Editing Fountain pen (section)

===Pen leakage===
Meanwhile, many inventors turned their attention to the problem of leakage.<ref>{{cite web|last1=Binder|first1=Richard|title=Fillers: Wring It Out!|url=http://www.richardspens.com/ref/fillers/twist.htm|website=Richard Binder's Pens|accessdate=27 July 2016}}</ref> Some of the earliest solutions to this problem came in the form of a "safety" pen with a retractable point that allowed the ink reservoir to be corked like a bottle. The most successful of these came from Francis C. Brown of the Caw's Pen and Ink Co. and from Morris W. Moore of Boston.<ref>{{cite web|title=Safety Pens|url=http://www.vintagepens.com/safety_pens.shtml|website=Vintage Pens}}</ref>

In 1898, [[George Safford Parker]] released the [[Parker Jointless]], named so because its barrel was single-piece to prevent leakage. The section assembly fit into the pen's end like a cork stopper; any leaked ink was kept inside the nib.<ref>{{cite web|title=Middle-Joint, End-Joint & "Jointless" Eyedroppers|url=https://www.vintagepens.com/middle-joint_eyedroppers.shtml|website=www.vintagepens.com|accessdate=11 March 2017}}</ref>

In 1908, Waterman began marketing a popular safety pen of its own.<ref>{{cite web|title=Waterman Safeties|url=http://www.vintagepens.com/Waterman_safeties.shtml|website=Vintage Pens}}</ref> For pens with non-retractable nibs, the adoption of screw-on caps with inner caps that sealed around the nib by bearing against the front of the section effectively solved the leakage problem (such pens were also marketed as "safety pens", as with the Parker Jack Knife Safety and the Swan Safety Screw-Cap).<ref>{{cite web|last1=Binder|first1=Richard|title=Design Features: Safety Pens|url=http://www.richardspens.com/ref/design/safeties.htm|website=Richard Binder's Pens|accessdate=27 July 2016}}</ref><ref>{{cite web|title=The Mabie Todd Swan Safety Screw Cap Eyedropper Filler|url=https://goodwriterspens.com/2011/05/07/the-mabie-todd-swan-safety-screw-cap-eyedropper-filler/|website=Good Writers' Pens|accessdate=27 July 2016|date=7 May 2011}}</ref>