US Patent: 70,051
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| Improvement in mortising-machines
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Patentee:
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| Charles R. Tompkins (exact or similar names) - Rochester, NY |
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Patent Dates:
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| Granted: |
Oct. 22, 1867 |
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Jeff Joslin
Vintage Machinery entry for Charles R. Tompkins
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Description: |
| "This invention relates to that class of mortising machines having an automatically reversing chisel-stock; and it nature consists in the employment of such an arrangement of devices as will cause the chisel-stock to retain a fixed position upon its axis until the chisel is entirely withdrawn from the timber, when it will be reversed by the extreme downward movement of the table." |
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