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Bog, hæftet The Electric Journal, Vol. 14: January-December, 1917 (Classic Reprint) af Pittsburgh Electric Club

The Electric Journal, Vol. 14: January-December, 1917 (Classic Reprint)

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Excerpt from The Electric Journal, Vol. 14: January-December, 1917

Figs. 1, 2 and 3 - typical post designs Showing reverse scroll bracket (fig I), bishop crook (fig. And mast-arm (fig 3) posts, all equipped with Mazda C lamps.

In 1859 there were 13 500 street lamps i... Læs mere

Excerpt from The Electric Journal, Vol. 14: January-December, 1917

Figs. 1, 2 and 3 - typical post designs Showing reverse scroll bracket (fi... Læs mere

Produktdetaljer:

Sprog:
Engelsk
ISBN-13:
9781333923303
Sideantal:
560
Udgivet:
01-10-2016
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Forlagets beskrivelse
Excerpt from The Electric Journal, Vol. 14: January-December, 1917

Figs. 1, 2 and 3 - typical post designs Showing reverse scroll bracket (fig I), bishop crook (fig. And mast-arm (fig 3) posts, all equipped with Mazda C lamps.

In 1859 there were 13 500 street lamps in service, all burning gas, except a limited number of oil lamps. Sev eral other companies were organized in various sections of the city, and in 1873 there were 18000 gas street lamps in service; in 1879 the gas street lamps numbered 21 000. In 1877 approximately 2000 naphtha lamps were placed in service, but their use continued for street lighting only as long as the gas was not available, and in 1880 they were restricted to the lighting in parks and parkways. For this latter type of installation they were the accepted type of lighting unit until 1908, at which time their replacement by electric units began and has continued until the present time, when they are prae tically all eliminated.

About the Publisher

Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com

This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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