Tow truck systems with automatic switching means

Claim 1

A TOW TRUCK SYSTEM COMPRISING A FIRST MEANS DEFINING A FIRST SLOT, A SECOND MEANS DEFINING A SECOND SLOT INTERSECTING SAID FIRST SLOT AT AN ACUTE ANGLE, MOVABLE SWITCHPLATE MEANS SUPPORTED ADJACENT THE INTERSECTION OF SAID SLOTS, SAID SWITCHPLATE MEANS BEING MOUNTED FOR MOVEMENT BETWEEN FIRST AND SECOND POSITIONS, SAID SWITCHPLATE MEANS FORMING A PORTION OF SAID FIRST MEANS AND OBSTRUCTING SAID SECOND SLOT IN ITS FIRST POSITION, SAID SWITCHPLATE MEANS FORMING A PORTION OF SAID SECOND MEANS AND OBSTRUCTING SAID FIRST SLOT IN ITS SECOND POSITION, MEANS BIASING SAID SWITCHPLATE MEANS TOWARD ITS SECOND POSITION, RELEASABLE LATCH MEANS ADJACENT THE INTERSECTION OF SAID SLOTS FOR HOLDING SAID SWITCHPLATE MEANS IN ITS FIRST POSITION, AND MECHANICAL MEANS FOR AUTOMATICALLY MOVING SAID SWITCHPLATE MEANS FROM ITS SECOND POSITION TO ITS FIRST POSITION IN RESPONSE TO SHUNTING A MEMBER FROM MOVEMENT ALONG SAID FIRST SLOT TO MOVEMENT ALONG SAID SECOND SLOT.