Improvements in Separating Dust from Hay and other Fibrous Materials and in Apparatus therefor.
Year: 1898

page_text: Improvements in Separating Dust from Hay and other Fibrous
Materials and in Apparatus therefor.
I, WILLIAM SUTCLIFFE, of 12, Dale Street, Sowerby Bridge, in the County of
York, do hereby declare the nature of this invention to be as follows:-
This invention has for its object an apparatus for separating dust from hay,
straw, cotton, and other like fibrous materials and the invention consists in passing
materials with a blast or in-draft of air tangentially into circular chamber round
which the materials rotate the air and dust passing by through a hole in the
centre while the fibrous materials drop into a hopper at the bottom. In order
still further to purify the material I arrange the hopper in two parts, the upper
sliding into the lower and adjust one or the other of them so that there shall be
a greater and lesser crack for the admission of air between the two. The air
rushing between the two blast out any further dust which may be passing with
the material round the periphery of the cone pyramid or cylinder. Of course
in mentioning cylinder it obvious that in place of a conical hopper, a single
cylinder might be arranged with means for collecting the hay or fibrous material
at the bottom, and a regulated entrance crack be round the outside of the cylinder
somewhat near the bottom or even on the bottom surface of the cylinder where
the stuff is collected by a revolving or other device.
To prevent fibrous material passing out with the dusty air, a grid or grating
or wire or other material is inserted across the central hole out of which the dusty
air passes. A fen can be placed above this hole to draw the air and dust or a
fan can be placed to drive the air into the passage entering the chamber tan-
gentially, in which case the dusty fibrous material is thrown into this passage
and is driven along by the air. The dusty air can be separated afterwards by
a tornado or other well-known dust separating device.
0911 of a 1000
Improvements in Separating Dust from Hay and other Fibrous
Materials and in Apparatus therefor.
I, WILLIAM SUTCLIFFE, of 12, Dale Street, Sowerby Bridge, in the County of
York, do hereby declare the nature of this invention and in what manner the
Price Sd71

page_text: same is to be performed, to De particular
the following statement:-
-
This invention has for its object an apparatus for separating dust from hay,
straw, cotton, chaff, and other like fibrous material. It is best described by aid
of the accompanying drawings, in which,
Figure is a vertical section of the apparatus,
Figure 2 horizontal section through the bottom of the cylindrical portion.
Figure 3 plan with the top of the fan case removed,
Figure 4 side elevation, and
Figure 5 a partial plan showing the driving device.
In these A is the tangential entrance of a blast of air carrying with it the hay,
straw, or other material to be cleansed. B a cylindrical casing into which the
chute A enters tangentially. C a cylindrical sleeve open at the bottom attached
to the upper part of chamber B which is cut away at this point. D is a steel plate
perforated all over with holes as close together as practicable, and about two
millimetres in diameter. E is a brush revolving on shaft F and brushing the
under surface of the plate D so as to keep it clean. G is a fan on shaft F. I
is a hopper preferably square, but for some purposes it can be made hexagonal or
other shape for most purposes however, especially for separating dust from hay,
- straw and chaff, I find a hopper square in section is the best. J is a spiral blade
fixed to shaft F and used for pressing the material down through the narrow
portion of the hopper into the two side legs KK. LL are adjustable air openings
in the legs or spouts K. M a counterbalanced leather covered door hinged at N
and having a weight 0. This weight can be of varying dimensions to suit the
particular material that is being cleaned. In some cases it can be done away with
altogether. P is a pulley for driving the shaft F. Q a cross piece carrying the
step R of the shaft F and supported on frame-work SS. T is a pulley driving
the pulley P and U the main driving pulley, both of them on shaft W which is
supported by pedestals V on the vertical frame-work S.
The mode of action is as follows;-
The grain, hay, cotton, chopped straw, chaff, or other light fibrous material is
fed into a stream of air passing along conduit A in any desirable manner. The
material with the air entering the chamber BI tangentially revolves rapidly
round it forming a vortex and meeting a further ascending current passing up from
the openings L and from the place left open by the doors M it is, while being
dashed round against the flat sides of hopper I, separated from its dust, the dust
and air flies up through the grating D which stops any fibrous material that would
otherwise pass up and escape outwards through the orifice H, being impelled in
its course by the fan G. Any fibrous material that would tend to choke the holes
in the plate D is brushed off by the brush E. The weight O allows the door M
to open from time to time and allow the hay or other material to pass out and the
spouts K are prevented from choking by their increased diameter as they approach
the door M. The sliding cover of the orifice L is arranged so that any desired
amount of air can be admitted.
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. The improvement in the process of separating dust from hay and other fibrous
materials which consists in passing the fibrous materials tangentially into a vortex
impeded below extracting the heavy material at the bottom and allowing a
regulated current of air to rise up near the centre of the vortex and allowing the
air and dust to escape from the centre of the vortex substantially as described.
2. The apparatus for separating dust consisting of a chamber having a circular
or nearly circular upper portion a tangential entrance into that upper portion
a pyramidal or other bottom giving the necessary friction to the air vortex therein

page_text: a regulated air opening near the bottom of the inverted pyramid or hopper and
an exit for the air at the centre of the top of the chamber substantially as described.
3. In an apparatus for separating dust from hay and the like having a dust
separating chamber in which the incoming air and fibrous material form a vortex
the combination with such chamber of a guarded hole such as C at the top having a
grid D means for keeping the grid clean and an exhausting fan such as G.
4. The apparatus for separating dust from hay and other fibrous materials
substantially as herein described and illustrated in the accompanying drawings.
Dated the 22nd day of November 1898.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.