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Details of Link. A, Side View of Link. B, Edge View of Link. C, Side View of Link Block. D, Edge View of Link Block. 1a, 1b, Link Piece. 2a, 2b, Link Bracket Pieces. 3a, 36, Link Fulcrum Pin, or Link

Trunnion. 4a, 46, Link-Foot Pin Hole. 50, 56, Top Oil Well. 6a, Outlines of Link Slot. 7a, 7b, Port Holes in Bracket Pieces. 8c, 8d, Link-Block Pin Hole. 90, 9d, Link-Block Oil Well.

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Other Modern Radial Valve
Gears for Locomotives

A PRACTICAL TREATISE ON THE LOCOMOTIVE VALVE

ACTUATING MECHANISM INVENTED BY

EGIDE WALSCHAERT
With the History of Its Development and Its Evolution into
the Mechanically Correct Locomotive Valve

Gear of the Present Day.
IN FIVE GENERAL DIVISIONS, EMBRACING :
Analysis of the Walschaert Valve Motion.-Designing and Erect-
ing the Gear.-Proofs of the Superiority of the Walschaert
Gear in Locomotive Service. — Catechal Questions

and Answers for Instruction and Examination.
Modern Radial Valve Gears Other than the Walschaert, with Full
Explanations, and Questions and Answers relative to Break-

downs and their Repair of such Gears, while on the Road.

BY W.W.WOOD, Air Brake Inspector

SCIENCE

THIRD EDITION, REVISED AND ENLARGED
Fully Illustrated with Sketches and Diagrams and Containing
Large Folding Plates and Diagrams of Different Types of the
Walschaert and Other Radial Valve Motions, with Mov-

able Cardboard Working Models of the Valves.

NEW YORK
THE NORMAN W. HENLEY PUBLISHING CO.
132 Nassau Street

1912

COPYRIGHT 1906 AND 1912

BY

THE NORMAN W. HENLEY PUBLISHING CO.

Composition, Printing and Electrotyping by
PUBLISHERS PRINTING COMPANY, New York, U. S. A.

SPECHI

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