US Patent: 1,564,167
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| Wrench blank and method of making the same
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Patentee:
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| William P. Witherow (exact or similar names) - Pittsburgh, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 07, 1922 |
| Granted: |
Dec. 01, 1925 |
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Patent Pictures:
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Patent 1,564,167 -- edited from PATENT GAZETTE |
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Stan Schulz
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Description: |
| Forming wrench blanks by die rolling; the examples shown in the drawing would produce double end open end wrenches. The claims include description and function of "gate" portions between the usable wrench blanks, and "flash."
An article about Witherow Steel's efforts in rolling steel appeared in the Jan. 1921 BLAST FURNACE AND STEEL PLANT. |
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