UNT Libraries Government Documents Department - 4 Matching Results

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Calculating-Machine.

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.

Car Coupling.

Patent for a new and improved coupling for railroad cars. This design consists "[i]n a car-coupling, the combination of a recessed draw-head having abutments . . . and a transverse ridge, of a link adapted to rock on said ridge, a pivoted coupling-hook carrying a diagonally-projecting pin near its forward end, and a spiral spring arranged diagonally above the coupling-hook and surrounding said pin" (lines 93-100).

Date: November 17, 1885

Creator: Nutting, Adrain

Clothes Pounder

Patent for a clothes pounder. Illustration included.

Date: May 17, 1910

Creator: Turner, James S. & Campbell, John Luther

Mulsher.

Patent for a tool to help with farming. It cuts weeds below the surface of the ground and throws the soil towards the row of crops. This tool should help with crop growth.

Date: August 17, 1915

Creator: Sikes, Jonas C.