PURPOSE: To raise the extent of load in generating powerful force by connecting two horizontal rods into a dogleg-shaped form, while making the end on one side so as to be pivoted and the end on the other to be slidable respectively, and giving such a motion as crushing a dogleg crest by adding the force to the connecting point.

CONSTITUTION: When a shaft 2 and a gear 3 attached to a gear 1 are rotated clockwise, a shaft 6 attached to a gear 4 in mesh, a disk 5, a shaft 9 being engaged with a gear 7 in mesh with the gear 3 and a disk 8 are all rotated counterclockwise, and wedged tight to gears 4, 7 and disks 5, 8. Each of connecting plates 14, 15, 16, 17 performs an up-and-down motion, and since the other end is pivotally attached to connecting plates 42, 43, 44, 45 of two horizontal rods, they all perform the vertical motion together. Powerful force is produced in each sliding end of these two horizontal rods 18, 19, 20, 21, through which connecting rods 26, 27, 28, 29, disks 23, 25 and gears 22, 24 are rotated counterclockwise. Four sliding ends 4 of the two horizontal rods, these gears 23, 25 and gears 22, 24 are all rotated clockwise as changing each position vertically and crosswise at all times together with these four connecting rods 4 where there is a difference in angles as far as 90 degrees with one another. A hoisting disk 41 being attached to a shaft 38 rotates clockwise, hoisting a rope 50 and lifting a load 51.