Magnetically controlled rotating ball indicating device

Claim 1

AN ELECTROMAGNETIC INDICATOR FOR INDICATING THE PRESENCE OF EITHER A FIRST CONDITION OR A SECOND CONDITION IN AN OPERATIONAL SYSTEM COMPRISING IN COMBINATION: A HOUSING; ROTATABLE MEANS PIVOTALLY MOUNTED IN A TRANSPARENT PORTION OF THE HOUSING BETWEEN TWO PIVOT POINTS ON A TRANSVERSE AXIS OF SAID HOUSING AND ROTATABLE BETWEEN A FIRST POSITION WHICH IS INDICATIVE OF THE FIRST CONDITION PRESENT IN THE SYSTEM AND A SECOND POSITIION WHICH IS INDICATIVE OF THE SECOND CONDITION PRESENT IN THE SYSTEM; A FIRST PERMANENT BAR MAGNET FIXEDLY SECURED WITHIN SAID ROTATABLE MEANS EQUIDISTANT FROM THE TWO PIVOT POINTS, THE LONGITUDINAL AXIS OF THE MAGNET BEING PERPENDICULAR TO SAID TRANSVERSE AXIS; AN ELECTROMAGNET, CONSISTING OF A COIL AND A CORE, THE ELECTROMAGNET BEING AXIALLY DISPLACED FROM SAID TRANSVERSE AXIS INTERIORLY OF SAID HOUSING, WHEREIN THE PLANE DEVELOPED BY THE LOCUS OF ROTATION OF THE LONGITUDINAL AXIS OF SAID FIRST PERMANENT BAR MAGNET UNDERLIES AND IS PARALLEL TO A HORIZONTAL PLANE THROUGH THE LONGITUDINAL AXIS OF THE CORE OF THE ELECTROMAGNET; A SECOND PERMANENT MAGNET ENCLOSED WITHIN THE COIL OF SAID ELECTROMAGNET AND INSULATED THEREFROM, A HORIZONTAL PLANE THROUGH THE LONGITUDINAL AXIS OF WHICH IS PARALLEL TO AND UNDERLIES THE PLANE DEVELOPED BY SAID LOCUS; STOP MEANS CONSISTING OF A PROMONTORY ON SAID ROTATABLE MEANS AND A COOPERATING RAISED PORTION ON SAID HOUSING ADAPTED TO PREVENT THE LONGITUDINAL AXIS OF SAID FIRST PERMANENT BAR MAGNET FROM ALIGNING ITSELF PARALLEL TO THE LONGITUDINAL AXIS OF THE CORE.