Elevator spider

Claim 1

A WELL PIPE SPIDER-ELEVATOR COMPRISING: A BODY HAVING MEANS THEREON FOR RELEASABLY ENGAGING ELEVATOR LINKS; SAID BODY ALSO HAVING A CENTRAL OPENING THERETHROUGH; A SLIP ASSEMBLY DISPOSED FOR VERTICAL MOVEMENT IN SAID OPENING AND INCLUDING SLIP ELEMENTS MOVABLE TOWARDS AND AWAY FROM THE AXIS OF THE OPENING; MEANS ON THE SLIP ELEMENTS AND THE BODY FOR CAMMING SAID SLIP ELEMENTS TOWARDS SAID AXIS UPON DOWNWARD MOVEMENT OF SAID SLIP ASSEMBLY; MEANS FOR ELEVATING SAID SLIPS; SAID SLIP ELEVATING MEANS INCLUDING A LEVER PIVOTALLY MOUNTED ON SAID BODY AND CONNECTED TO SAID SLIP ASSEMBLY; MEANS ENGAGEABLE WITH SAID LEVER FOR RELEASABLY RETAINING SAID SLIP ASSEMBLY IN AN ELEVATED POSITION; THE MEANS FOR RELEASABLY RETAINING SAID SLIP ASSEMBLY IN AN ELEVATED POSITION INCLUDING A PIN CARRIED BY SAID LEVER; A LATCH ELEMENT SHIFTABLY CARRIED BY SAID BODY AND MOVABLE INTO AND OUT OF LATCHING ENGAGEMENT WITH SAID PIN; AND MEANS FOR RELEASABLY LOCKING SAID LATCH ELEMENT IN ENGAGEMENT WITH SAID PIN.