US1717324A - Cotton gin - Google Patents

Description

4 June 11, 1929. c, pngss z-y 1,717.32.

COTTON GIN Filed Nov. 17, 1928 I, i MM/l/fllM/lll/Il/IIIIIIIIIIIIII M w W I II I CRPPLSSLEY INVENTOR.

ATTORNEY Patented June 11, 1929.

CLARENCE R.PRESSLEY, 013 FORT WORTH, TEXAS.

COTTON GIN.

Application filed November 17, 1928. Serial No. 320,090.

My invention relates to cotton gins and more particularly to means for preventing the choking of the cotton about the ribs of the gin; and the object is to provide revolving ribs and other ribs which cooperate with the revolving ribs for preventing the choking of the ribs and saws and which will reduce the power required to run the gin mechanism and which will make it possible for the gin to run much faster because the improvements reduce friction by preventingthecotton from crowding and rubbing against the saws and ribs, and for these reasons the improvements make the operation of the gin more economical. Another advantage is that the fire hazard is reduced by preventing friction of the saws and ribs against the cotton. It has been discovered that the cause of the fire in many instances is the friction of the cotton and saws and the particular location of the trouble is the cotton that becomes hung on the ribs and bears against the saws on the underside of the ribs, that is, after the saw teeth pass the ribs, the saws rub against the cotton that is clinging to the ribs and this is where the fireoriginates. The object is to provide, in addition to the ribs heretofore provided, re-

volving ribs that will throw the cotton roll back away from the points where the saws pass through the stationary ribs and to change the shapes of the stationary ribs to cooperate with the revolving ribs. Another improvement is a dotting roller for cooperating with the revolving ribs, which will aid in forming the roll in the roll box. Another advantage of the dofing roller is that it will protect the cotton seed by preventing the cracking of the seed. Other objects and ad vantages will be fully explained in the following description, and the invention will be more particularly pointed out in the claims.

Reference is had to the drawings which form a cation.

Fig. 1 is a perspective View of a gin with the gin breast raised to show the location of part of the improvements.

Fig. 2 is a vertical section of the bearings for the revolving ribs and the dofiing roller, parts being broken.

Fig. 3 is a side elevation in part of a gin, showing the location of the improvements.

Fig. 4 is a detail view of one of the ribs.

Fig. 5 is a detail view of one of the heads.

accompanying part of this applithe drawings provided with the improvements and saws and a brush drum. The gin has the usual roll box which is a space above the saws 2, a brush drum 3, and other parts not necessary to be described in this application. The gin has stationary ribs 5 attached at their lower ends to a frame member 6. This member 6 is a part of the gin breast and may be swung upwardly for different purposes, as for cleaning the saws, to inspect the working parts. The ribs 5 are different from any other ribs of gins. The lower parts are similar to the lower parts of the usual gin ribs, but the ribs have acuate dividers 8 which cooperate with the saws 2 and the revolving ribs and the doflin roller to form a roll of cotton in the rol box. The dividers 8 conform approximately to the curvature of the revolving ribs 10 and the ribs have curved portions 9 which stand in close proximityto the revolving ribs 10 and the ribs are attached to the backside of the gin rail 7 The object of this construction and arrangement is to locate the parts of the ribs through which the saws pass as far away as practical from the roll in the roll box. The saws 2 pass through the ribs 10 at approximately the parts 11 of the ribs 5, the saws having already passed through the ribs 10. The dividers 8 and the rolling ribs 10 prevent the crowding of the seed and unginned cotton at the points 11 of the ribs 5. There are advantages in this provision because the lint is more quickly removed from the seed due to the non-crowding or packing of the cotton and seed against the ribs at parts 11 and the lint is more easily removed from the saws after the saws leave the ribs at parts 11. This isthe danger point of fire and the fire hazard is removed by the construction and arrangement shown. The reason for this is that no lint cotton-hangs on the ribs to rub against the sides of the saws. The danger to be removed was the rubbing of the saws against the lint cotton which was clinging to the ribs. This rubbing created enough friction to cause ignition.

The saws 2 run as the arrow head shown in Fig. 3, which direction is clockwise. The re volving ribs are mounted to run in the same direction, that is, clockwise. The ribs 10 are rigid with a shaft 12 and the shaft 12 is journaled in heads 13 and 14 and these heads are provided with journal boxes or bearings 15 which are integral therewith and the boxes 15 support antifriction bearings 16. Acap 17 holds the bearings 16 in place. A dofiing roller 18 is provided with a shaft 19 which is journaled in bearings 20 which are integral with the heads 13 and 1 1 and antifriction bearings 21 are provided for the shaft 19 and these bearings are held in place by a cap 17 The periphery of the roller 18 is corrugated and this roller cooperates with the revolving ribs 10 in forming a roll in the roll box. The corrugated dofling roller 18 is necessary for the successful operation of the gin and to protect the seed of the cotton. The doffing roller prevents seed and seed cotton from being thrown behind the revolving ribs. The dofiing roller will protect the seed by preventing the crack- 7 ing of the seed. The feature of the cotton being prevented from passing behind the re volving ribs removes a fire hazard. The dofting roller also assists in turning the roll of cotton in the roll in the roll box and is absolutely necessary for the successful operation of the revolving ribs.

WVhat I claim is 1. In a cotton gin provided with a gang of saws, a frame, and a roll box; ribs attached to said frame and positioned between said saws and means for forming a roll in said roll boxand simultaneously spacing the passage point of said saws. from said ribs consisting of dividers formed on said ribs, curved revolving ribs positioned partly above said saws and running in the same direction as said saws and port-ions of the revolving ribs running between said saws, said stationary ribs being curved under and behind said revolving ribs, and a corrugated dotting roller positioned above said revolving ribs and co operating with said revolving ribs by preventing cotton from being thrown behind the revolving ribs and by pressing cotton into the roll in the roll box.

2. In a cotton gin provided with a gang of saws, a frame, and a roll box; a swinging frame including upper and lower rails hingedly connected to the gin frame, bearing heads attached to said upper and lower rails, revolving ribs provided with a shaft journaled in said bearing heads and said revolving ribs running partly between said saws, stationary ribs attached at their lower ends to said lower rail and positioned partly between said saws and having integral dividers curved upward slightly in front of said revolving ribs and members curved under and behind said revolving ribs and attached at their upper ends to the rear side of said upper rail, said revolving ribs serving to brush seed and seed cotton back from the points where said saws leave said stationary ribs and to press the cotton and seed into the roll in said roll box, and a dofiing roller journaled in said heads and provided with a corrugated periphery cooperating with said revolving ribs.

3. In a cotton gin provided with a gang of saws, a frame, and a roll box; stationary ribs attached to said frame and provided with downwardly and upwardly curved members, revolving ribs having a shaft journaled in said frame and positioned partly in the curve of said ribs and running partly between said saws, and a corrugated doffing roller journaled in said frame and serving to prevent cotton and cotton seed from being thrown backwardly of said revolving ribs without breaking the seed.

In testimony whereof, I set my hand, this 12th day of November, 1928.

CLARENCE R. PRESSLEY.

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