Balanced-Valve Testing and Locking Device. (open access)

Balanced-Valve Testing and Locking Device.

Patent for "a simple testing and locking device for balanced valves of locomotives, the testing device being so placed with relation to the valve that it may be accurately determined whether the valve on one or the other side of the engine is leaking without removing the outer plates form the valve-casing or removing the covers from the steam-chest." (Lines 8-16) Includes instructions and illustrations.
Date: June 15, 1897
Creator: Sadler, James Alexander
System: The Portal to Texas History
Mine-Sweeper and Ship-Shield (open access)

Mine-Sweeper and Ship-Shield

Patent for protecting a ship from mines with a net that serves as a "mine sweeper and ship shield" (lines 9-10). It is also for collecting underwater weapons and improving the net.
Date: October 15, 1918
Creator: Coin, James W.
System: The Portal to Texas History