Overhead rail systems

Claim 1

IN AN OVERHEAD RAIL SYSTEM FOR WHEELED CARRIERS OF THE TYPE HAVING A DEPENDING, LOAD CARRYING ARM, A MAIN RAIL INCLUDING ALINED SECTIONS SPACED TO PROVIDE A GAP AND A BASE HAVING PARALLEL SIDES AND EXTENDING BETWEEN SAID SECTIONS IN SUPPORT THEREOF, SAID SECTIONS EXTENDING ALONG ONE OF SAID SIDES, A STORAGE RAIL EXTENDING LATERALLY OF SAID MAIN RAIL ADJACENT BUT SPACED FROM SAID LAST NAMED SIDE IN THE ZONE OF SAID GAP, AND A SWITCH INCLUDING A DEPENDING PIVOT SUPPORTED BY THE OTHER OF SAID SIDES FOR BOTH VERTICAL AND ROTARY MOVEMENT RELATIVE TO SAID BASE, SAID SWITCH INCLUDING TWO RAIL PORTIONS, ONE AT EACH SIDE THEREOF, ONE FILLING SAID GAP TO BRIDGE SAID SECTIONS IN ONE SWITCH POSITION AND THE OTHER CONNECTING SAID STORAGE RAIL TO ONE OF SAID SECTIONS WHEN THE SWITCH IS TURNED 180* FROM ITS FIRST NAMED POSITION, SAID SWITCH INCLUDING DEPENDING PORTIONS ENGAGING BOTH OF SAID BASE SIDES TO PREVENT SWITCH TURNING, SAID PIVOT BEING OF SUCH LENGTH THAT SAID SWITCH MAY BE ELEVATED INTO A POSITION IN WHICH SAID DEPENDING PORTIONS ARE DISENGAGED, SAID PIVOT INCLUDING A HANDLE BY WHICH SAID SWITCH MAY BE SO ELEVATED AND THEN TURNED.