Electromagnetically operated reversible switch

Claim 1

IN AN ELECTRIC SWITCH ARRANGEMENT FOR INSTALLATION IN SWITCH BOXES AND FOR BUILDING UP SWITCH BOARDS: A HOUSING HAVING A RECTANGULAR OPENING, A PLURALITY OF PUSHBUTTON SWITCHES EACH HAVING A RECIPROCABLE ACTUATING ELEMENT IN ABOUT THE MIDDLE THEREOF, SAID SWITCH BODIES BEING COMPOSED TO FORM A SWITCH BLOCK AND MOUNTED IN SAID OPENING OF SAID HOUSING, EACH SAID SWITCH BEING RECTANGULAR IN CROSS SECTION FROM END TO END AND SAID ACTUATING ELEMENT HAVING A LENGTH EQUAL TO THE HEIGHT OF SAID HOUSING, AN ELECTROMAGNET ELEMENT LIKEWISE MOUNTED IN SAID OPENING IN SAID HOUSING ADJACENT SAID SWITCH BLOCK FOR ACTUATING SAID SWITCHES OF SAID SWITCH BLOCK, SAID SWITCH BLOCK AND SAID ELECTROMAGNET MAKING UP A UNIT HAVING THE SAME OVERALL DIMENSIONS AS SAID OPENING SO AS TO BE INSERTABLE INTO SAID HOUSING THROUGH SAID OPENING, SAID SWITCH BLOCK ENGAGING ONE WALL OF THE OPENING OF SAID HOUSING AND SAID ELECTROMAGNET ENGAGING THE OPPOSITE WALL THEREOF, SAID SWITCHES INCLUDING MEANS FOR CONNECTING ELECTRIC CONDUCTORS THERETO, EACH OF SAID SWITCHES BEING INVERTABLE IN SAID HOUSING TO OCCUPYING EITHER OF TWO RESPECTIVELY INVERTED POSITIONS THEREIN, AND EACH OF SAID SWITCHES COMPRISING CONTACT ELEMENTS UNDER THE CONTROL OF THE RESPECTIVE SAID ACTUATING ELEMENT, SAID SWITCHES BEING NORMALLY CLOSED OR NORMALLY OPEN DEPENDING ON THE POSITION IN WHICH THEY ARE PLACED IN SAID HOUSING, SAID ELECTROMAGNET INCLUDING AN ARMATURE PORTION ENGAGING SAID ACTUATING ELEMENTS AND SPRING MEANS URGING THE ARMATURE IN ONE DIRECTION.