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The mechanism was simple, functional and robust, and allowed [[Chilton]] pens to use ink sacs with significantly larger dimensions than those of competitors, so that the pens were promoted with the slogan ''Twice the ink''. However the shape of pens was not proportionate because to block on the sliding barrel the cap had to be extended over the full length of the nib section, and that should be quite long because it was used to hold the pen when filling it. So the pens were having quite an excessive cap length.

The mechanism was simple, functional and robust, and allowed [[Chilton]] pens to use ink sacs with significantly larger dimensions than those of competitors, so that the pens were promoted with the slogan ''Twice the ink''. However the shape of pens was not proportionate because to block on the sliding barrel the cap had to be extended over the full length of the nib section, and that should be quite long because it was used to hold the pen when filling it. So the pens were having quite an excessive cap length.

The first [[Chilton]] pens were made in black or [[mottled]] hard rubber, but as early as 1926  new models built in celluloid were produced, using the classic ''Jade green'' and ''Pearl Black'' colors. In these early years all [[Chilton]] production came from the Boston plant, and the models of this period are often referred to by the name of this city.

[[File:Chilton-LongIsland-JadeGreen-Capped.jpg|thumb|left|A [[Chilton]] in jade green celluloid]]

The first [[Chilton]] pens were made in black or [[mottled]] hard rubber, but as early as 1926  new models built in celluloid were produced, using the classic ''Jade green'' and ''Pearl Black'' colors. In these early years all [[Chilton]] production came from the Boston plant, and the models of this period are often referred to by the name of this city.

The first [[Chilton]] pens were made in black or [[mottled]] hard rubber, but as early as 1926  new models built in celluloid were produced, using the classic ''Jade green'' and ''Pearl Black'' colors. In these early years all [[Chilton]] production came from the Boston plant, and the models of this period are often referred to by the name of this city.