Year: 1888

page_text: I, JOHN WILTON GORDON, Engineer of 9 New Broad Street, London Middlesex 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:-
This invention has reference to the construction of a machine for hulling and polishing
coffee or other grain.
The invention consists of a cylindrical frame made in halves, lined with woven wire,
and connected together by bolts or otherwise, and mounted on a suitable framing either
horizontally or vertically.
:
A revolving cone provided with a number of projections or teeth is placed concen-
trically in this cylinder. The feed end of the cone is fitted or formed with a screw to
force the grain between the cylinder and the cone the discharged end being fitted
with curved arms to expel the grain. The discharge outlet is furnished with a hinged
door, having affixed to it a lever with a moveable weight for adjusting the required
pressure on the grain whilst being hulled and polished.
This apparatus has combined with it an exhaust fan for the removal of the dust and
chaff.
The accompanying drawings represent a machine constructed horizontally according
to this invention.
Fig. 1. is a side elevation. Fig. 2. is an end elevation. Fig. 3. is a longitudinal
section of the cylinder and cone. Fig. 4. is a half transverse section on the line xx.
Fig. 5. is a half transverse section on the line y. y.
Similar letters of reference indicate corresponding parts in the five figures.
A is the revolving cone having projections or teeth on its external surface. B is the
cylindrical framing having a lining of woven wire C.
D, hinged door with lever and moveable weight E.
G is the screw attached to the end of the cone A.

page_text: Haro the curved arms fitted to the discharge end of the cone A for expelling the
grain. K, exhaust fan; L, hopper; M, suction pipe; N, delivery pipe for chaff and
The action of the machine is follows:
dust.
The hopper L being supplied with coffee or other grain to be hulled, rotary motion
is imparted to the cone A, the grain falling into the cylinder is forced forward by the
screw G, and owing to the action to which it is subjected between the projections on
the cone A and the lining on the cylinder, the husks are removed and the grain
polished.
The grain and husk are discharged at the door D by the curved arms H under a
pressure regulated by the position of the weight E on the door lever, and fall into the
suction pipe M connected with the exhaust fan K, which separates the busk and dust
from the cleaned grain.
The grain is delivered by the pipe M and the husk and dust are blown out through
the pipe N.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, I declare that what I claim is :-
:-
1. An improved combination of paris forming an improved machine for hulling and
polishing coffee or other grain as herein before described and represented in the
accompanying drawings.
2. I claim specially the form of the cone with projections on its exterior surface.
3. The combination of the cone with the feed screw and delivery arms.
4. The combination of the machine with the hinged and weighted discharge door.
5. The combination of a fan with this machine.
Dated this 6th day of November 1888.