Ax IMPROVED MACHINE FOR HULLING AND CLEANING OR POLISHING COFFEE, RICE, AND OTHER GRAIN
Year: 1868

page_text: PROVISIONAL SPECIFICATION left by George Davies at the Office of
the Commissioners of Patents, with his Petition, on the 15th.
September 1868.-A. communication from abroad by James Fowle
Baldwin Marshall and Augustus Jones, both of Boston, Massa-
chusetts, in the United States of America.
I, GEORGE DAVIES, of No. 1, Serle Street, Lincoln's Inn, in the County
of Middlesex, and No. 87, St. Vincent Street, in the City of Glasgow,
Civil Engineer and Patent Agent, do hereby declare the nature of the
said Invention for "Ax IMPROVED MACHINE FOR HULLING AND CLEANING OR
POLISHING COFFEE, RICE, AND OTHER GRAIN," (a communication to me from
abroad by James Fowle Baldwin Marshall and Augustus Jones, both
of Boston, Massachusetts, in the United States of America) to be as
follows:-
The object of this Invention is to produce a machine for hulling,
cleansing; and polishing coffee, rice, and other grain in a rapid and
effective manner, and without the large loss occasioned by the grain
being crushed and broken, which renders machines now in use so
inefficient...

page_text: The hull or integument of the coffee and rice berry is of such a
peculiar nature as to render its removal without injury to the berry
a matter of much difficulty.
The Invention consists in the combination of a series of adjustable
spring strippers provided with serrated or roughened serrated faces of
metal and an endless belt or band composed of serrated or roughened
metallic plates, and also in connection with the above in the arrangement
in the same machine of a stiff brush and an endless serrated or roughened
belt, whereby the processes of hulling and cleansing or polishing the
coffee, rice, or other grain may be successively effected in one and the
same machine.
Supported by the frame of the machine is an endless elevating
band provided with suitable brackets for raising the hulled grain to the
hopper of the polishing device. Inclined shaking tables conduct the
grain in the winnowing chambers to the front part of the machine;
endless bands or belts properly mounted on drums composed of a series
of serrated or roughened plates placed at right angles with the belt, and
so connected and secured together as to form a level surface, carry the
berries along under the strippers and polisher.
The hulling strippers are composed of long narrow bars having a
roughened or scrrated metallic under surface; they are pivoted at one
end so as to allow the other end to be raised or lowered. A spring
regulated by a bolt presses the fore end of such stripper downwards with
sufficient force to remove the hulls without injuring the kernels. The
upper or covering plate to which the springs are attached can be raised
or lowered by means of screws, thus increasing or diminishing the force
which presses the strippers towards the endless belt. Suitable adjusting
screws permit a variation of the tension of the pressing springs, thus
adapting the same hulling device to berries of different sizes. Within
the throat of each hopper is arranged a grooved cylinder provided with
corresponding guards so constructed and arranged as to allow the grain
to be fed to the machine without danger of choking the throat of the
hopper.
There is also a stationary brush composed of bristles or other
equivalent, polishing device arranged over an endless serrated or
roughened band by which the berry is effectually cleansed and polished.
The berries after being subjected to the operation of hulling fall down.
the inclined shaking board, being at the same time subjected to the blast_

page_text: produced by a fan blower; they are then carried up by the elevating
band and conducted to the polishing device, and from thence are carried
to a proper receptacle, being again subjected to a blast of air by
which they are separated from all light particles of the hulls and any
impurities.