Abt system

\ ˈäp(t)ˌs-, ˈa-\

Definition of Abt system

: a system of tracking for mountain railroads in which two or more cograils are used and so arranged that the teeth are not opposite on any two of the rails

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First Known Use of Abt system

1886, in the meaning defined above

History and Etymology for Abt system

after Roman Abt †1933 Swiss railroad engineer who devised it

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The first known use of Abt system was in 1886

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