Electronic tremolo device

Claim 1

IN COMBINATION; AN ELETRICAL MUSICAL INSTRUMENT HAVING AN OUTPUT TRANSFORMER WITH TERMNALS, A PLURALITY OF SPEAKERS CONNECTED TO SAID TERMINALS TO RECEIVE THE OUTPUT FROM SAID TRANSFORMER AND CONVERT IT INTO SOUND, AN IMPEDANCE IN CIRCUIT WITH EACH SPEAKER, EACH IMPEDANCE COMPRISING A TRANSFORMER HAVING A PRIMARY COIL IN SERIES WITH THE SPEAKER AND HAVING A SECONDARY COIL, A RESISTANCE ELEMENT CONNECTED IN PARALLEL WITH EACH SAID SECONDARY COIL, EACH RESISTANCE ELEMENT COMPRISING ALIGHT SENSTIVE RESISTANCE CELL, A SOURCE OF ILLUMINATION ADJACENT EACH CELL, MEANS FOR VARYING THE INTENSITY OF EACH SAID SOURCE OF ILLUMINATION, SAID CELLS AND THEIR PERTAINING SOURCES BEING DISTRIBUTED CIRCUMFERENTIALLY ABOUT A PREDETERMINED AXIS, DISC MEANS INTERPOSED BETWEEEN SAID SOURCES OF ILLUMINATION AND THEIR PERTAAINING CELLS AND ROTATABLE ON SAID AXIS AND CIRCUMFERENTIALLY SPACED APERTURES IN SAID DISC MEANS ADAPTED SUCCESSIVELY TO REGISTER WITH EACH SAID SOURCE AND ITS PERTAINING CELL DURING ROTATION OF SAID DISC MEANS THEREBY TO BRING ABOUT PERIODIC ILLUMINATION OF EACH CELL BY ITS PERTAINING SOURCE FOR ILLUMINATION, SAIDMEANS FOR DRIVING SAID DISC MEANS COMPRISING A VARIABLE SPEED DRIVE MOTOR DRIVINGLY CONNECTED WITH SAID DISC MEANS.