US Patent: 1,071,666
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Wrench
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Patent Dates:
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Applied: |
Mar. 24, 1913 |
Granted: |
Aug. 26, 1913 |
Patent Pictures:
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Hansen and Heberer patent August 26, 1913 |
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Stan Schulz
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Description: |
Interchangeable heads can adjust at an angle to the shank. and shift position in ratchet fashion due to teeth on their "back" edge, and the conformation of the spring that holds the head in place.
Produced with four sizes of interchangeable open end heads and a fixed size alligator wrench on the end of the handle as the MARSHALLTOWN by the C & E Mfg. Co. of Marshalltown, Iowa. |
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