Waterman's New Fountain pen
Today's writing
This is what you can get if you buy one of Waterman's pens in 1884
Waterman made his own pens after being humiliated by one. He had made his own patent (1884) that had air to constantly flow when the ink flowed, resulting for it not to spill ink everywhere.
Using Gravity
Fountain Pens 101 Facts & How it Works | PensAndLeather.com