Resource Type

Bit. (open access)

Bit.

Patent for a bridle bit that helps a handler to hold or guide an animal without harming its mouth. Illustration included.
Date: August 21, 1900
Creator: Castro, Alberto
System: The Portal to Texas History
Automatic Railway-Switch. (open access)

Automatic Railway-Switch.

Patent for new and useful Improvements in Automatic Railway-Switches, "particularly to automatic railway switches for use in street railways or steam railways" (lines 13-15), including instructions and illustrations.
Date: August 21, 1917
Creator: Eisenberg, Louis
System: The Portal to Texas History
Traffic-Signal. (open access)

Traffic-Signal.

Patent for a traffic signal apparatus for installation in automobiles, including illustrations.
Date: August 21, 1917
Creator: Valdes, Salvador M.
System: The Portal to Texas History