US Patent: 1,553,068
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| Wrench
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Patentee:
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| August Edwin Carlberg (exact or similar names) - Worcester, MA |
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Patent Dates:
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| Applied: |
Aug. 05, 1922 |
| Granted: |
Sep. 08, 1925 |
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Patent Pictures:
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A. E. Carlberg patent Sept. 8, 1925 |
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Stan Schulz
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Description: |
| The patent covers the extended "loop" providing extra leverage for initial loosening and final tightening with a "speed" brace wrench. Introduced as the "Double Power Brace Wrench." Several Walden-Worcester No. 15xx and No. 17xx speeders employed this design. Examples are known with "PAT PEND." and with the patent number. The numbering reflects sizes in 32nds - 22/32 = 11/16; 20/32 = 5/8.
The "knob" handle end shown on this drawing reflects S.R. Enberg's March 1, 1923 patent no. 1,537,529.
Moses, Hammond, Morse & Nolte - patent attorneys
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