Agricultural machine with detachable and separately usable propelling structure

In combination a wheeled frame and rotary hoe propelling means, the combination forming an agricultural machine,

• said propelling means comprising an engine, a clutch, a gearbox, and a shaft, said engine driving said gearbox through said clutch, said gearbox driving said shaft;
• said wheeled frame comprising mounting means for agricultural implements such as a plow, handle means on the frame for steering and controlling the combination, throttle and clutch control means on said handle means detachably connected to said engine and said clutch respectively, at least one axle rotatably mounted on said frame, ground wheels on said at least one axle whereby the frame may be run over the ground, a toothed wheel on said at least one axle operatively connected to drive said ground wheels, a mounting for said propelling means arranged so that said propelling means are readily detachably mounted on said frame at a high level relative to the ground, and a pinion wheel detachably mountable on said shaft, drivably engaging said toothed wheel, said pinion wheel and toothed wheel being sized to drive said ground wheels at a substantially reduced speed relative to the shaft speed;
• said propelling means being readily detachable as a complete assembly so that said rotary hoe propelling means is usable separately for rotary hoeing, said propelling means being readily mounted on said wheeled frame to complete said agricultural machine.