| 摘要 |
<p>PROBLEM TO BE SOLVED: To accomplish increase engine horsepower by simply operating a steering handle in a large way while leaving the main speed change lever to let in the position of the planting speed in the variablespeed operative groove. SOLUTION: This automatic horsepower-up device is so designed that a microswitch S1 , set up at a position P of planting speed in a variable-speed operative groove 4 and running to 'ON' on contact with the main speed change lever 3, both electric switches S2 and S3 set up on the basal portion of a steering handle 5 and running to 'ON' respectively by operating the steering handle 5 left and right in a large way, and a solenoid 6 set up on the basal portion of a foot accelerating pedal 2 and capable of actuating the pedal 2 to engine revolution-up side, are connected, respectively, to an electric circuit connected to a battery. When the steering handle 5 is operated left and right in a large way while leaving the main speed change lever 3 to let in the position P of planting speed, the foot accelerating pedal 2 is enabled to set in motion to the engine revolution-up side by the action of the solenoid 6.</p> |
