US Patent: 218,844
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| Improvement in mechanical movements
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Patentee:
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| Ambrose Webster (exact or similar names) - Waltham, MA |
| USPTO Classifications: |
| 74/45 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 21, 1879 |
| Granted: |
Aug. 26, 1879 |
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Jeff Joslin
Vintage Machinery entry for American Watch Tool Co.
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Description: |
| This mechanism provides a pair of arms that reciprocate through the arc of a circle, and move at a varying rate. The specification does not give any hints as to what this mechanism is for, but given the inventor's connection with what would become the American Watch Tool Co., it seems likely that it was invented for use in watches and clocks. |
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