1. A DEVICE OF THE CHARACTER DESCRIBED COMPRISING A BASE ASSEMBLY, LINK MEANS PIVOTALLY MOUNTED ON THE BASE ASSEMBLY FOR LIMITED MOVEMENT RELATIVE THERETO, PIVOT MEANS CONNECTED TO SAID LINK MEANS IN SPACED RELATION ABOVE THE BASE ASSEMBLY, ELONGATED HANDLE MEANS OPERATIVELY CONNECTED TO SAID PIVOT MEANS FOR MOVEMENT TOWARD SAID BASE ASSEMBLY, LEVER MEANS PIVOTALLY MOUNTED ON THE BASE ASSEMBLY AND DRIVINGLY CONNECTED TO SAID HANDLE MEANS IN SPACED RELATION THEREBELOW FOR RELATIVE MOVEMENT OF SAID LEVER MEANS AND HANDLE MEANS TOWARD EACH OTHER IN RESPONSE TO MOVEMENT OF BOTH SAID HANDLE MEANS AND LEVER MEANS TOWARD THE BASE ASSEMBLY, AND LIMIT STOP MEANS OPERATIVELY CONNECTED TO THE LINK MEANS AND LEVER MEANS FOR LIMITING MOVEMENT OF THE LEVER MEANS TOWARD THE BASE ASSEMBLY IN RESPONSE TO DISPLACEMENT OF THE LINK MEANS BY MOVEMENT OF THE HANDLE MEANS TOWARD THE BASE ASSEMBLY.