US PATENT SUBCLASS 172 / 333
.~.~ Arched wheel frame (i.e., straddle row, etc.)

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

329  DF  GUIDED BY WALKING ATTENDANT; SUPPORTED, PROPELLED, OR HELD IN POSITION BY ATTENDANT {7}
332  DF  .~ Tool manipulated with respect to mounting frame {5}
333.~.~ Arched wheel frame (i.e., straddle row, etc.) {9}
334  DF  .~.~.~> Seat counterbalanced beam
335  DF  .~.~.~> With spring biasing means {1}
337  DF  .~.~.~> Combined implement lift and wheel adjustment
338  DF  .~.~.~> Tongueless, animal draft {1}
340  DF  .~.~.~> Multiple plant row type
341  DF  .~.~.~> With added intermediate tool
342  DF  .~.~.~> Cross connected drag bars
343  DF  .~.~.~> Foot operated
344  DF  .~.~.~> With support bracket for transport

DEFINITION

Classification: 172/333

(under subclass 332) Apparatus comprising a wheeled frame having the central portion thereof elevated above the axis of rotation of the wheels to clear a crop row and having a pair of attendant manipulated earth working elements adapted to operate on opposite sides of a crop row.

(1) Note. For classification under the definition the means by which the earth working elements are manipulated (e.g., handles) need not be claimed.