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Acetylene-Gas Generator.

Description: Patent for improving an Acetylene-Gas Generator. To eliminate a check valve between the generator and the gasometer, this will purify the gas and keep siphoning off of water from occurring.
Date: September 8, 1903
Creator: Gribble, William A.
Item Type: Refine your search to only Patent

Aerocompass.

Description: Patent for an aerocompass, which improves upon a compass combined with inclinometers or map-boards. It is intended for use on submarines, airplanes, or in an area when it would be difficult to use a regular compass.
Date: January 8, 1918
Creator: Fischer, Fred Charlie.
Item Type: Refine your search to only Patent

Animal Shears.

Description: Patent for new and improved animal shears. This design is "of a platinum or other wire or conductor heated to a high temperature, sufficient to burn through the fibers of the wool or hair, and [is] passed over the surface of the body as close as may be deemed desirable to the roots. No injurious effects are produced upon the animal or upon the wool or hair removed, while at the same time the same may be removed with great uniformity and expedition" (lines 28-36).
Date: June 8, 1886
Creator: Harrell, Joseph J.
Item Type: Refine your search to only Patent

Ant-Trap.

Description: Patent for a new type of ant trap that captures ants by having them crawl up a wooden central chamber and then fall into a sheer metal pit. Includes illustrations.
Date: December 8, 1891
Creator: Walker, Stephen A.
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Apparatus for Impregnating Liquids with Gases.

Description: Patent for a new and improved apparatus for impregnating liquids with gases. This design "relates to apparatus for impregnating water or other suitable liquid with the fumes emanating from the consumption of a combustible composition of matter, such as sulphur, which when ignited emits a gas containing suitable medicinal qualities" (lines 14-19). It consists in "the closed reservoir for containing the liquid, having windows upon opposite walls thereof, of the transverse beam having its ends sup… more
Date: October 8, 1889
Creator: Radam, William
Item Type: Refine your search to only Patent

Attachment for Gun-Slings

Description: Patent for an attachment for gun slings that can be used on army rifles or other guns and provides the means for the sling to be held tight against the arm for steady aim.
Date: November 8, 1921
Creator: {Grierson, Benjamin Henry}
Item Type: Refine your search to only Patent
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