Translations:Leverless filler/1/en

The leverless filling system was adopted by Swan in 1932 for the models of the same name, and its use was mainly dictated by aesthetic reasons. It is essentially a variant of the twist filler in which however the tank is realized with a rubber bag as in the ordinary lever loading and the comprehension torsion happens through an eccentric bar anchored to the bottom of the pen that in position of rest remains lateral, whose rotation involves a torsion applied laterally to the bag with the relative wringing.