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Rules for Working Speeds of Shafts

The speed of any shaft may be obtained
without ascertaining the speed of the
intermeditate shaft by the following
Rule
Multiply the number of double
strokes of the steam engine, or the
number of any given shaft per
minute by the number of teeth
in the driving wheels respectively, or
if drums or pulleys, by the inches
in the diameters respectively
or in the place they occur for a
divedend and all the driven
wheels, drums or pulleys in the
same manner for a divisior and
the quotient will be the speed
of the shaft required