0 a bell-shaped metal container without a base that is supplied with air so that a person can work in deep water
The diving bell, which uses outside water pressure to keep air inside it, was mentioned by Aristotle in the 4th century BCE.
He made a descent in a diving bell, which was used to try to reach wrecked treasure ships.
I am not sure but the diving bell is getting somewhat out of use now.
So he had decided to remove such obstructions at the proper moment through divers or a diving bell.
The first diving bell we read of was a very large kettle suspended by ropes with the mouth downwards, and planks fixed in the middle of its concavity.
We saw a diving bell in the great hall, which is frequently put into action, and visitors are allowed to descend.
Suddenly the diving bell is brought up without gradual decompression and there is an explosion.
They were operating from a diving bell at a depth of 78 metres when the weights on the bell broke away.
