Wind-Turbine. (open access)

Wind-Turbine.

Patent for improvements to wind motors for turbines "and has for its object to provide a wind turbine of novel structure or arrangement and including means for varying the admission of air currents to the wheel thereof" (lines 10-13).
Date: April 14, 1908
Creator: Gustafson, Claes Viktor
System: The Portal to Texas History
Improvement in Bungs. (open access)

Improvement in Bungs.

Patent for improvement in bungs for beer and other barrels.
Date: April 14, 1868
Creator: Stremme, Conrad C.
System: The Portal to Texas History
Metallic Railroad-Tie. (open access)

Metallic Railroad-Tie.

Patent for an improvement of metallic railroad ties in which clamp-plates are not needed to hold the longitudinal tension-rods, “instead the heads of the rods bear against the solid outer ends of the rail-seats which are constructed integral with the body of the tie.” (Lines 14-17) Illustration is included.
Date: April 14, 1891
Creator: Saunders, Ellison
System: The Portal to Texas History
Calendar (open access)

Calendar

Patent for a circular perpetual calendar.
Date: April 14, 1908
Creator: Rowe, Charles E.
System: The Portal to Texas History