UNT Libraries Government Documents Department - 4 Matching Results

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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

Convertible Corn and Cotton Planter, Stalk-Cutter, and Roller.

Description: Patent for a convertible corn and cotton planter, stalk-cutter, and roller. It has a main frame, a supplemental frame that has its front end hinged to the front of the main frame, a roller with circular journaled in the supplemental frame, transverse segment-plates with removable blades attached to the supplemental frame, spaces between the segment-plates, an axle, driving-wheels, a sprocket wheel and chain, feed-boxes, means for feeding the grain, and wheels for laying the ground and the cover… more
Date: April 28, 1896
Creator: Mauldin, Columbus Scott
Item Type: Refine your search to only Patent

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
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