Harvesters – Motorized harvester – Having motor on ground-supported carrier
Patent
1987-11-18
1989-06-06
Weiss, John
Harvesters
Motorized harvester
Having motor on ground-supported carrier
280 4313, A01D 3474
Patent
active
048359521
ABSTRACT:
A lawn mower height adjustment linkage which is actuated by the rotation of a hand crank mounted on the mower's handle. The linkage raises or lowers the lawn mower deck relative to the ground by moving all four wheels of the mower simultaneously. The hand crank is threaded so that the mower height can be set at an infinite variety of positions. The location of the hand crank on the handle allows safe operation of the height adjustment linkage even when the mower is running. The wheels of the mower are mounted on bell cranks which are pivotably pinned to the mower so that rotation of the bell cranks will raise or lower the wheels relative to the mower. The bell crank corresponding to the left front wheel is linked to the hand crank through a connecting rod and a rotatable pivot arm, the pivot arm being mounted on the lawn mower handle. The motion of the connecting rod which rotates the left front bell crank is transmitted to the bell cranks of the remaining wheels through a plurality of bars which connect the bell cranks so that the height of all wheels are adjusted simultaneously. A height indicator is provided on the handle and is easily readable by the operator during operation.
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