US Patent: 1,365,468
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| Valve Spring Lifter
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Patentee:
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| John Fabien Duby (exact or similar names) - Boston, MA |
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Patent Dates:
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| Applied: |
Dec. 17, 1919 |
| Granted: |
Jan. 11, 1921 |
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Patent Pictures:
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John F. Duby patent January 11, 1921 |
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Stan Schulz
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Description: |
| Size adjustment by a screw; tightening by "squeeze" action of the handles, with a pawl and rack to hold the spring in compressed position.
J.F. Duby unveiled two sizes ("Ford" and "Universal") at the 1920 Boston Auto Show; he was advertising in the early 1920s.
Corresponding Canadian patent CA-229,008 was granted Febr. 27, 1923. |
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