US675423A - Process of treating cotton-seed. - Google Patents

Description

UNirED STATES PATENT OFFICE.

JOIIN CHARLES WILLIAM STANLEY, OF LONDON, ENGLAND.

PROCESS OF TREATING COTTON-SEED.

SPEGIFICATIQN fonning part of Letters Patent No. 675,423, dated June 4, 1901.

Application filed December 24, 1900.

To all whom, it may conceive.-

Be it known that I, JOHN OHARLEs WIL- LIAM STANLEY, a subject of the Queen of England, residing at London, England, have invented certain new and useful Improvements in or Relating to the Treatment of Cotton- Seed Hulls and the Obtaining of Certain Useful Products Therefrom, of which the following is a specification.

Cotton-seed after the ginning of the cotton has always a certain proportion of adhering fiber, and with this fiber and the hull is associated a very material percentage of oil which it is desirable to remove not only on account of its commercial value, but also because it is detrimental to the fiber. Further, it is practicable to make use of the hull of cotton seed, and for some purposes the removal of the oil from the hull is very desirable. In order to secure the oil for its commercial value and to render the cotton fiber and hulls serviceable for purposes which would be impaired by the presence of the oil, I in the first instance and by any suitable means separate the cotton-seed into its main constituent parts, viz: kernels, hulls, and cotton fiber. While this separation may be effected in different ways and by various appliances, I prefer to employ a sequence of dividing and sifting operations, and for this purpose may make use of the apparatus set forth in my Patent No. 658,876, dated October 2, 1900. In these operations the seed is first cracked, but without crushing the kernels into the hulls, and is then threshed and screened, with the result that the greater proportion of the kernel is separated as a meal from the hull and the fiber. A certain proportion of kernel or meal will, however, adhere to the fibers and hull, and I therefore subject the material after sifting to a further separating process, as by t e apparatus of my Letters Patent No. 658,877, and thus secure every particle of kernel, which is then mixed with that already sifted out, and the remaining material practically consists solely of hull and fiber, which have never before been secured in this separated condition from the kernels. This material contains from eight to ten per cent. of oil, and to remove and secure the oil and separate the hull and fiberI grind up the two into a fine mass. This mass is then sifted Serial Non 40,968. (No specimens.)

and the major portion of the hull is separated from the fiber; but there will yet remain a proportion of fine ground hull in combination with the cotton, which cannot be separated by sifting or other mechanical operations. I therefore subject the material to a solvent which will dissolve the oil-as, for instance, benzene or bisulfid of carbon-and I have found that I thus not only extract the oil, but that the effect of the solvent is to secure the ready separation of the remaining, fine particles of ground hull from the cotton fibers, so that after the removal and evaporation of the solvent from the insoluble particles grinding and sitting will readily remove the hull material, leaving the cotton in a pure state and specially adapted, owing to the absence of oil, for use for paper-making, &c. The hull being also freed from oil is specially adapted for use for fertilizing purposes, as the hull-meal freed from the oil is more efficient than that in which the oil is present, while the oil saved by my process amounts to from eighty to one hundred tons out of even one thousand tons of combined hull and fiber treated. After treating the material to dissolve the oil the latter is removed from the solvent in any usual or suitable manner.

It will be seen thatinstead of grinding the kernels with the hulls or instead of discarding the hulls, together with a large proportion of the kernels, as heretofore, I save the Whole of the kernels and also the Whole of the hull portion, securing'as a new product the comminuted particles of hull freed from kernel and fiber, and that by the use of a solvent I also eliminate all the oil, securing it as a mercharitable product.

I claim as my invention 1. The within-described process of treating cotton-seed the same consisting in first wholly separating the kernel from the hull and fibers, then reducing the hull and fibers together to minute particles, treating the ground material mechanically to partially separate the fiber and hull, then subjecting the fibrous portions to the action of a solvent and then separating the fibers and particles, substantially as set forth.

2. In the treatment of cotton -seed first wholly removing the kernels from the hull and fibers and then after reducing the fiber and hull together to fine particles subjecting name to this specification in the presence of the fibrous portions to the action of a solvent, two subscribing witnesses.

separating the dissolved and undissolved nm- 3 terials and than acting on the latter to p JOHh CHARLES WILLIAM STAhLDY. 5 arate the fibrous and hull portions, substan- WVitnesses:

HAROLD WADE,

tially as set forth.

In testimony whereof I have signed my HARRY B. BRIDGES.