Improvements in Filters.
Year: 1896

page_text: Date of Application, 28th Dec., 1896-Accepted, 3rd Apr., 1897
Improvements in Filters.
I, MAX KLEOFF, of 5 Bahnhofstrasse, Guben, in the Kingdom of Prussia, part
of the German Empire, Merchant, 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 the present invention is a filtering apparatus which is designed to
offer to the liquid to be filtered the possibility of depositing impurities by leading
it over inclined surfaces, and by continuously altering the direction of movement
of the liquid being filtered. Liquids of great specific gravity, such as water, are
especially suitable to assist this filtering action. For this purpose such liquids
are caused to form the undermost portion of the fluid column passing through the
filter, the upper portion of said column consisting of the liquid to be filtered.
In the annexed drawings Figs. 1 and 2 show two different constructions of this
apparatus in vertical section.
"The difference between the two constructions shown in Figs. 1 and 2 consists in
the arrangement of the channel which conducts the purified Huid to the collecting
vessel.
Above the funnel a a sieve b is arranged which retains the coarser impurities;
baving passed through the sieve the fluid runs along the oblique surface of; the
funnel a and deposits further impurities in the space formed by the projection of
the tube c through the bottom of the funnel a. The fluid passos dowu the tube c
and is forced, by reason of the weight of the water above, through the filter e.
Thus the preliminary filtration is effected. A fluid of great specific gravity, such
as water, being placed in the lower part of the apparatus prevents the impurities
from passing through the filter e. They are retained in consequence of tho
resistance produced by the said heavy liquid and are deposited upon the lower
surface of f.
The same action takes place when the liquid passes through the filter e¹, the
impurities being deposited upon the surface off in the same manner as above
described.
The fluids assisting the filtering action, together with the deposited impurities,
can be drawn off by means of the screw-plug g; this plug is normally closed.
By the fact that in Fig. 2 the fluid to be filtered, after having passed to the
second filter, flows in an opposite direction through separate tubes into the
collecting vessel, the second vessel f is unnecessary; the undorpart of this
collecting vessel serving in this case for the reception of the fluid of great specifio
gravity allows the impurities still contained in the liquid being filtered to be
deposited. An outlet cock i is arranged at the underpart of the apparatus.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. A filtering apparatus characterized by the arrangement of separate filters in
such a manner one to the other that the liquid to be filtered can only pass through
the said filtering apparatus by continually changing its direction; with or without
the arrangement of water or other liquid reservoirs at the lower part of the said
apparatus.

page_text: 2. In a filtering apparatus-characterized by the arrangement of separate filters
in such a manner one to the other that the liquid to be filtered can only pass
through the said filtering apparatus by continuously changing its direction; with
or without the arrangement of water or other liquid reservoirs at the lower part of
the apparatus the arrangement of a funnel shaped inlet a, and of a protruding
off-flow tube c.
Dated this 28th day of December 1896.
M. KLEOFF,
Per W. H. Beck,
115 Cannon Street, London, Agent.