Relays with indicator

Claim 1

AN IMPROVED ELECTROMAGNETIC SIGNAL DEVICE COMPRISING A COIL, A PIVOTAL ARMATURE MOVABLE UPON A PREDETERMINED CURRENT CONDITION IN SAID COIL FROM A FIRST POSITION TO A SECOND POSITION, A RECIPROCABLE INDICATOR, A FIXED BASE, A MOUNTING STRUCTURE SECURED TO SAID BASE AND SLIDABLY RECEIVING A PORTION OF SAID INDICATOR WHEREBY THE INDICATOR IS SLIDABLY MOVABLE BACK AND FORTH BETWEEN A FIRST POSITION AND A SECOND POSITION, A SPRING BIASING SAID INDICATOR TOWARD SAID SECOND POSITION, A PIVOTAL STOP MOVABLE BY SAID ARMATURE FROM A FIRST POSITION TO A SECOND POSITION; SAID ARMATURE, SAID STOP AND SAID INDICATOR BEING POSITIONED JOINTLY IN THEIR FIRST POSITIONS; A SECOND SPRING BIASING SAID STOP TOWARD SAID INDICATOR, A FIRST ABUTMENT ON SAID INDICATOR ENGAGEABLE WITH SAID STOP TO RESTRAIN MOVEMENT OF SAID INDICATOR TOWARD ITS SECOND POSITION WHEN SAID STOP AND SAID INDICATOR ARE IN THEIR FIRST POSITIONS, A SECOND ABUTMENT ON SIAD INDICATOR, SAID SECOND ABUTMENT BEING SPACED FROM THE FIRST ABUTMENT BY THE AMOUNT OF SLIDABLE MOVEMENT OF SAID INDICATOR DESIRED BETWEEN THE LATTER''S FIRST AND SECOND POSITIONS, MOVEMENT OF SAID STOP BY SAID ARMATURE FROM SAID STOP''S FIRST POSITION TO ITS SECOND POSITION BEING AGAINST THE BIAS OF SAID FIRST MENTIONED SPRING AND SUFFICIENT TO DISENGAGE SAID STOP FROM SAID FIRST ABUTMENT, WHEREBY SAID INDICATOR SLIDES TOWARD ITS SECOND POSITION UNDER THE BIAS OF THE FIRST MENTIONED SPRING, MOVEMENT OF SAID STOP TO ITS SECOND POSITION PLACING IT IN THE PATH OF MOVEMENT OF SAID SECOND ABUTMENT, WHEREBY SAID STOP ENGAGES SAID SECOND ABUTMENT TO THEREBY DEFINE THE SECOND POSITION OF SAID INDICATOR BY LIMITING MOVEMENT OF THE LATTER.