Abstract: This invention relates to an automatic film feed register device for feeding film to a bag manufacturing device, in which setting of the film intermittent feeding pitch can be done by a keyboard of a microcomputer by an unskilled worker not withstanding whether the machine is operating or stopped. The machine has intermittent feed rollers for a film, a crank connected to the feed rollers through an electromagnetic brake and an electromagnetic clutch, a device shaft for said crank, and an adjusting device for adjusting the eccentric distance of the crank, characterized by an adding mechanism provided between the drive shaft and the adjusting device for adjusting the eccentric distance of the crank. The motion of a drive shaft is controlled by a microcomputer input into the adding mechanism.