Mechanical ball bowler, has stop that is stressed by using constant force springs and is held by external energy, and holder provided for positioning ball with selected distance to stressed stop

摘要

The bowler has a stop that is stressed by using constant force springs and is held by external energy. A holder is provided for positioning a ball with a selected distance to the stressed stop, where the force springs permit the stop to strike against the positioned ball by neutralization of the external energy.