US Patent: 174,004
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| Improvement in direct-acting steam-feed-works for circular-saw mills
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Patentee:
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| De Witt Clinton Prescott (exact or similar names) - Marinette, WI |
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Patent Dates:
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| Applied: |
Nov. 13, 1875 |
| Granted: |
Feb. 22, 1876 |
| Reissue Information: |
| Reissued as RE8,160 (Apr. 09, 1878) |
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Jeff Joslin
Vintage Machinery entry for Marinette Iron Works Co.
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Description: |
| This patent proved to be quite important because it replaced a complex arrangement of belts, pulleys, shafts, etc., to feed the carriage past the sawblade, replacing it with a long steam-cylinder holding a piston that is directly coupled to the log carriage. Slide-valves are used to regulate the forward and reverse motion. For a steam-powered sawmill this mechanism proved to be highly effective, controllable and reliable. See patent 360,972 for a subsequent improvement. |
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