US Patent: 715,338
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Rope-operating apparatus
Swinging-gear for derrick engine
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Patentees:
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| Charles A. Baechtold (exact or similar names) - Brooklyn, NY |
| Harry N. Covell (exact or similar names) - Brooklyn, NY |
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Patent Dates:
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| Applied: |
May 26, 1899 |
| Granted: |
Dec. 09, 1902 |
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Jeff Joslin
Vintage Machinery entry for Lidgerwood Mfg. Co.
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Description: |
| The derrick-engines in this invention have two drums, one for the hoisting-rope and the other for the boom-fall rope that raises and lowers the boom. |
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