Safety clamp device

Claim 1

A SAFETY CLAMP DEVICE ADAPTED TO BE SLIDABLY MOUNTED ON AN UPRIGHT SAFETY CABLE AND CONNECTED TO A SUPPORTING HOIST LINE WHICH IS ATTACHED TO AND INTERCHANGEABLY RAISES AND LOWERS A MOVABLE PLATFORM, SAID SAFETY DEVICE COMPRISING A RIGID BODY MEMBER ADAPTED TO BE SLIDABLY MOUNTED ON THE UPRIGHT SAFETY CABLE, SAID BODY MEMBER HAVING AN UPRIGHT CABLE RECEIVING CRADLE AND A PAIR OF SPACED APART SIDE WALLS EXTENDING OUTWARDLY THEREFROM AND HAVING AN UPRIGHT BAR ENGAGING EDGE OF A PREDETERMINED LENGTH OPPOSITE THE CABLE ENGAGING CRADLE WHEREBY THE SAFETY CABLE MAY BE POSITIONED BETWEEN THE PAIR OF SIDE WALLS TO POSITION THE SAFETY CABLE IN THE UPRIGHT CABLE RECEIVING CRADLE, A LEVER ARM SHIFTABLY MOUNTED ON SAID BODY MEMBER FOR MOVEMENT ABOUT AN AXIS WHICH IS TRANSVERSE TO THE SLIDABLE MOVEMENT OF SAID BODY MEMBER RELATIVE TO THE SAFETY CABLE, SAID LEVER ARM SHIFTABLE BETWEEN A SAFETY CABLE ENGAGING POSITION, AND A SAFETY CABLE RELEASE POSITION, AND SAID LEVER ARM MEMBER HAVING A SAFETY CABLE ENGAGING PORTION ADAPTED TO ENGAGE THE SAFETY CABLE IN THE SAFETY CABLE ENGAGING POSITION, LEVER ARM BODY MOUNTING MEANS SHIFTABLY ATTACHING SAID LEVER ARM TO SAID BODY MEMBER, AT LEAST ONE ELONGATE BAR MEMBER PIVOTALLY ATTACHED TO SAID LEVER ARM AT THE END OF SAID LEVER ARM OPPOSITE THE END WHICH IS SHIFTABLY MOUNTED ON SAID BODY MEMBER SAID BAR MEMBER HAVING THE HOIST LINE ATTACHED TO THE UPPER PORTION AND THE MOVABLE PLATFORM ATTACHED TO THE LOWER PORTION OF SAID ELONGATE BAR, SAID ELONGATE BAR POSITIONED SUBSTANTIALLY UPRIGHT IN THE NORMAL RELEASE POSITION AND ADPATED TO CONFRONT THE PARALLEL BAR ENGAGING EDGES OF SAID BODY MEMBER ALONG THE EDGES THEREOF WHEREBY THE CABLE ENGAGING PORTION OF SAID LEVER ARM IS URGED IN THE CABLE RELEASE POSITION, SAID ELONGATE BAR ADAPTED TO SHIFT DOWNWARD AT THE TIME OF HOIST LINE FAILURE THEREBY URGING SAID LEVER ARM DOWNWARD AND ENGAGING THE CABLE ENGAGING PORTION THEREOF WITH THE SAFETY CABLE WHEREBY THE SAFETY CABLE IS CLAMPED BETWEEN THE CABLE RECEIVING CRADLE OF SAID BODY MEMBER AND THE CABLE ENGAGING PORTION OF SAID LEVER ARM THEREBY PREVENTING MOVEMENT OF SAID BODY MEMBER ON THE SAFETY CABLE AND ARRESTING DOWNWARD MOVEMENT OF THE PLATFORM AND LEVER ARM BAR MOUNTING MEANS SHIFTABLY ATTACHING SAID LEVER ARM TO SAID ELONGATE BAR MEMBER.