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This is a history book on the development of rotary motion from reciprocating engines. The author researched and made working models of quite a few early engines. This book describes how the early engineers developed rotary motion, and is of interest to the steam engine enthusiast and model engine maker alike.

The history of two engines are described in this book. One is the first engine in the world to achieve rotary motion by use of a crank and flywheel, and the other was the first to use a governor to control the speed.

The Contents are:

• How it all began
• Rotation by a crank and flywheel
• Constructional details
• The main structural parts
• The Boulton and Watt Lap Engine of 1788
• The formation of a vacuum
• Straight line movement from a piston rod
• Rotary motion sun and planet gears
• How the engine was assembled
• Operating instructions
• James Watt and his life in retirement
• Soho Manufactory pictorial

Code No. 009664, 146 pages, ISBN 1857611195, $35.00

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