Sequential loading system having auxiliary switches

Claim 1

Sequential loading control system comprising: a plurality of loads; a plurality of relay housings; respective main switches mounted in the respective housings and including respective first and second contacts, thermostatic blade means mounted on one end to said respective housings and carrying said respective second contacts on the free ends thereof for travel through a path into engagement with said respective first contacts upon flexure of said respective blade means; respective auxiliary switches mounted in the respective housings and including respective stationary contacts and elongated resilient and electrically conductive arms mounted on one end from the respective housings and having the free ends thereof formed to define respective housings and having the free ends thereof formed to define respective movable contacts disposed for engagement with the respective stationary contacts upon flexure of said respective arms, said arms being mechanically coupled with the respective thermostatic blades to form respective units; respective time delay drive means including heat motors disposed adjacent each thermostatic blade; actuating means connected with one of said time delay drive means for actuating said system; and circuit means connecting said loads to the respective main switches to form units and the auxiliary switch of each unit with the time delay drive means of the succeeding unit whereby when said system is actuated, the time delay drive means of the first unit will be energized to, after a time delay, close the main and auxiliary switches of the first unit to energize the load of the first unit and the time delay means of the succeeding unit.