STERLING TELEPHONE AND ELECTRIC Co. Ltd


WATERTIGHT BATTERY RINGING MINING TELEPHONE

No. U 565

Battery Ringing Mining Telephone in Water­tight Iron Case with hinged front, and comprising:
Capsule Inset Shot Carbon Transmitter, Induction Coil, large pattern powerful Double Pole Receiver, Hand Ringing and Speaking Switch, substantial Connecting Terminals and Stuffing Gland for leading-in.

Note: This Telephone complies with Home Office requirements.


 

LONG-DISTANCE WATERTIGHT BATTERY RINGING MINING SET

No. U 565a

Long Distance Battery Ringing Mining Set, comprising:
Telephone No. U 566 as above, mounted on Painted Oak Backboard, with best quality Waterproof Relay No. S 6161 (40 ohms) and Gas and Watertight Diaphragm Bell, No. S 6007a, fitted with 6 in. Bell-metal Gong.

This set is recommended for use over distances exceeding 300 yards.

Relays of higher resistances for long Distances can be fitted if required.

NOTE: If the above is required for use as a Signalling Instrument and also to answer as a Receiving Station for Portable Telephone No. U 571 , mention of this must he made on the order.

Note: This Telephone complies with Home Office requirements.


 
 
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Last revised: April 28, 2021

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STERLING TELEPHONE AND ELECTRIC Co. Ltd


 

 

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Last revised: April 28, 2021