Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 187
f temperatureand inclemencyof weather. Thislatter featurehasbeen gained bycareful attentionto the design ofthe exterior case,and is particu-larly importantin lamps in-tended for con-tinuous outsideterviee. The con-srol of the gasand air regula-tion by meansof a loose 1^< y is a speciaUty of this… … Contracts for Metal Filament Lamps. Messrs. Siemens Bros. Dynamo Works,Ltd. (Tyssen Street. Dalsttiii. London.X.E.), inform us that tliey liave ol)tainedcontracts for tlie supply of TantalumTraction Lamps to tlie Great EasternRailway, the Aberdeen White Star Line,the Allan Line, and the London…
Lighting
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