Page:United States patent 668315.pdf/3

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668,315

circuit connected to the inner ends of the secondary.

2. In a receiver for electrical oscillations, the combination of an induction-coil the 105secondary of which is wound in two parts, an aerial conductor connected to one end of the primary, a capacity connected to the other end of the primary, a detector connected to the outer ends of the secondary, a condenser 110across the inner ends of the secondary, and a local circuit connected to the condenser.

3. In a receiver for electrical oscillations, the combination of an induction-coil the secondary of which is wound in two parts, an 115aerial conductor connected to one end of the primary, a capacity connected to the other end of the primary, a detector connected to the outer ends of the secondary, a local circuit connected to the inner ends of the secondary, and choking-coils between the local120 circuit and the inner ends of the secondary.

4. In a receiver for electrical oscillations, the combination of an induction-coil the secondary of which is wound in two parts, an aerial conductor connected to one end of the125 primary, a capacity connected to the other end of the primary, a detector connected to the outer ends of the secondary, a condenser across the inner ends of the secondary, a condenser circuit connected to the condenser, and 130choking-coils between the local circuit and the condenser.

Guglielmo Marconi.

Witnesses:
Edward Carpmael,
Wilfred Carpmael.



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