Patent Model - Improvement in Self-Adjusting Telegraphic Relays
Maker and role
Lewis Reynolds, Patentee
Production date
Sep 29 1868
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Object detail
Media/Materials
Wood, copper. iron
Measurements
3 1/2 x 6 x 3 1/2" (8.9 x 15.2 x 8.9cm)
Description
Reynolds's patent improvements include the "double electro-magnet, or two electro-magnets, placed in a helix or helices, with their like poles near each other, and attachment to armature or armature-bar of common relay, so that their repulsion will counteract, or nearly counteract, the attraction of armature of common relay to its own magnet." (Patent Number 82,639)
Collection
Object number
2015.14.920
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Maker
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