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Core-Barrel.
Patent for a core barrel for use in rotary drilling of oil or water wells, that will allow for easy extraction of the upwardly extending column of material.
Date:
October 14, 1919
Creator:
Humason, Granville A. & Childs, William L.
System:
The Portal to Texas History
Boiler-Skimmer.
Patent for a boiler-skimmer that improves the hinge joint so that water or scum will have free access there and in all positions of the skimmer.
Date:
October 14, 1919
Creator:
Phillips, Eugene N. & Dick, Harvey H.
System:
The Portal to Texas History
Book Cover Protector
Patent for improvements to book cover protectors. This protector is adjustable and can be attached to a book with adhesive or tongue-and-slit construction.
Date:
October 14, 1919
Creator:
Walraven, A.T. of Dallas, Texas
System:
The Portal to Texas History
Toy Dish.
Patent for a toy dish that is lightweight, attractive, durable, and cheap to manufacture. The design utilizes celluloid coverings.
Date:
October 14, 1919
Creator:
Luthy, Joseph O.
System:
The Portal to Texas History
Gun.
Patent for an artillery gun which can be moved in any direction due to improvements in its base.
Date:
October 14, 1919
Creator:
Collier, William Reid
System:
The Portal to Texas History
Unloading and Feeding Apparatus.
Patent for improvements in Unloading and Feeding Apparatus, which improves the handling of fodder in a simple, practical, and cost effective way.
Date:
October 14, 1919
Creator:
Pierson, Ludvig B.
System:
The Portal to Texas History
Filter for Oil and Other Lubricants.
Patent for improvements in a filter for oil and other lubricants. Designed for the purpose of cleansing oils, particularly waste oils.
Date:
October 14, 1919
Creator:
Schmidt, George C.
System:
The Portal to Texas History