POSITION AND LOAD-CONTROLLING DEVICE ON AGRICULTURAL MACHINERY, PARTICULARLY SUITED FOR IMPLEMENTS HITCHED TO FARM TRACTORS

摘要

POSITION AND LOAD-CONTROLLING DEVICE ON AGRICULTURAL MACHINERY PARTICULARLY SUITED FOR IMPLEMENTS HITCHED TO FARM TRACTORS A farm tractor hitch control in which hydraulic fluid under pressure is directed through nozzles to impinge upon a pair of plates, one settable by an operator and one indicating position of or load on the hitch, and a valve moves in response to any imbalance in the nozzle pressures to raise or lower the hitch to bring these pressures into balance.