US Patent: 450,978
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| Work-centering apparatus
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Patentee:
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| John Rogers (exact or similar names) - North Adams, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 28, 1890 |
| Granted: |
Apr. 21, 1891 |
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Jeff Joslin
Vintage Machinery entry for J. Hunter & Co.
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Description: |
| "This invention relates to apparatus for centering and truing the center of pieces of work, and is especially adapted, among other things, to be used in finding the center and truing the center of shafts, spindles, gudgeon, and other cylindrical objects." |
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