Improvements in Aspirators or Apparatus for Separating Dust from Chaff and other like Materials.
Year: 1895

page_text: Date of Application, 4th June, 1895
Complete Specification Left, 4th Mar., 1896-Accepted, 18th Apr., 1896
PROVISIONAL SPECIFICATION.
Improvements in Aspirators or Apparatus for Separating Dust from
Chaff and other like Materials.
We, ARCHIBALD STEWART BUCKLE, of Stanemore, Banstead in the County
of Surrey and WILLIAM SUTCLIFFE, of 12, Dale Street, Sowerby Bridge, in
the County of York, Engineers, do hereby declare the nature of this invention to
be as follows:-
This invention has for its object an aspirator in which chaff, cut straw or other
like matter can be aspirated of its dust. With the ordinary aspirator in which the
entire area of the spout is occupied by the descending material, if the ascending
current be strong enough, the chaff is blown away with the dust, whereas if it be
not strong enough the descent of the chaff prevents the ascent of the outside air.
Now our invention is designed to leave a clear open space through the centre of
the aspirator for the column of air and yet subject the descending chaff to the
action of this air so that the air shall carry off the dust while allowing the chaff to
descend. It consists essentially in forming what might be termed a broken
spiral of shallow troughs extending round a vertical spout which can either be
square or round or other shape. These troughs are all inclined in one direction of
spiral, preferably at about fifty degrees from the horizontal, and each trough feeds
en to the next with preferably a fall of about nine inches. In the centre between
the troughs there is a clear space for the current of air to rise in. The current of
air rising up through this apparatus can be either propelled or induced by a fan,
and either deliver at once into the open air or into a tornado. If it be induced
into a tornado we prefer to place the inducing fan beyond the tornado, and in the
passage up to the toruado to place a regulating valve.
Where the current of air
passes through a tornado or is allowed to escape into the open air we prefer before
it leaves the aspirator to expand the air into a dead air chamber surrounding the
spout. The heavy dust falls thus into the dead air chamber and can be collected
while the light dust goes on with the air to the tornado, or escapes direct into the
atmosphere.
Datod the 1st day of Juan 100%
Improvements in Aspirators or Apparatus for Separating Dust from
Chaff and other like Materials.
We, ARCHIBALD STEWART BUCKLE of Stanemore, Banstead in the County
of Surrey and WILLIAM SUTCLIFFE of 12, Dale Street, Sowerby Bridge in the
County of York, Engineers, 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 for its object an aspirator in which chaff, cut straw, hay or

page_text: other like matter, can be aspirated of its dust. With the ordinary aspirator in
which the entire area of the spout is occupied by the descending material, if the
ascending current be strong enough, the chaff is blown away with the dust, whereas
if it be not strong enough for this, the descent of the chaff prevents the ascent of
the current of air.
Now our invention is designed to leave a clear open space through the centre of
the aspirator for the column of air and yet subject the descending chaff to the
action of this air, so that the air shall carry off the dust, while allowing the chaff
to descend.
The invention is best described by aid of the accompanying drawings, in
which
Fig. 1 shows the invention applied to a chaff cutter, and
Fig. 2 is a sectional plan of the aspirator.
⚫ fan.
A is the aspirator, B a chaff cutter, C spout leading from the chaff cutter to
D, a tornado dust separator. E is the spout carrying off the purified air, G the spout
delivering the dust. H the pulley driving the scraping device and I the pulley
driving the fan, exhausting the air from the centre of the tornado, and consequently
indirectly from the aspirator into spout E. The chaff cutter is arranged so as to
cut the chaff into chamber K whose bottom is open to the aspirator A. L is an
arrangement of a diagrammatic representation of any desired valve for regulating
the force of the wind up the aspirator, without altering the speed of the exhaust
An ordinary double flap valve, for instance, can be used, this valve and the
holes in the hood or cover of the chaff cutter serve the further purpose of drawing
in the dust caused by the feeding in of the bay or other material which otherwise
would remain in the room. In Fig. 2 which is a plan view of the aspirator itself,
it will be seen that four spouts S1, S2, S3, and S4 sloping downwards from the
sides carry the cbaff from the chaff cutter. The chaff falls from the chaff cutter
through chamber K on to spout S 1, from thence it falls through the current of air
on to S 2, and so on to the bottom. At the bottom of the spout is an opening N
regulated by a sliding valve Q. It will be clear that the arrangement as described
can be used, either in parts or as a whole, for the cleaning or dusting of malt
combings, feathers etc., as well as grain or seeds.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. The combination, with a chaff cutter or other device, (feeding chaff or other
like material,) of an aspirator, in which the material falls from one shelf or
obstruction to another till it reaches the bottom of the aspirator, while alongside,
between, or among these shelves or obstructions is a clear passage up the aspirator,
whereby a current of air passing up through the aspirator can in part act on the
falling material, while another part of the current is passing upwards by the side
of the falling material.
2. The combination, of a straw cutter or other feed of chaff and the like, with
an aspirator having throughout its course a straight or devious passage clear of
obstruction and alongside the falling material, with a tornado or other dust collector
and a fan or other device for forcing or inducing an upward current through the
aspirator and dust collector.
3. The special arrangement and construction of mechanism substantially as and
for the nurnoses described
Dated this 3rd day of March 1896.
WM. P. THOMPSON & Co.,
-
Of Liverpool, Manchester, Birmingham, and London, Patent Agents.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, and London, Patent Agents.