Voltage control for battery powered motor or the like

A control circuit for use in connecting all or either half of a battery supply to a battery driven motor, including:

• relay means connected between a motor and each half of a battery supply,
• a timer with two output conditions, including a counter, memory and power supply, with the output of the timer changing from one output condition to the other at the end of each time period determined by a predetermined accumulated count in the memory,
• a motor speed selector for selecting high speed or low speed,
• switch means interconnecting said relay means, timer and motor speed selector whereby:
• said relay means are operable in a first position to connect one half of the battery supply to the motor when the selector is in a low speed position and with
• said timer having said one output condition;
• said relay means are operable in a second position to connect the other half of the battery supply to the motor when the selector is in a low speed position and with the timer having the other of its two output conditions;
• said relay means are operable in a third position to connect the full battery supply to the motor when said selector is in a full speed position.