On the smokeless fire-place : chimney-valves, and other means, old and new, of obtaining healthful warmth and ventilation (1855)
Arnott, Neil, 1788-1874 · London : Longman, Brown, Green, and Longmans · leaf 176
beencommitted to a most wasteful extent. The pump, orbellows, of Dr. Hales is here represented. A B C D is a wooden box or case, ten feet longfrom A to B, five feet wide from A to E, andtwo feet deep from B to D. Within is a moveablepartition or midriff, L M R 0, which fits the box as apump-piston… … and down between A and C, when the partition flap ismoved by the handle P of the piston-rod P N. Asthis midriff moves to and fro, with its edges distantonly one-twentieth of an inch from the sides of the box,very little air in comparison with the whole escapes bythe edges. The end of the box at A C…
Heating · Ventilation · Fireplaces
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