Descriptive Pamphlet of the Richmond Mill Furnishing Works / All sizes of mill stones and complete grinding and bolting combined husk or portable flouring mills, portable corn and feed mills; smut and separating machines; zigzag and oat separators, dustless separators, warehouse separators, water wheels; mill shafting; pulleys; spur and bevel, iron and core, gearing....

by Richmond Mill Furnishing Works

Rules to Find the Speed of Pulleys and Gearing.

PROBLEM I.

The diameter of the driven pulley or wheel being given, to find its number of revolutions.

Rule—Multiply the diameter of the driver by its number of revolutions, and divide the product by the diameter of the driven: the quotient will be the number of revolutions of the driven.

PROBLEM II.

The diameter and revolutions of the driver being given, to find the diameter of the driven:

Rule—Multiply the diameter of the driver by its number of revolutions, and divide the product by the number of revolutions of the driven: the quotient will be its diameter.

PROBLEM III.

To ascertain the size of the driver:

Rule—Multiply the diameter of the driven by the number of revolutions you wish to make, and divide the product by the revolutions of the driver: the quotient will be the size of the driver.