US274806A - Cotton-gin - Google Patents

Description

(No Model.)

J. D. MILBURN.

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GoTToN-GIN.

Patented Mar.27,1883

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GoTToN GIN. No. 274,806. Patented Mar. 27,1883.

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PATENT Orino JOHN D. MILBURN, OF MEMPHIS, TENNESSEE.

COTTON-GIN.

SPECIFICATION forming part of Letters Patent No. 274,806, dated March 27, 11883.

Application filed February 1, 1883. (No model.) Y e To all lwhom 'it may concern:

Be it known that'I, JOHN D. MILBUEN, a

citizen of the United States, residing at Meinphis, in the county of Shelby Vand State of Tennessee, have invented new and useful Improvements in Gotton-Gins. ot' which the following is a specification.

, The present invention relates to that class of cotton-gins known as under-feed gins,

which are provided with an outer and an inner roll-box, the former for separating the hulls and theinner one for separating the seed from the cotton. Cotton-gms of this description are usually provided with an inner adjustable seedboard, which extends from a feedopening or `hinged lid, and terminates in proximity to the grate or ribs of the machine for forming the roll-boxes between said ribsand an outer l and to produce a superior quality of lint and cleanness of seed from bully and trashy cotton than has ever been effected by any single breasted gin which feeds directly into the rollbox. I accomplish these resultsby having in place of lthe usual adjustable seed-board a series ofhorizontal rollers, which are arranged in a curved line, a second series of rollers being located at the back side ofthe seed-rolls. In connection with the rollers arrangedin this manner, I locate at the bottom of the cottonbox, between the outer front board andthe ribs, the customary rollers for hullin g the cotton and discharging the `hulls and trash from the cotton-box. l

In the drawings, Figures 1 and 2 are end views 'cfa cotton-gin embracing my improvements. Fig, 3 is a longitudinal sectional view. Fig. 4 is a front elevation, the breast-board being broken away to show the arrangement of parts in rear thereof.

D, instead of being a stationary board or sur'- face, is formed of a series of horizontal rollers, E, which turn in bearings in the sides of the cotton-box, and are arranged in acnrved line, as shown. The front wall of the inner roll-box is in ordinary gins formed of the so called seedboard,7 Whereas in the presentinvention I make use of a series of horizontal rollers, G, which are arranged close together in a curved line, commencing at a point opposite the ordinary knuckles or projections on the ribs and terminating at the front of the feed-opening or the hinged lid F, which serves to close the same; The various rollers constitute an inner roll-box having front and rear movable walls, the curvature whereof will easily ada-pt itself to the cotton-roll contained therein. Arollbox of the character described is admirably adapted for adjusting the seedcctton in the -roll to the saws, and itwill also serve to regulate the density and pressure of the roll against the saws, so that the latter may perform their proper functions with regularity and precision, even with a slack or deficient roll. In this manner I prevent the roll from breakingor choking and obviate the attending dangers of lire and ofcutting the cotton or breaking the gin. VThe rollers constituting the seed-cotton roll-box are driven or rotated by means of a belt, a, ruiming from allpulley on the saw-shaft over pulleys b c on the ends of the rollers ot' the front wall, pulleys b and c being anged to guide the belt, and over pulleys d in bracket S, bolted to the frame of the gin through slots therein, making the bracket adjustable for the purpose of tightening belt c; or the brackets may be slotted for a like purpose. The rollers over which the belt passes receive a positive motion, and the others are driven by frictiona-l contact. Other means than those described may, however, be resorted to for operating the rollers. The bottoni roller of the front wall of the inner rollbox is fitted in slots e, made in the headsotl the hood or cotton-box of the gin, so as to permit said roller to be adjusted for varying the space between it and the knuckle portions ofthe ribs. The customary breast-board, I, is arranged at the front of the hood or cottonbox, and at the bottom of said breast-board, or between it and the lower portion of the ginribs, I locate several rollers, J K, which are s i ewqsoc driven from the saw-shaft, all these rollers turning in the same direction. The' object of these rollers Ais to hull the seed-cotton and throw the hulls, trash, and other foreign matters from the cottonbox,.the greater portion of the discharge taking place over the top of the roller adjoining the breast-board. The latter is madeadjustable relatively to the roller i'or permitting the discharge-passage to be ad- Io justed. An eccentric and a shaft with handwheel are generally used for adjusting the breast-board. The hulling and trashdischarg ing rollers have heretofore been employed for the purpose specified, buthave never been arranged in relation with a roll-box, the walls whereof are constructed of rollers as now proposed.

the breast-board, ribs, saws, and hulling and trash-dischargin g rollers, arranged at the bottom of the outer roll-box, all substantially as shown and described, and for the purpose set forth.V

In testimony whereof I have hereunto set my hand in the presence of two subscribing wit- 3o messes. f

Witnesses: JOHN D. MILBURN.

' JAMES L. NoRRIs,

J. A. RUTHERFORD.

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