| 摘要 |
347,371. Steam boiler furnaces. EINSLER, 0., 325, Karl Duisburgstrasse, Leverkusen, and HANNOVERSCHE MASCHINENBAU-AKT.-GES. VORM. G. EGESTORFF (HANOMAG), Linden, Hanover, both in Germany. Feb. 24, 1930. No. 6133. [Class 51 (i).] In the flue 1, leading directly from a steam boiler furnace to the stack flue 2, is disposed a bell damper 3 adapted to be lowered by a chain 9 on to a yielding seating to divert the gases to heat exchange apparatus such as a feed-water heater 10. The bell 3 is formed with reinforcing members 6 and is attached to the chain 9 by a rod 8 which is guided in a bracket 7. The yielding seating comprises a trough 4 containing sand or asbestos.
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