Improvements in or connected with Machinery for Washing Grain.
Year: 1891

page_text: Date of Application, 10th Feb., 1891
Complete Specification Left. 10th Nov., 1891-Accepted, 12th Dec., 1891.
PROVISIONAL SPECIFICATION.
Improvements in or connected with Machinery for Washing Grain.
I, FREDERICK WILLIAM GREW, of 17 Sowerby Street, Sowerby Bridge, in
the County of York, Engineer, do hereby declare the nature of this invention to
be as follows:-
My invention has reference to apparatus employed in washing beans, peas,
cereals, and the like, the object of my invention being to collect and remove from
In
the top of the bath the floating husks, pieces of straw and other light matter.
constructing an apparatus according to my invention, I employ any suitable form
of vessel for containing the water, and an Archimedean screw placed obliquely in
the vessel is employed to raise or lift out of the vessel the grain or cereals which
fall to the bottom. A second Archimedean screw is placed horizontally above the
water with its vanes partially immersed therein, for the purpose of gathering the
husks or other light matter floating on the surface of the water; and as this latter
screw revolves it agitates the water and draws the floating husks towards it, by
which they are gathered and conducted away by the vanes of the screw.
form of apparatus may be used separately for washing grain, or it may be used in
combination with other grain washing machines, so that the husks and loose
particles are gathered and collected before the grain enters the washing machine
proper.
Dated this 9th day of February 1891.
This
TASKER & CROSSLEY,
Halifax, Agents.
COMPLETE SPECIFICATION.
Improvements in or connected with Machinery for Washing Grain.
I, FREDERICK WILLIAM GREW, of 17 Sowerby Street, Sowerby Bridge, in
the County of York, Engineer, 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 :—
My invention has reference to apparatus employed in washing beans, peas,
cereals, and the like, the object of my invention being to collect and remove from
the top of a bath the floating husks, pieces of straw, weevilled grains, and other
light matter.
In order that my invention may be more fully understood, I will now refer to the
accompanying drawing illustrative thereof, wherein
Fig. 1 is vertical section of my new or improved apparatus, which I designate a
"swimmer extractor," and
Fig. 2 is a front elevation of same, partly in section.
This apparatus is intended to be used preparatory to the washing of wheat,
barley, and other grain, beans, and the like, and its object is to separate and
remove husks, pieces of straw, unsound or worthless grain, and other light matter,
previous to such grain being washed. The apparatus comprises a vessel A. con-
taining water, so that when wheat, barley, and other grain, beans, or the like, is
placed into the vessel A, the sound or heavy grain falls to the bottom of the vessel,
whilst the husks and other light matters float on the top. The grain is removed
from the vessel by the revolving Archimedean screw B, which lifts the said grain
and passes it out of the opening C where it drops into an ordinary form of machine
for washing grain. A second Archimedean screw is shewn at D, and it is placed

page_text: so that the vanes thereof are partially immersed in the water in order that in may
the better gather the husks and other light matter floating on the surface of the
water, and as this said screw D revolves, it agitates the said water and draws the
floating husks towards it, by which means they are collected and gathered by
the said screw and conducted up the casing E, finally dropping out of the shoot F.
The vanes of the screws are preferably made left handed.
A swing door is placed at the bottom of the vessel A as indicated at G, and a
mud-cock is shewn at H for removing the water out of the vessel.
I is a sluice or slide employed for covering a longer portion of the screw than
does the casing J, this sometimes being required, according to the kind of grain
under treatment, as some of the heavier floating material, by reason of gravity,
falls below the casing J and would be carried up by the Archimedean screw B
before regaining the surface, if not prevented or baffled by the slide I.
This form of apparatus may be used separately for washing grain, or it may be
used in combination with other grain washing machines, so that the husks and
loose particles are gathered and collected before the grain enters the washing
machine proper.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
Firstly. In apparatus for separating husks from grain and other cereals, the use
of the screw D for collecting and removing the said husks and other light matter
off the surface of the water, in manner substantially as described and shewn herein.
Secondly. In apparatus for separating husks from grain and other cereals, the
combination of the screws B and D when employed in the manner and for purposes
described.
Dated this 9th day of November 1891
TASKER & CROSSLEY,
Halifax, Agents.