Improvements in or relating to Dust Collecting Apparatus.
Year: 1892

page_text: Date of Application, 12th Dec., 1892
Complete Specification Left, 10th Oct., 1893-Accepted, 11th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to Dust Collecting Apparatus.
We, TOM PARKINSON and GEORGE MARSDEN PARKINSON of Doncaster Mills,
Doncaster, in the County of York, Millers, do hereby declare the nature of this
invention to be as follows:-
This invention relates to the dust collecting surfaces of apparatus designed for
removing dust and fine particles from air, and the apparatus is particularly
applicable in milling machinery, such as middlings purifiers, and wheat cleaning
apparatus, or in connection therewith. It will be understood however that we do
not confine ourselves to any particular application as the invention may be applied
in most cases where dust, impurities or other fine particles have to be removed from
the air in which they are carried.
We find that by roughening the surface of the plates against which the air
impinges in passing through the apparatus the air is much more readily cleared of
the matters it contains than if smooth plates be employed so that the same effect
may be attained by a much smaller surface exposed to the air than has hitherto
been practicable. Various ways may be employed for carrying this invention into
effect and various methods of roughening the plates may be adopted, but for
practical purposes we find that by covering the metal surface with sand or the like
an excellent effect is obtained. In practice we may coat the plates with shellac,
varnish or other suitable adhesive, and upon this sprinkle Calais sand, powdered
glass, emery or other like material which will produce the surface required.
Instead of the above plan the plates may be roughened or "rocked
on the
same principle as an engraving plate or may be punctured like a nutmeg-grater so
as to catch the particles from the air as it passes. In apparatus of this class the
arrangement is usually such that the air in passing hugs the surface upon which it
is to deposit the matters in suspension so that very fine roughening is usually all
that is required.
This invention is particularly applicable to machines constructed according to
Letters Patent granted to us and numbered 2680 dated February 19th 1890, and
No. 11187 dated March 14th 1892.
Dated this 12th day of December 1892.
W. P. THOMPSON & BOULT,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or relating to Dust Collecting Apparatus.
We TOM PARKINSON and GEORGE MARSDEN PARKINSON of Doncaster Mills,
Doncaster, in the County of York, Millers, 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 dust collecting surfaces of apparatus designed for
removing dust and fine particles from air, and the apparatus is particularly
applicable in milling machinery, such as middlings purifiers, and wheat cleaning
apparatus, or in connection therewith. It will be understood however that we do
not confine ourselves to any particular application as the invention may be applied
in most cases where dust, impurities or other fine particles have to be removed from
the air in which they are carried.

page_text: We find that by roughening the surface of the plates against which the air
impinges in passing through the apparatus the air is much more readily cleared of
the matters it contains than if smooth plates be employed so that the same effect
may be attained by a much smaller surface exposed to the air than has hitherto
been practicable. Various ways may be employed for carrying this invention into
effect and various methods of roughening the plates may be adopted, but for
practical purposes we find that by covering the metal surface with sand or the like
an excellent effect is obtained. In practice we may coat the plates with shellac,
varnish, or other suitable adhesive, and upon this sprinkle Calais sand, powdered
glass, emery or other like material which will produce the surface required.
Instead of the above plan the plates may be roughened or "rocked" on the same
principle as an engraving plate or may be punctured like a nutmeg-grater so as to
catch the particles from the air as it passes. In apparatus of this class the
arrangement is usually such that the air in passing hugs the surface upon which it
is to deposit the matter in suspension so that very fine roughening is usually all
that is required.
This invention is particularly applicable to machines constructed according to
Letters Patent granted. to us and numbered 2680 dated February 19th 1890, and
No. 11187 dated March 14th 1892.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. In apparatus such as described the employment of roughened surfaces
substantially as and for the purpose set forth.
2. The combination with a middlings-purifier or grain cleaner of one or more
roughened surfaces substantially as and for the purpose set forth.
Dated this 9th day of October 1893.
TOM PARKINSON.
GEORGE MARSDEN PARKINSON.
W. P. Thompson & Boult,
Agents for the Applicants.