Improvements in Filters.
Year: 1889

page_text: Date of Application, 30th Apr., 1889
·Complete Specification Left, 18th May, 1889-Accepted, 14th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in Filters.
I, HENRY ROESKE, Hydraulic Engineer, of 631 Snyder Avenue, Phila·lelphia,
Pennsylvania, United States of America do hereby declare the nature of this invention
to be as follows:-
My improved filter comprises a double chambered tank, that is to say a tank
preferably of cylindrical shape having a primary chamber outside of and surrounding
a secondary chamber whose walls are concentric with those of the main tank. The
primary chamber is divided into compartments by partitions provided with adjust-
able valves.
The secondary chamber is also provided with adjustable valves for controlling the.
flow of liquid from the primary chamber into the secondary chamber.
The liquid is introduced into the primary chamber through a distributing pipe
having connected therewith branch pipes each provided with two valves. A vertical
stand pipe is provided which extends centrally upward from the bottom of the secondary
chamber and is connected with the upper end of the said chamber by means of
pipes provided with valves. In the primary chamber are arranged flushing pipes
or canals provided with plugs for closing the same. These pipes or canals are
preferably of triangular form in transverse section and the bases thereof are
perforated. Suitable heating pipes are provided which extend downward into the
secondary chamber and are provided at their lower ends with valves.
chambers are partly filled with suitable filtering material. The liquid enters by
the distributing pipe and flows through the primary chamber into the secondary
chamber and thence through the connecting pipes into the central stand pipe. The
partitions which sub-divide the primary tank may be perforated. The two chambers
may if desired be otherwise arranged the primary chamber being placed between
the two compartments of the secondary chamber.
9011
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*11000
The two
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Filters.
I, HENRY ROESKE of 520 S. Delaware Avenue, Philadelphia in the City and
County of Philadelphia, State of Pennsylvania, United States of America, Filter
Engineer and Expert 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 :-
My invention consists of a filter formed of a double chambered tank, the primary
chamber having compartments which may be placed in and out of communication
with each other, and with the secondary chamber, the latter being in communication
with a stand pipe, as the exit for the filtered fluid. By this provision the fluid will be
found to be effectively filtered.
The invention also consists of means for flushing or cleansing the filter, as will
be hereinafter set forth. It also consists of other novel features, as will be hereinafter
described.
In the accompanying drawings
Figure 1 represents a partial side elevation and partial vertical section of a filter,
embodying my invention.

page_text: Figure 3 represents a perspective view of a detached portion on an enlarged scale.
Figure 4 represents a view of a portion of one of the partitions detached.
Figures 5, 6, 7 and 8 represent top or plan views of different shaped tanks, on
reduced scales.
Similar letters and numerals of reference indicate corresponding parts in the several
Figures.
Referring to the drawings.
A designates a closed tank constructed with concentric walls a, b, in the form of an
annulus, producing two chambers B, C.
Within the outer or filtering chamber B, are vertical partitions 1 which extend
radially and divide said chamber into a number of compartments D, each partition
having at bottom a valve 2, whereby the several compartiments may be placed in and
out of communication.
At the bottom of the wall b, there are valves 3, which are located relatively to the
compartments D whereby the inner chamber C may be placed in and out of com-
munication with said compartments.
L The valves are connected with suitable stems, the handle portions or levers whereof
are within convenient reach outside of the filter.
Supported above the filter is a fluid distributing pipe E in the present case of
circular form, the same having connected with it a supply pipe 4 and branch
pipes 5 the latter extending radially therefrom and having pipes 6 depending thereof,
said pipes 6 passing through the top wall of the filter and opening into the filtering
chamber B.
Each branch pipe 5 is provided with two valves 7 and 8 for purposes to be
hereinafter explained.
Within the chambers (is a stand pipe F which is tightly connected with the top
and bottom walls of said chamber and in communication with said chamber by means
of pipes 9 which are secured to the stand pipe and top wall of the chamber.
The stand pipe may have an outlet at top or bottom or both as desired.
Within the chamber B, are flushing and cleansing flues or canals G which are
of triangular form in cross section so as to have peaked roofs for causing the
descending fluid to be deflected down said roof to the sides thereof, preventing
clogging of the bottoms of the flues, which bottoms being perforated are in com-
munication with the chamber B, it being noticed however that the flues are located
within the filtering material or bed of said chamber. The filtering material employed
in the chambers B is preferably gravel, sand etc. and that in the chambers C is
preferably coke in granular or crushed condition.
One end of each flue is connected with one of the partitions 1 of the chamber B and
the other end with the outer wall a of said chamber so that the flues communicate
with the atmosphere. In the partitions 1 are ports 10 as will be seen in the broken
away portions of Figures 1 and 2 and also in Figure 4, said openings being in com-
munication with the inner ends of the flues G.
The pipes are provided with valves 11 for opening and closing communication
between said pipes and the stand pipe F. At the outer ends of the flues G ure
plugs 12 which are screwed to the wall a whereby said ends may be opened and
closed.
In order to introduce steam or hot water into the chamber C when so required I
employ pipes 14 which enter said chamber, and are connected with a steam generator,
said pipes having check valves 13 at their discharge ends.
The operation is as follows:-
The valves 7 are closed and the valves 8 opened by proper rotation of the same.
The outer ends of the flues G are also closed by means of the plugs 12. The valves 3
are opened so that the chambers B Care in communication.
The valves 2 may also he opened so that several compartments D are also in
communication. Water or fluid to be filtered is admitted into the distributing pipe E.
through the supply pipe 4 and reaches the branch pipes 5 from whence it is directed
by the pipes 6 into the chamber B or compartments D thereof.

