Published Resources Details Letters Patent
- Improvement in submarine torpedoes
- United states Patent Office, 3 May 1870
Letters Patent No. 102,556.
"The object of my invention is to cause submarine projectiles, whether propelled by power residing within themselves as compressed air, mainspring, or rocket composition of any kind, or wether they are projected from a gun, to move parallel with the surface of the water, or, in other words, to keep at a uniform distance below the surface, this distance being adjusted by the operator before the projectile is started."