US PATENT SUBCLASS 172 / 136
.~ Tools usable alternately only


Current as of: June, 1999
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172 /   HD   EARTH WORKING

133  DF  DIVERSE TOOLS {29}
136.~ Tools usable alternately only


DEFINITION

Classification: 172/136

(under subclass 133) Apparatus comprising earth working elements arranged adjustably in the apparatus so that when an element of one type is in ground-working position an element of another type must be out of ground working position.

(1) Note. Hand held tools having alternately usable unlike earth working portions or elements are excluded from the definition. See subclass 375.

(2) Note. This definition includes apparatus in which two integral diverse tools must be removed and reversed to bring the diverse tool into operation. The diverse tools must always be present in the apparatus when the apparatus is working the earth.

SEE OR SEARCH THIS CLASS, SUBCLASS:

34, for apparatus adapted to be inverted in its entirely to provide an earth working operation in either position.

204+, for alternately usable tools which differ merely by being for right or left hand operation. 251+, for a tool which is changeable to a diverse tool by an assembly or disassembly operation.

375, for hand cultivating tools having diverse alternately usable earth working portions. See (1) Note above.

777+, for an alternately usable scraper and narrow depending tool attached thereto.

SEE OR SEARCH CLASS

171, Unearthing Plants or Buried Objects,

2, for alternately usable unearthing units.