Crossbar switches for use in automatic telephone systems

Claim 1

A CROSSBAR SWITCH COMPRISING AN EVEN NUMBER OF SELECT MAGNETS, A PLURALITY OF BRIDGE MAGNETS, A PLURALITY OF BRIDGES, ONE FOR EACH BRIDGE MAGNET, A PLURALITY OF SETS OF BRIDGE COMMONS FOR EACH BRIDGE, THE BRIDGE COMMONS BEING SEVERED AT AN EFFECTIVELY CORRESPONDING REGION OF EACH OF THEM INTO SHORT BRIDGE COMMONS AND LONG BRIDGE COMMONS, SAID SHORT BRIDGE COMMONS AND SAID LONG BRIDGE COMMONS HAVING RESPECTIVELY A FIRST AND SECOND GROUP OF SELECT MAGNETS ASSOCIATED THEREWITH, CONTACT CROSSPOINTS EACH APPROPRIATE TO A PARTICULAR SELECT MAGNET AND A PARTICULAR BRIDGE MAGNET, MOVABLE CONTACTS IN EACH CROSSPOINT FOR ENGAGING WITH THE APPROPRIATE BRIDGE COMMONS ON THE OPERATION OF THE PARTICULAR SELECT MAGNET AND THE PARTICULAR BRIDGE MAGNET, A PLURALITY OF INLETS INDIVIDUAL TO DIFFERENT ONES OF SAID BRIDGES, MEANS CONNECTING EACH INLET TO ONE SET OF THE SHORT BRIDGE COMMONS OF THE ASSOCIATED BRIDGE, MEANS CONNECTING MOVABLE CONTACTS OF SAID ONE SET OF SHORT BRIDGE COMMONS AND ASSOCIATED WITH DIFFERENT SELECT MAGNETS OF SAID FIRST GROUP TO DIFFERENT SETS RESPECTIVELY OF THE LONG BRIDGE COMMONS OF SAID BRIDGE AND A PLURALITY OF OUTLETS INDIVIDUALLY MULTIPLED OVER MOVABLE CONTACT OF CORRESPONDING SETS OF LONG BRIDGE COMMONS IN ALL THE BRIDGES.