US PATENT SUBCLASS 202 / 211
.~.~.~ Kiln

Current as of: June, 1999
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202 /   HD   DISTILLATION: APPARATUS

81  DF  APPARATUS {4}
*  DD  .~ Types {3}
*  DD  .~.~ Autothermic {5}
211.~.~.~ Kiln {3}
212  DF  .~.~.~.~> Arched
213  DF  .~.~.~.~> Partable and/or knockdown
214  DF  .~.~.~.~> Bottom discharge

DEFINITION

Classification: 202/211

Structures in which carbonaceous material is to be placed and carbonized by combustion of a part of its own substance. It may also have flues in its walls and floors inside by means of which it is heated, in addition to the heat of combustion of its contents. Many beehive ovens are here.

SEE OR SEARCH CLASS

48, Gas: Heating and Illuminating,

76,.

266, Metallurgical Apparatus,

171+, for ore treating furnaces.