percussion cap and fire the powder. The mind than his steamboat. On one occasion he invit- machine is anchored, presenting the prongs on the ed the City Fathers of New York, and a large num- upper end of the lever in such a way that boats going ber of prominent citizens, naval and marine officers,… … ted at the same depth. With such a battery he A is an iron rod armed with prongs to fasten upon proposed to fire into the hulls of enemies' war ves- the bottom of boats going upstream, and acts upon sels under their water-lines, and thus sink them. B, a lever connecting with a trigger, to explode a…
Combination · Patents · Claim · Constructed · Improvement · Purpose · Purpose set · Manner · Navy shells · Grass harvesting · Purposes set · Address munn · Finger bar · Drag bar · Patent office · Scientific American · Cutting apparatus
Internet Archive · Public domain (published before 1931). Free to use for anything.
