124 / | HD | MECHANICAL GUNS AND PROJECTORS |
56 | DF | FLUID PRESSURE {9} |
71 | DF | .~ With control for discharge of fluid pressure {2} |
73 | .~.~ By valve means {4} | |
74 | DF | .~.~.~> For discharge of pressure from removably mounted cartridge |
75 | DF | .~.~.~> Opened by fluid pressure-actuated means |
76 | DF | .~.~.~> Opened by spring-actuated means |
77 | DF | .~.~.~> Opened by electrically actuated means |