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509 Matching Results
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Results:
505 - 509 of
509
Single-Trigger Mechanism for Double-Barrel Guns.
Patent for a new single-trigger mechanism for double-barrel guns in which both barrels fire successively and premature discharge is prevented, including illustrations.
Date:
April 26, 1921
Creator:
Lindsay, Charles W.
Object Type:
Patent
System:
The Portal to Texas History
Washing-Machine
Patent for an improved clothes containing basket within washing machines that is longer-lasting and less likely to become imbalanced. The device increases agitation of clothes and water.
Date:
April 19, 1921
Creator:
Seifert, John W.
Object Type:
Patent
System:
The Portal to Texas History
Pipe-Perforator
Patent for pipe-perforator made for well screens. This perforator is designed to provide staggered rows of perforations.
Date:
November 29, 1921
Creator:
Dunsworth, George W.
Object Type:
Patent
System:
The Portal to Texas History
Roller for Cotten-Gins.
Patent for an improved cotton gin roller, to separate cotton fibers from cotton seeds. Made with a hollow design to prevent the device from becoming too hot during use.
Date:
March 1, 1921
Creator:
Tischer, Edward R.
Object Type:
Patent
System:
The Portal to Texas History
Cable-Clamp.
Patent for improved cable-clamps for oil drilling and water wells, such that the gripping member will accommodate a variety of cable sizes.
Date:
March 29, 1921
Creator:
Lacy, Benjamin B.
Object Type:
Patent
System:
The Portal to Texas History