Translations:Lever filler/1/en

Filling systems

The lever filler is probably the filling system most common among vintage pens (and has also been used, as a form of revival, by some modern manufacturers). Introduced massively to the market in 1912 by Sheaffer, who has always proclaimed its invention, it has been produced in countless variations and versions, many of which, often technically inferior, have been created only to circumvent the patent (nº US-896861) that covered the invention of Walter Sheaffer that originated in 1908.