The Montgolfier Balloon.

Montgolfier

The Montgolfier Balloon.

"Invented by Montgolfier in 1796, this only allows water to pass when the current is steady, or still, and closes when there are spurts." -Comstock 1850

Water Ram

"Invented by Montgolfier in 1796, this only allows water to pass when the current is steady, or still,…