US434666A - Water-purifying apparatus - Google Patents

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W d. d o M 0 m No. 434,666. Patented Aug. 19, 1890.

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OMAR H. JEVVELL AND VILLIAM M. JEVVELL, OF CHICAGO, ILLINOIS.

'WATER-P-URIFYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 434,666, dated. August 19, 1890.

Application filed March 21, 1890.

To all whom it may concern.-

Be it known that we, OMAR H. JEWELL and WILLIAM M. JEWELL, citizens of the United. States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented cert-ain new and useful Improvements in Water-Purifying Apparatus, of which the following is a specification, reference being had therein to the accompanying drawings.

This our invention relates to apparatus for purifying water, and more particularly to the class of such apparatus generally known as gravity-filters, and it has for its object to provide such a filter with a self-regulating feed from the pump by means of valves operated by oats, to arrange the same with an exterior endless trough with waste-pipe and` valves for the wash-out water to be discharged; also with a vertically-reciprocating agitator for the filtering material during suoli washout, and, finally, with a chemical-tank so connected with the suction and feed pipe of the pump that a certain amount of water will be fed into the lower strata of chemicals to rise through the same, and that the Asolution is drawn from above such chemicals into the suction-pipe for thoroughly intermingling with the water before entering the filteringtank; and with these objects in view our invention consists of the novel devices and combinations of devices hereinafter described and specifically claimed.

In the accompanying drawings, Figure l represents a sectional elevation of the entire apparatus, and Figs. 2 and 3 a detail view and section of the valves for the chemicaltank.

Corresponding letters of reference in the several figures of the drawings designate like parts.

A denotes the filtering-tank that is open on top, and B is the pump having suction-pipe C and discharge-pipe D, the latter being connected with pipe d, that communicates in the center of the top of the tank with a chamberhead E, having a series of outlets each' controlled by a swinging stop-valve F, having an arm with a float f to close such outlets whenever the water in the tank A reaches a certain level. Pipe dis provided with a stopvalve G for regulating or shutting od the feed toward chamber-head E. Through avalve H Serial No. 344,766. (No model.)

the pipe D also communicates with a pipe I, having valves .I and K, the valve J providing communication with a pipe j,that leads to the sewer. The pipe I, by means of an elbow and branch extended through the center of the bottom of tank A, also communicates with a chamber-head L, located near the bottom in such tank and having connected a series of radial pipes M, each reaching to near the side wall of the tank A, where it is closed by a cap, and each having attached a series of strainer-cups m, coveredwith wire screening. The pipe from head L will conduct the filtered water to the pure-water reservoir. Exteriorly around the filtering-tank A is fixed an endless trough N, communicating with a waste-pipe n, that also leads into the sewer, and a series of openings are cut through the side walls of such tank, each having an interior valve-seat o, that will be closed by a swinging valve O, pivoted to a fulcrum-bracket p, and provided with a slotted arm engaging the collared end of a screwstem P, tapped through a stuffing-box secured against the outside wall of tank A, such screwstem P having mounted upon it a hand-wheel for rotating such screw-stem P in one direction or another for opening` or closing such valves.

Above the filtering material is secured iu tank A a diametrical beam Q, through the center of which and through a guide-piece q secured thereon is passeda vertical bar R, guided therein and reaching to near chamber L, which bar has secured to it a series of radial arms s, that extend to near the side walls of tank A, and on top of this beam Q is iixed a standard-bearing g for a bellcrank S, one arm of which is pivotally connected with the upper eyed end of barR and its other arm by a rod t connecting with a lever T, pivoted in a bracket secured against the wall-of the tank A, the rod t being projected through a stutting-boX also secured to tank A. A swinging of lever T will vertically reciprocate bar R and the radial arms s secured thereto for agitating the filtering material Whenever desirable.

The tank U is to contain either soda, lime, or alum, a solution of which is to be intermixed with the water to be filtered for precipitating carbonate of lime or other matter contained therein, and into this tank is fed IOO water in proper quantities from the dischargepipe D of pump B through a branch pipe u from pipeD extended over the top of tankU and thence to near the bottom thereof, where a check-valve o is coupled therewith that will prevent the chemicals from entering and clogging such pipe, and this pipe u is also provided with a valve w automatically opened or closed by a float :r to allow the filling of such tank only up to a certain level. From near the top of such tank a pipe g/ connects with the snction-pipe C of pump B, which pipe y is provided with a valve z, regulating the proportional amount of the chemical solution to be intermixed with the water to be filtered. By this device the concentrated solution will rise to the top, leaving all impurities that may be contained in the chemicals to remain in the bottom of tank U.

The modus operandi of the apparatusis as follows, to wit: The pumpB working with a pressure about equal to draw and lift the water over the top of tank A, so that the speed of the pump will be automatically regulated by valves F, controlled by iioats f, and when tank A is filled with water to nearly its top the gravity of the head of water above the filtering material will accelerate the filtering process. The water thus fed to the tank will have added a small percentage of chemical solution drawn from t-ank U, which solution will thoroughly inter-mix with the water while passing through pump B.

For filtering, the valves G and K are opened `and the valves H, J, and O are closed, when the water, after trickling through the filtering material, will enter strainer-cups m, and from pipes M will collect in chamber-head L, and thence will pass off toward the purewater reservoir through pipe I. For washing out the impurities from the Water thus filtered collecting in and upon the filtering material, the valve G is closed and the water contained in the tank is allowed to filter until empty, or nearly so, then the valve K is closed and the valves Il and O are opened, when the water from the pump will be forced through pipe I into chamber-head L, and thence through branch pipes M and the Strainer-cups m, passing upward through the filtering material and thence escaping through the valve-seats o in to trough N, escaping from there int-o the sewer through pipe n, and carrying with it all impurities, and for the purpose of facilitating and making more thorough the wash-out the operator during such wash-out, will swing the lever l to and fro for vertically reciprocating the bar H with its arms s, thereby agitating the filtering material, loosening and separating therefrom all impurities that had been settled therein. After thus having washed out the tank by a counter-current with, commencing to filter closed and the valve K is opened again. Vith the placing of the wash-out-water trough N eXteriorly of the tank-walls, any sediment therein of foul matter' can have no putrescent effect upon the Water to be filtered, as may sometimes be where such trough is placed interiorly ofthe filtering-tank, and besides such trough is in lready reach for cleaning as often as required, and for agitating the filtering material vertical reciprocating horizontal bars Working more like a ohurn-dasher will accomplish the object more thoroughly than bars rotated or oscillated.

l. The combination, with gravitating filtering-tank A, of a trough N, placed exteriorly thereof, openings through the wall of the tank leading into such trough and each provided with a valve O, arranged to be operated from the outside, and pipe n for discharging the contents of the trough N, all substantially as set forth.

2. The combination, with a filtering-tank, of vertically-reciprocating bar R, guided in a cross-beam and provided with horizontal arms within the filtering material, and bellerank S, bar t, projected through a stuffing lbox in the side wall of the tank, and lever 'l for operating such bar R, substantially as set forth, for the purpose specified.

In testimony whereof we afhx our signatures in presence of two witnesses.

OMAR H. J ElVELL. lVILLIAM M. JEVELL.

Witnesses:

WILLIAM H. LoTz, OTTO LUEBKERT.

lOO

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