US623324A - Filter - Google Patents

Description

No. 623,324. Patented Apr. l8, I899. M. LEVI.

FILTER.

(Application filed Apr. 26, 1898.)

3 Shaets$hoet I.

(No Model.)

m: sokms PETERS co. PNOTO-LITHO,WASM1NGTON, a c.

No. 623,324. Patented Apr. l8, I899, u. LEVI.

FILTER.

(Application filed Apr. 26, 1898.)

(No Model.) 3 Sheets-Sheet 2.

m; ncxms PETERS co. Moro-urns WASHINGTON. o. c.

No. 623,324.- Patented Apr. I8, I899. M. LEVI.

FILTER.

(Application filed Apr. 26, 1898.)

(No Model.) 3 Sheets-Shaet 3.

lh'" IIIIHIII I" lllllllll Ill ilrtrrn STATES PATENT Orrrcn.

MORDIGAI LEVI, OF CHARLESTON, VEST VIRGINIA.

FILTER.

SPECIFICATION forming part of Letters Patent No. 623,324, dated April 18, 1899.

Application filed April 26, 1898- Serial No- 678.8'73- (No model.)

'1 '0 all LII/tom it may concern:

Beit k nown that I, MORDICAI LEVI, a citizen of the United States, residing at Charleston,

county of Kanawha, State of'West Virginia, have invented certain new and useful Improvements in Filters, of which the following is a specification.

My invention relates to filters, and is designed for filters of large size to be used in connection with the supply of water for cities and towns, though not necessarily limitedin point of dimensions.

My invention is illustrated in the accompanying drawings, in which Figure 1 represents the apparatus partly in side elevation and partly in section. Fig. 2 shows a partial longitudinal section of the filter-chambers detached. Fig. 3 is a section on line 2 2, and Fig. 4 a section on line 3 3 of Fig. 2. Fi 5 is a cross-section of Fi 2 with a I D r b parts omitted. Figs. 6 and '7 show details of construction.

In the drawings, A represents a filteringtank, the shell of which is made of any suitable material, such as boiler-iron, and any dimension suitable for the work for which it is designed. It is provided at any convenient point in the upper partwith a supply-pipe, as R, and with the manhole r. The upper part is formed without partitions and affords a clear space for sand or any other suitable filtering material. In the bottom of this tank is arranged a series of special filters, through which the water'is compelled to pass in order to find its way through the eXit-pipe 19. These filters are held in radially-arranged cages which open to the outside and which extend from the shell horizontally toward the center of the tank. In Fig. 3 one of these cages is shown atl, while others of the series are shown at 2, 3, and 4-, and it will be under-' stood that they extend in similar manner around the whole periphery of the cylindrical tank. One only of these cages need be described, as all are of the same construction. Reference is had for the one described in the partial section in Fig. 2 and to the details in the other figures showing this part. The cage is shown at E. It consists of a casting formed with transverse bars 6 and intermediate open spaces 6 across the upper part and with longitudinal water-spaces f in the lower part.

as there is no opening for the egress of the water excepting through the spaces between the upper bars the pressure within the tank forces the water through these spaces and through the filtering material in the case and through the spaces below into the channelsf, whence it escapes through a pipe binto a central chamber M, thence down a central passage N to a separator O, and thence to the discharge-pipe p. The case which holds the filtering material within the cage is preferably made of copper thickly perforated to admit transverse passage of the water,and it is made tapering to fit in the cage.

The cage is preferably threaded upon its inner end and held upon the wall by threaded connection with an annular flange 0. On

the outside is another annular flange B, in which is inserted a screw-plug D, adapted to close the opening. The opening in the flange B is sufficient to admit the case, and it may therefore be withdrawn for cleansing or renewing the filtering material. I have provided longitudinal grooves g on each side of the inner face of the cage, and into these flanges h on the outside of the case are fitted when the case is in place, thus supporting the case equally in the cage, and movable plugs (Z may be used to hold these in place.

For the purpose of keeping clear the perforations in the shell of the case I have provided a central rod is, which is fitted through a stuffing-box Z and through the cap D and passes axially through the extent of the case, carrying a spirally-coiledrod or bar throughout its whole extent, this spiral coil bearing against the innersurface of the case. Means are provided whereby the rod may be caused to revolve with the coil, whereby the inner face of the case is rubbed to keep open the perforation through the shell of'the case.

A stirring mechanism is provided in the upper part of the tank, which consists of a vertically-movable rod m, passing through a stuffing-box in the center of the top and having suitable means for turning and moving it. It is provided with horizontal arms 7'11, radially arranged and adapted to be turned with the rod at any point-of elevation, and thus to prevent the filtering material from becoming compacted.

I claimy l. A filtering-tank having a series of radiating filter-cases supported Within said tank, a centrally-arranged discharge-pipe and connections from the filter-cases thereto, substantially as described.

2. A filtering-tank having a series of radiating filter-cases, supported in the said tank,

. and removable outwardly through the wall of the tank, and a common discharge-passage for said cases, substantially as described.

A filtering-tank having a series of radiating cages supported within said tank, a central space in said cages for holding filtering 5. A series of cages arranged radially in a filtering-tank, having openings on one side to the interior which contains filtering material, and also openings which lead from the interior to passages in said cages, in combination with passages leading from the series to a common discharge,substantially as described.

6. In combination with the tank, a series of cages fixed to flanges on the walls and con nected to a common discharge, openings in the wall of the tank leading to the interior of the cages, cases for filtering material, fitted to the interior of said cages, removable through said openings, and means for closing said openings, substantially as described.

7. In combination with the cage and case, a central rod carrying a spiral cleansing device, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

. MORDICAI LEVI. Witnesses:

C. H. HATCHER, STEPHEN SHANAHAN.

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