US791647A - Filtering system. - Google Patents

Description

PATBNTED JiJN e 1905;

'- V D. M. PFAUTZ. PILTERING SYSTEM. APPLIOATION FILED JULY 2. 1904.

4 SHEETS-SHEET 1.

(thorn vei s PATENTED JUNE 6;, 1905.

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D. M. FAUTZ PILTBRIN G SYSTEM.

APPLICATION FILED JULY '2. 1904 4 SHEETS-SHBET 3- PATENIED JUNE 6, 1905.

D1 M. PFAUTZ.' FILTERING SYSTEM. APPLIQATION FILED JULY 2. 1904 N6.791,647. PATENT ED'JUNEB, 1905.

1). M. PFAUTZV FILTERING SYSTEM.

.' APiLIdA-TION II ILED JULY 2, 1904.

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Y all nection it relates to the construction and ar-.

- UNITED STATES Patented June 6, 1905.

PATENT OFFICE.

FILTERIYIIVG S YSTEM.

SPECIFICATION forming part of Letters Patent No. 791,647, dated June 6, 1905.

, Application filed July 2, 190.4. SerialNo. 215,066.

To all whom, it may concern:

Be it known thatI, DANIEL MJPFAUTZ, a

citizen of the United States, residing .at Germantown, .in the county of Philadelphia and State of Pennsylvania, have invented certain rangement of such afilter.

The nature and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, 4

in which Figure 1 1s a horizontal sectional view of a filtering apparatus embodying main features of my present invention. Fig. 2 is an enlarged vertical sectional view. Fig. 3 is an enlarged cross-sectional view taken on the line 4 4: of Fig. 1. Fig. 4 is a top or plan view of the lid or closure for the filter-compartments and of the locking mechanism therefor. Fig. 5 is an enlarged detail view of the lockinglevers of Fig. 4; and Fig. 6 is a top or plan view, on a smaller scale, of the filtering apparatus.

Referring to the drawings, or represents the main water-distributing pipe, leading from a reservoir or other source of supply. (Not shown.) This pipe a branches, as at a, and enters two Water-tight casings I) and 6. These casings Z2 and b constitute, respectively, the inclosure for separate filter apparatus, which, so far as arrangement and construction are concerned, are duplicates. In a casing 12 or I) are arranged a series of vertical filter-beds 0). Each bed 0Z consists of a box having front and rear faces of netting d and filled with filtering material held down in the box by a heavy plate W. The beds 0? are removable verti cally from the casing and slide upon ribs 6 arranged on the sides of the casing. (See Fig. 1.) The sides of the box forming the bed are channeled, as at d to closely fit the ribs IF, and thus afford a liquid-tight joint between the casing and the sides of the bed at.

joint.

Each box constituting the receptacle for the filtering material is provided with a lid (if, arranged to. be bolted or otherwise secured down upon the casing and'to be removed therefrom. Any form or means for fastening this lid d down upon the casing and the filter-box may he used. The preferred form, however," is illustrated somewhat in detail in Figs. L and 5. This preferred form consists, essentially, of a screw-bolt e, traversing the lid d and havingiaheaded lower end resting upon the under surface of the lid. The bolt passes -through a collar e, which may be turned upon the bolt e to advance or retract the collar. On the collar a loosely turns a sleeve 0 to which is pivoted a series of locking-arms 6 These arms 6 pass through brackets a, projecting from the'top of the lid 0?, and through keeper-plates 6, connected with the casing t or I). These arms are adapted when the sleeve 0 is turned by the handle 0 in one direction to be projected outward to engage the said keeper-plates e. When turned in an opposite direction. the sleeve 0 retracts the arms 6 and draws the same out of the keeper-plates 0 When thearms a are in the keeper-plates e and the col- 'lar is turned by its handle 0 to be advanced 8 5 upon the bolt e toward the lid 01', then the inner ends of the arms'e are depressed and the outer ends raised against the keeper-plates e to force the lid cl down upon the box or bed 0? and onto the casing 7) or b by means of the brackets a, so as to render a filter-bed d Water-tight at its upper end and also to prevent the escape of water between the casing b or 6 and the lid OZ, as clearly illustrated in Fig. 20f thedrawings. i The beds cl are arranged vertically in each of the filters B and B. If the valves B B 13*, and B arranged in the branch pipes a'- and a, are opened, the water coming from the main a must pass under pressure into a cham- I her f of each of the filters B and B, in front of the first bed and under pressure through said bed into a succeeding chamber f, in front of the second bed (Z, and so on untilthe chamber f in each filter is reached, from which the same by means of the branch pipes a flows into a pipe for distribution. Thus in the instance shown where three filter-beds are used four chambers f are required, the first chamber being in front of the first bed and the last chamber f being to the rear of the last bed to constitute a reservoir for the purified water. The reservoir f communicates by the pipe a with the continuation e of the main or, as clearly illustrated in Figs. 1 and 6. The entire filtering apparatus is hence interposed directly in a main or water-distributing pipe and can be cut into or out of the main,

