The component referenced controls the mechanism for filling certain fountain pens with ink. By manipulating this part, a vacuum is created within the pen’s ink chamber, drawing ink into the reservoir from a source. For instance, in a piston-filling pen, actuating this mechanism retracts the piston, generating suction that pulls ink inside.
This filling system offers a convenient and efficient method for replenishing the pen’s ink supply directly from a bottle. Its design minimizes the need for separate cartridges or converters, contributing to reduced waste and a more sustainable writing practice. Historically, this type of filling system represented a significant advancement in fountain pen technology, allowing for greater ink capacity and ease of use.
