Fountain Pens Filling  System

The button-filler is a very simple design that actually works very much the same way a lever-fill pen works. Inside the barrel is a long sac that holds the ink. Alongside the sac inside the barrel is a long flat springy bar that bends at the base of the barrel and terminates into the back of the button. When the button is pressed, the bar is bent inward and compresses the sac, expelling its contents. As it reinflates, if the nib and feed are in ink, the vacuum created will fill it. A lever-fill pen does the same job by directly pressing the bar from the side of the barrel.

The process is straightforward: remove the end cap, dip the nib in ink, press the button once, count to ten, and remove the nib and wipe.

Easy to clean. Put the nib in a glass of cold water and push the button several times, change the water and repeat till all the ink is flushed out.