Part of Morse's telegraph apparatus, US Patent # 4,453

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This telegraph receiver is associated with United States patent 4,453 granted April 11th, 1846 to Samuel Morse. The patent covered the use of a magnet in the telegraph receiver to amplify current from the battery and magnet connected to the main telegraph line. This enabled the telegraph to receive messages over longer lines. The patent also specified a combination of apparatuses to move and mark a paper roll in order to record the incoming message.
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Morse, Samuel Finley Breese
Morse, Samuel Finley Breese
Physical Description
wood (housing material)
iron wire (conductors material)
brass (parts material)
relay: 7 in x 11 1/4 in x 4 1/2 in; 17.78 cm x 28.575 cm x 11.43 cm
register: 8 in x 17 1/2 in x 4 in; 20.32 cm x 44.45 cm x 10.16 cm
tape reel: 9 1/4 in x 10 in x 1 1/4 in; 23.495 cm x 25.4 cm x 3.175 cm
coil disks (each): 1/8 in x 12 1/2 in; .3175 cm x 31.75 cm
key on base: 2 in x 2 3/4 in x 10 in; 5.08 cm x 6.985 cm x 25.4 cm
ID Number
catalog number
accession number
patent number
See more items in
Work and Industry: Electricity
Patent Models
American Stories exhibit
Invention and the Patent Model
Data Source
National Museum of American History


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