Transducer with adjustable armature yoke and method of adjustment

Abstract From the Canadian patent

An electromechanical magnetic transducer with a moving armature that is adjustable relative to the working gap. The armature comprises an armature leg, crosspiece and yoke arms, the adjustment being accomplished by inelastic distortion of the yoke arms. Substantially translational movement of the intrinsic position of the armature leg during adjustment is achieved by providing in each yoke arm one or more struts that undergo Sshaped distortion upon application of adjusting forces in appropriate directions. The structures are further adaptable for rotational adjustment of the armature leg in the gap.