Capa do livro de David Brooks (Inventor)
Título do livro:

David Brooks (Inventor)

Philadelphia, Telegraphy, Central Pacific Railroad

Culp Press (2011-10-24 )

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ISBN- 1 3:

978-613-8-00933-7

ISBN- 1 0:
6138009339
EAN:
9786138009337
Idioma do livro:
Inglês
Anotações e citações/ texto breve:
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. David Brooks was an Philadelphia, Pennsylvania inventor, remembered for an innovative insulator for telegraph lines in 1864 and 1867. He patented it while working for the Central Pacific Railroad. His patents allowed the railroad to more easily communicate with construction crews building the first transcontinental railroad in America. The insulator had a thick metal casing around blown glass; the assembly was held together with molten sulfur. Out of the tube extends a "ramshorn" rod that held the telegraph wires. It was mounted into holes drilled into the bottom of wooden crossarms attached to poles.
Editora:
Culp Press
Website:
http://www.alphascript-publishing.com
Editado por:
Nethanel Willy
Número de páginas:
84
Publicado em:
2011-10-24
Stock:
Disponível
Categoria:
Carros, aviões, navios, viagens espaciais
Preço:
34.00 €
Palavras chave:
David, Brooks, Station, Inventor, Railway, Davidson, Brookside, Stationenbetrieb, inventory, railways

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