Tong return block

Claim 1

IN A HIGHLINE LOGGING SYSTEM OF THE NATURE AFORESAID. THE COMBINATION OF A TONG BLOCK HAVING AN UPPER WHIZ LINE PULLEY JOURNALED IN A PROTECTIVE HOUSING CARRYING A PIVOT PLATE AT THE LOWER PORTION THEREOF, A LOWER LIVE LINE PULLEY JOURNALED IN A PROTECTIVE HOUSING CARRYING A PIVOT PLATE IN THE UPPER PORTION THEREOF AND A TONG-RING HOUSING IN THE LOWER FORWARD PORTION THEREOF ADAPTED TO RELEASABLY CARRY A TONG-RING MEMBER THEREIN , RELEASABLE ON IMPACT, AND A PIVOT PIN PIVOTABLY JOINING SAID MEMBERS; A WHIZ LINE CARRYING SAID TONG BLOCK AND SUPPORTING THEREON A STOP MECHANISM HAVING A SLIDABLE FORWARD MEMBER ADAPTED TO STOP SAID TONG BLOCK, A REARWARD CLAMPING MEMHER NON-SLIDABLY CARRIED BY SAID WHIZ LINE AND A COMPRESSION SPRING THEREBETWEEN ADAPTED TO CAUSE A TONG-RING CARRIED IN SAID TONG-RING HOUSING TO BE RELEASED THEREFROM UPON STOPPING IMPACT; A LIVE LINE PASSING OVER SAID LIVE LINE PULLEY CARRYING AFORESAID TONG-RING; A LOG TONG RELEASABLY CARRIED BY SAID TONG-RING; AND MEANS OF SUPPORTING AND MOVING SAID CABLES.