Power operated pipe wrench and spinning means

Claim 1

A POWER-DRIVEN SPINNER CAPABLE OF ROTATING A FIRST LENGTH OF THREADED TUBING RELATIVE TO A SECOND LENGTH OF THREADED TUBING WHEN SAID SPINNER IS MOUNTED ON A TUBING TONGS THAT INCLUDES A HANDLE HAVING TWO TUBING ENGAGEABLE JAWS SUPPORTED THEREFROM, WHICH SPINNER IS ADAPTED TO BE USED TO ROTATE SAID FIRST LENGTH TO EFFECT AN INITIAL MAKE-UP WITH SAID SECOND LENGTH, WITH SAID ENGAGEABLE JAWS BEING USED TO ENGAGE SAID FIRST LENGTH AFTER SAID INITIAL MAKE-UP AND PERMIT THE COMPLETION OF SAID MAKE-UP AT A DESIRED TORQUE BY MEANS OF A ROTATING FORCE APPLIED TO SAID TONGS THROUGH SAID HANDLE, SAID SPINNER COMPRISING: A FRAME MEMBER; A JAW PIVOTALLY MOVABLE RELATIVE TO SAID FRAME MEMBER TO COOPERATE THEREWITH IN DEFINING AN OPENING WHEREIN SAID FIRST LENGTH OF TUBING CAN BE DISPOSED; TRACK MEANS FORMED ON SAID MEMBERS AND ENCOMPASSING SAID OPENING; A PAIR OF SUPPORT HALF RINGS ROTATABLY MOUNTED ON SAID TRACK MEANS; TWO SEMI-CIRCULAR DIE CARRIERS ROTATABLY MOUNTED ON SAID HALF RINGS; A PLURALITY OF CIRCUMFERENTIALLY SPACED, RADIALLY MOVABLE DIE BLOCKS MOUNTED ON SAID DIE CARRIERS; CAM MEANS DISPOSED AT FIXED POSITIONS RELATIVE TO SAID HALF RINGS, WHICH CAM MEANS IS SLIDABLY ENGAGED BY THE EXTERIOR ENDS OF SAID DIE BLOCKS WHEN SAID DIE CARRIERS ARE ROTATED IN EITHER OF TWO POSSIBLE DIRECTIONS RELATIVE TO SAID HALF RINGS, WITH SAID DIE BLOCKS BEING MOVED INWARDLY WHEN SAID SLIDABLE MOVEMENT TAKES PLACE; LATCH MEANS FOR RELEASABLY LOCKING SAID FRAME AND JAW MEMBERS TOGETHER IN A CLOSED POSITION; POWER MEANS; TRANSMISSION MEANS CONNECTING SAID POWER MEANS TO SAID HALF RINGS TO ROTATE THE SAME WITH SUFFICIENT INITIAL ACCELERATION AS TO MOVE SAID DIE BLOCKS INWARDLY TO FRICTIONALLY GRIP SAID FIRST LENGTH AND ROTATE THE SAME RELATIVE TO SAID SECOND LENGTH; MANUALLY OPERABLE MEANS FOR ACTUATING SAID POWER MEANS; SAFETY MEANS THAT ONLY ALLOWS SAID MANUALLY OPERABLE MEANS TO BE OPERATED WHEN SAID FRAME AND JAW MEMBERS ARE LOCKED TOGETHER BY SAID LATCH MEANS; MEANS FOR AUTOMATICALLY STOPPING THE ROTATION OF SAID HALF RINGS IN POSITIONS WHERE THE ABUTTING FACES THEREOF ARE IN SUBSTANTIALLY A VERTICAL PLANE WHICH PASSES THROUGH THE ABUTTING FACES OF SAID FRAME AND JAW MEMBERS WHEN THE SAME ARE IN A CLOSED POSITION; AND SUPPORT MEANS FOR PIVOTALLY SUPPORTING SAID FRAME AND JAW MEMBERS FROM SAID HANDLE.