New or Improved Method of Polishing Rice.
Year: 1891

page_text: Date of Application, 4th July, 1891
Complete Specification Left, 18th Aug., 1891-Accepted, 3rd Oct.. 1891
PROVISIONAL SPECIFICATION.
New or Improved Method of Polishing Rice.
I, GEORGE BOUTCHER PROCHASKA, of 262 to 274, Tchoupitoulas Street, New
Orleans, in the State of Louisiana, United States of America, Rice Miller, do
hereby declare the nature of this invention to be as follows:-
Heretofore rice has been polished by means of friction and use of pounders, but
it has been found that the grains are very much broken and a large per-centage of
the rice is left in an unmerchantable condition.
The object of my invention is to thoroughly polish rice, and to obviate many
difficulties that have heretofore arisen in the milling of rice for the trade; and to
this end my invention consists in increasing the polish of rice without any
diminution in weight and producing a result, in appearance of each grain of rice,
that has heretofore been unknown.
To carry my invention into effect, while the rice is in the cooling floor bins and
heated by friction, I mingle among the rice, in any desired manner, say one pound
of talc, soap stone, steatite, or French chalk, of any particular colour or shade to
each hundred pounds of rice, then transfer the rice to polishing machines, after rice
has remained for one hour, or a sufficient time to cool, the grains of rice being
porous, the tale, soap stone, steatite, or French chalk is readily absorbed on the
grains of rice, and, while thus treated and run through a polishing machine, is
susceptible of a high polish or finish.
Where desired, the talc, soap stone, steatite or French chalk may be applied in
connection with oil, or in conjunction with a jet of steam or water.
I have also found it advantageous to tint talc, soap stone, steatite or French
chalk with indigo, or any other desired bluing, thus enabling each grain of rice,
when polished, to be very lightly tinted and presenting a beautiful appearance;
rice when thus treated has its yield increased by reason of preventing, to a certain
extent, cracking, breaking or wearing of grain, there being less friction, there is
less rubbing away of grain during the polishing process. I, however, do not.
confine myself to the aforesaid manner of mingling the talc, soap stone, steatite or
French chalk, as these ingredients may be mingled with the rice at any stage of
the cleaning process, when the rice is cool or when heated from friction.
A striking advantage of my process is the economical manner in which rice may
be polished, leaving it in a suitable condition for market...
Dated this 3rd day of July 1891
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.
COMPLETE SPECIFICATION.
New or Improved Method of Polishing Rice.
I, GEORGE BOUTCHER PROCHASKA of 262 to 274 Tchoupitoulas Street, New
Orleans in the State of Louisiana, United States of America, Rice Miller do
hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement :-
Heretofore rice has been polished by means of friction and use of pounders, but
it has been found that the grains are very much broken and a large percentage of
the rice is left in an unmerchantable condition.

page_text: The object of my invention is to thoroughly polish rice, and to obviate many
difficulties that have heretofore arisen in the milling of rice for the trade; and
to this end my invention consists in increasing the polish of rice without any
diminution in weight and producing a result, in appearance of each grain of rice,
that has heretofore been unknown.
To carry my invention into effect, while the rice is in the cooling floor bins and
heated by friction, I mingle among the rice, in any desired manner, say one pound
of talc, soap stone, steatite, or French chalk, of any particular colour or shade, to
each hundred pounds of rice, then transfer the rice to polishing machines, after rice
has remained for one hour, or a sufficient time to cool, the grains of rice being
porous, the talc, soap stone, steatite, or French chalk is readily absorbed on the
grains of rice and while thus treated and run through a polishing machine is
susceptible of a high polish or finish.
Where desired the talc, soap stone, steatite or French chalk may be applied in
connection with oil, or in conjunction with a jet of steam or water.
I have also found it advantageous to tint talc, soap stone, steatite or French
chalk with indigo, or any other desired bluing, thus enabling each grain of rice,
when polished, to be very lightly tinted and presenting a beautiful appearance;
rice when thus treated has its yield increased by reason of preventing, to a certain
extent, cracking, breaking or wearing of grain, there being less friction, there is
less rubbing away of grain during the polishing process. I however do not confine
myself to the aforesaid manner of mingling the tale, soap stone, steatite or French
chalk, as these ingredients may be mingled with the rice at any stage of the cleaning
process, when the rice is cool or when heated from friction.
A striking advantage of my process is the economical manner in which rice may
be polished leaving it in a suitable condition for market.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I wish it to be understood
that I do not limit myself to the precise details herein described, as the same may
be varied to some extent, but I declare that what I claim is
-
1. The herein described process for treating rice, during the milling or polishing
process, by mingling tale, soap stone, steatite or French chalk with rice when in a
heated state from friction or by introducing oil, steam, or water with rice in the
manner set forth.
2. The herein described process for treating rice, during the cleaning or polishing
process, consisting of mingling tale, soap stone, steatite or French chalk with rice,
either in a cool or heated state, as set forth.
Dated this 17th day of August. 1891
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.