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Show TO OBVIATE SOOT. Salt Laker's Patent Device for Hot-Air Hot-Air Furnaces Application for patent haa been made for a detlco to obi late soot, dust, dirt nnd other Impurities, to bo used In connection with hot-air furnaces, by William M. Anderson of halt I.oke, As Is well known, soot In Ihe household doei not come from the furnace, but from the outer air The filter consists simply nf two rollers, similar to curtain cur-tain rnlleis, with common cheese-cloth stretched between them and their holders A little Clank Is attached to the end of each I oiler, to turn them One roller Is so placed as to bring tho cheese-cloth to the lower end of tho nlr window through which Ihe cold nlr passes, and the other Is attached lo the upper edge of tho duct Thus tlm air must pass through cheese-cloth be. fore getting Into the house. Ihe cheese-cloth Is of sufficient length lo allow a good current of air and there Is enough of It to last one season When a piece becomes clogged and dirty a fresh piece can be Introduced .py alniply turning the crank. |