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== History ==
 
== History ==
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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.
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.
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The [[pneumatic filler|pneumatic filling system]] used by [[Chilton]] is based on compression made by sliding the outside shaft of the pen over a internal metal cylinder which encloses the ink sac like a pump piston. The sliding barrel is equipped with a hole on the bottom that must be hold closed with a finger in the process of pushing it down for compression, but once opened it allow the expansion of the ink sac and the subsequent filling.
 
The [[pneumatic filler|pneumatic filling system]] used by [[Chilton]] is based on compression made by sliding the outside shaft of the pen over a internal metal cylinder which encloses the ink sac like a pump piston. The sliding barrel is equipped with a hole on the bottom that must be hold closed with a finger in the process of pushing it down for compression, but once opened it allow the expansion of the ink sac and the subsequent filling.