US Patent: 472,745
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| Belt-Shifter
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Patentee:
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| Edward A. Walker (exact or similar names) - Philadelphia, PA |
| USPTO Classifications: |
| 474/3 |
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Patent Dates:
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| Applied: |
Apr. 29, 1891 |
| Granted: |
Apr. 12, 1892 |
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Joel Havens
"Vintage Machinery" entry for Walker Brothers
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Description: |
| Francis T. Chambers - patent attorney
My invention relates to devices used for shifting belts from fast to loose pulleys, and vice versa, and has for its object the improvement of such devices, particularly as applied to the class of planing-machines in which the work is held stationary and the cutting-tool carried on a reciprocating wheel actuated by the belts to which the shifting device is applied.
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