Toy with propeller mounted on stick - uses notches along stick, contacted by second stick to cause propeller to rotate

摘要

The amusement device with a propeller mounted on the end of a stick, uses a second stick held in the other hand to cause the propeller to rotate. The propeller is secured by a pin to the end of the first stick, which has a series of notches across it. When the second stick is moved over the notches with sufficient force, the propeller rotates. When the notches slope in one direction, the propeller rotates in this direction, and when they slope in the opposite direction, the propeller rotates in the opposite direction.