Patent ID: 7097079

Claim:
An automatic dosing device for a machine comprising: a container ( 27 ) for dosing material; a dosing screw ( 1 ) that feeds material out from the container, wherein the screw ( 1 ) is rotatably attached to the container ( 27 ) and interacts with a channel ( 26 ) that connects an inside ( 29 ) of the container ( 27 ) with an outside of the container ( 27 ); and a sealing member ( 13 , 14 ), which by a force transmitted to the sealing member from the thread ( 4 ) of the screw ( 1 ), seals or opens an outlet ( 30 ) of the channel ( 26 ), the outlet ( 30 ) facing the container outside; wherein at least a part of the sealing member ( 13 , 14 ) seals and opens the outlet by moving in a first or a second direction parallel to the direction of the screw ( 1 ).