatable rolls arranged in contact with one another, at least one of which is in contact with the liquid, one of said rolls having a surface portion which is in an exposed position and is located above the surface of said liquid size, the combination which comprises means for drawing yarn under the surface of said size and through the nip of said rolls, and means for impinging hot vapor on the end surfaces of both of said rolls in the area of their nip, said vapor impinging means including a pair of nozzles arranged adjacent the peripheries of said rolls and at the opposite ends thereof.

References Cited in the file of this patent UNITED STATES PATENTS 128,395 Higgins June 25, 1872 646,787 Aykroyd Apr. 3, 1900 1,948,646 Bruenn Feb. 27, 1934 2,795,839 Seawell June 18, 1957 FOREIGN PATENTS 19,256 Great Britain 1897