US626487A - Edmond r - Google Patents

Description

Nrrnn STATES PATENT. OFFICE.

EDMOND R. COOK AND STEVARD L COI-ICON, OF SACRAMENTO, CALIFORNIA, ASSIGNORS OF ON E-THIRD TO THOMAS SCOTT, OF SAME PLACE.

FILTER.

SPECIFICATION forming part of Letters Patent No. 626,487, dated June 6, 1899.

i Applicationfiled August 12, 1898. Serial No. 688,415. (No model.)

Figure l is a vertical section through the fil@ ter. Fig. 2 is a top view of the device for operating the brushes.

The object of our invention is to provide an automatically-self-cleaning filter and -means by which the filter is cleaned whenever water is drawn through the apparatus.

The apparatus comprises a base A, a dome B, a cylindrical outer casing C, and an inner viilterin,gf-cylinder D, which is made of any suitable porous stone or filtering medium. The base and the annular plate which extends outwardly from the base of the dome B are fitted with. suitable gaskets, upon which the ends of the outer casing C rest, and by means of rods S, with suitable nuts, these parts are drawn together, so as to `make tight joints and form a hermetically-sealed outer case. We prefer to make this outer casing C of glass, so that the interior of the apparatus can be seen and the operation inspected at any time. The base-plate is provided with an inlet-opening E,which may be connected with any source of water-supply, such as the connections behind the sink or other suitable or convenient place, and an outlet E2, at the opposite side, with a hose-bib or servicecock of any usual or desired form. The passage E extends to the center of the base-plate and thence opens upwardly in the center, as shown at E', and the interior of the upwardly-projecting boss is screw-threaded and adapted to receive the hollow cylindrical chamber F, which has curved nozzles G projecting from opposite sides, so that through these nozzles water is discharged into the interior of the apparatus.

A hollow shaft H extends upwardly from the part F, and upon this is journaled the water-Wheel casing I, which in the present `case is shown as consisting of a disk having a downwardly-turned peripheral flange, and within this iiange are the wheel-buckets I, which may be cast or otherwise formed with the disk and flan ge; and these buckets are of an odd number, so that the water passing out through the nozzles G will impinge upon the buckets and thus rotate the wheel, and by reason of the odd number of buckets there will be no dead-center and the Water Will always act from at least one of the nozzles to set the wheel in rotation.

Upon the opposite side of the base-plate from the inlet-nozzle E is the outlet-nozzle E2, and the inner end of this connects With the interior of the baseplate and within the outer casing C, so ythat water which is admitted through the inlet E passes up through the part F and out through the discharge-nozzles G, setting the wheel into motion and also iilling the outer case around the lter D and escaping through the discharge-passage E2.

The object of the rotary Wheel is to carry the cleaning-brushes J. These brushes are of bristles or anysuitable material fixed into a back J', which is here shown as beveled upon the edges and adapted to slip into an outer casing or holder J2. This allows the brushes to be removed and replaced whenever necessary.` The brushes are of a length equal to the length of a filter D, and the easings J 2 have horizontally-swiveled joints J2, which are supported upon the verticallyturnable `sleeves K, and these sleeves are turnable about vertical standards K', which project upwardly from opposite sides of the wheel-disk, so that the brushes may be pressed against the outer surface of the filter, and when the wheel isrevolved the brushes will be moved rapidly around the filter and its surface be brushed off and cleaned. Itis desirable that the brushes beheld normally out of contact with the filter and forced against it with any desired degree of pressure Whenever the wheel is set into rotation. `This is effected by connecting rocker-arms L with the rotary sleeves K, and the endsof these rocker-arms are connected by loosely-jointed IOO . Springs N are connected with the rocker-arms L and with suitable attachments upon the sides of the cylinder M, and the tension of these springs will normally press the plungers in toward the center of the cylinder, and thus rotating the sleeves upon the standards will move the brushes away from the surface of the filter.

Whenever water is admitted through the inlet E, it passes up and is-discharged through the pipes G to set the wheel in rotation, as previously described, and also passes up through the hollow shaft H, which has peri forations h made -in it, and these perforations open into the central and slightly-enlarged portion of the horizontal ycylinder M', so that pressure is at once applied to the plungers M, and they are forced outwardly at the instant when the wheel commences to rotate. TheA plungers thus forced outwardly act through their connecting rods upon the rocker-arms .L, and rotating the sleeves K will force the brushes into contact with the filter-surface, and as long as the rotation of the wheel continues they will act to brush the surface of the filter.y The outlet E2 being still open, the interior of the chamber between the filter and the outer casing may be thoroughly washed and cleansed before the outlet is closed, and after it has been closed the water will fill the chamber between the outer casing and the filter whenever the airvent O is opened to allow the escape of the air from the upper part of the filter-chamber. This air-vent may be of any suitable description. We have here shown it as a simple connecting-pipe with a cock which is opened at the proper time and allows the air to escape and the chamber to fill up with water.

The air-cock is then closed, and the pressure of water from the inlet acts to force the water through the material of the filter to the interior, and the filtered water is delivered from the interior by means of an outlet-pipe P, which is here shown as connected with the I ltop of the dome B.

In order to conveniently obtain access to the interior of the filter, we have shown the upper end abutting against the iiat disk which forms the basevof the dome with a suitable water-tight gasket between the two.

