Apparatus for mounting, demounting, and tipping vehicles

Claim 1

Apparatus for mounting, demounting or tilting a container relative to the flat bed of a vehicle through the use of an L-shaped lever having a normally vertical arm pivotally and detachably engageable at its upper end to the front end of said container, and a normally horizontal arm positioned beneath said container and parallel to and above said flat bed, wherein the improvement comprises a pair of transverse, longitudinally spaced-apart pivots, means detachably securing said pivots to said bed, a pair of transversely spaced brackets connected at one end to the rearward of said pivots and at the other end pivotally connected to the rearward end of said horizontal arm, a thrust rod connected at one end to the forward of said pivots and at its other end pivotally connected to the junction of the vertical and horizontal arms of said lever, whereby when said pivots are attached to said bed, that portion of the bed interconnecting the spaced pivots, said thrust arm, said brackets and the horizontal arm of said lever form a rigid four bar linkage defining the path of movement of the upper end of the vertical arm of said L-shaped lever and hence the movement of the front end of said container, and a piston-cylinder assembly for moving said four bar linkage to mount and demount said container, said piston-cylinder assembly being pivotally connected at one end to said bed at a point forward of said spaced pivots, and at its other end pivotally connected to said brackets at a point intermediate their ends.