TELEPHONE

TELEPHONY

Revendications

Claim lst In a telephone circuit, the interposition of a converter having two independent coils wound upon layers of magnetically insulated blanks, and the terminals of one coil connected with the local or primary circuit, and the terminals of the other coil with the line circuit. 2nd A converter composed of H-shaped pieces of sheet metal, magnetically insulated and placed and held together, and the central part wound with two independent coils of wire, each having its own pair of terminals, substantially as set forth. 3rd A converter composed of H-shaped and plain end pieces of sheet metal, magnetically insulated and placed and held together, and the central part between the heads wound with two independent coils of wire, each having its own pair of terminals. 4th In a converter, the combination of the H-shaped levers or blanks C1, magnetically insulated and placed and held together, the coil l corresponding to the primary or local telephone circuit, and having a pair of terminals, a coil l1 corresponding to the line circuit and having its own pair of terminals, substantially as set forth. 5th In a converter, the combination of the H-shaped leaves or blanks Cl,the plain strips C11 corresponding to the heads of the blanks C1,both of sheet metal magnetically insulated and placed and held together, a coil 1 of thick wire,having its own pair of terminals, a coil l1. of fine wire over the coil 1, and having its own terminals, substantially as set forth. 6th In a converter, the combination of a series of thin H-shaped metallic leaves C., a series of plain strips C11, both magnetically insulated and placed and held together, a coil of thick wire I having its own terminals, a coil of fine wire ls, having its own terminals, the binding posts c1, c11, the straps c11, holding the bobbin c1, 52, 1, I1, to the base, and the base C111, substantially as set forth. 7th In a telephone system, the combination of a transmitter T, batter B, receiver R primary circuit L, connecting T, B and R, and passing in coils 1 over a series of H-shaped plates C. and plain ends C11, composed of sheet metalland magnetically insulated and placed and held together, line wire L. passing to earth and passing in coils f1 over the coils 1, substantially as set forth. 8th In a telephone system, the combina¬tion of the primary or local circuit L containing transmitter, battery and receiver, and connected to the terminals of a coil in a converter C, the line circuit L. connected to the terminals of another coil of the same converter, and the converter C containing said independent coils wound upon a series of H-shaped plates and plain strips of sheet metal, magnetically insulated and placed and held together, substantially as set forth