d chimney flues, preventing ina great degree their satisfactory working ; our en-graving represents a device for obviating the abovedisagreeable features, designed by Mr. George Elberg,of Cincinnati, Ohio. It consists in so disposing aseries of projecting curved shelves, A, or wings, run-ning… … side of the chimney internally, and are continuationsof passages which are made through the chimneywall; in each of the passages, a valve, B, is hung,opening outwardly. It will be apparent that all therain or snow which descends the flue will be caughtby one or the other of the projecting shelves,…
Patents · Ment · Munn · Combination · Manner · Scientific American · Rotary disk · Obtaining patents · Warm air · Patent office · Purpose set · Oxygen gas · Address munn · Compressed air · Black oxide
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![An illustration from [New illustrated catalogue of furniture and general price list] (1875)](https://img.insideoutlibrary.com/img/200/ia-newillustratedca00lave-123-310.webp)
