Switch having two pairs of contacts, one pair being formed of material having higherresisttvity characteristic than the other pair

Claim 1

AN ELECTRICAL SWITCH COMPRISING IN COMBINATION: (A) A PLUG INCLUDING: (1) A CONTACT FORMED OF MATERIAL HAVING LOW ELECTRICAL RESISTIVITY, (2) A SECOND CONTACT FORMED OF MATERIAL HAVING HIGHER RESISTANCE CHARACTERISTIC TO ARC EROSION RELATIVE TO THE MATERIAL OF THE FIRST MENTIONED CONTACT, SAID SECOND MENTIONED CONTACT EXTENDING LONGITUDINALLY OUTWARDLY BEYOND THE FIRST MENTIONED CONTACT; (B) A SOCKET INCLUDING: (1) A CONTACT FORMING A POCKET FOR RECEIVING THE CONTACTS OF THE PLUG, SAID CONTACT OF THE SOCKET BEING FORMED OF MATERIAL HAVING LOW ELECTRICAL RESISTIVITY, (A) SAID CONTACT HAVING AN INWARDLY EXTENDING AND INTEGRALLY FORMED SHOULDER, (2) AN ELEMENT HAVING SPRINGS TANGS SLIDABLY GUIDED BY AND LONGITUDINALLY MOVABLE IN THE POCKET OF THE FIRST MENTIONED CONTACT OF THE SOCKET AND FORMING A SECOND CONTACT, SAID SECOND MENTIONED CONTACT OF THE SOCKET BIENG FORMED OF MATERIAL HAVING HIGHER RESISTANCE CHARACTERISTIC TO ARC EROSION RELATIVE TO THE MATERIAL OF THE FIRST MENTIONED CONTACT OF THE SOCKET, (A) SAID ELEMENT OF THE SOCKET HAVING AN INTEGRALLY FORMED AND OUTWARDLY EXTENDING SHOULDER ADAPTED TO ENGAGE THE FIRST MENTIONED SHOULDER FOR RETAINING SAID LATTER CONTACT IN THE POCKET, (3) AND MEANS NORMALLY BIASING THE SECOND MENTIONED CONTACT OF THE SOCKET LONGITUINALLY AND OUTWARDLY OF THE FIRST MENTIONED CONTACT OF THE SOCKET; (C) ONE OF THE TWO FIRST MENTIONED CONTAINS OF THE PLUG AND SOCKET HAVING MEANS ASSOCIATED THEREWITH FOR BIASING IT LATERALLY TOWARD THE OTHER OF SAID TWO CONTACTS.