US Patent: 1,507,494
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| Pick-head fastener
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Patentee:
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| William D. Lewis (exact or similar names) - Plymouth, PA |
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Patent Dates:
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| Applied: |
Jul. 02, 1923 |
| Granted: |
Sep. 02, 1924 |
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Patent Pictures:
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Patent 1,507,494 -- edited drawing |
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Stan Schulz
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Description: |
| The patent describes details of a stirrup and wedge holder to attach pick heads and handles.
A 1927 trade journal announcement shows the pick produced by Howells Mining Drill Co., Plymouth, PA. |
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