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Ant Trap.
Patent for a new and improved ant trap. This design consists "[i]n a device for catching ants, the combination, with an open frame, of the end piece or trough, having a concave bottom and overturned edges" (lines 84-87).
Date:
March 29, 1887
Creator:
Haines, Samuel Alfred
System:
The Portal to Texas History
Nut Lock.
Patent for a new and improved nut lock. This design calls for a grooved nut and bolt to hold a pin between the two while the bolt is screwed onto the nut. Depending on whether or not the pin is in said grooves, the nut may or may not be removed from the bolt, which increases the worker's control over the nut and bolt and prevents unintended loosening.
Date:
March 1, 1881
Creator:
Bunker, John Williamson
System:
The Portal to Texas History
Harvester-Reel.
Patent for the placement of a "covering of canvas, cloth, or other suitable material" (lines 16-17) around a harvester-reel for various improvements, including instructions and illustrations.
Date:
March 23, 1880
Creator:
Moore, Joseph Martial
System:
The Portal to Texas History