Bed Spring. (open access)

Bed Spring.

Patent for a new and improved bed-spring. This design consists in "the adjustable tie that connects the springs beneath the slats. This device is simple, cheap, convenient, and durable. It is adjustable to slats placed at different distances apart, and will remain in position when placed upon the slats, holding the diagonal rows of springs in a straight line, causing the springs to remain uniform all over the bed" (lines 72-80).
Date: May 19, 1885
Creator: Davis, Charles Robert
System: The Portal to Texas History
Electrically-Operated Latch and Door (open access)

Electrically-Operated Latch and Door

Patent for electrically operated latch and door " and particularly to a construction for primarily operating a latch to release the door, the movement of which latch establishes circuit through a door-opening mechanism.(lines 11-15)
Date: May 19, 1903
Creator: Chambers, Joseph, Jr.
System: The Portal to Texas History
Dielectric Separator (open access)

Dielectric Separator

Patent for an apparatus that "separates substances of different dielectric capacities" (lines 12-13). Illustrations included.
Date: May 19, 1908
Creator: Sutton, Henry M.; Steele, Walter L. & Steele, Edwin G.
System: The Portal to Texas History
Process for Reduction of Unsaturated Fatty Acids and Their Esters (open access)

Process for Reduction of Unsaturated Fatty Acids and Their Esters

Patent for saturated fatty acid reduction using hydrogen, a palladium group catalyzer, and a fat solvent.
Date: May 19, 1914
Creator: Maryott, Carlton H
System: The Portal to Texas History