UNT Libraries Government Documents Department - 1,598 Matching Results

Search Results

Results: 1 - 24 next

Coupling-Pin.

Description: Patent for a coupling pin for railroad cars, which prevents the coupling from coming loose accidentally by having a key which locks the coupling in place and can only be undone by the cars operating systems. when it is time to disconnect the car.
Date: July 23, 1907
Creator: Yeiser, John Clarke
Item Type: Refine your search to only Patent

Apparatus for Sizing Ores or for Other Uses

Description: Patent for an apparatus for sizing ores. This invention is to "accomplish and accurate or approximately accurate sizing or classification of ores or granular materials in a rapid and thorough manner and with as large a capacity as possible" (line 15-19) illustrations included.
Date: June 23, 1903
Creator: Swain, Seth Russell
Item Type: Refine your search to only Patent

Cabinet

Description: Patent for a phonograph cabinet which has specialized storage for records with a built in cataloging and record finding system composed of letters running horizontally across the cabinet and numbers on a sliding strip which when put together with a letter will indicate the position of the record.
Date: March 23, 1909
Creator: Keltz, Eugene
Item Type: Refine your search to only Patent

Antifreezing Valve and Closet-Cistern

Description: Patent for "valves which will allow all the water to flow out of the popes to a position below freezing-point after each application of water, whether the water is used in a closet-cistern or drawn out of a hudrant or other application is made, and to arrange the valves so that the supply-valves will be automatically closed by water-pressure in connection with the operation of a siphon in a closet-cistern and the waste-valve will be closed by the pressure of water, siphonic action, or both, whe… more
Date: April 23, 1901
Creator: Wilkes, George W.
Item Type: Refine your search to only Patent

Cement.

Description: Patent for cement of the type commonly known as Keene's cement, which is harder and glossier than other types of cement.
Date: March 23, 1909
Creator: Jones, Thomas
Item Type: Refine your search to only Patent

Compound Railway-Rail

Description: Patent for a compound railway-rail. This invention is a solid open jointed rail whereby two longitudinal section may be brought together without creating open joints. Illustration included.
Date: April 23, 1907
Creator: Stephens, George B.
Item Type: Refine your search to only Patent
Back to Top of Screen