Switch mechanism for trolleysupported panels

Claim 1

IN A ROOM STRUCTURE, AN OVERHEAD PRIMARY TRACK, A PLURALITY OF PANELS EACH HAVING A PAIR OF TROLLEYS SWIVELLY MOUNTED THEREON AT THE UPPER END THEREOF AND ENGAGE IN SAID TRACK TO ENABLE THE PANELS TO BE MOVED ALONG THE TRACK IN END-TO-END ABUTTING RELATION TO FORM A PARTITION IN SAID ROOM STRUCTURE, A PAIR OF PARALLEL PANEL STORAGE TRACKS SPACED APART IN ACCORDANCE WITH THE TROLLEY SPACING ON EACH PANEL, SAID STORAGE TRACKS INTERSECTING THE PRIMARY TRACK, A PAIR OF TRACK SWITCHES LOCATED ONE AT EACH OF THE INTERSECTIONS OF THE TWO STORAGE TRACKS WITH THE PRIMARY TRACK, SAID SWITCHES BEING ROTATABLE FROM A POSITION IN ALIGNMENT WITH THE PRIMARY TRACK TO A POSITION IN ALIGNMENT WITH THE STORAGE TRACKS, MEANS FOR ROTATING ONE OF SAID SWITCHES, A SPROCKET ASSOCIATED WITH EACH OF THE SWITCHES, AN ENDLESS CHAIN TRAINED AROUND BOTH SPROCKETS, SAID CHAIN HAVING SLACK THEREIN AND MEANS FOR ADJUSTING THE ROTATIVE POSITION OF THE TWO SPROCKETS RELATIVE TO ONE ANOTHER COMPRISING A PAIR OF IDLER SPROCKETS, ONE IDLER SPROCKET BEING ENGAGED WITH ONE RUN OF THE CHAIN AND THE OTHER IDLER SPROCKET BEING ENGAGED WITH THE OPPOSITE RUN OF THE CHAIN, SAID IDLER SPROCKETS EACH BEING SHIFTABLE IN A PATH GENERALLY TRANSVERSELY OF A LINE CONNECTING THE TWO SWITCH SPROCKETS TO ENABLE SHIFTING OF THE CHAIN RELATIVE TO ONE OF THE SPROCKETS.