US Patent: 450,154
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Wrench
Improvements in Wrenches For Internal Nipples
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Patentee:
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| John J. Hogan (exact or similar names) - Brooklyn, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 31, 1890 |
| Granted: |
Apr. 14, 1891 |
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Patent Pictures:
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John J. Hogan patent April 14, 1891 |
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Stan Schulz
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Description: |
| The wrench has an end toggle which is designed to hold a nut in place while the wrench turns a threaded sleeve into the nut. A section of pipe slid over the wrench shank holds the sleeve until the threads engage. The wrench is shown with an octagonal barrel, but could be of any other shape corresponding to the internal shape of the nipple fitting. This construction is intended for use in assembling heating radiators comprised of separate sections held together with this kind of coupling sleeves. |
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