Automatic tool mounting for excavators, loaders, graders and the like

Claim 1

For use with an excavator, charger, grader or the like, the combination of a tool holder and a tool, at least two sets of at least two lugs each, fixedly secured on one of the tool holder and tool, means providing matching recesses for the lugs on the other of the tool holder and tool, a locking member on one of the tool holder and tool, an abutment on the other of the tool holder and tool behind which the locking member locks when the lugs are fully seated in the recesses thereby to maintain the lugs fully seated in the recesses, and means for selectively disengaging the locking member from behind the abutment, all the lugs and the axes of all the recesses being parallel to each other so that all the lugs are simultaneously engageable in the recesses by relative movement of the tool holder and tool in a single direction, the tool holder comprising two spaced parallel plates interconnected by spaced transverse members, said lugs or recesses being disposed in spaced relationship along said transverse members between the planes of said plates, said transverse members being flat bars that are spaced apart in a direction perpendicular to the bars and are also laterally offset in a direction parallel to the plane of the bars but perpendicular to the length of the bars.