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in creator/contributor: "Walker, H. J."  
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Internal-Combustion Engine

Description: Patent for an improved internal combustion engine. Among the improvements, it allows "compounding the expansion effect to obtain the highest possible efficiency." ( lines 11-13)
Date: January 16, 1912
Creator: Pearson, Samuel
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Transmission Chain or Belt.

Description: Patent for a transmission belt with elastic contact components to allow for a constant pressure exerted on the pulleys, which in turn allows for smoother driving.
Date: October 16, 1917
Creator: Lynn, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pump

Description: This patent is for pumps. This patent allows for the pump barrel to be readily disengaged from its normal positive engagement with the well tube for removal from said tube for repairs or any other reason.
Date: March 19, 1918
Creator: Perry, Sherman V.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Picture-Film Apparatus.

Description: Patent for a new and improved picture film apparatus. Improvements made to rewinding reels and prevention of strain on the film while in operation. Reels can be separated which allows for reuse with multiple films.
Date: June 13, 1916
Creator: McNeel, William Pinkney
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Piano-Action

Description: Patent for a new piano-action that will get rid of unwanted sounds and reduce the amount of cushioning needed. Other goals are to ensure that strings cannot not be prevented from vibrating, and that a certain sound can be made.
Date: March 17, 1914
Creator: Blessing, John T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Photographic-Printing Machine

Description: Patent for a new and improved Photographic Printing Machine. The device allows for accurately positioning negative to contact accurately with printing paper.
Date: September 17, 1912
Creator: Loving, Roy R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Cab-Signal and Automatic Stop

Description: Patent for a cab-signal and automatic stop that "relates to railway safety appliances and has particular reference to signals carried preferably within the locomotive cab." (lines 9-12) includes instruction and illustrations.
Date: November 7, 1916
Creator: Bulla, Melbern Bernie
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Automatic Train-Stop.

Description: Patent for mechanism to automatically sound alarm and shut off steam when a train passes a danger point.
Date: December 21, 1915
Creator: Bulla, Melbern Bernie
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Contact-Shoe for Automatic Train-Stops.

Description: Patent for a new contact shoe, used in rail transport, attached to the train car to conduct automatic stops despite possible hazards through the use of magents and electricity, including illustrations .
Date: March 30, 1920
Creator: Bulla, Melbern Bernie
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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