Timeline Of Diving Technology
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the MK V is finalized however, several more design improvements are made over the next two years.
1916: The Draeger model DM 2 becomes standard equipment of the German Navy.
1917 The Bureau of Construction & Repair introduces the MK V helmet and dress, which then becomes the standard for US Navy diving until the introduction of the MK 12 in the late seventies
1918: Ohgushi (he was Japanese) patents “Ohgushi’s Peerless Respirator”. It was a constant-flow diving and industrial open-circuit breathing set. The user breathed through his nose and switched the air on and off with his teeth.
Around 1920: Hanseatischen Apparatebau-Gesellschaft make a 2-cylinder breathing apparatus with double-lever single-stage demand valve and single wide corrugated breathing tube with
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