Diving apparatus. Mid-19th century

An apparatus has also been devised to enable a person to quit the diving bell, and remove to a considerable distance when requisite, and still to receive the necessary supply of air. It consists of a copper helmet, fitting water-tight to the shoulders of the wearer, and furnished with a mouth piece, to which is attached a flexible hose, reaching under the bell; but recently a patent has been obtained by Mr. W. H. James for a somewhat similar apparatus, by which a diver can carry on the necessary operations independently of a diving bell. The diver is attired with a portable vessel (placed around and adapted to the figure of his body,) which is filled with condensed atmospheric air; and by means of a simple arrangement of pipes, and judiciously constructed valves, he is enabled to supply himself with fresh air for respiration during the time he is under water. In the two accompanying figures, the letters in each refer to the same parts. (The Engineer’s and Mechanic’s Encyclopedia, 1835)

See also:
Moran’s patented fire-mask

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