Improvements in Apparatus or Means for Separating Dust and Light Particles from Air, Chiefly Designed for Use in Flour Mills.
Year: 1888

page_text: Date of Application, 7th Dec., 1888
Complete Specification Left, 7th Sept., 1889-Accepted, 12th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus or Means for Separating Dust and Light
Particles from Air, Chiefly Designed for Use in Flour Mills.
I, GEORGE FREDERICK ZDIMER, Engineer of 34, Beverley Road, Anerley in the
County of Surrey do hereby declare the nature of this invention to be as follows:-
This invention relates to Apparatus for separating and collecting dust, or the like
from air by means of electricity, generated in rods, or other suitably shaped bodies of
electrically non-conducting material, between which the air containing dust or the
like has to pass. The said invention is more particularly adapted for use in machines
purifying grits and middlings, and in collecting the dust from the air trunks, or pipes
through which the dust laden air is passing, in Flour Mills.
Machines for purifying middlings, or grits produced in the manufacture of flour
have an oscillating sieve through which a current of air is drawn, this current raising
from the sieve the lighter particles. In some cases these particles are carried by the
air current to a stive room, in some cases they are arrested by a travelling filter cloth,
through the pores of which the air passes, leaving the lighter particles deposited on
it. In some cases, in addition to the travelling filter, there has been applied imme
diately above the sieve a grid of throughs, or channels with spaces between them,
these throughs, or channels receiving those of the particles which are carried up between
the throughs but fall back before leaving the machine.
By this invention the dust and light particles are collected by means of Electricity
as hereinafter described.
Above the sieve a serie of rods, sheets, or plates made from glass, vulcanite, or any
other electrically non-conducting material is suitably arranged and rendered continu-
ously electric through friction, or otherwise.
Being electric, these rods, plates or sheets will attract and arrest the dust and
light particles, contained in the air passing between them; the dust can then be
removed from the rods, plates or sheets by suitable mechanical means, whilst the clear
air escapes through the fan of the purifier.
To apply this invention as a Dust-Catcher in connection with air trunks, I arrange
a similar serie of rods sheets, or plates rendered electric, in suitably shaped boxes, or
chambers, through which the dust laden air from the air trunks is drawn, or blown.
The dust and other light particles are by these means attracted and arrested and can
be removed by various mechanical means, whilst the clear air is allowed to escape.
Dated this Seventh day of December 1888.
G. F. ZIMMER.
COMPLETE SPECIFICATION.
Improvements in Apparatus or Means for Separating Dust and Light
Particles from Air, Chiefly Designed for Use in Flour Mills.
I. GEORGE FREDERICK ZIMMER, Engineer of 34 Beverley Road, Anerley in the
County of Surrey 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 Apparatus for Separating and Collecting dust, or the like
from air by means of Electricity, generated in rods or other suitably shaped bodies
of electrically non-conducting material between which the air containing dust, or the
like has to pass. The said invention is more particularly adapted for use in machines
purifying grits and middlings and in collecting the dust from the air trunks, or pipes

page_text: through which the dust laden air is passing in Flour Mills or other Factories dealing
with dusty materials.
Machines for purifying middlings or grits produced in the manufacture of flour
have an oscillating sieve through which a current of air is drawn, this current raising
from the sieve the lighter particles. In some cases these particles are carried by the
air current to a stive room, in some cases they are arrested by a travelling filter cloth,
through the pores of which the air passes, leaving the lighter particles deposited on it.
In some cases, in addition to the travelling filter, there has been applied immediately
above the sieve a grid of troughs or channels with spaces between them, these troughs
or channels receiving those of the particles which are carried up between the troughs;
but fall back before leaving the machine. By this invention the dust and light particles
are collected by means of electricity as hereinafter described. Above the sieve one or
more series of rods, sheets or plates made from glass, vulcanite, or any other electri-
cally non-conducting material, are suitably arranged and rendered continuously
electric through friction or otherwise. Being electric these rods, plates or sheets will
attract and arrest the dust and light particles contained in the air passing between
them; the dust can then be removed from the rods, plates or sheets by suitable
mechanical means whilst the clear air escapes through the fan of the purifier. To
apply this invention as a Dust Catcher in connection with air trunks in Flour Mills or
other Factories dealing with dusty materials, I arrange one or more series of rods,
sheets or plates rendered electric, in suitably shaped boxes or chambers through which
the dust laden air from the air trunks is drawn, or blown. The dust and other light
particles are by these means attracted and arrested and can be removed by various
mechanical means, whilst the clear air is allowed to escape.
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 Middlings Purifiers and Dust Catchers generally, the use of Electricity for
attracting, arresting and collecting dust and light particles contained or suspended in
the air passing through them substantially as herein described.
Dated this Seventh day of September 1889.