US1738391A - Cotton gin - Google Patents

Description

Dec. 3, 1929. c. R. PRESSLEY ET AL COTTON GIN Filed April 16, 1929 2 Sheets-Sheet l c- RPRESSE ESF F- lifili ma y w I, I, K

I ATTORNEY C. R. PRESSLEY ET AL Dec. 3, 1929.

I COTTON GIN Filed April 16, 1929 2 Sheets-Sheet 2 QRPEssEE? *7 N B F B WILLIAMS Patented Dec. 3, 1929 our STATES PATENT OFFICE CLARENCE It. PRESSLEY AND FRENCH B. WILLIAMS, OE FORT WORTH, TEXAS.

common an:

Application filed April is,

Our invention relates to cotton gins and more particularly to certain elements or features hereinafter explained; and the object is to. provide special rib constructions and means for adjusting the ribs and to provide ribs whichcan be rigidly attached at one end and which have a construction which will prevent back lash of the cotton, that is, which will. prevent the lapping of the lint cotton on m the ribs when there is back pressure, the ribs being of such area in cross-section that the lint will not be long enough to wrap about the rib. Another object is to provide ribs which will be rigid to be used in combination with is revolving ribs and to meet requirements of gin equipment of certain type on which other ribs cannot be used. Another advantage is thehead, construction with adjustable means.

Other objects and advantages 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 accompanying drawings which form a part of this applica- 2 tion.

Fig. 1 is a side of the gin assembly, the easing being removed.

*ig. 2 is a detail view, illustrating the rib construction.

Fig. 3 is a perspective view of one of the bearing brackets for the gin heads.

Fig. 4c is a plan view of the same.

Fig. 5 is a front View of one of the ribs.

Fig. 6 is a rear view of one of the ribs.

Fig. 7 is a rear elevation of four ribs, partly in section, taken on the line leading from 7 in Fig. 2.

Fig. 8 is a cross-section of a rib, taken on the line 88 of Fig. 5.

Fig. 9 is a detail'view of the driving gear for the dofiing roller and the revolving ribs.

Fig. 10 is a perspective view of a portion of a gin stand, showing the two heads and the manner of connecting the same.

Similar characters of reference are used to indicate the same parts throughout the several views.

The gin stand has a frame of ordinary type, having uprights 1 and 2, horizontal 50 beams 3 and 4: and diagonal braces 5. The

1929. Serial No. 355,646.

gin stand-has side casing members 6 and back 1 member 7. The gin has revolving saws 8 provided with a shaft 9 of the usual form.

The drawingsshowrevolving ribs 10, such as shown in the application of French B. l/Villiams for cotton gins, filed Oct. 17, 1927, Ser. No. 226,616, and also show a dofiing roller 11. Driving means are provided for the revolving ribsand the dofiing roller. A hearing bracket 12 is rigidly attached to one of the gin heads 13. A sprocket wheel liisprovided with a shaft 15 which is journaled in the bearing bracket 12. A single sprocket chain 16 drives the dotting roller 11 and the revolving ribs 10 from thesprocket wheel 1 1. A pulley 17 is made rigid with the shaft 15. for driving this shaft.

The heads 13 are provided with adjustable means for attaching the same to the gin stand. The advantage is that the hinges are not attached to wooden frame members and consequently the weight is taken from the wooden beams. The heads have rear ext-em sions 18 and lugs 19 are formed on. these entensions. Adjustable bearing members 20 are mounted on the wooden frame member 21. The members .20 have uprightguard members 22. Open-topped bushings 23 are mounted in the guard members 22. y The guard members 22' have vertical grooves 2 1 and the bushings 23 have flanges25. which rest in the grooves 2 1; The gin breasts are hingediy connected to the gin stands by the adjustable bearing members. The bearing members 20 are adjustable laterally on the. frame member 21. Tith such provisions, the gin breasts are made more easily cooperative with the ribs of the gins.

On account of the location of certain parts. in air blast gins, it has been found to be ad vantageous to use the kind of ribs herein shown. The ribs 25 are ap aroximately T- shaped in. cross-section. Each rib- 25 projects between two saws 8. The ribs 25 are constructed for strength. and each. rib has a forked lower end. The fork is arcuate in form and is adapted to engage the end and part of the side of the frame member 26. This arrangement is for bracing purposes. Each rib25 is secured to the frame member 26 by three screws. Adjacent to the fork or angular portion of the rib, the rib has a lateral brace 27 andthe adjacent rib has a cutout to receive the flange 27. The ribs thus have interlockingconnections which are securedto the frame member 26. The ribs 25 terminate in close proximity to the revolving ribs and are curved near the ends, as shown at 28, the object being to start the unginned cotton-and the seed "upwardly to cooperate with the revolving ribs 10, to form a roll in the roll box. Another advantage in the T- shape of the ribs 25 is that the ribsare wide enough and deep enough to prevent the fibre of the cotton from wrapping on or clinging to the ribs when there is back lash or choking of I the passage ofthe air, either about the gin or the condenser. clear of cotton fibre. I

The seed cotton is fed to the gins in the usual manner. The fibre is stripped from the seed by the saws and taken away to the condenser,(not shown), and the seed fall out of The ribs are thus kept v the front of the gin in the usual manner. The

effectof the improved rib construction, including both the stationary ribs 25 and the revolving ribs 10, and the clotting roller 14 in cooperation with the saws is to maintain a loose roll of unginned cotton and seed in the roll box instead of a tight roll as in other gins." There is a great advantage in keeptween the saws of the gin and terminating approximately at the ginningpoint with upward curves and near the periphery of said saws. I

. 2. In a cotton gin provided with a frame and agang of saws provided'with a shaft journaled in said frame; a gin breast having a pair of heads pivotally connected to said frame, revolving ribs provided with a shaft journaled. in said heads, a cross beam attached to the lower parts of said heads and provided with an acuate upper edge, and ribs provided with angular recesses in their ends conforming to the contour of said edge and attached thereto and projecting between the saws of the gin and terminating with upward curves in close proximity to the periphcries of said revolving ribs.

.3. In a cotton'gin' provided with a frame and a gang of saws provided with a shaft 0 j ournaled in said frame; a gin breast having a pair 'of heads pivotally connected to said frame, revolving ribs provided with a shaft journaled in said heads, a cross beam attached to the lower parts of said heads and provided with an acuate upper edge, and ribs provided with angular recesses in their lower ends conforming to the contour of said acuate edge and attached thereto and having bodies T- shaped in cross-section and projecting between said saws and terminating with upward curves in close proximity to said revolving ribs.

4."In a cotton gin provided with a frame and a gang of saws having a shaft journaled in said frame; a gin breast having a pair of heads pivotally connected. to said frame, revolving ribs and a dofling roller cooperating therewith and shafts for said ribs and roller journaled in said heads, gearing carried by said head for driving said cross-beam attached to the lower ends of said heads, and ribs having interlocking flanges attached to said cross-beam and proj ecting between said saws and terminating in close proximity to the peripheries of said revolving rollers and cooperating with said revolving ribs at the ginning point.

5. In a cotton gin provided with a frame and a gang of saws provided with a shaft journaled in said frame; a gin breast having a pair of heads pivotally connected to said frame, a rail attached to the lower ends of said heads, revolving ribs provided with a shaft journaled in said heads, said ribs running slightly between said saws, and stub ribs attached to said rail and projected between said saws and terminating with upwardly curved ends in close proximity to said revolving ribs and cooperating with said saws at the ginning for forming a roll in the ribs and roller, a

point for stripping lint from the cotton seed and cooperating with 1

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