To convert the energy of a spring into a rotational energy for use.

This mechanism is used for utilizing the energy of the spring converted into the rotational energy by applying the principle of leverage to a rotating body as an assistance power. Since the mechanism is used in a large-sized power machine with small rotational speed, and as necessary, can increase the rotational speed, it can be utilized in a wide variety of purposes. Though a specific energy measurement is not performed by this invention, since the invention uses the principle of leverage, it can certainly save an energy 10 to 15% more in comparison with existing mechanisms.