Submarine Appliances And Their Uses
Deep Sea Diving, &c., &c.
Forfatter: R. H. Davis
År: 1911
Forlag: Siebe, Gorman & Co., Ltd.
Sted: London
Sider: 183
UDK: 626.02
A Diving Manual
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Photo No. 17.
SINGLE DIVER TELEPHONE.
The electric cable is in the centre of the signal line. When using the telephone
gear, the plug fitted to one end of the life-line is attached to the connection on the
battery box, the other end is attached to the connection on the helmet; the diver’s re-
ceiver is fitted in the top of the helmet, inside, and his transmitter on the right-hand side
of the helmet. The diver, when speaking, should turn his head slightly to the right, and
talk slowly and distinctly in a moderate voice. He should not shout. The telephone
must be handled with care, especially when passing it into or out of boats. 1 he box must
be kept dry. After much use, the battery becomes exhausted, when the cells should be
renewed.
Telephone (Double diver type), Photo No. i8.—With two divers under water,
the attendant is enabled to converse with either or both of them, and the divers them-
selves can also talk to one another, their conversation being- audible to the attendant.