US Patent: 1,753,590
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| Workholder for bar-grinding machines
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Patentee:
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| Frederic K. Benedict (exact or similar names) - Big Rapids, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 27, 1927 |
| Granted: |
Apr. 08, 1930 |
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Jeff Joslin
Vintage Machinery entry for Covel Mfg. Co.
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Description: |
| "A locomotive guide bar is a heavy piece of work quite wide and several feet long, and its working fact, on which the engine cross head is to slide, must be ground to a true plane and it must also be parallel with the faced pads or bearing surfaces that are provided on the back face of the bar near its ends..." |
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