Published Resources Details Letters Patent
- Self-propelled torpedo
- United States Patent Office, 3384
Specification forming part of letters Patent No. 917,449. Application filed November 1 1907.
"This invention has for its object improvements in self-propelled torpedoes and relates more particularly to the automatic expulsion of leakage water, by utilizing the sinking valve itself, and also the protection of the gyroscope and its accessory parts from the harmful action of said leakage water…"