The diving helmet was an outgrowth of the diving bell. The problem of supplying compressed air to divers was not solved until, in the early 1700's, English astronomer Edmond Hally had casks of air hauled down to the diving bell where it was hose fed to helmeted divers.
In 1819 a helmet with pumped air was introduced and the helmet and suit became the standard diving dress.
Solid 9ct Gold
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