The Relative Proportions of the Steam-Engine: A Course of Lectures on the Steam-Engine, Delivered to the Students of Dynamical Engineering in the University of Pennsylvania (Classic Reprint) - Hardcover

William D. Marks

9780365198116: The Relative Proportions of the Steam-Engine: A Course of Lectures on the Steam-Engine, Delivered to the Students of Dynamical Engineering in the University of Pennsylvania (Classic Reprint)

Hardcover

ISBN 10: 0365198110 ISBN 13: 9780365198116

Publisher: Forgotten Books, 2018

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Practical guidance for designing steam engines, grounded in historic lectures on the single-cylinder, double-acting machine.

This edition distills William D. Marks’s course of lectures into clear, actionable rules and formulae for determining the relative proportions of steam-engined components. It emphasizes transforming theory into simple, usable design steps, with emphasis on real-world calculations and safe, efficient practice.

The book presents a practical framework for sizing and proportioning steam cylinders, pistons, connecting rods, cranks, and flywheels. It also covers standard bolt threads, valve gear considerations, and the interaction of steam pressures with machine parts. Throughout, the text aims to put thermo-dynamic and strength concepts into easily applicable form for designers and students alike.

Groundwork on how dimensions depend on boiler pressure, cylinder size, stroke length, and operating speed.
Guidance on choosing a factor of safety and translating it into usable design formulas.
Discussion of crank-shaft, connecting-rod, and bearing considerations, including journal length and lubrication concerns.
Insights into fly-wheels, cut-off, valve motion, and practical effects of design choices on engine behavior.

Ideal for readers of engineering history and practitioners seeking to ground their designs in proven, methodical reasoning.

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