UNT Libraries Government Documents Department - 10 Matching Results
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- Air-Lock for Mines and Tunnels
- Patent for an air lock to remove water, polluted air, and heat from mines and tunnels and force in fresh air. Illustrations included.
- Apparatus for Utilizing Hot Slag for Heating Purposes
- Patent for an apparatus which holds molten slag in the exterior chambers of the receptacle such that the interior chambers can receive water to be heated, producing steam and hot air.
- Boiler Stay Bolt
- Patent for a boiler stay bolt. Illustration included.
- Fluid-Operated Signal
- 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.
- Internal-Combustion Engine.
- Patent for an internal combustion engine for multi-cylinder engines, which has automatically opening valves powered by the exhaust gas.
- Metal Cross Tie And Rail Fastener
- Patent for metal cross ties and rail fasteners. Illustrations included.
- Rack Construction for Refrigerator-Cars.
- Patent for a rack to be used in refrigerator rail cars for the transportation of produce. Illustrations included.
- Rail Joint Connection
- Patent for Rail-Joint Connection
- Selective Call for Telegraph or Telephone Lines
- Patent for a device that allows the user to ring a specific telephone or telegraph line without ringing the bells at other lines.
- Windmill Tower
- Patent for a windmill tower. Illustrations included.