9 Matching Results

Search Results

Results: 1 - 9

Railroad Signal

Description: Patent for a railroad signal. This invention is an improvement for signalling by the trains interaction on the rails. Illustration included.
Date: April 30, 1907
Creator: Harvey, Albert Wadkins
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Railway-Crossing

Description: Patent for crossings for railway tracks and particularly to means for closing the cut in the rails made for the flanges of the wheels, and the object is to provide sliding members which can be easily operated to close the slot or cut in the crossing rails for the flanges of the wheels so that a continuous tread will be formed for every wheel that passes over the crossing and to provide a mechanism for the tracks.
Date: March 30, 1909
Creator: Adams, Powell O.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

[Letter from Chester W. Nimitz to William Nimitz, September 30, 1903]

Description: Handwritten letter from Chester Nimitz to his father in Kerrville. Nimitz briefly explains his whereabouts and that he will be back at Annapolis and studying very soon. This letter is on Metropolitan Hotel (Washington, DC) stationery.
Date: September 30, 1903
Creator: Nimitz, Chester W. (Chester William), 1885-1966
Item Type: Refine your search to only Letter
Partner: National Museum of the Pacific War/Admiral Nimitz Foundation

Fluid-Operated Signal

Description: Patent for a fluid operated signal with illustrations. The device would allow communication between a train engineer and a caboose conductor through a device that utilizes the fluid-pressure brake system of the freight train.
Date: September 30, 1902
Creator: Bell, Chester L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Car-Mover

Description: Patent for a car mover designed to move train cars along the tracks and sidings. Illustrations included.
Date: June 30, 1908
Creator: Peek, Joseph S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
Back to Top of Screen