Lámparas eléctricas para minas.
[Spain]: [Wolf Safety Lamp Co.], [ca. 1928]. Paperback. 79 pp., illustrations, printed wraps. 9.5 x 6.25 in. Head of spine bumped. Sheet with specifications for a lamp (Model No. 950) laid in, with some chipping to the left margin.
Catalog for alkaline battery-powered lamps used in mines. Alkaline lamps were developed in the late 1920s and prone to leaking battery fluid, but were a vast improvement on flame-based mining lamps. The introductory statement notes the safety benefits and improved worker efficiency that comes with a less volatile, portable light source and suggests that, at press time, butane lamps had been superseded by electric ones. The Wolf Safety Lamp Company was established in Leeds in 1880.
Cat.No: 297459
Price: $125.00