US Patent: 935,482
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| Wrench
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| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 28, 1909 |
| Granted: |
Sep. 28, 1909 |
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Patent Pictures:
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A. & B. W. Fresko Pat. Sept. 28, 1909 |
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Stan Schulz
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Description: |
| A crank on the end of the handle turns a cam disk, which imparts motion to a ratchet head through a connecting rod. A pressure spring keeps the rod pressed against the cam disk. The back of the cam disk rides on ball bearings. |
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