Parker Pens Lucky Curve

Here's another Parker Pen ad, this one from a 1912 issue of The Saturday Evening Post. Parker's Lucky Curve was a design intended to address a fundamental problem of all fountain pens, how to get ink on the paper and not your shirt. Parker originally attempted to fix this problem with a plug that forced ink to run through a small hole and into the ink channel of the nib. By 1891 Parker rejected the plug and opted for a curved protrusion into the ink chamber dubbed the "Lucky Curve". You can learn a lot more about Parker Pens at the Parker Pens Penography site.