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in creator/contributor: "Hamilton, Tom M."  
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Railway-Switch.

Description: Patent for an improvement to railway switches, by creating an automatic switch that changes the direction of a track from object while object is moving on track.
Date: January 13, 1914
Creator: James, Samuel
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Non-Refillable Bottle

Description: Patent for an improvement on non-refillable bottles. The improvement would not let any other liquid be surreptitiously added to the bottle. Also this patent design allows for the closure plug to be reused by the manufacturer of the bottle in new bottles.
Date: March 3, 1914
Creator: Helmcamp, Louis C. & Hoxworth, Edwin
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Sash-Lock.

Description: Patent for a sash lock that comprises two members that are secured together in a manner to hold the meeting rails in close contact.
Date: May 2, 1916
Creator: Huber, Frederick K.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Ice Breaking Machine.

Description: Patent for an improved Ice Breaking Machine. This new design has movable plates that allow for the ice to be broken up into various sizes as desired by the user. It is also of a simpler construction than earlier machines.
Date: June 22, 1914
Creator: Krocker, Adolf C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Coal-Oil Generator.

Description: Patent for improvements in oil burners to have the "means to permit the same to be positioned within the fire box of a stove, by means of the especially constructed support." (lines 12-15)
Date: July 13, 1920
Creator: Epps, Henry Gaston
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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