MECHANICAL TRANSMISSION GEAR FOR CONTINUOUS SPEED CONTROL DEVICE,PARTICULARLY FOR THE ADVANCE MOTION OF MOTOR DRIVEN CULTIVATORS AND TRACTORS

摘要

The gear box for the agricultural cultivator, or similar implement has a main drive shaft from the engine which drives the PTO for the tool attachment by a fixed ratio reduction gearing. This provides a tool working speed related to the engine speed. The wheel drive is via a second drive shaft, coupled to the first by a belt and conve variable ratio transmission and a set of epicyclic gear trains. The operator can thus select the drive speed of the machine independent of the working speed of the tools. This allows the operator to provide the optimum tilling etc. over different soil conditions.