B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
B41B7/00—Kinds or types of apparatus for mechanical composition in which the type is cast or moulded from matrices
B41B7/02—Kinds or types of apparatus for mechanical composition in which the type is cast or moulded from matrices operating with fixed combinations of matrices
B41B7/04—Kinds or types of apparatus for mechanical composition in which the type is cast or moulded from matrices operating with fixed combinations of matrices for casting individual characters or spaces, e.g. type casting machines
Compresseur à soupape d'aspiration, augmentant le débit effectif de la soupape, réduisant la chute de pression et le volume restant au point mort haut du cylindre.