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Air-Cooling Apparatus.
Patent for an air cooling apparatus for air to be delivered into a room treated with moisture to reduce the temperature of the air without the use of ice.
Date:
March 21, 1916
Creator:
Hollenburger, Joseph
System:
The Portal to Texas History
Plow.
Patent for a new and improved plow. This design consists in "[t]he combination, with the plow-beam, the slotted and braced standard, and the adjustable land-bar, of the winged attachment formed with perforated lugs, the plow-point formed with upper and lower extensions and secured to said attachment" (lines 95-100).
Date:
August 21, 1888
Creator:
Wied, August & Lürssen, Henrich
System:
The Portal to Texas History
Improvement in Cultivators.
Patent for "a new and Improved Cultivator" (lines 3-4) including instructions and illustrations.
Date:
June 21, 1859
Creator:
Veal, Franklin
System:
The Portal to Texas History