Lock. (open access)

Lock.

Patent for a keyed lock with "an improved mounting and arrangement of the locking tumblers whereby the same are properly held against displacement within the body of the lock so that they will properly engage with the locking bolt."
Date: July 13, 1915
Creator: Dunaway, Harrison
System: The Portal to Texas History
Track-Cleaner. (open access)

Track-Cleaner.

Patent for a track cleaner "particularly adapted for use in saw mills, planing mills and the like, where it is necessary to keep tracks clear of shavings, saw dust and the like" (lines 15-18), includes illustrations.
Date: July 27, 1915
Creator: Lynch, Charley W.
System: The Portal to Texas History