COMBINATION MANUAL AND AUTOMATIC RELEASE DEVICES FOR LAUNCHING FLOATS, LIFE-RAFTS, BOATS OR OTHER GEAR FROM DAMAGED, SINKING OR SUBMERGED SHIPS, SAID DEVICES FEATURING MAIN LASHING PLATE BRACKET AND CHAMBER BODY RIVETED AS A UNIT, DIAPHRAGM ASSEMBLY, PULLPIN AND UNCOUPLING BRACKET, ALL SOLD AS A MARINE HARDWARE UNIT