Spring-Clamp. (open access)

Spring-Clamp.

Patent for a spring clamp "for suspending small articles -- such as towels, dishcloths, and napkins -- and which may also be employed for hanging window-curtains, portières, goods in show-windows, and similar purposes" (lines 7-12)
Date: January 6, 1903
Creator: Westbrook, Nancy Z.
Object Type: Patent
System: The Portal to Texas History
Non-Skid Device (open access)

Non-Skid Device

Patent for a device that affixes to automobile wheels to provide tire traction and prevent skidding.
Date: May 24, 1921
Creator: Williams, Harry S.
Object Type: Patent
System: The Portal to Texas History

[Texas] Typical Curves of Precipitation

Series of three graphs demarcating the average rainfall per month for specific Texas cities across different regions of the state. Some lines are marked in red to distinguish individual points.
Date: 1891
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History