Patent ID: 8776572

Claim:
A necking machine ( 1 ) for containers comprising: a machine housing: a tool carrier ( 7 ) supported for axial displacement on the machine housing: a plurality of processing stations on the tool carrier ( 7 ) that process necks of the containers, a drive train including a drive motor and a crank drive having a connecting rod ( 17 ) connected to a crankshaft ( 25 ) supported in the machine housing in active connection with the tool carrier ( 7 ) that generates an axial stroke of the tool carrier relative to a work-piece carrier ( 13 ) located on the machine housing, the axial stroke having a dwell time during which the processing stations process the necks of the containers, and a gear having a non-constant transmission ratio located in the drive train of the crankshaft ( 25 ) between the drive motor ( 19 ) and the crankshaft ( 25 ), the non-constant transmission ratio controls the dwell time.