Translations:Cappuccio/12/en

A second role played by the cap is to keep the environment around the nib well circumscribed, with the pen closed, so that the ink present on it does not dry out (causing a difficulty in restarting) on the one hand but does not even undergo pressure changes that can cause ink to escape. For this reason, there are both ventilated caps (with the presence of ventilation holes) and caps that are completely sealed. In particular, at the beginning of the 1900s, in order to guarantee against the loss of ink, the presence of a second inner cap began to be introduced as a constitutive part of many caps (significant patents nº US-764227 and nº US-1028382), which encloses the part on which the section is bent and isolates it from the rest of the cap, guaranteeing the seal of the ink. Sometimes this same element is also used as a locking component in the assembly of the clip, which can be mounted in a ring on the same, or wedged between the cap and inner cap by means of a lateral slot.