1503437 Feeding and bursting perforated webs AMERICAN/DUREIN CO 9 July 1976 [30 July 1975] 28703/76 Heading B8R [Also in Division B4] As perforate web 33 is fed towards adjustable burster bar 47 and snap rollers 29, 31 it passes between feed rollers 25, 27, the uppermost of which is divided into two sections 63, 65, each having two round faces and two parallel flat faces, and the two sets of flat faces being offset 90 degrees. If the web skews it is preferentially driven on its lagging side and is therefore straightened.
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机译：1503437送入和破裂多孔纸幅AMERICAN / DUREIN CO 1976年7月9日[1975年7月30日]标题B8R [也在B4分区中]当多孔纸幅33被送入可调式破碎机杆47和快速辊29、31时，它在进料之间通过辊25、27的最上端被分成两个部分63、65，每个部分具有两个圆面和两个平行的平坦面，并且两组平坦面偏移90度。如果幅材倾斜，则幅材优先在其滞后侧被驱动，因此被拉直。
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