US Patent: 600,813
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| Adjustable Spanner or Wrench
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Patentee:
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| Jozua Cornelis Hendrikus Van Duijl (exact or similar names) - Kralingsche-Veer, Netherlands |
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Patent Dates:
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| Applied: |
Apr. 05, 1897 |
| Granted: |
Mar. 15, 1898 |
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Patent Pictures:
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J.C. H. Van Duijl patent March 15, 1898 |
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Stan Schulz
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Description: |
| The main feature of the patent and distinctive feature of the wrench is the body extension which supports the movable jaw in its extended position.
Markings on extant examples suggest the wrench was produced in the Netherlands and other European countries. A European collector says it was made by a German manufacturer. It may also have had limited production or distribution in the United States. The inventor's name sometimes appears as "van Duyl" or "Duyl."
Corresponding British patent GB-189629300 was registered Dec. 21, 1896.
One extant example marked "D.R.G.M." includes a swinging toothed hook jaw and gripping teeth cut on the "outer" surface of the adjustable jaw, forming a combination pipe and nut wrench. |
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