Application of electric drive to paper calenders

Motors have been used in paper mills for the last twenty years and have been applied with success to every machine used in the process of making paper. By means of motors it has been possible to study the power requirements of various machines and much useful information has been obtained for the manufacturer of the paper, of the machine, and of the motor. As far as the writer knows, very little of this information has been published and it is the intention of this paper to set forth facts that have been observed and state the possible laws that may be deduced from these facts. This paper is confined to the finishing department of the paper mill and more particularly to the motor drives for three types of paper calenders.