The practical electric telegraph

Tür:

Kitap Bölümü

Yayın yılı:

2001

Yayıncı:

Institution of Engineering and Technology

Dil:

en

The demonstrations at Euston in 1837 did not lead to an electric telegraph installation and the five-needle system used between Paddington and West Drayton which opened in July 1839 was not adopted anywhere else, but the partners obtained considerable experience in the practical problems of installing and maintaining a telegraph system. In 1838, W.F. Cooke obtained a patent in his own name with the same title as their joint patent of the previous year. In January 1840, Cooke and Wheatstone obtained another joint patent. This was concerned with their first ABC telegraphs, so called because the receiving instruments indicated actual letters of the alphabet instead of giving coded signals by deflecting one or more needles. The ABC telegraphs were partly Wheatstone's invention and partly Cooke's.

Künye/erişim: kaynak bağlantısı