US Patent: 680,560
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Wrench
Stay-Bolt Thimble Wrench
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Patentee:
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| Joshua B. Barnes (exact or similar names) - Springfield, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 08, 1901 |
| Granted: |
Aug. 13, 1901 |
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Patent Pictures:
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Joshua B. Barnes patent August 13, 1901 |
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Stan Schulz
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Description: |
| The wrench is designed to remove the stay-bolt thimble described in Barnes' April 23, 1901 stay-bolt patent (no. 672,852). Barnes had parallel design patents for stay-bolt wrenches -- (nos. D34,837 and D34,838).
Boiler stay bolts connect the inner and outer layers of boilers. |
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