GEC K 40 & K 41

K 40

BATTERY WALL TELEPHONES

This well-known instrument ranks as a pioneer of Battery Ringing Telephones, having made its advent very shortly after the expiration of the Telephone patents. It still maintains its position as the most satisfactory Battery Call Telephone Set at a moderate price, it consists of the following parts: "Hunningscone-Deckert" Microphone, Induction Coil, Double Pole 'Watch' Receiver. Call Bell, Ringing Key. and Automatic Switch Hook, mounted in solid Walnut Case, with all metal parts Nickel-plated. Can be used very satisfactorily on lines up to half a mile in length.

Price in 1904 - £1.5.0.

K 41
The same construction as K 40, but with 'Bell' instead of 'Watch' Receiver.

Price in 1904 - £1.8.0.

Described as a Midland Railway type in an annotation found in a copy of the Peel Conner Illustrated Telephone Catalogue, 9th edition, belonging to the cabinet works.

Taken from the G.E.C. Illustrated Telephone Catalogue 9th edition (1904)

Wiring two Telephones together

Each telephone requires three 1.5 volt batteries.  The phones are connected together by two wires.

At each telephone connect the batteries as follows:-

1. Connect the three batteries in series.
2. Connect the free negative terminal of the battery set to terminal ZE on the phone.
3. Connect the free positive terminal of the battery set to terminal C on the phone.
4. Connect the positive terminal of the centre battery to terminal MC on the phone.

Connect the two phones as follows:-

1.  Connect terminal ZE of one phone to terminal ZE of the other.
2. Connect terminal L of one phone to terminal L of the other.

Last revised: October 06, 2018