battery cap

Either remove the battery caps or look through the small “window” provided for this purpose.

During this period some 30 miners battery cap lamps were being used.

Electric battery cap lamps were introduced in mid 1952.

My battery cap looked a little different.

All battery cap lights were the "Edison" type.

Most of this is normally vented through the battery caps and can ignite if exposed to a spark or flame.

Such measures included providing an enclosure around the engine and providing battery caps for all units at all stations.

Like the other Maitland Extended Tunnels, the miners used battery cap lamps underground.

The Methanometer could be powered by an Edison battery cap lamp and it could be carried on a miner's belt with other tools.

Cessnock No. 1 (Kalingo) Colliery on 23rd October 1941 provided "Nife" brand battery cap lights, supplied by Masse Limited for all its underground employees.

Battery cap lights used by the Millfield North Colliery miners were returned daily to the Millfield Greta Colliery lamp cabin for charging.

LAMP CABIN: In the 1940's, when Whitburn Colliery resumed its mine working, it had introduced the miners' battery cap lamps.

As well as attending to the charging of the miners' battery cap lamps, he was required to clean the bath-house, besides firing and supervising the boiler, for heating the shower water. 12.

Later, Dallas Semiconductor made compatible RTCs, which were often used in older personal computers, and are easily found on motherboards because of their distinctive black battery cap and silkscreened logo.