US Patent: 501,683
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| Gaining-machine
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Patentees:
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| Carl A. Johnson (exact or similar names) - Rockford, IL |
| Frank Johnson (exact or similar names) - Rockford, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 01, 1893 |
| Granted: |
Jul. 18, 1893 |
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Jeff Joslin
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Description: |
| "The object of this invention is to cut the recess or gain in which the leaf of the hinge is seated... This invention consists of a knife having a vertical movement and a combined knife and sawing having a horizontal movement of the combined knife and saw during the cutting process, a stop limiting the depth of the cut, and a system of clamps for holding the woodwork in proper position to be operated upon." |
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