Edmond Halley builds the first air supplied diving bell

Edmond Halley builds the first air supplied diving bell

In 1691, Edmond Halley build a diving bell with air supplied from the surface. Extending the length of the stay. This was done using weighted barrels filled at the surface with air and then sent down. Halley and five others stayed at 18 meters for over an hour during a demonstration of his invention.