Patent Model - Improvement in Relays for Telegraphic Instruments
Maker and role
Edward Hidden (b.1828, d.1911), Patentee
Production date
Feb 15 1870
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Object detail
Media/Materials
Brass, lead, wood
Measurements
10 1/4 x 9 x 6" (26 x 22.9 x 15.2cm)
Description
Edward Hidden’s patent was for “new and useful Improvements in Relays, as they're sometime termed, being instruments which break and make electro-magnetic circuits, when another electro-magnetic circuit is broken or closed.” (Patent #99,892)
Collection
Object number
61.47.848
Currently on display?
Maker
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