US907340A - Process of treating cotton-seed hulls. - Google Patents

Description

v P. G. GRANT. PROCESS or TREATING GOTTON SEED HULLS.

APPLiOATI'ON FILED MAB. 7, 1908- Patented'Dec. 22, 1-908.

@Mmmw PETER e. GRANT,=OF nsnrrns, TENNESSEE,

ASSIGNOR TO DANIEL'GRAXT. Ol MEMPHIS.

, TENNESSEE.

' PROCESS OF TREATING co'r'ron-snnn HULLs.

Specification of Letters Patent.

Patented Dec. 22, 1908.

Application filedlliarch 7 1908. Serial No. 419,749.

Be it known that I, PETER G. G ANT, a citizen of the United States, residing at Memphis, 'in the county 'of'Shelby and State of Tennessee, have invented new and useful Improvements in Processes of Treating Cotton- Seed Hull's, of Which the following is a speci- My invention relates to a process for disintegrating, agitating, and separating various substances and particularly cotton seed hulls, from the lint or fiber with which they are'usually associated; the object of the inlivered through a chute, B, into one end of avent-ion being to. simplify and cheapen the known processes for treating cotton-seed ,hulls and to ehminat'e thc lint therefrom 111 a more expeditious, facile and economical manner, and to convert the substahce into bran and fiber, and segregate these materials and collect them in separatereccptacles.

My invention consists of the process which Iw1ll hereinafter describe and claim.

In the accon'lpanyingv drawing: Figure 1 represents a part elevation and part sectional view of one form of apparatus or group oi machines by which my process may be carried out. big, 2 shows a fragment of a modified part of the apparatus.

Referring to the drawing, Fig. 1, which, as before stated, is illustrative of one form of apparatus I may use to carry out my process, A represents any suitable and approved form of attrition mill, or grinding machine, of which there are various types suitable formy purpose. Into this mill the hulls with the adl'ierent fiber are delivered through a chute, a. After being subjected to a grinding action of the mill, A, the ground product is de suitably inelosed beater, C, having a, perforate bottom, 10, and internal shaft, 12, with radial beater-arms, 13. The ground-mass is thoroughly agitated. and beat n in this machine, and the loosenedbranparticles of the are discharged through the perforated 'bottoin an conveyed by a s out or chute C into a sack or receiver, D, or carried away by any well known conveying means to such a oint as may be desired. The remaining iiulls together with the lint or fiber adhering thereto are delivered from the beater through i the chute, E, of a beater-casing into'the feedend of a cylinder, 1*, having an internal shaft,f

- 14, with radial beater-arms, 15, the inner cir. cuniference of said cylinder being adapted to cooperate with the beater arms, 15, to eii'ect a disintegration of they material. This machine is designed to rub'the fiber from the bulls, and by a blast created through the ma chine by a fan located outside of, or operable, j

in a case, 17, at one end, the l oosened iiberis blown through a pipe, 18, to a haling room or other receiver, not shown. y The hard particles of hull are delivered from the cylim-ler, F, through the screened peripheral opening 20, in the side of the cylinder, and may be conducted byia chute.- 2],in'to a suitable receiver, asin Fig. 2, and

thence conducted. to a separate grinding mill; but if desired, I may discharge the hard particles of hull with whatever lint may remain adhering thereto throughxthe periphoral opening 20,'and into a suitable case having a conveyor, 30, whichopcratcs in conncctitm with other conveyors, 31 leading back to, the original grinding 'mill' whereby the said particles of hull and remaininglint \villzbe carried back to the original grinding mill to be mixed with fresh liullsbeing i'cdv thereto. When the said hull particlesare carried to the fresh bulls and passed through the original grinding mill, the proccss becomes continuous until the hulls are converted into two parts, making what is known as hull bran and hull fiber.

I have discovered that cottoii-secd hulls having a cupshape tend to offer little resist- I ance to a grinding )roccss and that to overc-ome'this the small particlesof hulls after some fiber has been taken off when dropping into the original hull, tend to till up the concaved portion of the hull and form a mass of sufficient resistance tomaterially assist-the grinding at the primary attrition mill. By'niy process, thercfme, the hulls are subjected to the several operations. described, with the result that the iiber. is ex tracted through the delivery chute or spout, 18, while the separated bran is collected inap ropriate receiversa y my method of first grinding the hulls in an attrition mill, I reduce the size 'of the hard husky part and thereby enable the cylinder F, and its. components to 1nore easily perform their work. The purpose of' introducing the beater, G,'betwecn the attrition mill and the cylinder,'F, which beater, may represent any shaker or screen, s'due to cylinder F, some fine particles of bran resulting from the grinding operation pass through the cylinder F, an are delivered by the chute or spout 18, together with the fiber,

thereby making a bad quality 0 fiber.

I am aware that it is not ne to disintegrate and separate cotton-seed hulls by dehvering the hulls with the adherent fiber directly into one of the cylinders. which is provided with internal beaters adapted to I disintegrate the hulls and deliver the crushed chamber by which the loosened fibers aredischarged from the cylinder and delivered to a pneumatic or other ty e of collector. I am further aware that it is old to pass the hulls from one attrition mill through a beater which beats out part of the bran produced by the grinding m the aforesaid mill, and then conduct the residue to second, third,

. and succeeding attrition mills and. after grinding it in each of these mills pass the material to corresponding heaters to remove more of the bran. The process last described is, however, areduction process pure and simple, as a part of the bran is removed after each grinding, and the grinding continues until no bran remains. Such a process requires an enormous Waste of power or energy owing to the regrinding of the cotton or fiber each time,

In disintegrating cotton-seed hulls I have found from years of experience and experiment, that it is almost lmpossible to accomplish the desired result without handling the product over and over again thereby reducing it. operation is in regrindin the cotton which is adhering to the hulls and therefore I iropose to improve the known processes by su jecting the hulls to a preliminary rinding whereby the cotton is practically e iminated on the first grinding and that the only subsequent grinding is of the hull itself to take away the small particles of remaining cotton. In my process, I merely grind the hulls in an attrition mill or other grinding machine and then run this ground 'mass through a beater or I believe the difficult part of the.

other machine which extracts such bran or finely ground particles of hulls as are loosened up, and then taking the residue of the beater to the cylinder F; or to any. suitable machine using an air. current against gravity, to remove the lint or fiber, leaving the balance of the ground mass in the form of a finished product of bran.

I Under my process there is no subsequent grindin The hulls are ground in the attrition mil there to grinding, the mass is subjected to a violent agitation simply loosening up the ground mass and rubbin off the fiber which has been already loosener up b the grindin in the attrition mill. The filier is then ta ken out by the air current against gravity and the remainder bein 1 bran passes through the opening in the side of the cylinder F.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is: v a

1.- The process herein described for; continuously separating the lint from cottonseed hulls which consists in first (grinding the hulls, then beating the groun screening out a )ortion of the hull particles, then agitating t e residue in the presence of an air blast against gravity, to separate a por- ,pxassed throu h the beater and from i t e fiber mac ine whereinstead off mass and tion of the freed lint, and then returning the seed hulls which consists in first grinding the hulls, then beating the ground mass and screening out a portion of the hull particles, then agitating the residue against rubbing surfaces in the presence of an air blast against gravity, to, separate a portion of the freed lint,- anc1 then returning the remaining residue to be treated in the same cycle of operations.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

PETER G. GRANT.

Witnesses:

J. C. HONEY, Jr., M. RUTSCHMAN.

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