Time controlled switching arrangement for two timer radio receiver

A radio receiver comprising:

• a. a first tuner for receiving a plurality of broadcasting signals and for tuning in a desired broadcasting signal;
• b. a preset tuner for tuning in a predetermined broadcasting signal;
• c. switch means for selecting the output signal derived from one of said tuners, said switch means normally being connected to said first tuner so as to derive the output signal of said first tuner;
• d. an amplifier connected to said switch means for amplifying an output signal passing through said switch means;
• e. a timing means;
• and
• f. control means for connecting said switch means to said preset tuner for a predetermined period of time as determined by said timing means, after disconnecting said first tuner.

A radio receiver comprising:

• a. first and second tuners;
• b. an output amplifier;
• c. a first manual ON-OFF switch;
• d. a timer;
• e. second and third ON-OFF switches which are controlled by said timer in ganged relationship to be reverse with respect to each other;
• f. a fourth change-over switch having two fixed contacts and a movable contact;
• g. a timing means;
• h. control means for holding the switched state of said fourth switch for a predetermined period of time as determined by said timing means and thereafter returning the same;
• i. means for connecting the output side of said first tuner through a parallel circuit of said first and second switches to one of said fixed contacts of said fourth switch;
• j. means for connecting the output side of said second tuner through said third switch to the other fixed contact of said fourth switch;
• and
• k. means for supplying an output signal at said movable contact of said fourth switch to said output amplifier circuit, said movable contact of said fourth switch being normally biased against said one fixed contact and to said other fixed contact for a predetermined period of time after it has been moved against said other fixed contact.