Movable partition structures

Claim 1

IN A MOVABLE PARTITION STRUCTURE, THE COMBINATION OF A SET OF VERTICAL PANELS EACH HAVING SIDE EDGES AND UPPER AND LOWER EDGES, AN ELONGATED FLOOR TRACK HAVING A PAIR OF SPACED PARALLEL RAILS AND INCLUDING A LATERALLY OFFSET BRANCH RAIL COMMUNICATING WITH ONE OF SAID RAILS ADJACENT ONE END OF SAID FLOOR TRACK, A PAIR OF LONGITUDINALLY SPACED ROLLERS PROVIDED AT THE LOWER EDGE OF EACH OF SAID PANELS AND ENGAGING THE RESPECTIVE RAILS OF THE FLOOR TRACK, AN ELONGATED OVERHEAD TRACK, A STABILIZING TROLLEY PROVIDED AT THE UPPER EDGE OF EACH PANEL IN VERTICAL ALIGNMENT WITH ONE OF SAID ROLLERS AT THE LOWER EDGE, SAID TROLLEY ENGAGING SAID OVERHEAD TRACK, SAID PANELS BEING INDIVIDUALLY MOVABLE FROM A COPLANAR PARTITION FORMING POSITION WHEREIN THEIR SIDE EDGES ARE IN ABUTMENT TO A LATERALLY STACKED POSITION OVERLYING SAID BRANCH RAIL, AND LATCH MEANS PROJECTABLE AND RETRACTABLE THROUGH THE SIDE EDGE OF ONE OF SAID PANELS INTO THE SIDE EDGE OF THE NEXT ADJACENT PANEL WHEN SAID PANELS ARE IN ABUTMENT.