IMPROVEMENTS IN MACHINERY OR APPARATUS FOR CLEANING MALT AND GRAIN
Year: 1885

page_text: I, JOHN JAMES ROBSON, of the Firm of James Robson & Sons of Crabble Hill
Factory, Dover in the County of Kent, Engineer do hereby declare the nature of
my invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR CLEANING
MALT AND GRAIN" to be as follows:-
My Invention relates to a machine or apparatus for cleaning Malt, wheat and
other grain, or seeds which I may term an Aspirator, and it consists particularly in
the use of a vertical trunk or tube having within it a series of inclined planes or
guides, in combination with an exhaust fan or ventilator placed above.
The malt or other substance to be freed from dirt and foreign matter being
introduced at the top of my vertical trunk falls from one inclined plane to the
other, acted upon during the whole of its descent by the current of air drawn
through this trunk by the exhaust fan, whereby; all light dirt or foreign matter
may be carried away into a dust room or elsewhere, the cleansed Malt or Grain
passing by a shoot or otherwise to rolls, screens, or other receptacles.
I may use a vertical trunk of any required dimensions, according to quantity to
be cleaned, and fitted with my guides in connection with an ordinary vertical or a
horizontal trunk leading to an Exhaust Fan, fitted if necessary with a scouring
case, and Roll fitted with studs to stir the Malt or raw grain before it enters my
improved vertical trunk, the Malt or raw grain passing down the trunk falling
from guide to guide and meeting the air drawn up as aforesaid.
I may fit my vertical trunk with a balanced valve having adjustable weights for
the purpose of regulating the admission of air into the trunk and equalizing the
draught of the fan.

page_text: COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Cleaning Malt
and Grain.
I JOHN JAMES ROBSON, of the firm of James Robson & Son's of Crabble Hill
Factory Dover in the County of Kent, Engineer do hereby declare the nature of
my invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR CLEANING
MALT AND GRAIN" and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
My Invention relates to a Machine or apparatus for cleaning Malt, wheat, and
other grain or seeds, which I may term an aspirator, and it consists particularly in
the use of a trunk or tube having within it a series of inclined planes or guides, in
combination with an exhaust fan or ventilator placed above.
The malt or other substance to be freed from dirt and foreign matter being
introduced at the top of my vertical or inclined trunk falls from one inclined plane
to the other, acted upon during the whole of its descent by the current of air drawn
through this trunk by the exhaust fan; whereby all light dirt or foreign matter
may be carried away into a dust room or elsewhere, the cleansed malt or grain
passing by a shoot, or otherwise, to rolls, screens, or other receptacles.
The accompanying sheet of drawing shows in sectional elevation a machine
embodying my improvements.
A indicates the trunk (which may be of any required dimensions according to
quantity to be cleaned) fitted with the guides or inclined planes a, in connection
with any ordinary trunk leading to the exhaust fan B; C indicates a scouring
case and rolls having studs to stir the malt or raw grain before it enters the
vertical trunk A.
The malt or raw grain passing down this trunk, A falls from guide to guide a
and meets the air drawn up by the fau B; D indicates a balanced valve having
adjustable weights for the purpose of regulating the admission of air into the trunk
and equalizing the draught of the fan B; E spoutings.
The trunk leading to the exhaust fan B may be horizontal instead of vertical if
desired.
In some cases I may dispense with the scouring roll C and I may equalize the
draught of the fan B in any convenient manner.
The frame, trunk and fan may be of wood or of iron and with iron shafts; or
any suitable material or combination of materials may be used in the construction
of my machine.
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. A Machine or apparatus for cleaning Malt and Grain constructed, combined
and arranged to operate substantially as hereinbefore described and shown on the
accompanying sheet of Drawing.

page_text: 2. In a machine or apparatus for cleaning malt and grain a vertical or inclined
trunk fitted with inclined planes or guides substantially as and for the purpose
specified.
3. In a machine or apparatus for cleaning malt and grain, a vertical or inclined
trunk fitted with inclined planes or guides in combination with an exhaust fan
substantially as and for the purpose specified.
4. In a machine or apparatus for cleaning malt and grain having a vertical or
inclined trunk fitted with inclined planes or guides and an exhaust fan, a scouring
roll arranged to operate substantially as hereinbefore described.
5. In a machine or apparatus for cleaning malt and grain having a vertical or
inclined trunk fitted with inclined planes or guides and an exhaust fan, a regulating
valve for equalizing the strength of the fan substantially as hereinbefore described.
L 1
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