US Patent: 1,691,320
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| Attachment for lathes
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Patentee:
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| Harris Morgan Whitcomb (exact or similar names) - Albany, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 24, 1925 |
| Granted: |
Nov. 13, 1928 |
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Joel Havens
"Vintage Machinery" entry for A.H.S. Manufacturing Co.
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Description: |
| "The primary object of this invention is to produce in a rapid, efficient and economical manner a leakproof sectional piston ring so formed as to hold its true circular form at all degrees of expansion and contraction, regardless of temperature, and which is adapted for application to variously sized cylinders without trimming or fitting or the exercise of even ordinary mechanical skill." |
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