US576860A

US576860A - Process of bleaching rice

Info

Publication number: US576860A
Authority: US
Publication date: 1897-02-09
Anticipated expiration: 1914-02-09

Description

UNITED STATES PATENT OFFICE.

GEORGE ALFRED LAsAUx, or new ORLEANS, LOUISIANA.

PROCESS OF BLEAOHING RICE\' arson-roams tamin part or was mt Io. 570,000, dated Eebrnary e, 1807. Application M July :0. 1m. Intel no. man.

To all, whom it may concern.-

Be it known that I, Gsoaos ALI-nan La- NAUX, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have in vented certain new and useful Improvements in P of Bleaching Rice; and I do hereby declare that the following is a full, clear, and exact description of the same.

To enable those skilled in the art to use my invention, I shall. now explain my newly-invented process of bleaching rice.

The hnlling is done by means of stones or any other suitable means. The rice after being hulled by the stones is then ready to go to the pounders', to the Engleberg hullers, or to any other huller or machine to have the bran removed and then td the brushes or to the polishers, where the rice-grains receive a finish polish, which leaves it in a clean state. I can make the application of my bleaching compound prior to the removal of the bran, or during t e process of removing the bran, or after the bran has been removed, or while the rice is passing through the brushes or polishers, or to rice which has already been brushed or polished.

The grade of rice which my improved process particularly relates to for treatment is what is known as of! or red rice, the grains being 05 white with a reddish tint, which commands a lower price than strictly clean or white rice.

By the use of my bleaching process I clean and whiten the grains so that the quality of the rice is greatly improved and com mcrciall y rendered more valuable.

I use the following materials in my bleaching process: bluing, sol't stony powders, and oil. Of these materials are preferred ultramarine-bluing, French chalk, (also known as soapstone talc,) rice polish, powdered limc, powdered starch,wheat-flou r, rice-flour,whitc chalk, or any other white powder which can be had in a fine powdered condition. I prefer petrol-oil, by which term I mean aliquid petroleum product .870" specific gravity. The mixtures of these materials are controlled by the conditions and quality of the rice to be treated. For the ordinary red rice, usually termed rod rice, the following: proportions would be used: one ounce three drams titteen grains of powdered soapstone or wheatflour, one-half grain ultramarine-bluing, and about ten drops petrol-oil.

It will sometimes be found necessary to use the white powders and bluing and not the oil, acc rding to the quality of the rice.

For cleaned rices which have been through the usual-process of cleaning for the market I would use usually, say for twelve ounces, avoirdupois weight, of rice, one scruple and thirteen grains of mixture; for ten pounds of rice, seven drums and nine grains, or equivalent of little less than one ounce, avoirdupois weight. For one barrel of rice, weighing net three hundred and fifty pounds, put in two pounds of mixture which would contain less than nine grains of ultramarine-bluing. In treating rices which have already had the bran removed and the grains have not been polished or finished ready for the market I increase the ultramarlne-bluing to the quantity of one and one-half grains instead of onehalf grain and the petrol-oil to twent -tive drops instead of ten drops. I then app y the mixture, a's altered, in the same proportion of the other compound as I do on cleaned riees. To apply the bleaching mixtures to the ricegrains, I put the mixture in a shaker, preferably, and sprinkle it on the grains. This mode of application I do not confine myself to, as it may be applied to the riee-grains in any other suitable manner. When the mixtnre has been applied to the rice-grains, then the rice-grains are to be rebrushed or not, as the quality of the rice may require; but for rice which has had the bran removed and has not been brushed or polished then it is absolutely necessary that this rice should be well brushed and polished to make it marketable. During the brushing and polishing otithe rice the grains free themselves of all foreign substances which are present, thereby leaving the rice-grains smooth and clean.

My bleaching process and mixtures are applicable to any kind of rice, but more particularly to oil, red, or may rices, and does not penetrate the grain, but effects and acts directly and superficially on its enamel, which it blcachcs, giving it n smootlnwhite, and high and bleaching rice, consisting in applying to polish, which greatly improves tho actual and commercial value of the riee. When flees are tobe held or stored lorany length of tin the grains are protected from the attack 0 weevils by the fact 0! the enamel of the grain being in such good condition, resulting from the treatment received from my process of bleaching. i I

Having described my invention, what I claim isl. The herein-described process of cleaning the rice-grains a-mixtuze otbln ing, white polishingpowder nnd oil,.and finally brush 7 itng'hnnd polishing the rioc,lnll1e manner so! 2. A' compound for cleaning and bleaching .rloo, consisting of nltramnrine-blulng, m

stone and petrol-oil, compounded substan tially in the mnnne rnnd'tho proportion; s

In testimony whereof I have hereunto sub scribed my name'inthepresence of two wit GEORGE ALFRED LANAUX. wllll 5 v Gus'mvn .V. Bonn-r, Loon; Rzniel'mnms.