US552041A - Filter - Google Patents

Description

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Patented Deo. 24, 1895.

'wffz W. H. COX.

FILTER.

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(No Model.)

W/TNESSES.'

UNITED STATES i PATENT OEEICE.

TILLIAM H. COX, OF CYNTHIANA, KENTUCKY.

FILTER.

SPECIFICATION forming part of Letters Patent No. 552,041, dated December 24, 1895.

Application led April 2, 1895. Serial No. 544,161. (No model.)

To @ZZ whom it nay concern.-

Beit known that I, VILLIAM H. COX, of Oynthiana, in the county of Harrison and State of Kentucky, have invented a new and Improved Filter, of which the following is a specification.

My invention is an improvement in the class of cistern-fllters having an automatic valve attachment for regulating the course of liow and discharge of water.

The construction, arrangement, and operation of parts are as hereinafter described, and illustrated in accompanying drawings, in which- Figure l is a central vertical section of my improved filter, and Fig. 2 is a cross-section of the same on line 2 2 of Fig. l. Fig. 3 is a sectional view showing a modification.

The body or casing of the filter is cylindrical in form, and preferably Iconstructed of sheet metal. Within the casing are arranged three parallel vertical tubes A B C, the tube A being the inlet and projecting through the top of the casing, the tube C being the outlet and projecting through the bottom of said casing, while the tube B is arranged between the others A C and provided with a transverse partition or diaphragm b, so that it may serve as a conductor for both unfiltered and partly-filtered water, as will be further eX- plained. The portion of such conductor B above said diaphragm b is connected with the inlet-tube A by a transverse tube D, and the portion below such diaphragm is connected with the outlet-tube C by a similar tube E. It will be apparent that water entering tube A may pass through D into the upper portion of conductor B and, passing over the top of the same, descend to the bottom of the casing, thence ascend in the lower part of conductor B through the transverse tube E into the outlet C. In this course the water is strained and filtered, as will be now explained.

A portion ofthe inlet-tube A above the connecting-tube D consists of a cylindrical wire-gauze strainer F, which is soldered to the other imperforate sections of said tube. The operation of this strainer will be further referred to hereinafter. The lower portion of thefllter-casing is occupied mainly by a ltering material, such as pulverized chara coal X, and the lower portion of the outlettube C is also filled with the same, as shown. This material Xis supported upon horizontal wire screens G and H. The larger screen G is arranged a few inches above the bottom of the casing and the central conductor B projects through it. The casing` is provided with a false or second bottom I, vwhich is made concave, ,as shown, to allow drainage to the center, where there is an opening provided with a conical bushing J that serves as a seat for a conical valve K. The latter is fixed on a slidable rod L, which projects through the diaphragm b of conductor B and carries a float M formed of wood or some other material which is lighter than water. A wire screen or diaphragm d is arranged in the tube D for the purpose of preventing leaves, twigs, straw, &c. from entering the body of the iilter.

It will be seen that water entering and lling A D B above the diaphragm b will raise the float M to the position shown by dotted lines, Fig. l, and thereby seat the valve K so that the outlet J is closed at that point. Then the water overliowin g from the upper mouth' of conductor B (see dotted arrows) will percolate the body of charcoal X and enter the space or chamber between the screen G and false bottom I, whence it passes up through the lower portion of the same conductor B and through lateral tube E down through the filtering material X in outlet-tube O, whence it escapes into a cistern or other receptacle. (Not shown.) In this operation the water is strained, then filtered, and refiltered. As a means for further filtration than is provided for by the charcoal X, I propose to employ a sponge Y, which is placed in outlet-tube C upon the body of charcoal X therein. The charcoal may be inserted and removed through the top of the casing, which is provided with a hinged lid or cover N, and the sponge Y may be inserted and removed for cleaning it by opening such cover N and the cover O of tube C, as will be readily understood.

When the flow of water into the lter ceases the siphonic action of the outlet-tube C will draw the water-level in the body of the iilter down to a line parallel with the lower side of connecting-tube E, and the water in inlet- IOO tube A and its connections D B will be drawn off by reason of the escape provided by openings cv and d in tubes A D. These openings allow passage into the body of charcoal, as

shown.

When the water is drawn off from tubes A D B, there being no support for the float M, it falls and opens valve K, so that all the water remaining in the charcoal and chamber below it is drawn off. Thus no water remains in the lter to become stagnant in the warmer season or frozen in the colder one.

The course of the water when there is a large quantity received into the iilter is indicated by dotted arrows, and the course of water escaping afterward is shown by full lines.

In case water enters tube A faster than it can pass through the iilter proper, it will overiiow through screen F into the body of the easing, being strained in such passage so that leaves, sticks, twigs, straw, dac., will be retained in tube A.

The lower or pocket end of inlet-tiibe A projects laterally through the side of the casing and is provided with a tightly-fitting cap l to provide for oonveiiient removal of mud or other sediment that may collect in the pocket and also of such materials as have been strained out by the screen d.

Referring to Fig. 3, it is apparent if the conductor B should be placed near the side of the casing a lever connection maybe made, as at Q, between the float rod and valve, so that the latter will close and open, as in the preferred arrangement before described.

What I claim isl. The combination, with a iilter casing, having an opening in its lower end, and filtering material held therein, of an inlet tube, outlet tube, an intermediate conductor, and lateral tubular connections between .them as specified, of avalve attachment consisting of a float, rod, and valve proper, arranged to operate substantially as shown and described.

2. The combination, with the lter having an opening in its lower end, three vertical tubes; to-wit, the inlet, outlet, and intermediate conductor, and lateral tubular connections, tlie said conductor having a transverse diaphragm arranged between the lateral connections, a iioat and valve attachment for regula ting the course and discharge of water through and from the filter, and a ltering material arranged in the body of the filter and in the outlet tube, as shown and described.v

3. The combination, with the easing having an outlet in its lower end, three vertical tubes, and lateral tubular connections therefor, a transverse diaphragm in the central tube, a float arranged above the diaphragm, the iioatcarrying rod sliding through the latter, a valve on the lower end of said rod, a body of filtering material and screen supporting it above the bottom of the filter, and another body of iiltering material supported upon a screen in the outlet tube, all as shown and described, to operate as specified.

4. The combination, with the casing, having an opening in its lower end, of three parallel tubes, and tubular lateral connections between them, a float and valve attachment for opening or closing the aforesaid opening, filtering material arranged as specified, a transverse diaphragm in the central tube Or conductor, which is arranged between said lateral connections, and an opening or water-escape in the lower side of the connection between the inlet tube and such central conductor, as and for the purpose speciiied.

WILLIAM H. COX. lVitnesses F. M. COX, C. ll. COX.

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