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- Telegraph Register, 1880-1920 - This telegraph register printed incoming Morse code signals onto a strip of paper. Electrical signals interacted with electromagnets, which in turn pulled a metal arm fitted with a stylus to create dashes and dots on the paper tape feeding off of the upper reel. Depending on the register model, marks were made either by embossment, or by ink.
- 1880-1920
- Collections - Artifact
Telegraph Register, 1880-1920
This telegraph register printed incoming Morse code signals onto a strip of paper. Electrical signals interacted with electromagnets, which in turn pulled a metal arm fitted with a stylus to create dashes and dots on the paper tape feeding off of the upper reel. Depending on the register model, marks were made either by embossment, or by ink.
- Telegraph Recording Receiver, Used by the Chicago Fire Department, circa 1890 -
- circa 1890
- Collections - Artifact
Telegraph Recording Receiver, Used by the Chicago Fire Department, circa 1890
- Photosensitive Paper Tape on Reel, circa 1920 -
- circa 1920
- Collections - Artifact
Photosensitive Paper Tape on Reel, circa 1920