A new linear oscillating motor

The paper describes the performance of a simple motor which produces directly a linear oscillatory motion. The amplitude range is of the order of 5¿50 cm, and at an amplitude of 25 cm, frequencies of 10¿12 c/s have been achieved. The moving member is a conducting metal ring sliding over a laminated bar of iron. The coils are at both ends at a distance apart greater than the oscillatory amplitude. The motor is operated from a single-phase 50 c/s supply. An analysis of the induction mechanism is attempted and several practical machines are described.