US239595A - Water-filter - Google Patents

Description

s. H. BELLOWS. Water Filter.

No. 239,595. Patented April 5-,188lj.

Mwentow 6H 356:0 m s 52 m2, SM.

N PETERS. PKOTO-LITHOGRAPMER WASHINGTON. Dr C.

UNITED STATES PATENT OFFICE;-

STEPHEN H. BELLOWS, OF ATHOL, MASSACHUSETTS.

WATER- FILTER.

SPECIFICATION formingpart of Letters Patent No. 239,595, dated April 5, 1881.

" Application filed February 14,1880.

To all whom it may concern Beit known that I, STEPHEN H. BELLOWS, of Athol, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements pertaining to a Water-hilter, of which the following is a description, reference being had to the accompanying drawings, where- Figure l is a view of a filter embodying my improvements, in central vertical longitudinal section. Figs. 2 and 5 are top and side views of the sectional nut made use of.

My invention is an improvement upon that kind of filtering apparatus which has an airchamber appurtenant to the water-pipe, with a filter between the pipe and chamber and a faucet each side of the filter, through one of which unfiltered water can be drawn, and through the other of which filtered water can be drawn.

The letter a denotes the casing of the filter ing apparatus-a vertical cylinder in shape.

The letter b denotes. the inlet-pipe, which enters at the side of the casing to, and has a port, c,opening toward the portal. This port d is the one through which unfiltered water is drawn, and it is also the port which is used when it isdesired to clean the packing or filter proper.

The'letterf denotes a valve for port 01 borne by nozzle 9, (through the medium of spiderarms h,) which nozzle is interiorly threaded, and screws upon the exteriorly-threaded portion of the casingu. It is obvious that by rotating this nozzle on the casing the valve f may be made to open and close the port cl.

Within the casing, and just above pipe b, is a shoulder, 2', on which lies the strainer-disk j, and on this disk lies the packing 70, preferably one or more thicknesses of felt. On the packing lies the upper strainer-disk, 9". The packing and the two disks are held in place by the basket 1, consisting of an exteriorly-threaded annulus at its upper end,,havin g arms reaching down, and hearing at the lower end another annulus, which bears upon the upper strainer-disk. The exteriorlythreaded portion screws into an interiorly-threaded portion of the casing. This peculiar construction of this basket or basket-nut brings the said interior thread of the casing to a position where it can be conveniently cut, and at the same time allows the water to pass freely through the nut to the air-chamber above, and also allows the water to pass out through the sides of the nut to the filtered water-port.

The letter at denotes an air-chamber, preferably of glass, the neck of which bears the collar m. This collar (there being a packing-ring intervening) rests on the shoulder 0, made within the casing, and is, with the appurtenant air-chamber, secured to place by the sectional nut n n, a proper packing-ring intervening.

. The letter 10 denotes the outlet-pipe, and 1) denotes the port through which filtered water is drawn.

7' denotes the valve for this port borne, through the medium of spider-arms, on the nozzle .9, which is interiorly threaded and screws upon the exteriorly-threadecl portion of pipe 19.

The letter t denotes a removable reducingplug fitting into inlet-pipe b, with a hole, t, through it for the passage of water. This central hole is to be made smaller or larger inversely, as the water-pressure is greater or less, to retard the sudden rush of water which would otherwise occur when a discharge-port is first opened under a great head. It is a simple and cheap device for this purpose, so located that it cannot be readily tampered with by careless or designing persons.

Supposing the ports 01 p to be closed, water entering the casing through port 0 will rise, and, passing through the packing, will be filtered, and, according to the head or pressure, will fill more or less space in the air-chamber. Now, by opening port p, filtered water may be drawn. By opening port d, port 10 being closed, not only may unfiltered water be drawn, but the water in the air-chamber will be forced and drawn down through the packing, and the packing will thereby be cleansed of its impurities with filtered water. The construction hereinbefore indicated-i. 0., having the port 0 opening toward the port cl-has a peculiar value in this connection. In other apparatus the air-chamber and prevent water from passing from the air-chamber through the packing to cleanse it. By having port 0 so located with reference to port 01 as to direct the cur-' rent toward port d, I do not have to rely upon the air-chamber pressure Wholly,-for the current passing from port 0 to port at has a suctorial influence on the water in the air-chamber.

I claim as my invention 1. In combination, the casing 11, having the outlet-ports (Z 1), the inlet-pipe I), having the port 0, directing the incoming current toward port d, the filter 7c, and the air-chamber m, all substantially as described.

2. The combination of the casin g a, bearing shoulder t, and pipe 19, the filter k, and the basket-nut Z, all substantially as shown and described.

3. In combination, the casing at, having the interior shoulder, 0, the air-chamber m, having the collar on, and the nut n n, all substantially as shown and described.

4. The combination, with the filter-chamber and layers of felt or equivalent material placed Within said chamber, of a glass air-chamber and means for securing its neck within the filter-casing, and intervening follower or followers for retaining the filtering material against vertical displacement.

5. The combination, with the filter-chamber, of a discharge-valve located below the same, and a supply-pipe extending within the discharge-chamber.

STEPHEN H. BELLOVS.

Witnesses:

W. E. SIMONDS, R0131. I GAYLORD.

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