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History of the Atlantic Cable & Undersea Communications
from the first submarine cable of 1850 to the worldwide fiber optic network

The Recent Soundings for the Atlantic Telegraph
Illustrated London News, 13 September 1856

PATENT SOUNDING APPARATUS.

A. Patent sounding apparatus which records upon a dial the depth attained. The fly and train of wheels are locked the moment the descent is completed.

a. Small cords at the end of the sounding line fastened to the movable arms on which are the hooks (b b); to these are attached the looped wires (c c) which support the bottom plate (d) on which the lead rests.

e. Brass rod passing through a hole in the centre of the lead (f), at the bottom of this rod is a small cavity into which are inserted, open-mouthed, as many quills (g) as it will contain.


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Last revised: 3 June, 2010

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