This is just the beginning! Our collection holds over 300 years of history, including rare newspapers, obituaries, marriage records, birth records, and so much more—most of which you won’t find anywhere else!
Treatment of Mainsprings and Wireless Telegraphy
An article discusses mainspring care noting inexperienced workers pull springs causing breaks. acid in oil weakens coils and can ruin entire mainspring. It also reports on stenotelegraphy as a European interest where sounds replace letters in telegraphy, claiming faster, cheaper transmission.
MENTIONED IN THIS ARTICLE
Europe
Happy iX
Teopank
Che Hvas
Leopants
Zoological Gardens
London
Florida
Consistacc of C
Philadelphia
North America