Tuner driving mechanism permitting play in location of input member

In a tuner comprising an electrical tuning system having a movable control member, a support, means for mounting said tuning system on said support in a given position, a rotatable input member, and an operative driving connection between said control member and said input member;

• the improvement which comprises first gear means drivingly connected to said control member and mounted on said support to be rotatable about a first and fixed axis, second gear means mounted on said support to be adjustably positionable about the periphery of said first gear means, third gear means mounted to be adjustably positionable about the periphery of said second gear means, means defining a rotatable driving connection from said first gear means through said second gear means to said third gear means, and means operatively connecting said input member and said third gear means for driving connection and fixed relative positioning therebetween, whereby said input member may be located relative to said control member in one of a plurality of positions, said second gear means comprising first and second coaxially mounted and simultaneously rotatable gears, said first gear meshing with said first gear means and said second gear meshing with said third gear means, and means for resiliently urging one of said gear means against the periphery of another of said gear means.