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Improvement in Molds for Sewer-Building.

Description: Patent for a collapsible mold on wheels, allowing a sewer to "be built in sections around the mold and the mold moved along the trench as sections are completed" (lines 13-16) including illustrations.
Date: December 23, 1879
Creator: Burns, James
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Improvement in Cotton-Scrapers.

Description: Patent for an improvement in the construction of cotton-scrapers, "which is secured to the stock or standard so as to project out to one side of the cultivator-shovel" (lines 14-16) including illustrations.
Date: December 23, 1879
Creator: Hill, Abner R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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