Push-pull coupling for power scrapers

In a first, wheel supported, push-pull vehicle (10) having a mounting frame (21) fixedly secured to the rear thereof, for use with a second, wheel supported vehicle (14) having a bail (39) pivotally mounted to the front thereof, the improvement comprising:

• a first upstanding coupling element (27) having upper (27a) and lower (27b) ends, one of said ends including a rearwardly opened, bail engaging hook (37);
• a second upstanding coupling element (28) having upper (28a) and lower (28b) ends, one of said ends of said second element including a forwardly opened, bail engaging hook (38);
• means for independently pivoting said first and second coupling elements on said mounting frame about a common transverse axis (31) between said upper and lower ends;
• and resilient means (36) supported by said mounting frame for engaging the other of said ends of said first and second coupling elements, whereby one of said coupling elements is engaged by said bail for pushing of said first vehicle by said second vehicle and the other of said coupling elements is engaged by said bail for pulling of said second vehicle by said first vehicle, said resilient means cushioning the thrust of said coupling elements against said mounting frame as they are independently pivoted by respective pushing or pulling engagement with said bail.