US PATENT SUBCLASS 122 / 312
.~.~ Horizontal-longitudinal drum

Current as of: June, 1999
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122 /   HD   LIQUID HEATERS AND VAPORIZERS

235.11  DF  WATER TUBE {52}
305  DF  .~ Spur {8}
312.~.~ Horizontal-longitudinal drum

DEFINITION

Classification: 122/312

(under subclass 305) Devices in which the drum is horizontal and longitudinal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

195, for horizontal cylindrical water tube boilers.

273+, for other boilers having longitudinal drums.

317, for drums provided with spur tubes that straddle the

combustion chamber.