60 in such a state in which the fixed shaft 72 is received in the groove 75 the trailing edge of the sloping plane 73 serves as a locking flange 71 so that the fixed shaft 72 does not deviate from the groove 75 unless the locking member 59 rotates in a direction indicated by an arrow d eventually as the vertical cover plate 51 rotates downward the locking member 59 is locked and supported to the fixed shaft 72 so that the vertical cover plate 51 is fixed to the frame 10 in order to lift the vertical cover plate 51 upward a knob 55 is lifted in a direction indicated by an arrow b as shown in fig2 to make the fixed shaft 72 deviate from the groove 75 and then the cover member 58 rotates upward in other words in the event that a jam occurs between the vertical cover plate 51 and the driving rollers 12 a banknote jammed inside the vertical cover plate 51 can be simply eliminated by lifting the knob 55 in the direction indicated by an arrow b 0066 fig8 is an exploded perspective view illustrating a state in which an upper cover plate 63 of the atm according to the present invention is rotated upward referring to fig8 a plurality of driving shafts 74 and a plurality of fixed shafts 76.