US220957A - Improvement in saw-cleaners for cotton-gins - Google Patents

Description

W. W. BRIGG. SawC1eaner for Cotton-Girls.

No. 220,957. Patented Oct. 28, |879.

'l lTo all 'whom itmay concern;- i

Be it known that INVI'LLIAM WHITELEY BRIGG, of thev city of Charlotte, county, of

.rlllecklenburg, and'State of NorthA Carolina,

n t On the accompanying drawings,Figure 1 is -a transverse section of so much of a cottongan as is necessary for-theunderstanding of "my invention gjand gs. 2,3, 4, and 5 'a'rede- "tail views of the sanie saw-cleaner, showing .its constructiml and its mode o't attachment to the brushlcy'inder.

The objectof my inventionis to supply a cheap and durable substitutefor the bristle and steel brushes heretofore used for keeping clean the saws of a cotton-gin and propelling the cotton -into the lint-room.

`The bristle and steel brushes or fans are very expensive, and require periodical renewals, and are-'also inefficient in their operation when cotton isI in its bestcondition for ginning, for reasons hereinafter stated. The invention consists, first, in afan or sawcleaner madeof leather or other flexible mate-v. 4 rial,havingiholes of a circular orot-her suita- .fble shapeifpunched out along its length in a line preferably about iiveeighths ot' an inch from its outer edge, said holes being larger in diameter than the thickness of the saws and the-lint upon said saws. From each of these @holes to ther-"outer edge of the fan a slit is cut,

leaving the entire edge of the fan uninterrupted, excepting that on the side of the fan which iirstf comes in contact with the saws cach edge ofthe slit is beveled, preferablyto `a feather-edge, as shown in Figs. 4 and 5f Second, in a novel mode of attaching these `fans orV saw-cleaners to the ribs which are 'secured to the cylinder on which" they revolve. y y' Third, in a brushing or fanning cylinder provided with this peculiar form of fan or cleaner. In the drawings, A represents one of a series of gin-saws, and B a cylinder placed at the back o f the saws upon the shaft C, which is journaled in the main frame of the machine. A number of ribs, floats. orights, D, are secured to the perimeter ofthe cylinder B, to each ofwhich ribs a strip, F,.of leather or. other suitable flexible materia-l, is fastened..

nnirnfnsmrnsj Partnr; operon win lining cnice, on on'itnnorrn, nonrn cAnoLmA.

.IMPRL-QVEMENT VIN SAW-'CLEANERS FOR COTTON-ems.

Speciiicationforming part of Letters ,Patent No. 220,957, dated October 28, 18795 application filed September 9, 1878;

This strip projects radially beyond the rib D an inch or more, and has holes of a circular or other shape punched clear through it a short distance beyond the rib D, and a single cut or slit clear through the 'strip from said holes outward. Onthe front or striking side of the stripsF the sides of these slits or cuts are beveledto nearly' or quite a feather-edge, to facilitate the passage between these edges of the saws, which are thus wiped and cleared of all adhering matters. v

The strips or fans F are secured-to the sides of the nights or ribs D by means of strips E, of sheet metal or other rigid suitable material, running the entire length of the ribs and fans, to prevent the stretching atany given point of the leather or other material of which the fans F are made, and also to give the firm support required by said fans at this point to give them the necessary elasticity. These strips E are, together with the strips F, closely and firmly secured to the ribs D bymeans of nails,

screws, tacks, rivets, bolts, or other suitable fastenings. This construction also prevents the strips F from being torn away by the rapid revolution of the cylinder B, and also by the friction of the ginniug-saws exerted on said strips F'when in motion.

The operation of the fans or cleaners is as follows: The cylinder B, provided with these fans and revolving toward the saws, but at a greatervelocity, presents the fans with the beveled edges of the slits toward them. As soon as the slit strikes the saw its closed jaws are forced open, and, as long as they engage thesaw, hold it elastically between them, lifting off the lint or cotton and deliverin git into the lint-room, and at the same time wiping off any moisture or gunimy substance deposited upon the saws by the cotton when unripe or damp. When the fan has passed its point of contact `with the saws the jaws of the slit close by their own elasticity, their free movement bein g partly due to the circular openings spoken off. The movement is analogous to that of the human lips. This action also has a tendency to keep the saws sharpened up to a needlepoint- -a very important fea-ture in saws of this type.

The constant and thorough cleansing of the saws by the strips F enables machines in which they are used to ginl cotton, no matter what may be its condition, and without the necessity of frequent stoppage.

It is to be noted that during the operation of ginning a large amount of electricity is geuerated by the great velocity of the numerous saws used in a cotton-gin, which is discharged from them and absorbed or retained by the cotton in the seed-box, through which the saws pass, to be fed with the lint, which is then attached to the seed; and when this seed-cotton is in such a state to admit of being ginned and the lint discharged with a bristle brush, it is rendered more harsh and brittle with the absorption of the electrical iluid than it is in its normal condition. Hence the saws, runnin g at their requisite velocity, break the fiber into unequal lengths and shorter than as it is found on the seed, which lessens its market value; but with my improved fan or cleaner and lintdistributer I gin cotton in a damp condition, which dampness neutralizes any and all electricity which may be generated, carried, and discharged in said seed-box, thus so toughening and strengthening the fiber that the saws can drag it from oi the seed in its entire length and present a more silky axy-lookin g sample.

Having described my invention, I claim- 1. A fan or saw-cleaner for a cotton-gin, made of leather or other suitable flexible material, having holes punched through it along its length at a small distance from its outer edge, and slits cut from said openings to the outer edge, substantially as described. r

2. A fan or saw-cleaner for a cottongnf' made of leather or other suitable exible ma terial, having holes of a circular or other fibrin punched through it along its length at a small r distance from its outer edge, and slits having their edges beveled on the striking side of said fan or strip cut through it from the said openings to the outer edge, ,substantiall y as .de scribed.

3. The fans or cleaners L E, made of leather or other exible or suitable material, and secured to the ribs D by means ot' the metallic or other rigid strips or caps E, and tacks, screws, orother equivalent fastenings, substantially as described.

4. The cylinder B, provided with the ribs D, having the fans or cleaners F, formed with the perforations and slitsinthe manner described, and secured to said ribs, substantially as and for the purposes set forth. t

In testimony whereoflhave signed my naine to this specification in .the presence of two sub scribing witnesses.

WILLIAM WHITELEY BRIGG.

Witnesses J. W. WILsoN, B. KAUFMAN.

Images