US122291A - Improvement in filters - Google Patents

Description

. TAFT Improved Filter.

Patented-Dems,1871."

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HORATIO N. TAFT, OF SAG HARBOR, NEW YORK.

'IMPROVEMENT IN FILTERS.

Specilication forming part ot Letters Patent No. 122,291, dated December 26, 1871.

Specication describing a certain Improvement in Filters, invented by HORATIO N. TAFT, of Sag Harbor, in the county of Suii'olk and State of New York.

The object of this invention is to furnisha new and improved filter for water and other fluidsa filter which may readily be reversed for cleaning or used without reversing; and it consists in the construction, arrangement, and combination of parts hereinafter set forth and described.

In the accompanying drawing, Figure l represents a vertical central section of my improved iilter. Fig. 2 is a horizontal section taken on the line x x of Fig. l. Y v

Similar letters of reference indicate corresponding parts.

A is an outer cylinder or shell, of any desired shape, dimensions, or material, provided with a head, B, at each end, the heads being so attached to the shell that they make water-tight joints therewith. In cach head is a tube, C, having therein a stopcockD. E is an inner cylinder or vessel, of one-third (more or less) the diameter ofthe shell A, and of corresponding or other shape, which has two or more perforated partitions, F F, therein. G G are two perforated diaphragms or false heads. Upon one of the sides of each 'is a iiange, H, by which the interior cylinder E is kept in a central position in the shell. The linterior cylinder or part E is supported longitudinally by the perforated false heads Gr G.

On the `opposite or outer side of each of these false heads there is a rim-ange, I, which is designed to reach the outer heads B B, as seen in the drawing, so that the interior part E, while resting on the lower false head, will really 4be supported by the lower head B, instead of the iange I. Any other device may be employed to support thel false heads; but the arrangements should be such that the false heads Vor either of them can be readily taken out or putin. J J are valves of sufficient .diameter to cover the ends of the interior cylinder or part E. These valves may be hinged to the false heads, as seen in the drawing, or made to close down so as. to cover the end and exclude water from the upper end of E when the lter is in operation. The lower valve will drop by its own gravity and allow the water or other liquid to pass upward, as indicated. K K are chambers inthe ends of the ilter, in which these valves work. These chamthe description already givenof the interior of.

the filter it will be seen that the cylinder E is divided into three compartments or chambers, {ghe center of which, M, is the pure-water chamer. material, as sponge, sand, charcoal, or other substance. The annular chamber P is also illed with gravel, sand, charcoal, or other filtering material. R R are discharge-pipes connecting with the pure-water chamber M, to whichthe discharge-cocks S S are attached, arranged so 'that when the tlter is reversed for cleaning the point of discharge will not be altered.

Whenwater is flowing into the tilter the contained iiltering material may bepartially cleansed by opening the lower cock D and allowing the liquid to tlow directly through. Ordinary iilters can be cleansed in lio other way except by removing the filtering material. By reversing or turning the iilter e'nd for end the impurities which have accumulated upon the top of the filtering material are at once discharged, when the lower cock D is opened and the cleansing is complete. To facilitate the reversing of the filter I provide the outer cylinder or shell A with central trunnions T T, so that the filter may be supported thereby on a suitably-constructed frame or stand, and easily reversed thereon upon disconnecting the water-pipe or removing the tank L.

The perforated `false heads G G, as well as the perforated partitions F F, are made of cast metal or other material ot'suitable strength, and may be covered on one or both sides with tin, wire-gauze, iiannel, or other suitable straining material.

By removing the dischargecocks S S and one of the headsB the entire contents of the shellA may be taken out.

I do not limit or confine myself to the precise r form or arrangement of any of the parts herein described, as they may bevariedin many ways The other. two, N and O, contain iltering do I confine myself to a reversible filter, as my improved filter may be usedl as ordinary iilters are, if desired. Instead of making the shell A with iianges and connecting the heads B B thereto by bolts, as seen in the drawing, the heads of the filter may be held to the shell by a single central bolt or screw-rod, or by two or more screw-bolts or rods. In the former case the tubes C C would be placed one side of the center and the valve J Would slide up and down on the bolt instead of being hinged to the false head. 'The valves J J may be opened and closed from the outside by means of screws or other device in-V stead of opening'and closing' by their Weight; but I prefer thearrangement described.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A reversible filter having valves J, bymeans of which the flow of the water or other liquid is automatically controlled, substantially as described.

2. The chambers K K, or .their equivalent, in

combination with tubes C C and valves .I J, substantially as and for the purposes described.

3. The interior cylinder or part E, withperfo poses described.

. .HORATIO N.

' Witnesses; Y A. W. ALMQvIs'r,

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