Improvements in Apparatus for Arresting Dust Particles and Separating Dust from Air.
Year: 1892

page_text: Date of Application, 3rd Dec., 1892
Complete Specification Left, 23rd Aug., 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Arresting Dust Particles and
Separating Dust from Air.
I, WILLIAM HENRY INCE, of Hayle Roller Mills, Hayle, in the County of
Cornwall, Mill Manager, do hereby declare the nature of this invention to be as
follows:-
This invention relates to new and useful improvements in the manner of arresting
dust particles suspended in air and travelling at the same rate as the air, that is
blown from any kind of dust making machinery; such air and dust passing the
first series of arresters is partly freed from dust, the latter being removed by a worm
conveyor or otherwise. The object of my invention is to produce a simple and
efficient apparatus, that will arrest and collect the finest dust. The air in passing
through the arresters is practically unconfined and will therefore not cause back
pressure on the exhaust fans. I also wish it to be understood that the air must
pass several series of the arresters to thoroughly cleanse the air from all dust, and
that the arresters are constructed in such a manner that they will be suitable for
fixing in any kind of dust collecting chamber, or dust collector, and are also
applicable to be fixed in exhaust trunks connected to milling or other machines,
and for all ventilating purposes. The apparatus will also be suitable for applying
over the shaking sieves of middlings purifiers in the exhaust chamber to equalize
the air currents and to deflect and precipitate the dust particles that are taken up
through the sieve before reaching the exhaust fan; this latter arrangement will
form practically a tray of dust arresters over the silk frame of the purifier sieve as
before indicated.
The construction of the arresters and apparatus is substantially as follows:-
A frame is constructed of wood or metal the required size of the air trunk, or
dust collector chamber. This frame can be fixed in a vertical or oblique position
in the air trunk as desired. The frame consists of a series of vertical openings
about " to 2" wide and about 1" to 3" blank space. On the side of the frame
meeting the flow of air and dust, the openings have sides extending from 1" to 4"
deep and meeting the air; this makes a direct through opening, and the blank
space between the openings will now form troughs for the reception of the dust
particles, which are thrown into the troughs by deflectors. The deflectors which
partly cover the openings, are fixed some little distance from the openings. These
deflectors are slightly curved in the direction of the flow of air, or they can be made
triangular in shape as most suitable. For some work I shall need to make the
arrester frame with circular openings somewhat resembling the smoke tubes in a
locomotive boiler. Over these openings will be fixed, a little distance away, cone
shaped deflectors to stop the dust passing and yet allow the air to pass freely, and
for heavy dust it will be desirable to use in the first and second dust chambers
deflectors made on the Venetian blind principle. The latter may be fixed to the
framing of the dust chamber, or made to rotate in the air chamber by the action
of the air as desired. The dust laden air enters the first chamber and passes
through the first series of arrester frames; the heaviest dust particles are caught
and delivered from this chamber and so the air passes on to the next series in like
manner until the air has passed a sufficient number to thoroughly free it from all
dust, when the air escapes from the apparatus into the atmosphere. In constructing
dust collector machines, the apparatus may have a double series of arrester frames
and chambers in height, one series fixed over the other in such a manner as to take
•

