Danbury Railway Museum
Dr. Sperry began developing a method of locating internal rail defects in 1911. To build a railway test car he contracted with the American Railway Association in 1927. Construction on this first car began in June 1927. The body was metal-faced plywood, and was mounted on a Kalamazoo motor car bed. This car was towed by a larger motor car. After completion, it was delivered December 17, 1927, for performing tests. An operator, lying flat on his stomach as he was moved along on a hand car, held a 'search unit' against the rail. Both fissures were found, but serious difficulties were encountered during the test. This method also posed problems due to uneven rail surfaces.
Size: 5451px × 3624px
Location: Danbury, CT, United States
Photo credit: © Popupphoto / Alamy / Afripics
License: Royalty Free
Model Released: No
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