Engraving depicting William Edward Ayrtons electric tricycle. 10 charged Faure accumulators were placed on footboard S) and the motor fitted under the seat. By means of a commutator; C); worked with the left hand; the number of accumulators used could be altered; thus varying the speed of the machine. William Edward Ayrton (1847-1908) an English physicist and electrical engineer. Dated 19th century.