US Patent: 388,007
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| Clamp Screw
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Patentee:
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| Pardon A. Whitney (exact or similar names) - Southington, CT |
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Patent Dates:
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| Applied: |
May 19, 1888 |
| Granted: |
Aug. 14, 1888 |
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Patent Pictures:
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Pardon A. Whitney patent Aug. 14, 1888 |
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Stan Schulz
"Vintage Machinery" entry for Peck, Stow & Wilcox
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Description: |
| Malleable "wing nut" type head pinned to a steel screw; this makes a more durable screw for "C" or bar clamps.
This improvement was incorporated into clamps produced by Peck, Stow & Wilcox, including "C" clamps with bodies corresponding to design patent D18,376. -- See that DATAMP entry for photos, 1890 product description, etc. |
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