Abstract: A power generating system. The system enhances output, in which a motor of about 700 W to 750 W produces horsepower to rotate a power generating unit, causing the power generating unit to produce electricity, and a transmission device is coupled between the motor and the power generating unit to increase the horsepower of the motor to the power generating unit two to three times by the application of inertia force and lever force.

Abstract: A driving system for elevators includes a cab, a pair of chain suspenders on the bottom of the cab and suspended from the roof of a building, a synchronized transmission device having a plurality of gears and chain wheels of different diameters, connected on one hand with a d/c motor and on the other hand via a pair of shafts and driving chains with chain suspenders, a plurality of retarders coupled with respective suspenders and a set of counter weights adjacent the cab and supported by a pair of pulleys on the roof of a building. This disclosure has been characterized in the structure of the synchronized transmission device which is designed as a labor saving mechanism, in addition to the installation of the retarders and the set of counter weights the cab can be operated by a d/c motor or by manual manipulation.