CONTENTS AND LINKS
HISTORY
OF SPERRY RAIL SERVICE
HOWARD N. POTTS MEDAL AWARDED BY
THE FRANKLIN INSTITUTE
LETTERHEADS FROM OUT ON
THE ROAD
THE 'BUSINESS' ENDS OF THE RAIL TESTING
CAR.
HERE'S WHAT THE EARLY CARS LOOKED
LIKE
A MODEL OF THE INTERIOR OF A TYPICAL
RAIL TEST CAR
THE RAIL TEST UNIT ON THE TEST BENCH
FIRST DETECTOR CAR BUILT FOR THE
AMERICAN RAILWAY ASSOCIATION.
NEW YORK CITY SUBWAY DETECTION CAR
A TYPICAL INTERNAL TRANSVERSE FISSURE
THEORY OF OPERATION OF THE DETECTOR
UNIT
A PHOTO OF MY GRANDFATHER DOING
A HAND TEST
THE TAPE USED IN THE TEST RECORDER
SOME ACHIEVEMENTS MENTIONED AT RETIREMENT.
A PAPER GIVEN BY MY GRANDFATHER
DESCRIBING THE DETECTOR CAR.