Patent Model - Improvements in Telegraphic Apparatus
Maker and role
Leverett Bradley (b.1798, d.1875), Patentee
Production date
Aug 28 1860
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Object detail
Media/Materials
Wood, brass, wire
Measurements
11 1/2 x 13 1/2 x 10" (29.2 x 34.3 x 25.4cm)
4 1/16lbs (1.85kg)
4 1/16lbs (1.85kg)
Description
"The objects of my improvements in electro-magnets are, to increase the power of the magnet and also its action on the armature without increasing the quality of helical wire; to give greater freedom and ease to the movement of the armature and to increase its capacity to make a greater number of contacts in a given time..." (Patent Number 29,761)
Collection
Object number
2015.14.340a,b
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Maker
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