Resource Type

Intrenching-Tool. (open access)

Intrenching-Tool.

Patent for certain new and useful improvements in intrenching tools, including instructions and illustrations.
Date: August 8, 1899
Creator: Hoffmann, Arnold G.
System: The Portal to Texas History
Improvement In Padlocks. (open access)

Improvement In Padlocks.

Patent for improvements to Padlocks which can be opened with a key in conjunction with maneuvering the tumblers or locking-bolt.
Date: August 14, 1878
Creator: Jacobs, Morris
System: The Portal to Texas History