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9 Matching Results
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Belt-Stretcher
Patent for an improvement in belt stretchers that are cheaper to make and easier to operate.
Date:
May 22, 1920
Creator:
Cherry, Warren L.
System:
The Portal to Texas History
Automatic Density-Indicator for Slime-Pulp Separators.
Patent for devices that thickens slimes for ore milling operations in which it will indicate the density and regulate it so it will not go below a predetermined value.
Date:
June 22, 1920
Creator:
Allen, Charles
System:
The Portal to Texas History
Coaling Device.
Patent for coal colliers that breaks the coal into small pieces and lifts the coal to pour the coal into the ship's bunkers.
Date:
June 22, 1920
Creator:
Buchanan, Stewart Harold
System:
The Portal to Texas History
Geometric Figure
Patent for a sewing pattern for spherical objects, including illustrations.
Date:
June 22, 1920
Creator:
Miller, Emma Thornton
System:
The Portal to Texas History
Drill-Bit.
Patent for improvements in drill bit constructions that allows the drill bit to be switched out and the new bit locked in so it is secure.
Date:
June 22, 1920
Creator:
Midgett, Penelton G.
System:
The Portal to Texas History
Ice-Machine
Patent for an icebox that can be combined with a refrigerator. The icebox will spray the ammonia compressor coil with water, as well as inducing a forced circulation of water in the icebox's freezing tank.
Date:
May 22, 1920
Creator:
Grant, Willburn C.
System:
The Portal to Texas History
Shelving
Patent for a shelving unit designed to display books for sale in a storefront, including illustrations.
Date:
June 22, 1920
Creator:
Wieman, Herman A.
System:
The Portal to Texas History
Penholder.
Patent for a simplified construction of a pen holder which is inexpensive to manufacture. It detachably engages the pen point, prevents rusting and sticking. Releases pen point without user needing to grip, therefore avoiding sullying fingers.
Date:
June 22, 1920
Creator:
Baldwin, Charles E.
System:
The Portal to Texas History
Razor.
Patent for a safety razor, with the objects of a creating a novel frame for holding a razor blade of any desired sort, and so that the vibrations will not be transferred to the carrying frame.
Date:
June 22, 1920
Creator:
Brasier, William Harry
System:
The Portal to Texas History