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Cotton-Press.

Description: Patent for a simple, inexpensive, and powerful plunger for a cotton-press that is directly controlled by the operator. The plunger is hydraulically powered, the pressure being created by steam.The plunger's parts are arranged so the power is multiplied.
Date: April 24, 1894
Creator: Williams, Silas Jackson
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Calculating-Machine.

Description: Patent for an improvement to mechanical calculators by providing the "means for facilitating the addition of successive numbers of the same or different denominations, and also for subtracting and multiplying the same by substantially the means employed in adding" (lines 10-14). It includes a written explanation and illustrations.
Date: April 17, 1894
Creator: Stallard, Sherman R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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