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Scientific American, Vol. 63, No. 25 (December 1890) (1890)

leaf 3

An illustration from Scientific American, Vol. 63, No. 25 (December 1890), 1890, leaf 3
ure than usual, by direct hot water radiation in all the rooms. This with a corresponding freedom from leakage and loss of combination insures a circulation of fresh warm air time in stopping for repairs. They make hydraulic throughout a building, and, when proper air exits are presses with from… … the outside through the cold air duct, Y, at the bot- secure the reception of the papers without interruption tom, whence it passes upward around the furnace, in- SNYDER'S ELECTRICAL DAMPER REGULATOR. by the subscriber. © 1890 SCIENTIFIC AMERICAN, INC.

Illustrated · Adapted · Munn · Patents · Scientific American · Apparatus · Builders edition · American supplement · Hot water · Forced draught · Flesh side · Express money · Hair side · High speed · Warm air

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