Modifiche

However, there are also drawbacks: first of all, the size of the tank decreases, since the space inside the barrel of the pen must contain it, along with all that is necessary for the compression system. Moreover, the sacs tend to deteriorate, breaking or losing their elasticity, and must be replaced, thus introducing a whole series of maintenance problems. Finally, the complexity of the construction increases considerably, and with it the possibility of failure.

However, there are also drawbacks: first of all, the size of the tank decreases, since the space inside the barrel of the pen must contain it, along with all that is necessary for the compression system. Moreover, the sacs tend to deteriorate, breaking or losing their elasticity, and must be replaced, thus introducing a whole series of maintenance problems. Finally, the complexity of the construction increases considerably, and with it the possibility of failure.

In questa seconda sezione si sono raccolti tutti i sistemi di caricamento più semplici e primitivi che prevedono una qualche forma di azione di compressione meccanica eseguita direttamente sul serbatoio in gomma. o meglio sulla cosiddetta ''[[pressure bar]]'' una barretta metallica (in italiano sarebbe chiamata ''barretta di compressione'') che viene appoggiata (o incollata) sul sacchetto in modo da consentire di applicare la compressione sullo stesso in maniera uniforme.

In this second section we have collected all the simplest and most primitive filling systems that provide some form of mechanical compression action performed directly on the rubber sac, or better, on the so-called ''[[pressure bar]]'' a metal bar that is placed (or glued) on the sac to allow you to apply the compression to it in a uniform manner.

=== ''[[crescent filler]]'' ===

=== ''[[crescent filler]]'' ===