Resource Type

Car Coupling (open access)

Car Coupling

Patent for train car coupling. Illustration included.
Date: January 17, 1905
Creator: Jones, Evan S.
System: The Portal to Texas History
Envelop. (open access)

Envelop.

Patent for an envelope that employs a lock and seal mechanism to increase security of contents. The envelope cannot be opened without tampering or mutilating the envelope.
Date: January 26, 1915
Creator: Wallace, Curtis C.
System: The Portal to Texas History
Cotton Chopper (open access)

Cotton Chopper

Patent for Cotton Chopper
Date: January 2, 1917
Creator: Wills, Saladin H.
System: The Portal to Texas History