Method and plant in processing, particularly cutting up elongated objects such as timber

Abstract From the Canadian patent

A method and apparatus for cutting up successive blank lengths of timber by providing markings on the blank lengths for controlling cutting of the blank lengths measuring the blank lengths from the leading ends to the trailing ends thereof and storing corresponding lengthrelated pulses and sensing passage of the blank lengths past a cutting position and deducting pulses from the stored pulses to control cutting of the blank lengths at the cutting position. The advance of a terminal portion of each blank length to the cutting position and the deduction of the pulses are interrupted and are subsequently restarted only when the leading end of the next succeeding blank length is brought into …