Sectional electric drive for paper machines

This paper describes a system of electric control for sectionalized electric drive which makes use of a mechanical differential. Further, it discusses the drive of the constant-speed end of the paper machine and the general advantages of electrical sectional drive for paper mills. Some figures are given on the power consumption of several classes of mills. The type of drive described has been used for some time in Europe and Canada and it has now been successfully introduced in the United States.