Cam operated apparatus

Cam operated apparatus comprising a cam track and cam follower means, wherein the cam track and cam follower means are engaged with one another, and the apparatus further comprises at least one head element operatively connected to one of the at least one cam track and the at least one cam follower means, and at least one rotational drive means operatively connected to the other of the at least one cam track and the at least one cam follower means, such that rotational drive causes reciprocal action of the head element and wherein a width of the at least one cam track is greater than a width of the at least one cam follower means;

• the cam follower means has two degrees of motion, a first degree of motion defined by the cam track, and a second degree of motion defined by ricochet between opposing walls of the cam track, the first degree of motion causing a substantially longitudinally throw of the head element providing a pitch of the apparatus and the second degree of motion creating a harmonic effect on the head element and characterised in that:
• the apparatus further comprise an adjustment mechanism, the adjustment mechanism configured to selectively change the width of the cam track so as to tune the apparatus to the harmonic.