US Patent: 1,813,002
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| Indicator
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Patentee:
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| John J. N. Van Hamersveld (exact or similar names) - Cleveland Heights, OH |
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Patent Dates:
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| Applied: |
Jan. 07, 1930 |
| Granted: |
Jul. 07, 1931 |
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Jeff Joslin
Vintage Machinery entry for Bardons & Oliver
Vintage Machinery entry for Warner & Swasey Co.
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Description: |
| This patent number was seen on a Bardons & Oliver turret lathe. The patent covers an indicator that shows surface feet per minute. The patent drawings show the indicator on a lathe but the specification claims its use on lathes, boring mills, drill presses, milling machines, planers and shapers. |
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