6 Matching Results
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Box Bull and Calf Wheel Gudgeon.
Patent for protection and strengthening of box bull and calf wheel gudgeons. The purpose is to prevent various troubles with well drilling (oil, etc.).
Date:
July 19, 1921
Creator:
Taylor, James Thomas
System:
The Portal to Texas History
Collar Fastener and Supporter
Patent for an object that provides the collar support and is hidden.
Date:
July 19, 1921
Creator:
Hudson, George J.
System:
The Portal to Texas History
Drier.
Patent for a drier, specifically to dry saturated grounded food items. This device is best used for flour from corn to dry before processing it to a powder form, but can also be used for other types of cereal.
Date:
July 19, 1921
Creator:
Garza, Pablo Gonzalez
System:
The Portal to Texas History
Electric-Current Relay
Patent for Electric-Current Relay to allow capability of use with either a direct or alternating current. This is adapted for economical use in constant temperature apparatus. Further, this technology avoids the possibility of "sticking of relay movable contacts".
Date:
July 19, 1921
Creator:
Lorenz, Charles O.
System:
The Portal to Texas History
Wrench.
Patent for a wrench with a head having a pair of rigid jaws to engage the object. One unique use of this wrench is that it can tighten any threaded joint beyond the degree of tightness that can be obtained by pulling the handle of an ordinary wrench in the usual manner.
Date:
July 19, 1921
Creator:
Duda, Oswald
System:
The Portal to Texas History
Portable Locomotive-Valve-Seating Machine.
Patent for improvements to valve-seating machines that allows for them to be constructed simply.
Date:
July 19, 1921
Creator:
Mooney, James J. & Bennet, Richard E.
System:
The Portal to Texas History