US PATENT SUBCLASS 172 / 223
.~.~ Moldboard type shiftable about longitudinal axis

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

204  DF  ALTERNATING FOR RIGHT OR LEFT HAND OPERATION (OTHER THAN SCRAPER) {10}
219  DF  .~ Tool shifted for opposite throw {3}
223.~.~ Moldboard type shiftable about longitudinal axis

DEFINITION

Classification: 172/223

(under subclass 219) Apparatus in which the earth working element is of the type having a point, share and moldboard and in which the earth working element is adjustable about an axis extending substantially in the direction of travel to reverse the direction of soil movement.

SEE OR SEARCH THIS CLASS, SUBCLASS:

224+, for alternately usable separate tools which are adjusted about a longitudinal axis.