as required, by means of thesystem of valves illustrated in Figs. 1 or 6. Thus in Fig. 1 provision is'made for euttingeither of two adjacent filters BB into or out of the main. In this instance if the lower filter B is to be cutout then a gate-valve B on the branch pipe at is shut and a similar valve B on the pipe a is closed. The water from the main a then passes only through the. filter B. If the filter B is to be cut out and thefilter B only is to be used, then the valves B B are opened and similar valves B B are closed. In Fig. 6, however, provision is also made for cutting both filters'B and B outof the main. In this instance the main a is connected directly by a pipe at with its continuation a and upon the pipe (0 is arranged a valve a which is closed when either or both filters B and B are in operation and isropened when both of said filters B B are cut out of the main.

When the beds of either filter B or B are .to be cleansed, the filter is cut out, as before described, and the bed or bedsdremoved from the apparatus. When the filters B and B are to be flushed, then a system D of drainagepipes from the bottom of the chambers f f" is opened and the valve B or B on the branch pipe (6 is closed. In this instance the beds d are removed from the casing prior to flushing. In front of each bed cl and at the base of the screen d is arranged a tubular catch-pan g, having a slot or opening g at its top adjacent to the bottom of the screen d. this tubular pan g is connected with the drainage-pipes D. As impurities gather on the screen cl they fall into the pan 9. To flush these pans 9, water is diverted from a compartment or chamberf through the pan g and into the drainage-pipes D.

The weighted plates d on the filtering material in the boxes (Z permit of the increase or decrease in bulk of the material within the boxes without impairing the efficiency of the material. The plates 0Z also prevent the fil- One end of ter material from being agitated by passage of water under pressure through thematerial.

Having thus described the nature and object of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In afiltering apparatus,acasing, a wedgeshaped rib at the bottom of said casing, a filter-bed disposed in and removable from said casing and having its bottom indented to form a wedge-shaped groove adapted to fit the rib at the bottom of said casing.

2. In a filtering apparatus, a casing, flat ribs arranged on either side of the casing,a wedgeshaped rib arranged on the base of the casing, and a filter-bed having its sides and bottom indented complementally to the shape of the side and bottom ribs of the casing, said bed arranged vertically in the casing and resting upon the bottom rib of said casing.

3. In a filtering apparatus, a casing interposed in a water-distributing pipe or main, a series of vertically-disposed filter-beds removably arranged in said casing, means for forcing water under pressure through said filterbeds, a tubular catch-pan arranged at the base of the front face of each filter-bed, and means for flushing said catch-pans.

4. In a filtering apparatus, a filter-bed, a tubular catch-pan secured to thebase of the frontface of said bed, said pan having a pcripheral opening adjacent to the face of said bed and an open end, and a drainage-pipe con "nected with the open end of said catch-pan.

5. In a filtering apparatus, a casing interposed in a water-distributing.pipe or main, a series of vertically disposed filter-beds removably arranged in said casing, each of said filter-beds having in its sides flat indentations and at its bottom a wedge-shaped indentation, flat and wedge-shaped ribs arranged respectively at the sides and bottom of said casing adapted to engage the indentations in said filter-beds, and means for forcing water under pressure through said filter-beds.

6. In a filtering apparatus, a casing interposed in a water-distributing pipe or main, a

ing witnesses.

DANIEL M. PFAUTZ. Witnesses:

- J. WALTER DOUGLASS,

THOMAS M. SMITH.

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