A pressing machine (10, 64, 66) comprising: a plurality of crankshafts each of which has two co-axially disposed main shaft portions and an eccentric shaft portion disposed between and eccentrically with respect to the two main shaft portions, and which are rotatably supported at their main shaft portions by a frame, such that their axial directions are parallel to each other, and such that they are spaced apart from each other with a predetermined distance therebetween; connecting rods connected at one of their opposite end portions to the eccentric shaft portions of said plurality of crankshafts; a slider connected to the other end portions of said connecting rods, and reciprocated by displacements of said eccentric shaft portions caused by rotary motions of said plurality of crankshafts about respective axes of their main shaft portions; at least one first connection lever attached to said eccentric shaft portions of said plurality of crankshafts, for transmitting a rotary driving force transmitted to one of said plurality of crankshafts to another of the plurality of crankshafts, so that the plurality of crankshafts are rotated in synchronization with each other; characterized by: eccentric levers each provided on an axial end portion of one of said two main shaft portions of the respective crankshafts, which axial end portion outwardly projects from said frame, such that the eccentric levers extend in a direction perpendicular to axial directions of said main shaft portions; pins provided so as to project from the respective eccentric levers in a direction parallel to the axial directions of said main shaft portions, and such that positions of the pins as seen in a circumferential direction of said main shaft portions are different from those of said eccentric shaft portions, and such that distal end portions of the pins are located axially outwardly of corresponding ends of the respective crankshafts; and a second connection lever attached to said distal end portions of the respective pins, whereby said rotary driving force is smoothly transmitted to said another of the plurality of crankshafts by cooperating actions of said at least one first connection lever and said second connection lever. a plurality of crankshafts each of which has two co-axially disposed main shaft portions and an eccentric shaft portion disposed between and eccentrically with respect to the two main shaft portions, and which are rotatably supported at their main shaft portions by a frame, such that their axial directions are parallel to each other, and such that they are spaced apart from each other with a predetermined distance therebetween; connecting rods connected at one of their opposite end portions to the eccentric shaft portions of said plurality of crankshafts; a slider connected to the other end portions of said connecting rods, and reciprocated by displacements of said eccentric shaft portions caused by rotary motions of said plurality of crankshafts about respective axes of their main shaft portions; at least one first connection lever attached to said eccentric shaft portions of said plurality of crankshafts, for transmitting a rotary driving force transmitted to one of said plurality of crankshafts to another of the plurality of crankshafts, so that the plurality of crankshafts are rotated in synchronization with each other; characterized by: eccentric levers each provided on an axial end portion of one of said two main shaft portions of the respective crankshafts, which axial end portion outwardly projects from said frame, such that the eccentric levers extend in a direction perpendicular to axial directions of said main shaft portions; pins provided so as to project from the respective eccentric levers in a direction parallel to the axial directions of said main shaft portions, and such that positions of the pins as seen in a circumferential direction of said main shaft portions are different from those of said eccentric shaft portions, and such that distal end portions of the pins are located axially outwardly of corresponding ends of the respective crankshafts; and a second connection lever attached to said distal end portions of the respective pins, whereby said rotary driving force is smoothly transmitted to said another of the plurality of crankshafts by cooperating actions of said at least one first connection lever and said second connection lever.