Hot wire having force multiplying spring contact arm

Claim 1

A RELAY MECHANISM COMPRISING A BASE PLATE, A WIRE HAVING A HIGH COEFFICIENT OF THERMAL EXPANSION SUPPORTED ON AND IN SUBSTANTIAL PARALLELISM WITH ONE FACE OF SAID BASE PLATE AND ADAPTED TO ELONGATE IN RESPONSE TO ELECTRICAL ENERGIZATON THEREOF, A FIRST ELECTRICAL CONTACT, MEANS SUPPORTING SAID FIRST ELECTRICAL CONTACT ADJACENT SAID BASE PLATE, A SECOND ELECTRICAL CONTACT MATABLE WITH SAID FIRST ELECTRIC CONTACT, AN ELONGATED RESILIENT CANTILEVE SPRING ARM HAVING ONE END FIXED WITH RESPECT TO SAID BASE PLATE AND HAVING AN OPPOSITE FREELY MOVABLE END SUPPORTING SAID SECOND CONTACT AND EXERTING A FORCE TENDING TO MOVE SAID SECOND ELECTRICAL CONTACT, AND MEANS FOR APPLYING A FORCE ON FIRST ELECTRICAL CONTACT, AND MEANS FOR APPLYING A FORCE ON SAID CANTILEVER SPRING ARM IN A DIRECTION OPPOSITE TO SAID ONE DIRECTION WHEN SAID WIRE IS DEENERGIZED INCLUDING AN ACTUATOR PLATE SLIDABLY MOUNTED IN SAID BASE PLATE FOR MECHANICALLY COUPLING SAID WIRE TO SAID CANTILEVER SPRING ARM AND MEANS ENGAGING SAID CANTILEVER SPRING ARM OPERA-