IMPROVEMENTS IN DUST-COLLECTORS OR MACHINES FOR SEPARATING DUST FROM AIR
Year: 1885

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings in the County of Middlesex do hereby declare the nature
of my invention for "IMPROVEMENTS IN DUST-COLLECTORS OR MACHINES FOR
SEPARATING DUST FROM AIR" to be as follows:-
This invention, relates to the filtering surfaces of dust collectors having rotating
drums.
In dust collectors of this class as heretofore constructed the filtering surfaces are
made of cloth, stretched in a zig-zag manner in a radial direction in the drums, so
that wedge-shaped chambers are formed, upon the walls of which the dust can
collect. In apparatus of this kind the filtering cloths become either partially or
entirely clogged, especially in damp weather, so that the apparatus ceases to operate
properly. In such cases it is necessary to exchange the filtering surfaces without
interrupting the operation for any length of time.
According to this invention, in order to enable such an exchange without
removing the drum from the apparatus, I form the filtering surfaces of single
frames, upon which cloth or gauze is stretched and which are inserted into the
drum separately. For this purpose the inner and outer bars of which the drum is
composed are provided with grooves turned towards each other and arranged
parallel to the axis of the drum, into which grooves the frames with their filtering
surfaces are pushed in; either laterally or radially.
In the former case one end wall of the drum is provided with radial slips, through
which the said frames, after opening a door arranged in the casing enclosing the
drum, can be pushed into the grooves of the said bars. In the second case, a door
is provided in the side of the casing, which door being opened, the, frames can be
FD 0.31

page_text: pushed, in a radial direction, into the drum. The slots in the end wall of the drum
are dispensed with in this arrangement.
The frames can, in both cases, be secured in position by bars or pins.
This arrangement permits the filtering surface to be exchanged without the
necessity of removing the drum from the apparatus, and has moreover the
advantage that in case some portions of the filtering surfaces are injured it is not
necessary to exchange the whole of the surfaces.
HASELTINE, LAKE & Co.,
For the Applicant.
Improvements in Dust-collectors or Machines for Separating
Dust from Air.
I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex, 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 relates to the filtering surfaces of dust-collectors.
In dust-collectors having movable or fixed drums the filtering surfaces are made
of cloth stretched in a zig-zag manner in a radial direction in the drums, so that
wedge-shaped chambers are formed upon the walls of which the dust can collect.
In apparatus of this kind the filtering cloths become either partially or entirely
clogged, especially in damp weather, so that the apparatus ceases to operate properly.
In such cases it is necessary to exchange the filtering surfaces without interrupting
the operation for any length of time.
In order to enable such an exchange without removing the drum from the
apparatus I form the filtering surfaces of single frames, upon which cloth or gauze
is stretched, and which are inserted into the drum separately.
The invention is illustrated in the accompanying drawing which represents a
central section through the drum of a dust-collector.
A is a drum, the inner bars a and the outer bars b of which are provided with
grooves turned towards each other and arranged parallel to the axis of the drum.
Into these grooves the frames d with their filtering surfaces are pushed in either
laterally or radially.
As shown in the drawing the lower half of the drum is arranged for the frames
to be inserted laterally, while the upper half is arranged for the frames to be
inserted radially.

page_text: In the former case one end wall of the drum is provided with radial slits, through
which the said frames, after opening a door arranged in the end wall of the casing A',
enclosing the drum, can be pushed into the grooves of the bars a and b. In the
second case a door B is provided in the side of the casing through which door the
frames can be pushed in a radial direction into the drum. The slots in the end
wall of the drum are dispensed with in this arrangement. The frames & can in
both cases be secured in position by bars or pins.
This arrangement permits the filtering surfaces to be exchanged, without the
necessity of removing the drum from the apparatus, and has moreover the
advantage that, in case some portions of the filtering surfaces are injured, it is not
necessary to exchange the whole of the surfaces.
This invention is equally applicable to fixed or movable drums, whether the same
are arranged horizontally or vertically.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to
me by my foreign correspondent I declare that what I claim is,
In the drum of a dust collecting machine, the employment of filtering surfaces
which are stretched upon frames & adapted to be readily inserted into and removed
from the drum, either laterally or radially, for the purposes specified.
Duted this 10th day of April 1886
HASELTINE, LAKE & Co.,
Agents for the Applicant.