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Priming-Cup
Patent for an improved version of the priming cup "shown in Patent No. 1,329,464, granted February 3, 1920" (lines13-14). Includes illustrations.
Date:
April 5, 1921
Creator:
Martinek, Stanley A.
System:
The Portal to Texas History
Clothes-Rack
Patent for Clothes Rack. This helps dry clothes indoors when the weather is bad outside.
Date:
March 22, 1921
Creator:
Wells, Lillie Bell
System:
The Portal to Texas History
Polish-Box Opener.
Patent for a tool designed to open boxes of shoe polish paste.
Date:
June 14, 1921
Creator:
Ramon, Zaragoza Gonsalez
System:
The Portal to Texas History
Engine.
Patent for a new engine designed to maximize power output by using a single crank's bearing surface and increase the crank power without lengthening the piston travel.
Date:
October 18, 1921
Creator:
Ingram, Joseph D.
System:
The Portal to Texas History
Wheel-Tread.
Patent for improvements on tractor wheel tread design, the structure of which was previously submitted by the inventor in 1918. This improved wheel tread makes the structure stronger and more compact.
Date:
March 29, 1921
Creator:
Ingram, Joseph D.
System:
The Portal to Texas History
Wheel Tread.
Patent for wheel treads designed for heavy vehicles. The metal shoes on the tread are to help enable the vehicle to go over both hard and soft surfaces.
Date:
February 8, 1921
Creator:
Ingram, Joseph D.
System:
The Portal to Texas History
Floor-Mop Wringer
Patent for a mop wringing frame that is portable and independent of the mop and the water receptacle. The device causes the mop to be subjected to a twisting action when the handle of the mop is rotated.
Date:
March 1, 1921
Creator:
Paul, Jennie Henry & Paul, William Robert
System:
The Portal to Texas History
Tractor
Patent for improvements in tractors for farm and road work. Improvements include enclosing all working parts within a protecting housing, mounting the motor for rotation, balance the weight, provide a wheel carriage to adjust the width and height, and to provide shifting gears.
Date:
April 26, 1921
Creator:
Ingram, Joseph D.
System:
The Portal to Texas History