-The lower end of the filter has an annular metal cap D fitted to it with a similar gasket, and a screw-rod d extends through the center of the filter from the bottom cap and-screws into the lower end of a discharge-tube p, which connects with the outlet P of the filter. This tube has perforations made in it to admit the filtered water from the interior of the dome,

l soy that it can escape through the outlet P.

The plungers M, which operate to move the brushes, are preferably made in the form of short cylinders of less diameter than the interior of the cylinder M and having flanges Vorbase of the ilter.

at each 'end which fit loosely within the cylinder M', presenting a sufficient surface so that the outward pressure of the water will act upon them and force the brushes against the filter; but the tit is loose enough so that any grit or dirt contained in the water will be allowed to escape and will not clog up the cylinders or plungers.

The pressure within the water-mains often varies to a considerable extent, and in lorder to regulate the pressure upon the plungers and the resultant pressure of the brushes upon the filter We have shown an adjustingvalve R, the stem of which is screw-threaded and extends up centrally through the bottom The valve may be of any suitable form; but we have here shown it as a conical one and fitting into the opening at the bottom of the tubular bearing H, upon-which the wheel revolves. This valvestem has a turning-wheel at the lower end by which it may be advanced or retracted, and the passage of the water into the hollow journal-shaft `I-I is thus controlled and the pressure upon the pistons M is regulated to suit the pressure in the mains. By this construction we are enabled to provide a ilter which is automatically cleaned whenever the faucet is opened to draw water for ordinary purposes, and when this faucet is closed the pressure within the filter-chamber will force the water through the porous filtering-cylinder and supply filtered water from the discharge-pipe thereof.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

l. A filter comprising an inner hollow filtering-cylinder with a discharge-opening, an outer casing with supply-passages to admit the water to be filtered between itself and the filter, brushes adapted to contact with the surface of the filter and having swiveled arms whereby they adjust themselves to the surface of `the cylinder upon moving about the latter, mechanism by which the brushes are moved around the filter whenever the discharge-faucet is opened.

2. A filter comprising an exterior case, an interior hollow filtering-cylinder, supply and discharge Qpenin gs connecting with the space between the outer case and the inner lterchamber, a hollow chamber connecting with the supply-passage and having projecting nozzles discharging outwardly, a water-wheel centrally journaled so that its buckets are in line with the discharge-nozzles whereby the wheel is caused to rotate when the dischargefaucet is opened, standards extending upwardly from the periphery of the wheel and brushes carried by said standards and adapted to press upon the surface of the filter when the wheel is rotated.

discharge openings connecting with the space IOO IIO

between the two, a central passage having' discharge-nozzles, a centrally-journaled wheel, the buckets ot' which are in line with thedischarge-nozzles whereby the Wheel is rotated when the discharge-faucet is opened, vertical standards carried upon the periphery ot` the wheel, brushes adapted to contact with the surface of the cylinder and having centrallydisposed swivel-arms whereby the brushes adjust themselves to the surface of the filter upon moving about it.

4. A filter consisting of an outer easing, an inner hollow lter-chamber, passages through which water is admitted to and discharged from the space between the two, nozzles connectinf,r with the supply-passage, a centrallyjournaled wheel, the buckets of which are in line with the nozzles whereby the wheel is rotatcd when water is drawn through theappw ratus, vertical standards extending upwardly from the periphery of the wheel, sleeves turnable loosely upon said standards, brushes nadapted to contact with the surface of the tilter, centrally-swiveled arms by which the brushes are connected with the sleeves and a mechanism whereby the sleeves are turned so as to move the brushes into contact with the filter while in rotation.

5. In a filter of the character described, a wheel which is rotated when water is drawn through the apparatus,vertical standards carried upon the wheel, sleeves turnable about said standards, brushes extending 1ongitudinally and adapted to contact with the surface of the filter, swiveled arms by which the brushes are connected with the sleeves, a cylinder with plungers movable therein, rockerarlns connected with the brush carrying sleeves, and connections between said arms and the plungers whereby the pressure of Water upon the plungers acts to rotate the sleeves -and force the brushes into Contact with the swivel connections turnable upon the standards whereby vthe brushes arermoved to or from the surface of the ilter, a transverse cylinderhaving the central portion connected with the water-supply', plun gers movable outwardly within the cylinder, rocker-arms connecting with the sleeves carrying the brushes, whereby the pressure of water upon the plungers acts to force the brushes into contact with the iilter, and springs acting to return the plungers and the rocker-arms and move the brushes out of contact with the filter when the Watenpressure is cut off.

7. A filter having an exterior casing and inner filtering-cylinder, a centrally-journaled rotary wheel, brushes carried thereby and adapted to press upon the surface of the tilter while in rotation, a transverse cylinder with plungers movable therein, a central passage through which water is admitted to the cylinder When the cock is opened whereby ,the plungers are moved outwardly, connections between the plungers and the brushes whereby the movement ofthe plunger acts to force the brushes into contact with the filter and a valve controlling the inlet-passage to the cylinder whereby the pressure maybe regulated.

In Witness whereof we have hereunto set our hands.

EDMOND R. COOK.

STEWART) L. COHOON. Witnesses:

S. II. NoURsE, Jnssin C. Bnonrn.-

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