Pulse supplying device employing variable-oscillator and presettable counter for controlling speed and direction of motor

Claim 1

A PULSE PRODUCING DEVICE FOR SUPPLYING A SELECTED NUMBER OF PULSES PER CYCLE OF OPERATION FOR CONTROLLING THE EXTENT AND DIRECTION OF MOVEMENT OF A STEPPING MOTOR COMPRISING OUTPUT TERMINALS AT WHICH THE PULSES APPEAR AND INCLUDING A FIRST CHANNEL AND A SECOND CHANNEL, SWITCH MEANS FOR CONTROLLING THE APPEARANCE OF THE PULSES ON ONE OR THE OTHER CHANNELS THEREBY CONTROLLING THE DIRECTION OF MOVEMENT OF SAID MOTOR; OSCILLATOR MEANS FOR PRODUCING INDIVIDUAL PULSES AND INCLUDING MEANS FOR ADJUSTING THE FREQUENCY OF THE PULSES TO THEREBY VARY THE SPEED OF THE MOTOR AND INCLUDING MEANS INTERCONNECTING THE OSCILLATOR MEANS TO THE OUTPUT TERMINALS TO HAVE THE PULSES APPEAR AT THE OUTPUT TERMINALS; CONTROL MEANS INTERCONNECTED WITH THE OSCILLATOR MEANS AND HAVING A FIRST STATE WHICH PERMITS PULSES TO APPEAR AT THE OUTPUT TERMINALS AND A SECOND STATE FOR PREVENTING PULSES FROM APPEARING AT THE OUTPUT TERMINALS; COUNTING MEANS CONNECTED TO RECEIVE THE OUTPUT PULSES AND HAVING A PLURALITY OF CONDITIONS, ONE FOR EACH PULSE SUPPLIED DURING THE CYCLE; PULSE NUMBER SELECTING MEANS HAVING A PLURALITY OF POSITIONS, ONE FOR EACH CONDITION OF THE COUNTING MEANS, CONNECTED TO THE CONTROL MEANS AND THE COUNTING MEANS AND HAVING MEANS FOR SELECTING ONE OF THE POSITIONS, SAID SELECTING MEANS BECOMING ACTUATED WHEN THE ONE CONDITION OF THE COUNTING MEANS CORRESPONDS TO THE ONE SELECTED POSITION OF THE SELECTING MEANS; AND CONNECTIONS BETWEEN THE SELECTING MEANS AND THE CONTROL MEANS FOR CAUSING ACTUATION OF THE SELECTING MEANS TO EFFECT A CHANGE OF STATE OF THE CONTROL MEANS TO ITS SECOND STATE TO THEREBY TERMINATE THE CYCLE BY PREVENTING FURTHER PULSES FROM APPEARING AT THE OUTPUT TERMINALS.