Continuous vibration monitor device

Claim 1

A COMPACT VIBRATION MONITOR FOR CONTINUOUSLY OBSERVING MECHANICAL VIBRATIONS OF ROTATING MACHINERY COMPRISING: A PAIR OF INPUT TERMINALS; VOLTAGE GENERATING MEANS ADAPTED TO GENERATE AT SAID INPUT TERMINALS AN OSCILLATORY INPUT SIGNAL CORRESPONDING IN AMPLITUDE TO THE AMPLITUDE OF THE SAID MECHANICAL VIBRATIONS; A FIRST SIGNAL LAMP BEING NORMALLY EXTINGUISHED AND A SECOND SIGNAL LAMP BEING NORMALLY IGNITED; A PAIR OF SIGNAL CHANNELS CONNECTED BETWEEN SAID INPUT TERMINALS AND THE RESPECTIVE FIRST AND SECOND SIGNAL LAMPS; THE SIGNAL CHANNEL CONNECTED BETWEEN SAID INPUT TERMINALS AND THE SAID FIRST SIGNAL LAMP INCLUDING (A) CIRCUIT MEANS RESP ONSIVE TO THE SAID INPUT VOLTAGE FOR CONTINUOUSLY COMPARING THE SAID INPUT VOLTAGE WITH A FIRST COMPARISON VOLTAGE; (B) CIRCUIT MEANS RESPONSIVE TO SAID INPUT VOLTAGE IN EXCESS OF SAID FIRST COMPARISON VOLTAGE FOR IGNITING SAID FIRST SIGNAL LAMP FOR A PREDETERMINED PERIOD OF IGNITION; AND (C) CIRCUIT MEANS FOR EXTINGUISHING SAID FIRST SIGNAL LAMP AFTER IT HAS BEEN IGNITED FOR THE SAID PERIOD OF IGNITION; THE OTHER OF SAID SIGNAL CHANNELS INCLUDING MEANS FOR RECTIFYING THE SAID OSCILLATORY INPUT SIGNAL; A CAPACITOR CHARGED BY CURRENT PASSING THROUGH SAID RECTIFYING MEANS; A NORMALLY NON-CONDUCTING UNIJUNCTION TRANSISTOR COUPLED TO SAID CAPACITOR; MEANS FOR CAUSING SAID UNIJUNCTION TRANSISTOR TO PRODUCE AN OSCILLATORY OUTPUT SIGNAL WHEN THE VOLTAGE FALLS BELOW A PREDETERMINED MAGNITUDE; A NORMALLY ENERGIZED SIGNAL LAMP; AND MEANS INCLUDING A SILICON-CONTROLLED RECTIFIER COUPLED TO THE UNIJUNCTION TRANSISTOR FOR PERIODICALLY DEENERGIZING SAID SIGNAL LAMP WHEN OSCILLATIONS ARE PRODUCED BY THE UNIJUNCTION TRANSISTOR.