US PATENT SUBCLASS 48 / 82
.~.~.~ Up-and-down run

Current as of: June, 1999
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48 /   HD   GAS: HEATING AND ILLUMINATING

61  DF  GENERATORS {4}
62 R  DF  .~ Cupola {18}
78  DF  .~.~ Water {3}
82.~.~.~ Up-and-down run {1}
83  DF  .~.~.~.~> Interlocking valves

DEFINITION

Classification: 48/82

Cupola structures containing a body or bodies of incandescent fuel through which the steam is caused to pass first upwardly and then downwardly, or vice versa.