(under subclass 47) Subject matter in which the switching means used to vary or change the frequency setting or band of frequencies to which the tuner is resonant is operated by the adjustment or movement of a variable tuning means such as a variable capacitor.
(1) Note. An example of the type of tuner found in this subclass is one in which a variable capacitor, adapted to rotate through 360 deg., is used to fine tune or spread a given frequency to which the tuner is resonant with special switching means being associated with the capacitor to thereby switch into the tuned circuit various other tuning elements each time the capacitor is rotated through one complete revolution and thus change the band of frequencies to which the tuner is resonant.
SEE OR SEARCH THIS CLASS, SUBCLASS:
65+, for tuners in general wherein both inductor and capacitor are variable.
