GEC K7915

This page consists of two different models with the same GEC catalogue number

K7915

INTERCOMMUNICATION TELEPHONE
Central Battery Wall Telephone
"The Combat"

Consisting a Hand Microtelephone with Battery Key in Ebonite. Circular Call Bell  with 3 inch Gong, Ringing Key, Induction and Impedance Coils, Step by Step improved Line Line Selector and Suspension Hook. The Line Terminals are concealed at the back of the instrument.

Woodwork of solid well seasoned Walnut and all exterior parts Nickel plated and Gold lacquered

The advantage of these instruments over other forms is that only one set of batteries is required for a complete installation, instead of separate batteries for each instrument as ordinarily used.

Available with 5 lines, 10 lines or 15 lines.

Taken from the GEC Telephone Catalogue, K Section, 10th Edition, 1908

K7915

IRON CASED AND WEATHERPROOF
TRADESMAN'S BATTERY CALL TELEPHONES
WITH INDUCTION COIL
SPECIALLY DESIGNED FOR FLATS

The Tradesman's Battery Call 'Service' Telephone is designed primarily for the convenience of occupiers of large modern blocks of fiats, who frequently suffer annoyance from tradesmen's representatives calling from door to door to solicit or deliver orders.  This trouble can easily be overcome by the use of the Battery Call Service Telephone System here described.

Made in cast iron case, the K7915 is weatherproof and can be fixed near the service or in any other convenient position either in or outside the building. Simple to operate and efficient in its service, this system not only prevents the annoyance referred to above, but is noiseless and a time saver.

The receiver, which is fitted into an iron case attached to a flexible metal tube, when raised to the ear automatically connects the speaking battery to the transmitter, the latter is mounted on the back of the front plate and indicated by the perforated disc, into which the caller should speak.

A conversation having been finished, the receiver automatically returns to its normal position and cuts off the battery current.

The necessary wiring is simple, as only one wire from each flat to the K7915 is necessary, and two common wires throughout from the central battery of three to four cells.

Taken from the 1926 GEC catalogue and also found in the 1932 catalogue

Last revised: February 01, 2011