At this time, fountain pens were virtually all crammed by unscrewing a portion of the hole barrel or holder and inserting the ink by the use of an eyedropper – a slow and messy process. Pens also tended to leak inside their caps and at the titanium bike joint the place the barrel opened for filling. Self-fillers began to reach around the turn of the century; essentially the most profitable of these was in all probability the Conklin crescent-filler, adopted by A. The tipping point, however, was the runaway success of Walter A. Sheaffer's lever-filler, introduced in 1912, paralleled by Parker's roughly contemporary button-filler.
At this time, fountain pens were virtually all crammed by unscrewing a portion of the hole barrel or holder and inserting the ink by the use of an eyedropper – a slow and messy process. Pens also tended to leak inside their caps and at the titanium bike joint the place the barrel opened for filling. Self-fillers began to reach around the turn of the century; essentially the most profitable of these was in all probability the Conklin crescent-filler, adopted by A. The tipping point, however, was the runaway success of Walter A. Sheaffer's lever-filler, introduced in 1912, paralleled by Parker's roughly contemporary button-filler.
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