Armature mounting means for electromagnetic relays

Claim 1

AN ELECTROMAGNETIC RELAY COMPRISING; A FIELD MEMBER OF MAGNETIC MATERIAL HAVING A GENERALLY RECTANGULAR BASE AND A GENERALLY RECTANGULAR LEG EXTENDING SUBSTANTIALLY PERPENDICULAR TO SAID BASE A MAGNETIC ARMATURE INCLUDING A FIRST GENERALLY RECTANGULAR LEG WHICH EXTENDS SUBSTANTIALLY PARALLEL TO SAID BASE OF SAID FIELD MEMBER, AND A SECOND GENERALLY RECTANGULAR LEG EXTENDING SUBSTANTIALLY PERPENDICULAR TO SAID FIRST LEG IN A DIRECTION TOWARD SAID BASE OF SAID FIELD MEMBER; AN ELECTROMAGNET MOUNTED ON SAID BASE AND EXTENDING SUBSTANTIALLY PERPENDICULAR THERETO IN A DIRECTION TOWARD SAID ARMATURE, SAID RECTANGULAR LEG OF SAID FIELD MEMBER AND SAID SECOND LEG OF SAID ARMATURE BEING COPLANER AND EACH HAVING A LENGTH SUBSTANTIALLY LESS THAN THE AXIAL LENGTH OF SAID ELECTROMAGNET SO THAT AN EDGE OF SAID SECOND LEG OF SAID ARMATURE TERMINATES CLOSELY ADJACENT TO AND EDGE OF SAID FIELD MEMBER LEG, SAID EDGES BEING IN SUFFICIENTLY CLOSE FACE TO FACE RELATION SO THAT A MAGNETIC FIELD INDUCED IN SAID FIELD MEMBER PASSES READILY INTO SAID ARMATURE, A GENERALLY FLAT PRESTRESSED LEAF TYPE RESTORING SPRING COMPRISING: A GENERALLY FLAT BODY PORTION; AN ARCUATELY BENT MEDIAL PORTION; AND HAVING AT LEAST ONE OPENING AT EACH END OF SAID BODY PORTION SAID SPRING BEING SECURED TO SAID FIELD MEMBER LEG AND TO SAID SECOND LEG OF SAID ARMATURE BY ENLARGED HEAD COMPRESSION FASTENERS EXTENDING THROUGH SAID OPENINGS OF SAID BODY PORTION; AN ARCUATELY CURVED PRESSURE PLATE BETWEEN SAID SPRING AND THE ENLARGED HEAD OF ONE OF SAID COMPRESSION FASTENERS, SAID PLATE HAVING EDGES ENGAGING SAID SPRING ON EACH SIDE OF SAID COMPRESSION FASTENER; SAID SPRING BEING OPERABLE TO MAINTAIN SAID EDGE OF SAID SECOND LEG OF SAID ARMATURE IN CLOSELY ADJACENT RELATION TO SAID EDGE OF SAID FIELD MEMBER LEG, SAID SPRING BEING FURTHER OPERABLE TO PIVOT SAID ARMATURE AWAY FROM SAID ELECTROMAGNET WHEN SAID RELAY IS DEENERGIZED, FIXED AND MOVABLE CONTACTS ASSOCIATED WITH SAID RELAY, AND MEANS CONNECTED TO SAID ARMATURE TO OPERATE SAID MOVABLE CONTACTS IN RESPONSIVE TO MOVEMENT OF SAID ARMATURE.