Improvements in Apparatus for Separating Dust from Air in Flour Mills, applicable also to other analogous purposes.
Year: 1893

page_text: Date of Application, 19th Jan., 1893
Complete Specification Left, 18th Nov., 1893—Accepted, 23rd Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Separating Dust from Air in Flour
Mills, applicable also to other analogous purposes.
I, PATRICK GILLEN of 36 Portland Place Leamington in the County of
Warwick, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention has for object improvements in the construction of apparatus for
collecting and discharging dust, flour or other similar substances held in suspension
in the atmosphere of a mill or workshop.
My apparatus consists of a hopper or chamber preferably of a conical shape, its
upper end being open, and its lower end closed; at or near this lower end I provide
an air inlet for the entrance of the air, which may be driven in by means of a fan
or blower of any suitable construction, and within this hopper or chamber I secure
a number of perforated dished shelves or partitions, arranging the same at suitable
distance immediately above each other.
From the centre of each of these shelves or partitions, descends a tube to the
shelf or partition immediately below and so on until the lowest shelf or partition
is reached, the tube from which extends out through the closed and lower end of
the hopper or chamber, thus forming a continuous tube for the escape of dust.
Upon each of these dished shelves, and immediately above the perforations in same,
I arrange a number of curved baffle plates so shaped as to deflect any current of
air ascending through the perforations down on to the upper surface of the shelf.
In operation the air to be purified or cleansed is driven into the lower end of the
hopper, whence ascending through the perforations in the dished shelves or parti-
tions it escapes out of the upper or open end of the hopper.
The air in passing through these perforations in the shelves or partitions strikes
against the curved deflector plates, which cause it to descend on to the upper surface
of the shelf or partition before it can ascend to the next shelf or partition.
By thus deflecting the current of air on to each successive shelf or partition any
dust or flour contained therein is deposited upon the shelf whence it passes down
through the central tube to the outlet at bottom of hopper, being thus automatically
collected.
I might reverse the shelves and collect the dust in an outer chamber or chambers
instead of the central tube above mentioned, but I now give preference to the
arrangement first above described.
The hopper or chamber may be cylindrical, polyganal or of any suitable section
and may be made of metal or wood as found most desirable, and the number and
position of the dished shelves may be varied to suit each particular case.
Dated this 19th day of January 1893.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Separating Dust from Air in Flour
Mills, applicable also to other analogous purposes.
I, PATRICK GILLEN of 36 Portland Place, Leamington, in the County of
Warwick, 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 for object improvements in the construction of apparatus
for collecting and discharging dust, flour, or other similar substances held in
suspension in the atmosphere of a mill or workshop; and in order that my invention
may be clearly understood reference is had to the accompanying sheet of drawings
upon which :-
Figure 1 is a vertical section of my improved apparatus
Figure 2 being a plan of the same.
My apparatus consists of a hopper or chamber A preferably of a conical shape,
its upper end B being open, and its lower end C closed; at or near this lower end
I provide an air inlet D for the entrance of the air, which may be driven in by
means of a fan or blower of any suitable construction, and within this hopper or
chamber A I secure a number of perforated dished shelves or partitions E arranging
the same at suitable distance immediately above each other.
From the centre of each of these shelves or partitions descends a tube F to the
lowest shelf or partition, the tube from which extends out through the closed and
lower end C of the hopper or chamber A, thus forming a continuous tube for the
escape of dust. Upon each of these dished shelves E and immediately above the
perforations in same I arrange a number of curved baffle plates G so shaped as to
deflect any current of air ascending through the perforations down on to the upper
surface of the shelf E.
In operation the air to be purified or cleansed is driven into the lower end of the
hopper C, whence ascending through the perforations in the dished shelves or
partitions E it escapes out of the upper or open end B of the hopper A.
The air in passing through these perforations in the shelves or partitions E
strikes against the curved deflector plates G which cause it to descend on to the
upper surface of the shelf or partition E before it can ascend to the next shelf or
partition.
By thus deflecting the current of air on to each successive shelf or partition E,
any dust or flour contained therein is deposited upon the shelf whence it passes
down through the central tube F to the outlet at bottom C of the hopper, being
thus automatically collected. This outlet may be closed by means of a door H, or
the outlet of each tube F may be closed by a separate door if found desirable. The
door or doors may be closed by a counterweight or other suitable contrivance.
I might reverse the shelves E and collect the dust in an outer chamber or
chambers instead of the central tube F above mentioned, but I now give preference
to the arrangement first above described.
The hopper or chamber A may be cylindrical, polygonal or of any suitable
section, and may be made of metal or wood as found most desirable, and the number
and position of the dished shelves E may be varied to suit each particular case
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 :-
1. In a dust collector, the combination of the perforated dished shelves E with
the central dependant tubes F as described and shewn upon the accompanying sheet
of drawings.

page_text: 2. In a dust collector, the combination with perforated dished shelves E of
curved baffle plates Gas and for the purpose described.
3. A dust collecto constructed, combined and arranged as described and shewn
upon the accompanying sheet of drawings
Dated this Eighteenth day of November 1893.