US Patent: 2,792,734
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| Pre-set indicating wrench
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Patentees:
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| George M. Walraven (exact or similar names) - Kenosha, WI |
| Kenneth R. Larson (exact or similar names) - Des Plaines, IL |
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Patent Dates:
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| Applied: |
Jun. 22, 1955 |
| Granted: |
May 21, 1957 |
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Stan Schulz
"Vintage Machinery" entry for Snap-On, Inc.
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Description: |
| Improvements to patents 2,312,104, 2,367,224, and 2,682,796. These patent torque wrench designs all use the amount of twist, rather than flex, of a beam to indicate the torque. This patent provides an audible indicator when a pre-set torque is reached. |
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