page_text: two worm conveyors or other method for collecting and delivering the dust
automatically from the machine.
Dated this 3rd day of December 1892
ALLISON BROS.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Arresting Dust Particles and
Separating Dust from Air,
I, WILLIAM HENRY INCE, of Hayle Roller Mills, Hayle, in the County of
Cornwall, 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 relates to new and useful improvements in the manner of arresting
and collecting dust particles suspended in air, which is blown from any kind of
dust making machines, and in order to enable such invention to be clearly under-
stood I will now proceed to describe same by the aid of the accompanying
drawings, in which
Fig. 1 is a longitudinal sectional view of the arresters and exhaust trunks.
Fig. 2 is a cross sectional view of the arresters.
Fig. 3 is a sectional view of a frame in which arresters of tubular form are
employed, showing such arresters in position in an exhaust trunk.
Fig. 4 is an end view of one of the arrester frames snown in Fig. 3.
Fig. 5 is a sectional view of a double set of tube arresters working in a vertical
position.
In constructing a frame of arresters for an ordinary exhaust trnnk, I divide the
latter up into sections as shown in Fig. 1. The arrester frame A is made to fit
the air trunk B, and the arrester plates C are connected to such frame by any
suitable means. The arresters are formed of a succession of plates preferably of
metal. The plates C are placed a short distance from each other, this distance
varying according to requirements. The strips or plates of metal are bent in the
direction to meet the flow of air and dust (see Fig. 2), forming sides b about 4 inches
deep, thus making a direct through passage between the plates, and the blank
spaces between such sides will then form troughs for the reception of the dust
particles, which are thrown into such troughs by deflectors D. The deflectors D.
which partly cover the openings e between the troughs, are fixed some distance
away from such openings. They may be slightly curved in the direction of the
flow of air, or be made of triangular shape as shown in Fig. 2, as found most
suitable. The arrow X shows the deflection of the dust particles thrown into
the troughs C, and the arrow Z shows how the air escapes, leaving the dust
behind.
It will be understood that the combination of the troughs C and deflectors D
can be used in a horizontal position (as shown in Fig. 1), or in a vertical position,
in any kind of dust chamber, or in the exhaust chamber of middlings purifiers, in
which case they will be fixed over or upon the shaking sieve, or in any dust making
machine whatever, without departing from the principle of my invention.
Fig. 1 shows 3 sets of arresters in position in an exhaust trunk, and E are the
outlets for the dust which is arrested by the troughs C.
For some kinds of dust it is found that the arresters are more effective when
made with circular openings somewhat resembling the smoke tubes in a locomotive
boiler, such a construction being shown in Fig. 3. When I use this form of
arrester in a horizontal position, I fix over the tubes C, and a little distance away
therefrom cone shaped deflectors D, to stop the dust passing, and yet allow the air
to pass through such tubes freely. The arrow X shows how the dust particles are
deflected and arrested by the plate A, in which the tubes C are inserted, and the

page_text: arrow Z shows how the air escapes into the next chamber, the dust falling into
the hopper or outlet E at the bottom.
When I use the tubular form of arrester, with the tubes C placed in a vertical
position, as shown in Fig. 5, the cone shaped deflectors D are not employed, but I
use a small circular plate G over the top side of the tube plate A. This plate G
is connected to a centre spindle H, and is arranged so that it can be adjusted to
regulate the amount of air that can pass through the tubes C, and also to check
the dust particles from rising up from the lower chamber. It will therefore be
seen that the amount of air passing through the tubular arresters from the bottom
chamber I is under control, and also that the tubular arrester plates A may rotate
with the centre spindle H if desired.
The spindle H may be provided with sweepers K, which will deliver the dust
deposited to a suitable outlet, such as E.
For some kinds of heavy dust it may be desirable to use, in place of the
circular openings or tubes in the dust chamber, deflectors made on the Venetian
blind principle; the latter may be fixed to the frame of the dust chamber, or be
made to rotate by the action of the air or otherwise. Fig. 5 shows a double series
of tubular arresters in working position, but I do not confine myself to the number
of chambers to be used, how the dust is to be delivered from these chambers, or
the shape of the chambers, as my invention is applicable to any shape of dust
chamber or dust making machine. In use the dust laden air enters the first
chamber I by the spout or pipe J, all the heaviest dust particles being caught and
delivered from this chamber, and the air and the lighter dust passes through the
arrester frame to the next series in like manner, until the air has passed a sufficient
number to thoroughly free it from all dust, when it is allowed to escape into the
atmosphere.
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 :-
In dust collecting apparatus
1. The combination of a set or sets of arresters consisting of troughs with spaces
between same, the sides of such troughs extending in the direction of the entrance
of the air, and of deflectors arranged a short distance in front of such troughs
and opposite the openings between same, substantially as and for the purpose
specified.
2. The combination of a set or sets of horizontal tubes through which dust
laden air is caused to pass, and of deflectors arranged a short distance in front
of such tubes and opposite the openings of same, substantially as and for the purpose
specified.
3. The combination of a set or sets of vertical tubes through which dust laden
air is caused to pass, and of an adjustable plate arranged above each set of tubes,
substantially as and for the purpose specified.
4. The combination of the vertical tubes C, plates G, carried by a central
spindle H, and either with or without sweepers K also carried by such central
spindle, all substantially as and for the purpose specified, and as shown in Fig. 5 of
the drawings.
5. The combination of a set or sets of arresters consisting of laths or bars
arranged on the principle of a Venetian blind, through which the dust laden air is
caused to pass, either with deflectors arranged in front of such laths or bars and
opposite the openings between same, or with a plate arranged above such laths or
bars, substantially as and for the purpose specified.
Dated this 19th dow of August. 1893.
ALLISON BROS.,
Agents for the Applicant.