US Patent: 577,880
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| Key Locking Wrench
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Patentee:
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| James M. Pflieger (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 26, 1896 |
| Granted: |
Mar. 02, 1897 |
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Patent Pictures:
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James M. Pflieger patent March 2, 1897 |
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Stan Schulz
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Description: |
| Rack teeth on the movable jaw are held in engagement with rack teeth on the main shank by a sliding keeper with a thickness equivalent to the depth of the rack teeth. The keeper has to be slid clear of the back strap portion of the movable jaw structure to allow adjustment.
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