Boat trailer jack

Claim 1

A JACK FOR A BOAT TRAILER OF THE TYPE HAVING A WHEELED BOAT SUPPORT, A TONGUE PROJECTING FORWARDLY FROM SAID BOAT SUPPORT FOR HITCHING TO A TOWING VEHICLE, AND A BOAT WINCH MOUNTED ON SAID TONGUE IN FIXED POSITION THEREABOVE HAVING A CABLE FOR LOADING AND UNLOADING A BOAT; SAID JACK COMPRISING A MOUNTING SECURED ON SAID TONGUE HAVING A VERTICAL PASSAGE, AN ELONGATED UPRIGHT MEMBER INCLUDING AN ELONGATED VERTICAL ROD ROTATABLE AND VERTICALLY SLIDABLE IN SAID PASSAGE, THE UPPER END OF SAID ROD PROJECTING BELOW SAID MOUNTING AND THE LOWER END THEREOF PROJECTING BELOW SAID MOUNTING, SAID MEMBER ALSO INCLUDING A GROUND ENGAGING WHEEL, A WHEEL MOUNTING CARRIED BY THE LOWER END OF SAID ROD FOR TURNING MOVEMENT ABOUT THE ROD AXIS AND SUPPORTING SAID GROUND ENGAGING WHEEL FOR ROTATION ABOUT A HORIZONTAL AXIS, AND MEANS FOR FORCING SAID MEMBER DOWNWARDLY TO CAUSE SAID WHEEL TO ENGAGE THE GROUND UNDER A PRESSURE SUFFICIENT TO ELEVATE SAID TONGUE AND FOR RELEASABLY LOCKING SAID MEMBER AGAINST UPWARD MOVEMENT, SAID MEANS INCLUDING SAID BOAT WINCH AND CABLE, A HOOK ON THE FREE END OF SAID CABLE, SAID ROD HAVING AN OPEN TUBULAR UPPER END TO LOOSELY RECEIVE THE RETURN-BENT END OF SAID HOOK, AND A PULLEY ATTACHED TO SAID FIRST-MENTIONED MOUNTING BENEATH SAID WINCH AND THE UPPER END OF SAID ROD UNDER WHICH AN INTERMEDIATE PORTION OF SAID CABLE CAN BE REEVED TO APPLY A DOWNWARD FORCE ON SAID MEMBER WHEN SAID HOOK IS ENGAGED WITH THE OPEN TUBULAR UPPER END OF SAID ROD AND SAID WINCH IS OPERATED TO TAKE UP SAID CABLE, SAID WHEEL MOUNTING AND WHEEL BEING REMOVABLE FROM SAID ROD AND SAID ROD THEREAFTER BEING REMOVABLE IN AN UPWARD DIRECTION FROM SAID FIRST-MENTIONED MOUNTING SO THAT SAID ROD, WHEEL MOUNTING AND WHEEL CAN BE STORED WHEN NOT IN USE.