page_text: The fluid now flows downwardly through the filtering material, and passes through the
valves 2 into the secondary chamber C in which it rises and so reaches the pipes 9 by.
which it is directed into the stand pipe F and thus conveyed to the place of service.
It will be seen that the fluid is effectively filtered in its passage through the
chambers B, C, owing to the different filtering materials therein.
In order to flush or cleanse the filter, each compartment D is flushed or cleansed
separately. For this purpose I close the valves 11 of the pipes 9, open the valve 7 of
the desired compartment and close the valve 8 thereof. The water or fluid supplied, now
enters the several compartments excepting the one to be flushed or cleansed, and reaches
the latter named compartment through the bottom valves 2. The fluid reversed then
rises and so reaches the pipe 6 of said compartment, the same now serving as an exit
and discharging the impure fluid through the outer end of the branch 5.
The fluid in the several compartments also enters the flues G, through the perforated
bottoms thereof, and passes from one compartment to another, through the ports 10,
in the partitions 2. As the fluid escapes from the flue in the compartment to be
flushed or cleansed, it rises through the filtering material to the pipes 6, said material
thus being subjected to two volumes of ascending fluid, that at the bottom entering
through the valve 2 and that near the top from the flue G. By these means the
filtering material is raised and loosened, whereby the impurities may be liberated, and
said material cleansed and refreshed. The several compartiments may be successively
flushed or cleansed, as is evident..
The check valves 13 prevent the entrance of water into the steam pipes 14, the
outlet ends of which have connected with them guards 15 formed of a vessel of finely
perforated or recticulated material, whereby the filtering substance is prevented from
clogging the outlet ends of the steam pipes, and the check valves thereat.
When the plugs 12 are unscrewed, the flues or canals may be cleansed through and
through by a swab or other implement-it being evident that when the filter is being
flushed or cleansed and said plugs are removed, some of the impure fluid may be
directed from the compartments D, to the exterior of the tank, through the canals or
flues G, said impure flues leaving the filtering material and entering said canals or
flues through the open bottoms thereof, as has been stated.
Having now particularly described and ascertained the nature of my said invention
and in what manner the saine is to be performed I declare that what I claim is :-
First. A filter having a primary filtering chamber provided with partitions forming
compartments, valves at or near the lower portions of said partitions, a secondary
chamber in communication with the primary chamber, valves between said chambers,
and discharge pipes connected with the secondary chamber, substantially as described.
Second. A filter having an outer and an inner chamber, each divided into compart-
ments, valves affording communication between said comparments, a stand pipe with
pipes leading from each of said inner compartments, and a supply pipe with branch
pipes leading into each of said outer compartments, said parts being combined
substantially as described.
Third. A filter having primary and secondary chambers, a supply pipe, a distributing
pipe, a branch pipe connected with said distributing pipe and primary chamber, two
valves connected with the branch pipe, and a discharge pipe with a valve connected
with the secondary chamber, the parts named being combined substantially as
described.
Fourth. In a filter having a chamber with filtering material therein, a flue having
a peaked closed roof and perforated bottom, located in said filtering material and
connecting with a plug on the outer wall of the outer chamber, said parts being
combined substantially as described.
Fifth. A filter having a partitioned chamber, and a flue or canal within the filter
bed thereof, said flue being closed at top, perforated at bottom and open at its ends,
one end communicating with the atmosphere, through an opening in the outer wall of
the chamber, and the other end communicating with a partition of the chamber, the

page_text: opening in said wall being provided with a closing cap or plug, the parts enumerated
being combined substantially as described.
Sixth. A filter having primary and secondary chambers with means of communica-
tion between the same, a supply pipe, a distributing pipe with a branch pipe
connected with the primary chamber, two valves on the branch pipe, partitions in the
primary chamber forming compartments with the valves between the same, a discharge
pipe connected with the secondary chamber, and flues or canals within the filter bed
of the primary chamber communicating with said chamber, the partition thereof and
the atmosphere, the several parts combined substantially as described.
Seventh. The distributing pipe E, in combination with the branch pipe 5 attached
thereto, having a conveying pipe 6 leading into the filtering chamber, said branch
pipe having valves 7, 8, of different capacities, and said conveying pipe and the outlet
end d of the branch pipe being of greater diameters than the inlet end c of said branch
pipe, substantially as described.
Eighth. A filter having a filtering chamber with partitions therein, the latter having
ports affording communication between adjacent compartments, and channels leading
from said ports to the atmosphere outside of said chamber, said parts being combined
substantially as and for the purpose set forth.
Doted this 17th day of May 1880
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.