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Automatic Railway-Switch
Patent for an improved automatic railway switch based on an earlier model made by the same person. Illustrations included.
Date:
February 11, 1908
Creator:
McGee, Richard M. & Jones, William M.
System:
The Portal to Texas History
Building-Slab
Patent for new invention that would improve in the construction of upright walls.
Date:
February 11, 1920
Creator:
Hanszen, Oscar A.
System:
The Portal to Texas History
Clothes-Pin.
Patent for metallic clothes pins made from a single length of wire.
Date:
February 11, 1919
Creator:
Atkins, Irving J.
System:
The Portal to Texas History
Gas-Generator.
Patent for an apparatus for generating gas from light hydrocarbons. Includes instructions and illustrations.
Date:
February 11, 1896
Creator:
Vestal, William B. & Ray, Samuel W.
System:
The Portal to Texas History
Ruler.
Patent for a new and improved ruler. This design consists in "the combination of the flexible top piece or strip having parallel longitudinal ruling-edges and the separate tapering feet secured to the underside of said strip at suitable distances apart throughout the length of the latter, and with the ruling-edges of the top strip overlapping them" (lines 43-50).
Date:
February 11, 1890
Creator:
Matthews, Oscar S.
System:
The Portal to Texas History