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in creator/contributor: "Henderson, William G."  
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Aeroplane.

Description: Patent for improved propulsion for airplanes involving propellors in the front and rear of the plane. This aids in regulating air currents to stabilize flight, landing and speed. The patent includes illustrations.
Date: June 12, 1917
Creator: Campbell, John R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Brick-Machine

Description: Patent for "that class of brick-machines usually termed 'dry-press machines,' in which clay is taken from the bank and passed into molds in a revolving wheel" (lines 15-19) and "consists more particularly in the construction of details and combination of parts" (lines 23-25) including instructions and illustrations.
Date: June 15, 1880
Creator: Johnson, Richard M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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