US16022A - Improvement in cotton-gins - Google Patents

Description

W. A. PURDOML Cotton-Gin.

Patented Nov. 4, 1856.

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jjfe S N. PETERS. Phol WILSON A. PURDOM,

PATENT @EEICE.

OF JACKSON, MISSISSIPPI.

IMPROVEMENT IN COTTON-GINS.

Specification forming part of Letters Patent No. 16.022, dated November 4, 1856.

To all whom, it may concern.-

Be it known that I, WILsON A. PURDOM, of the city of Jackson, in the county of Hinds and State of Mississippi, have invented a new and useful Mode of Presenting New Surfaces of Cotton to the Action .of the Saws in the Cotton-Gin; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, in which Figure 1 is a longitudinal elevation with a part of the apron cut away. Fig. 2 is a trans verse section; Fig. 3, the cylinder, or a longitudinal section of the same; Fig. 4, a view of the inside of the corrugated apron.

The letters'all refer to the same parts in the different drawings.

A is the corrugated cylinder B, the corrugated apron;-O, the end pieces; D, the shaft operated on by the eccentric plate E, which revolves by means of the pulley F; G, the bearings; H, the ginsaws, and i the ribs.

The nature of my invention consists in directing the entire roll of cotton longitudinally, nearly an massc, alternately to the right and left, so as to present new surfaces of cotton for the action of the gin-saws, and at the same time getting rid of the spiral or twisting motion of the cotton, as well as the acute indentations in the cotton-roll, produced by metallic plates, and thus avoiding the danger of forming nitters-so much deprecated by manufacturerswhile I prevent an accumulation of the seed at one end of the cotton-box, or the banking up or clogging of the cotton at either end, and enable all the saws to do efficient work at the same time. This longitudinal, lateral, or reciprocating motion of the cotton-roll is produced by a corrugated cylinder, (or an approximation to such cylinder, a transverse section of which latter would represent an oval appearance, with the corrugations most protuberant on the thickest or widest part,)

. which may have a revolving motion, on pivots or otherwise, with the roll of cotton 1mm passu, independent of the lateral motion, and which cylinder is placed within or outside of the roll of cotton, and is attached to a corrugated apron on the inside of the breast of the gin, with solid end pieces, by which the machine is made to act as a unit, holding the cotton I together. Itis by means of these corrugations (or, as they may be called, waves, knobs, or undulations,) on the cylinder and apron that sufiicient adhesion of the cotton issecured to cause the entire roll of cotton to move with the machine or attachment. The requisite motion I produce in three different ways namely, by means of a right and left hand screw-thread cut on the same pin or shaft, and on the same surface, the end of which pin or end pieces, and is operated by a fork which has sufficient motion in a socket to permit an eccentric at the proper time to direct it into the right or left hand screw-thread, as may be necessary. Another mode is by means of a shaft working in screw -like guides with a three-quarter drum or lantern-shaped pinion on the end, operated by a small pinion which reverses the motion of the semi-drum-pinion when it reaches an open space in it, alternately working on the inside and outside of the imperfect drum pinion, the open space (onefourth or more of its circumference) in the drum-pinion permitting the little pinion to pass through and operate on the opposite side of the cogs. Or, in lieu of these, and as more economical, the same motion is produced by an eccentric plate or wheel (see E) revolving against the end of the shaft of the cylinder, or a protuberance from the corrugated apron, or the end of a vibrating'bar attached to said machine, while a spring, K, at the other end presses it continually against the said eccentric plate.

Having thus described my invcntion,what I claim as new, and desire to secure by Letters Patent. isf 1. Giving to the cotton to be ginned within the feed-box and before the saws H a reciprocating motion by means of the corrugated cylinder A, or a modification of such cylinder, and the corrugated apron B, or either of them separately, or their equivalents, so that the cotton will pass back and forth slowly in bulk, or nearly so, before the saws, thus presenting a fresh surface to the action of the saws throughout the entire length of the saw-cylinder, without leaving any of the saws idle, and without the accumulation of seed at one end of the box or the banking up of the cotton at either end.

2. For the purposes aforesaid, the said cylshaft works against the apron or one of the r inder A, or its equivalentwhether it is placed erated oonj ointly with, the said cylinder A or Within 01' outside of the cotton-roll, and Wh8l3h61 not. it is permanently attached to the apron B or not, also whether it revolves or not, 01' whether PD RDOM' that revolution is continuous or intermittent. Vitnesses:

3. For thepurposes clescribed,the corrugated J OSEPH VRIGII'I, apron B, or its equivalent, whether it :is op- I. H. PATRICK.

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