dip pen vs stylograph

dip pen

noun
  • A kind of pen consisting of a nib with capillary channels like those of a fountain pen, mounted in a handle or holder. 

stylograph

noun
  • A fountain pen that has a thin hollow tube or needle instead of a nib, and which releases ink when pressed against the paper. 

How often have the words dip pen and stylograph occurred in a corpus of books? (source: Google Ngram Viewer )