US Patent: 174,004 - Improvement in direct-acting steam-feed-works for circular-saw mills


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US Patent: 174,004

Improvement in direct-acting steam-feed-works for circular-saw mills

Patentee:

De Witt Clinton Prescott (exact or similar names) - Marinette, WI

USPTO Classifications:

91/466

Tool Categories:

woodworking machines : circular saws : circular sawmills

woodworking machines : sawmills : sawmill feed works

woodworking machines : sawmills : circular sawmills

Assignees:

None

Manufacturer:

Marinette Iron Works Co. - Marinette, WI

Witnesses:

Unknown

Patent Dates:
Applied:	Nov. 13, 1875
Granted:	Feb. 22, 1876

Reissue Information:
Reissued as RE8,160 (Apr. 09, 1878)

Patent Pictures:

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Vintage Machinery entry for Marinette Iron Works Co.

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, with a steam-piston 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 effective, controllable and reliable. See patent 360,972 for a subsequent improvement.