US Patent: 1,303,157
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| Spline Shaft Spanner Wrench
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Patentee:
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| Carl P. Brockway (exact or similar names) - Toledo, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 05, 1917 |
| Granted: |
May 06, 1919 |
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Patent Pictures:
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Carl P. Brockway patent May 6, 1919 |
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Stan Schulz
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Description: |
| The design shown in the patent would only firmly fit one shaft diameter. The advantage is it could be inexpensively made of malleable cast iron. |
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