THE INVENTION
OF THE
TRACK CIRCUIT
THE HISTORY OF
DR. WILLIAM ROBINSON'S INVENTION
OF THE TRACK CIRCUIT
THE FUNDAMENTAL UNIT WHICH MADE
POSSIBLE OUR PRESENT AUTOMATIC
BLOCK SIGNALING AND INTERLOCKING
SYSTEMS
SIGNAL SECTION
AMERICAN RAILWAY ASSOCIATION
NEW YORK 1922
PREFACE
Believing that no more fitting memorial can be prepared in honor of Dr.William Robinson than to reproduce the salient points relating to hisgreat achievement as written and published by himself in 1906 under thetitle of "History of Automatic Electric and Electrically ControlledFluid Pressure Signal Systems for Railroads," the committee hasaccordingly drawn largely from this pamphlet for the material containedin Part I.
Part II is devoted to W. A. Baldwin, formerly General Superintendent ofthe Pennsylvania Railroad, who was responsible for the firstinstallations of automatic block signals controlled by track circuits.
As this memorial would not be complete without a description of thetrack circuit, its principle and operation under present day signalingpractices, Part III is accordingly devoted to this subject.
HERBERT S. BALLIET, Chairman;
KEITH E. KELLENBERGER,
HENRY M. SPERRY,
Committee.
CONTENTS
| Resolution | 1 | |
| I | ||
| The Invention Of The Track Circuit | 3 | |
| Robinson's Patent | 42 | |
| Robinson's Description of His Invention | 50 | |
| Dr. Robinson's Record, Wesleyan University | 59 | |
| Dr. Robinson's Record, A.I.E.E. | 60 | |
| II | ||
| William A. Baldwin | 68 | |
| III | ||
| The Track Circuit | 76 | |
| Its Principle | 77 | |
| Its Characteristics | 85 | |
| The Extent of its Use | 98 | |
| IV | ||
| The Track Circuit in Great Britain and on rhe Continent, by T. S. Lascelles | ... BU KİTABI OKUMAK İÇİN ÜYE OLUN VEYA GİRİŞ YAPIN!Sitemize Üyelik ÜCRETSİZDİR! | |