Abstract: Rolls having an elasticity on their outer periphery are used in corrugated fibreboard producing and processing machines. Tubes or tubular sheet adapted to be inflated with gas, elastic cords or strings, elastic tubular sheets, or tubular sheets with air bubbles thereon or therein are used to at least partially cover the outer surface of the rolls, thus giving the rolls an elasticity.

Abstract: An improved single facer is proposed which is provided with a control system for automatically controlling the gap between the lower corrugating roll and the glue roll and/or that between the former and the press roll according to the thickness of the material passing between them. The thickness of the material and the gap between the rolls are detected and an electrical signal proportional to the difference between them is given to a drive motor, which moves the glue roll and/or the press roll toward and away from the lower corrugating roll.

Abstract: A blank feeding apparatus for feeding blanks one after another from a stack of blanks to the next processing rolls. Blanks are pushed by kickers attached to an endless conveyor. The motor for driving the conveyor is electronically controlled so that one cycle of kicker operation will be completed while the processing rolls make a full rotation, said one cycle including the acceleration tuned-run and deceleration steps.

Abstract: A process and an apparatus for splicing a web of paper being continuously supplied without decelerating the machine speed and with a minimum of material loss.A new paper web is spliced to the old paper web with adhesive tape and the old paper is cut off just behind the spliced point by means of a plate member which cooperates with a fixed blade provided along the run of the spliced paper.

Abstract: A method for controlling the speed of a rotary cutter to cut a continuously ed web accurately into predetermined lengths. A desired cutting length and the circumference of the rotary cutter are preset. The web speed as detected is multiplied by a coefficient equal to the cutter circumference divided by the cutting length. The resultant signal is compared with the cutter speed as detected, and, if there is any difference, the cutter speed is corrected for accurate cutting.

Abstract: A blank feeding machine having a pivoting frame provided with kickers to push up the blanks stacked thereon. It requires only a minimum amount of labor to feed the blanks e.g. to the hopper of a printer even if they are stacked in bundles with face up and down alternately. The machine also includes a mechanism for automatically discharging the blanks from the pivoting frame onto a belt conveyor if they are stacked in uniform orientation.

Abstract: A web cutting control system controlling the speed of a rotary cutter for automatic, continuous and precise cutting of a web fed at a constant speed into predetermined lengths or on the marks on the web. Two transducers generate pulses the number of which corresponds to the web feed length and the rotating angle of the rotary cutter, respectively. Three sensors detect the marks on the web, the completion of cutting, and the arrival of the cutter blades, respectively, to control the flow of signals. A desired cutting length or the distance between the mark detection point and the point of completion of cutting is preset. A reversible counter receives the pulses from these two transducers and the difference signal between the preset value and a reference signal and performs reversible counting thereof, the result of which is used to control the speed of motor for the rotary cutter to bring its speed into synchronization with the web feed speed for accurate cutting.