PURPOSE:To aim at the promotion of energy saving, by installing the moving cylinder installed in an inner cylinder, various blocks pressurizing a spring by movement of this moving cylinder and interlocking devices interposingly between both inner and outer cylinder, and making motive power generated in use of force of the pressurized spring. CONSTITUTION:There are provided with both inner and outer cylinders 14 and 18 directly clamped with each other, and a tapered moving cylinder 13 is installed in this inner cylinder 14 free of movement. With movement of this moving cylinder 13, a starting block 1 and a drilling block 2 are moved outward from each dotted line position together with a planetary block 24, and an interlocking kever spring 7 and a backstop lever spring 8 are simultaneously pressurized by this movement via a starting lever 3 and a balance lever 4. At this time, the fulcrum block 17 pivotally supported in an intermediate part of the balance lever 4 is made possible to bring its reversing force into full play, then this reversing force is offset by dint of normal turning force acting on a compensating lever 6. And, pressure of the interlocking lever spring 7 is transmitted to a power wheel 12, and the pressure is made so as to be added to main block 11 via a power arm 16.
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