US3543350A

US3543350A - Roller gin

Info

Publication number: US3543350A
Application number: US687640A
Authority: US
Inventors: Emanuil Borisovich Malkov
Original assignee: TSNII KHIM PROMY
Current assignee: TSENTRALNY NAUCHNO ISSLEDOVATELSKY INST KHIMICHESKOI PROMYSHLENNOSTI; TSNII KHIM PROMY
Priority date: 1967-12-04
Filing date: 1967-12-04
Publication date: 1970-12-01
Anticipated expiration: 1987-12-01

Description

Dec. 1, 1970 E a MALKQV 3,543,350

ROLLER GIN Filed Dec. 4, 1967 United States Patent 3,543,350 ROLLER GIN Emanuil Borisovich Malkov, Tashkent, U.S.S.R., assignor to Tsentralny Nauchno-Issledovatelsky Institut Khimicheskoi Promyshlennosti, Tashkent, U.S.S.R.

Filed Dec. 4, 1967, Ser. No. 687,640 Int. Cl. D01b 1/06 U.S. Cl. 19-50 1 Claim ABSTRACT OF THE DISCLOSURE A roller gin is provided in which seed is separated from fiber by a leather roller, a separation roller and a stationary knife, the seed dropping through a screen located under a second saw tooth feed roller, while the separated fiber is cleaned by a second saw tooth roller which cards the fiber and a stripper for the saw tooth roller.

The present invention relates to devices for processing raw cotton and, more particularly, to roller gins designed to separate fiber from seeds in fine-fibrous cottons.

Prior art roller gins comprise a leather roller, a stationary knife, a separation device and an arrangement for loosening raw cotton and for feeding same to the leather roller.

The main disadvantage of prior art roller gins is the low quality of the produced fiber caused by the presence of impurities, abortive seeds and flaws, which adversely affect further processing the fiber in textile factories.

It is an object of the present invention to provide for cleaning the fiber of impurities, flaws and abortive seeds.

Also an important object of the invention is to improve the quality of produced fiber. Still another object of the invention is to improve the exterior (merchantable) appearance of the fiber.

In the accomplishment of said and other objects, in a roller gin according to the invention comprising a leather roller, which cooperates with a stationary knife, and a separation device, there is mounted an arrangement for cleaning the fiber delivered directly from the leather roller.

It is advisable that said arrangement for cleaning the fiber be fashioned as a saw-tooth roller, with grates embracing part of the latter roller surface, at least a pair of rollers for the delivery of fiber separated from seeds to the saw-tooth roller, and a stripper of fiber from the saw-tooth roller.

For a better understanding of the invention there is given hereinbelow a description of an exemplary embodiment thereof, reference being had to the accompanying drawing which diagrammatically shows the roller gin according to the present invention.

Referring to the figure, the roller gin comprises: a pair of feed rollers 1 adapted to uniformly deliver raw cotton to a spiked roller 2, which effects the loosening of raw cotton and the separation therefrom of impurities falling through a screen 3 into a bunker 4; a twine-trapping means 5 adapted for trapping pieces of twine and cord which may be accidentally fed to the machine together with raw cotton; a chute 6 directing raw cotton towards a sawtooth cylinder 7, designed to intensively and uniformly deliver raw cotton to a leather roller 8; a separation roller 9 and a stationary knife 10, adapted for the separation of fiber from seeds; and an arrangement for cleaning the fiber delivered from the leather roller 8. The arrangement for cleaning the fiber of impurities, abortive seeds and flaws comprises: a saw-tooth roller 11 for carding the fiber, grates 12 embracing part of the surface of the sawtooth roller, at least a pair of ribbed rollers 13 for squeez- "ice ing the fiber separated from seeds and for delivering same to the saw-tooth roller 11, and a stripper 14 for fiber from the saw-tooth roller.

The saw-tooth cylinder 7 is made as a roller coated with card clothing; it may also be made as a roller composed of separate saw-tooth discs.

To ensure a uniform delivery of raw cotton to the leather roller 8 provision is made for a levelling roller 15 and an accelerating roller 16. The roller 16 is designed to remove raw cotton from the teeth of the saw tooth cylinder 7 and to deliver it to the ginning device. The separation device separates the seeds from the fiber and delivers them, together with complete and partly ginned raw-cotton, along the chute to the saw tooth cylinder 7 under which a perforated screen 17 is placed. As the saw tooth cylinder 7 rotated, the mixture moves along the screen 17. Exposed seeds and impurities fall through the openings of the screen while complete and partly ginned raw-cotton is caught by the teeth of the saw tooth cylinder 7 and returned to the ginning device; this procedure is repeated until the seeds are completely removed. The screen 17 can be made with round holes. To attain more intensive separation of exposed seeds, large-size impurities and other foreign bodies, it is advisable that the openings in the screen under the saw-tooth cylinder 7 be elongated in shape and a continuous chute be placed under the separation roller 9. The saw-tooth roller 11 is made as a roller with card clothing; it may be also be made as a saw-tooth cylinder composed of separate discs. For better carding of the fiber and holding the same on the saw teeth, provision is made of a brush 18. Impurities, fiber waste and seeds are removed from the roller gin with the aid of a belt or screw conveyer (not shown in the drawing).

Upon being stripped, the fiber is transported by means of compressed air along the fiber outlet (not shown in the drawing) to a location where it is pressed into bales.

The roller gin according to the present invention operates as follows.

Raw cotton is fed by the feed rollers 1 onto the spiked roller 2, where it is loosened and is further directed to the twine-trapping means 5, from Which its travels, along the chute 6, to the saw-tooth cylinder 7. The latter effects a uniform delivery of raw cotton to the leather roller 8, where fiber i separated from seeds with the aid of the separation roller 9 and the stationary knife 10. The fiber moves along a chute 19 to the pair of ribbed rollers 13, which feed it to the saw-tooth roller 11. The latter cards the fiber, beats it on the grates 12, whereupon the cleaned fiber is stripped otf the saw teeth with the aid of the stripper 14. Impurities, abortive seeds and fibrous waste fall from under the saw-tooth roller 11 in the spacings between the grates 12, while exposed seeds separated from fiber fall through the screen 17.

I claim:

1. A roller gin comprising: at least one pair of rollers rotatably mounted on a frame to deliver raw-cotton; a spiked roller disposed directly under said rollers to partially loosen the raw-cotton delivered from said rollers; means for the removal of impurities comprising a perforate screen mounted directly under said spike roller; a twine-trapping means mounted adjacent said spiked roller downstream in the course of travel of the'cotton; a vertical guiding chute disposed after said twine-trapping means; a saw tooth roller at the bottom of said chute receiving raw-cotton from said chute; means for the separation from the fiber of seeds mounted downstream of said saw tooth roller; means for the removal of exposed seeds from under said saw tooth roller comprising a perforate screen directly under said toothed roller; means for cleaning the fiber separated from seeds, mounted close to said means for the separation of seeds from fiber and References Cited UNITED STATES PATENTS 888,396 5/1908 Gardner 19-35 7/1912 Mitchell 19-61 XR 2/1920 Conrad 19--37 6/1934 Mitchell 19-37 11/1937 Mitchell 1935 5/1966 Vandergrilf 1950 XR 5/1956 Speakes et a1. 19--66 5/1956 Wallace 19203 FOREIGN PATENTS 6/ 1966 U.S.S.R. 8/1960 U.S.S.R.

DORSEY NEWTON, Primary Examiner