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11 Matching Results
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Collar-Form
Patent for a device that will hold soft shirt collars in position, giving them a neater appearance.
Date:
July 22, 1919
Creator:
White, William D.
System:
The Portal to Texas History
Automobile-Alarm.
Patent for a device to prevent the theft of automobiles capable of producing audio and visual signals as warnings of unauthorized access.
Date:
April 22, 1919
Creator:
Smith, Thomas H.
System:
The Portal to Texas History
Process of Leaching Copper Ores
Patent for "a method of recovering copper by the electrolysis of copper solutions of any suitable kind, obtained by the lixiviation of the ore" (lines 9-12). The improvement in this method is that almost all the sulfuric acid and other leaching agents are used up prior to the copper going to the electrolysis tanks which increases the amount of copper recovered and the reduction of accumulated biproducts.
Date:
October 22, 1918
Creator:
Hahn, Albert W.
System:
The Portal to Texas History
Automatic Separating Device.
Patent for an automatic separating device. This device operates with a link that connects the float level at the top of the tank with a valve handle at the bottom of the tank to control discharge from the tank.
Date:
January 22, 1918
Creator:
Allen, Charles
System:
The Portal to Texas History
Film-Winder for Cameras.
Patent for a film-winder for cameras. This particular film-winder is designed so that the exact required amount of film is placed upon the lens of the camera.
Date:
May 22, 1917
Creator:
Mansfield, Clarence H.
System:
The Portal to Texas History
Locking Device for Steering-Wheels.
Patent for a new and improved locking device for steering wheels that secures the front axle of an automobile at an angle to prevent unauthorized movement beyond a small circle or curve, including illustrations.
Date:
August 22, 1916
Creator:
Coleman, Oscar F.
System:
The Portal to Texas History
Paper-Guide.
Patent for a Paper-Guide that can be folded, when it is not in service position, to allow it to be covered by the typewriting machine it is attached to. The patent includes illustrations.
Date:
July 22, 1913
Creator:
Davis, Alice Urilla
System:
The Portal to Texas History
Piston
The Patent for an improved piston to be used in connection with the cylinders of air brakes. The improvement involves making the removal and replacement of worn out packing material easier.
Date:
July 22, 1913
Creator:
King, Herbert G.
System:
The Portal to Texas History
Automatic Car-Dump
Patent for automatic dumpers that can be readily and inexpensively fitted and adapted to most forms of dump car.
Date:
April 22, 1913
Creator:
Putnam, John J.
System:
The Portal to Texas History
Fiber Cleaning Machine
Patent for a machine for removing the bark or husk and pulp from fibrous plants. This machine promises to be smaller and more efficient than earlier models.
Date:
August 22, 1911
Creator:
Vaughn, Henry L.
System:
The Portal to Texas History
Process of Producing Metallic Zinc
Patent for a process of producing metallic zinc. Illustration included.
Date:
November 22, 1910
Creator:
Dawson, Oliver B.
System:
The Portal to Texas History