Ships – Building – Canal and ferry boats
Patent
1974-11-19
1976-07-27
O'Dea, William F.
Ships
Building
Canal and ferry boats
98 58, 98 84, 114211, 239546, B05B 1504
Patent
active
039713024
ABSTRACT:
The upper end of the chimney supports a throttling means formed by a pair of pivotally mounted parts which pivot towards each other to form a funnel. The two parts are located within an oval-shaped cover about the upper end of the chimney and are moved by means of a pulley system mounted on the chimney exterior.
REFERENCES:
patent: 1090389 (1914-03-01), French
patent: 1322711 (1919-11-01), Maranville
patent: 1327452 (1920-01-01), Williams
patent: 2593420 (1952-04-01), Diehl
patent: 2699647 (1955-01-01), Goebel
patent: 2714847 (1955-08-01), Suebel
Acker, H. G., Stack Design to Avoid Smoke Nuisance, Bethlehem Steel Co., Mass., 1951, p. 33.
Joyce Harold
O'Dea William F.
Sulzer Brothers Limited
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