Construction of preset plate for VHF tuner

In a preset plate for a VHF tuner, including a first rotary body and a second rotary body each adapted to be mounted on a shaft for rotation therewith, said first rotary body carrying a plurality of inductance coils each corresponding to a respective channel of the tuner and said second rotary body carrying a plurality of screws each aligned with a respective inductance coil and adapted to be positioned within its respective coil to vary the inductance thereof for providing a fine tuning of the selected channel, and means for switching between inductance coils, said switching means including contact pieces connected electrically to respective coils and carried by said first rotary body for rotation into engagement with contact portions of at least one fixed contact member;

• the improvement comprising said contact pieces each being embedded within said first rotary body and extending radially outwards therefrom to a free end portion, said second rotary body having an outer portion spaced radially outwards from said first rotary body, said outer portion having recessed seat portions and projecting portions between adjacent seat portions, said free end portions each lying against a respective seat portion whereby during rotation of said first and second rotary body members, said projecting portions will lift each said contact member by a camming action to disengage the contact portion thereof from said contact pieces and said first rotary body, and return each said contact portions to said contact pieces with little bounce therebetween.