Improvements in Dust Collectors.
Year: 1893

page_text: Date of Application, 19th Oct., 1893
Complete Specification Left, 18th July, 1894-Accepted, 1st Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Dust Collectors.
I, PEIRSON TURNER, of 82 Mark Lane, in the City of London, Milling Engineer,
do hereby declare the nature of this invention to be as follows:-
--
The object of this invention is to separate dust from air. For this purpose
I provide a cylindrical drum or casing; it is fixed with its axis horizontal and
the air from which the dust is to be separated is driven into the drum by a
fan. The dust laden air enters the drum at the periphery near one end and
tangentially and it passes out axially at the same end by an air trunk which
enters into the drum for a short distance. Along the drum on the inlet side
and parallel to the axis there is a pocket or side chamber extending from end
to end; in this pocket the dust is collected and a creeper or slowly rotating
screw lying at the bottom of the pocket, carries the dust to the end of the drum
and then delivers it into a sack or other receptacle. The entrance of the dust
into the pocket may be assisted by a lip extending along the lower edge of the
pocket; this lip produced by deflecting the wall of the drum inwards near the
entrance to the pocket and so causing it to depart somewhat from a truly
cylindrical form.
Dated this 18th day of October 1893.
CUMI LIED DUIFICATION
Improvements in Dust Collectors.
I, PEIRSON TURNER, of 82 Mark Lane, in the City of London, Milling 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 :-
The object of this invention is to separate dust from air. For this purpose I
provide a cylindrical drum or casing; it is fixed with its axis horizontal and the air
from which the dust is to be separated is driven into the drum by a fan. The dust
laden air enters the drum at the periphery near one end and tangentially and it
passes out axially at the same end by an air trunk which enters into the drum for
a short distance. Along the drum on the inlet side and parallel to the axis there is
a pocket or side chamber extending from end to end; in this pocket the dust is
collected and a creeper or slowly rotating screw lying at the bottom of the pocket,
carries the dust to the end of the drum and then delivers it into a sack or other
receptacle. The entrance of the dust into the pocket may be assisted by a lip
extending along the edge of the pocket.
Figure of the annexed drawings is an elevation of a dust collector constructed
in accordance with my invention.
Figure 2 is a transverse section and
Figure 3 is a plan of the same.
a a is a cylindrical drum or casing, it is supported upon a framework b, the axis
of the cylinder being in a horizontal position. The dust laden air is led into the
drum in a tangential direction.

page_text: The machine may be made either single or double acting; that is to say either
with an inlet and an outlet at one end only or with both ends alike furnished with
an inlet and an outlet.
The drawings represent a double acting machine; c c are the two tangential
passages by which the air blast enters; and d d' are the air outlets. In each of the
air entrances there is a regulating valve e pivotted at its lower edge and closing
upwards. The air outlets are trunks extending from the ends of the drum into the
interior, they may be open from end to end but I find it advantageous partially to
close the outlet from each trunk by a disc d' which is carried by radial arms as the
drawing indicates. e is a trough like receptacle or pocket fixed beneath an opening
in the drum which extends from end to end of it. The pocket e contains a continuous
screw which is caused slowly to revolve by a driving strap passing around a pulley f
upon its axis. At the other end of the pocket there is a spout, on to which a sack
to receive the dust may be tied.
9 is a lip which aids the entrance of the dust into the pocket, it forms part of
a moveable frame which fits loosely into its place within the drum. Behind the
lip there is a plate g¹ also forming part of the moveable frame, it conforms
approximately to the curvature of the drum but leaving a passage by which any
air which may pass beneath the lip re-enters the drum. The lip frame is
adjustable so that the lip may be set to project more or less as may be found most
suitable.
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. A dust collector substantially as described consisting of a drum mounted in a
horizontal position and having tangential entrance or entrances for the dust laden
air and axial exit passage or passages for the purified air and also having a side
pocket for receiving the dust.
2. A dust collector substantially as described and illustrated by the annexed
drawings.