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Manufacture of Aluminum Chloride.
Patent for the manufacture of Aluminum Chloride that can be carried out at lower temperatures with aluminum ore or compound, such as bauxite, sulfur and chlorine, and involves no cooking.
Date:
July 11, 1922
Creator:
Hall, Frank W.
System:
The Portal to Texas History
Player Piano
Patent for a new form of valve for mechanical piano operated by pneumatic mechanisms in which the value is self-centering and does away with the guide pin usually employed, and an amplification of the wippen so that the striker rod is placed at the front of the pneumatic mechanism where it is accessible. The change in leverage permits the use of a smaller pneumatic.
Date:
January 31, 1922
Creator:
Pace, Vara L.
System:
The Portal to Texas History
Shutter for Motion-Picture Machines.
Patent for a shutter for motion picture cameras to eliminate flickering. Produced by stamping the device from sheet metal.
Date:
August 22, 1922
Creator:
Patureau, Arthur M.
System:
The Portal to Texas History
Hydraulic Swivel
Patent for a new and useful improvement in hydraulic swivels by simplifying the structure and making the device more efficient and reliable.
Date:
March 7, 1922
Creator:
Black, Lee J.
System:
The Portal to Texas History
Method of Purifying Oils
Patent for a new and useful improvement in the method of purifying oils, particularly applicable to cracked gasoline.
Date:
January 10, 1922
Creator:
Alexander, Clive M.
System:
The Portal to Texas History
Manufacture of Aluminum Chloride.
Patent for improvements of manufacture of aluminum chloride, comprising "a method of utilizing certain oily residues which are the result of treatment of oils with aluminum chloride or with substances capable of forming aluminum chloride" (lines 11-14), including illustrations.
Date:
February 7, 1922
Creator:
McAfee, Almer M.
System:
The Portal to Texas History
Monolithic Wall.
Patent for concrete wall construction which is light in weight and inexpensive to fabricate. Frames may be previously constructed in a manner to allow for windows and other common wall features.
Date:
February 7, 1922
Creator:
Graham, Malcolm J
System:
The Portal to Texas History
Direction Signal for Automobiles.
Patent for lit directional signal for automobiles that indicates driver's intention to stop or to turn left or right, including illustrations.
Date:
February 7, 1922
Creator:
Womack, Foster B.
System:
The Portal to Texas History