Self-regulating transformer

Claim 1

IN COMBINATION, AN ELECTRICAL TRANSFORMER HAVING TAPS IN THE PRIMARY WINDING, A TAP CHANGER INCLUDING STATIONARY CONTACTS CONNECTED TO SAID TAPS, ROTATABLE CONTACT MEANS ADAPTED WHEN ROTATED TO SEQUENTIALLY ENGAGE SAID STATIONARY CONTACTS AND TO CHANGE THE RATIO OF TRANSFORMATION OF SAID TRANSFORMER, A ROTATABLE SHAFT, MEANS INCLUDING A SPRING OPERATIVELY CONNECTED AT ONE END TO SAID SHAFT AND AT THE OTHER END TO SAID ROTATABLE CONTACT MEANS FOR STEPPING SAID ROTATABLE CONTACT MEANS TO A SUCCEEDING TAP POSITION AND OPPOSING ROTATION OF SAID SHAFT WITH A FORCE PROPORTIONAL TO THE ANGULAR ROTATION THEREOF; SAID SHAFT BEING ROTATED THROUGH A FIRST PREDETERMINED ANGLE BETWEEN TAP POSITIONS; A WORK CYLINDER, A PISTON RECIPROCABLE WITHIN SAID WORK CYLINDER, MEANS FOR CONVERTING DISPLACEMENT OF SAID PISTON INTO ROTATION OF SAID SHAFT, AN ELECTROMAGNETIC VIBRATORY PUMP HAVING A POLE STRUCTURE AND AN ENERGIZING WINDING ON SAID POLE STRUCTURE ENERGIZED FROM THE SECONDARY OF SAID TRANSFORMER AND BEING RESPONSIVE TO THE CYCLIC FLUCTUATIONS OF THE ALTERNATING CURRENT FOR PUMPING LIQUID, SAID PUMP INCLUDING VALVE MEANS MAGNETICALLY SUSPENDED IN SAID POLE STRUCTURE IN A MEAN POSITION DETERMINED BY THE STRENGTH OF THE MAGNETIC FLUX IN SAID POLE STRUCTURE FOR SELECTIVELY DELIVERING FLUID FROM SAID PUMP INTO EITHER END OF SAID WORK CYLINDER IN ACCORDANCE WITH SAID MEAN POSITION, AND FEEDBACK COMPENSATING MEANS FOR VARYING THE POSITION OF SAID VALVE MEANS IN ACCORDANCE WITH THE ANGULAR ROTATION OF SAID SHAFT, THE RATE AT WHICH THE POSITION OF THE VALVE MEANS IS CHANGED BY SAID FEEDBACK MEANS INCIDENT TO ROTATION OF SAID SHAFT BEING SUBSTANTIALLY EQUAL TO THE RATE AT WHICH THE POSITION OF SAID VALVE MEANS IS CHANGED BY THE MAGNETIC FLUX AS A RESULT OF VARIATION IN TRANSFORMER SECONDARY VOLTAGE, AND MEANS FOR DISABLING SAID FEEDBACK MEANS AFTER ROTATION OF SAID SHAFT IN EITHER DIRECTION THROUGH A SECOND PREDETERMINED ANGLE, SAID GREATER THAN ONE HALF SAID FIRST PREDETERMINED ANGLE, SAID DISABLING MEANS BEING ADJUSTABLE TO VARY SAID SECOND PREDETERMINED ANGLE.