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In 1923 ''Seth Chilton Crocker'' entered directly in the fountain pen market founding in Boston a new company with its own name: the ''Chilton Pen Company''. The following year he launched the first model of the new company. It was a ordinary ''[[flattop]]'' hard rubber pen, but it was using an ingenious [[pneumatic filler|pneumatic filling system]] evolved from the ''[[blow filler]]'' invented by his father. That mechanism was essentially a precursor of the ''[[touchdown filler]]'' that [[Sheaffer]] will introduce just over 20 years later.

Around [[1920]]  ''Seth Sears Crocker'', founder of  ''[[Crocker ]]Pen Company'' left  business  and his son, ''Seth Chilton Crocker'', took over the conduct of the company. In [[1923]] ''Seth Chilton Crocker'' entered directly in the fountain pen market founding in Boston a new company with its own name: the ''Chilton Pen Company''. The following year (or in [[1925]]) he launched the first model of the new company. It was a ordinary ''[[flattop]]'' hard rubber pen, but it was using an ingenious [[pneumatic filler|pneumatic filling system]] evolved from the ''[[blow filler]]'' invented by his father. That mechanism was essentially a precursor of the ''[[touchdown filler]]'' that [[Sheaffer]] will introduce just over 20 years later.