The following discussion is confined mostly to
that type of machine in which the squirrel care revolving
secondary it used. In its most primitive form it con -
listed simply of a disk- aramature as described by Baily
in 1870 and due to Tesla (1888), of the fact that two,...
Published January 1901. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog