US Patent: 824,975
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| Centering Device
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Patentee:
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| Edward L. Cook (exact or similar names) - Brattleboro, VT |
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Patent Dates:
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| Applied: |
Sep. 09, 1905 |
| Granted: |
Jul. 03, 1906 |
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Patent Pictures:
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1 | 2
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Ralph Brendler
"Vintage Machinery" entry for Goodell-Pratt Co.
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Description: |
| This tool uses three hinged arms to accurately mark the center of a shaft or rectangle.
The production tool differs from the patent drawing in that it does away with the angled arm, and moves the locking screw to the center arm. It works just the same, but would be easier to produce. |
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