US19598A - Improvement in cotton-gins - Google Patents

Description

F. L. WILKINSON; COTTON GIN.

No.'19,598. Patented Mar. 9, 1858.

IIIUNIIITED STATES PATENT OFFIC r. L. WILKINSON, or ADAMS BUN, SOUTH oARoLIINA.

IMPROVEMENT IN corronfcms. I

Specification forming part of Letters Patent [9,598, ,daledMart-h 9, i858.

To (LZZ whom it may concern:

Beit known that I, FRANCIS L. WILKINSON,

of Adams Run, in the District of Oolletou and State of South Carolina, have invented a new and useful Improvement in the Roller Cotton- Gin; and I dov hereby declare that the following is a full, clear, and exact description of thesame, reference being had to. the annexed ,drawings, making a part of this specification,

in which- I r I Figural is a longitudinal vertical section of myimproveinent. I Fig. 2 is atransverse vertical section of the same, taken on thelinewx,

Fig. 1. Fig. 3 is a detached view of the lower roller.

Similar letters of .reference indicate corre sponding parts in the several figures.

This invention consists in having one or bothof the rollers of the gin grooved spirally similar to a screw, for the'purpose of readily detaching the seed from the cotton; and also using, in connection with the spirally-grooved roller or rollers, stripping-brushes and a guardplate, arranged as hereinafter shown,whereby the usual slow process of ginning cotton by means of rollers is much expedited without.

the least injury to the staple.

To enable those skilled in the art to fully understand and construct mv invention, I will o" of which have their hearings on the beams a a. The roller B is parallel with the ends of the framing, and is covered with a leather strip, d, which is coiled spirally around it. The edges of the strip (1 are not brought quite in contact with each other,and a spiral groove,

6, is formed by the space between the edges of the strips (1, as shown clearly in Fig. I The journal c of the roller B extends beyond the side of one of the beams a, and hasa cranlgf, formed on it, said crank being connected by a pitman, g, with one side of a treadlc,O, at the lower part of the frame A. To the opposite side of the treadle C the lower end of a pitman, It, is attached. The upper end of this pitman is attached to a crank, '5, of a shaft, j, which shaft has a fly-wheel, 7:, on" it, and a toothed wheel, Z, said toothed wheel gearing into a pinion, 1, 11 one of thejournals of a roller," D, which bears on the leather of the roller B. A fiy-wheel, a, is placed on the journal 0 of the lower roller, B1 The journals of the roller D are fitted in one end of barso 0, the opposite ends of which are. attached to 'one end of the frame A at 1). (See Fig. 1.)

Screws q q. 'pas s through the bars 0 0 near the roller D, each screw being provided with a thumb-nut by which the pressure of the rollers D and, B may be graduated,as desired. The'roller Dis constructed. of metal, and has a. spiral groove,.r, running its whole length, so that the roller resembles a screw, as shown in Fig. 2: The roller D is smaller in diameter than the roller B ,---as shown plainly in Fig, 1. E is a metal-plate, which is'screwed to a board or strip, ,F, placedtransversely in the frame A.. The plate E is secured to the board F by clamps s, and the upper edge of the plate rests upon the roller B. The plate E may be .adjusted higher or lower, as desired, and it will be seen by referring to Fig. 1 that "this plate E serves to diminish the capacity of the angle formed by the contact of the two rollers, and prevent the seed from being drawn between the rollers.

G is the feed-board, which is slightly inclined, and has parallel rods I fitted to or driven in its inner edge-to form a grating or riddle. The feed-board is placed in the usual position relatively with lower roller, B.

H. is a brush-bar, the ends of which are attached to elastic plates a onthe bars 0.0. The brushes 1) are attached to the under side of bar H at equal distances apart, and the lower ends of the brushes extend down a little back of the roller A, as shown clearly in Fig. 1.

I is a brush-bar fitted in the frame A, and having brushes w attached toits upper surface. The upper ends of the brushes to bear against the back side of roller B. (See Fig.1.)

The operation is as follows: The cotton to be ginne'd is placed on the feed-board G and fed by hand to the rollers I) B, which are r0 t-ated by operating the treadle O with the foot, an arbitrary motion being communicated to the upper roller, D,'by means of the wheels Z 121, the relative size of which is such that the periphery of the smaller roller, D, will move as fast as the lower one, B. The cotton passes between the rollers D B, .it being drawn between them in consequence of the bite formed by the contact ofthe two rollers, and the spiral groove 1' in roller D, assisted by the spiral groove 6, formed by the leather strips d, move the seed slightly forward and backward, and have atendency to give it a twisting movement, which causes the staple or fibers to be readily detached from the seed without being the least broken or injured, and consequently the cotton maybe rapidlyginned. The plate E prevents the rollers from drawing-the seed between them, as it diminishes or contracts the angle formed by the bite or line of contact of the rollers, and the seed, therefore, instead of being drawn between the rollers by their rotation, will be repelled from them.. Thebrushes o v of the bars H I strip the ginncd cotton from the rollers, and in consequence of said brushes being placed relatively with their respective rollers, as shown, the cotton cannot pass the brushes by pressing them from the rollers. The seed falls through or between the rods 16.

I would remark that the roller 13, by having a spiral groove, 6, formed on it by placing the leather (1 around it, as shown and described, will assist the roller .D in moving or acting upon the seed as herein set forth; but the groove in thelower roller, B, may be dispensed with, although I prefer to have it.

This machine has been practically tested,

and it operates well, not injuring the fiber or v claim separately andirrespective of their relative position with the rollers D B the brushes -v 'w on the bars H I; but,

Having thus described my invention, what I claim. as new, and desire to secure by Letters Patent, is-

The arrangement, as herein shown and described, of the spirally-grooved rollers 13 D, one or both, stripping-brushes v w, and plate E, for the purposes set forth.

F. L. WILKINSON.

Witnesses:

WM. W. CLEMENT,

LEGAIE.'

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