Thomson (Mirror) Galvanometer – *WIP*

This research is in the document and information gathering stage

Transatlantic telegraph. William Thomson's (Lord Kelvin 1824-1907) receiving apparatus used at Brest, including his mirror galvanometer (left), an instrument for measuring small electric currents Wood engraving 1877
Transatlantic telegraph. William Thomson's (Lord Kelvin 1824-1907) receiving apparatus used at Brest, including his mirror galvanometer (left), an instrument for measuring small electric currents Wood engraving 1877

The patent we are looking at: (English/UK) Patent Number 329, 1858 February 20th "Thomson's Improvements in Testing and Working Electric Telegraphs"

Physical copy: http://special.lib.gla.ac.uk/manuscripts/search/detail_c.cfm?ID=94776

Best online source so far: "English Patents of Inventions, Specifications, 1858, 317 - 399" Page 62 (in the PDF) https://books.google.ca/books?id=uOJg2EbSJ5EC&lpg=RA38-PA1&ots=Btc_iV27DI&dq=English%20Patents%20of%20Inventions%2C%20Specifications%2C%201858%2C%20317%20-%20399&pg=RA5-PA1#v=onepage&q&f=false

Drawings for patent UK 329 1858
Drawings for patent UK 329 1858 (13MB PNG Warning!)

Mention in "The life of William Thomson, baron Kelvin of Largs" Vol. 1, page 381 https://archive.org/details/lifeofwillthom01thomrich/page/n381

Leave a Reply

Your email address will not be published. Required fields are marked *