The patent of this sausage pusher comes certainly from the company Hulesch and Quenzel. If the ram fully retracted, there still remain about 500 gr. Sausage mixture in the cylinder, this is due to the conical inlet toward spout. Small Caliber and compact masses sausage (Wiener, Frankfurterwürtse etc.) can not fill up, the plastic does not because. If there is air in the sausage mixture this is also a mess, other machines remove the air in compressing the mass. Air in the sausage can draw implications for health, in the production of long-life sausages can thus be at least very cheap Botox manufacture. Buy prefer a model made of chrome steel that the air is removed during compression of the sausage mixture, I will do this in any case.