A Self-Cleaning Filter.
A self-cleaning filter for cisterns, which obviates the use of charcoal and gravel, has just been placed upon the market. The filter consists of a rectangular tin box, within which is a cut off, and three wire screens one above the other, the top one coarse, the next one finer and the lower one finer still. At one side of the filter is a conductor pipe, open on the side next to the filter, and so arranged that the water can be turned, by the use of the cut off, into the conductor, or caused to pass through the screens into a separate outlet to the cistern. The screens slope somewhat toward the conductor at the side of the filter, to allow the accumulated filth to wash off and be carried to the ground. The cap covering the filter and conductor can be slid up to allow the screens to be removed. On the top of the cap is a collar corresponding in size with th down spout to which the filter is to be connected.