Compressed Air Work And Diving 1909
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CHAPTER III.
The Common Diving Dress and Helmet.
1 he first practicable diving' dress was invented by Mr
Augustus Siebe in the year 1828, and consisted of a
helmet and short jacket, coming down to the waist, below
which the air escapecl after the manner of a diving beil.
The inconvenience of this dress is of course apparent,
and lies in the faet that the diver cannot stoop to his
work, but must for safety remain almost upright. As a
result Mr Siebe, whilst engaged on the wreck of the
“Royal George,” invented, in 1839, the closecl type of
dress, and this dress with very few modifications has
remained in use in this country ever since.
I he dress is made of strong waterproofed canvas in
one piece, and the only openings are at the wrists and
at the neck, where the breastplate is attached. The
wrist-bancls aie made of stout vulcanised rubber, which,
when the diver has the dress on, tig’htly grip the wrists.
I he water is prevented from entering when the diver’s
arms are below the level of the helmet, by the faet that
the pressure of the water causes the dress to cling tightly
round the divers arms, and when he raises his arms to
the level of his helmet, by the pressure of the air inside
the dress. When the diver lifts his arms up above his
head, the slceves hil with air, a,nd air will escape in
bubbles at his wrists. No water can, however, enter, as