Wiktionary
diving bells
n. (diving bell English)
Usage examples of "diving bells".
The Russians are co-operating with us, but they don't have time for a rescue with their diving bells: the water's too deep and the weather's not yet fined up sufficiently for their support vessel.
You knew where the treasure was, but you couldn't get your hands on it -- anyone who started using diving bells and all the complicated recovery gear necessary for a job like this would have been putting a noose round his own neck.
A nurse waited in the hall, and she briskly walked me past the surgery room, then walls of autoclaves that reminded me of steel diving bells, the air foul with the stench of scalded laboratory animals.