Clamp for grasping storage drums

Claim 1

A CLAMP FOR GRASPING AND LIFTING AN UPRIGHT STORAGE DRUM HAVING CYLINDRICAL SIDE WALLS AND A RECESSED UPWARDLY FACING END SURFACE BOUNDED BY A CIRCULAR RIM HAVING AN OUTWARLDY PROTRUDING BEAD, COMPRISING: FIRST AND SECOND SPACED ELEMENTS OPPOSED TO ONE ANOTHER HAVING INWARDLY DIRECTED SURFACES TO RESPECTIVELY ENGAGE THE DRUM SIDE WALLS IMMEDIATELY BELOW THE BEAD; SUPPORT MEANS MOVABLY CARRYING SAID FIRST AND SECOND ELEMENTS TO LOCATE SAID ELEMENTS RELATIVE TO THE RIM END SURFACE AND RIM OF THE DRUM, SAID SUPPORT MEANS COMPRISING A BAR ADAPTED TO REST ON THE DRUM END SURFACE, ONE END OF SAID BAR BEING IN CONTACT WITH THE INNER SURFACE OF THE DRUM RIM; SAID FIRST AND SECOND ELEMENTS BEING PIVOTALLY CONNECTED TO SAID BAR AT OPPOSITE LONGITUDINAL ENDS THEREOF FOR PIVOTAL MOTION ABOUT A HORIZONTAL AXES PERPENDICULAR TO THE LONGITUDINAL AXIS OF SAID BAR; LIFTING MEANS OPERATIVELY CONNECTED TO SAID FIRST AND SECOND ELEMENTS TO MOVE THE INWARDLY DIRECTED SURFACES THEREOF TOWARD ONE ANOTHER TO CAUSE THEREBY THE INWARDLY DIRECTED SURFACES OF SAID FIRST AND SECOND ELEMENTS TO ENGAGE THE SIDE WALLS OF THE DRUM WHEN A LIFTING FORCE IS EXERTED ON SAID LIFTING MEANS; AND A LEVER PIVOTED ON SAID BAR COAXIALLY WITH THE PIVOTED ELEMENT AT THE END OF SAID BAR OPPOSITE TO THE END THEREOF IN CONTACT WITH THE DRUM RIM, SAID LEVER HAVING A PORTION THEREOF ADAPTED TO ENGAGE THE INNER SURFACE OF THE TOP RIM, SAID LEVER BEING OPERATIVELY CONNECTED TO SAID LIFTING MEANS WHEREBY SAID PORTION OF SAID LEVER IS BROUGHT INTO ENGAGEMENT WITH THE RIM WHEN A LIFTING FORCE IS EXERTED ON SAID LIFTING MEANS.