Abstract: A device for automatically connecting a work machine to a tractor includes a connector for interconnecting the rear ends of top link and lower links of a three-point link assembly pivoted to the body of the tractor. The connector has an upper engaging portion and lower engaging portions automatically engageable with an upper connecting portion and lower connecting portions of the work machine, respectively. The connector is further provided with an assembly for automatically coupling the input shaft of the work machine to a transmission shaft connected to the PTO shaft of the tractor. The coupling assembly includes a coiled spring supporting the rear end of the transmission shaft freely movably and axially movably for accommodating misalignment of the input shaft relative to the transmission shaft when the two shafts are to be coupled together.

Abstract: A vibratory power take-off apparatus for a tractor including a vibration producing unit detachably mountable on the frame of the tractor. The unit comprises a rotary transmitting shaft detachably fittable to a PTO shaft on the tractor frame and having a connecting portion eccentric with the axis of the PTO shaft, a holding case supporting the rotary transmitting shaft rotatably relative thereto, a mounting cylinder fitting around the case and having supporting portions connectable to the tractor frame, intermediate vibration transmitting means supported by the cylinder pivotally movably up and down, means for operatively coupling the connecting portion of the shaft to the transmitting means, and intermediate vibration delivering means having one end pivoted to the transmitting means and the other end pivotally connectable to a working implement connected to the tractor frame.