Center-pin



a cylindrical device passing through the center plates of both the body bolster and the truck bolster, permitting the truck to swivel beneath the car body while the stress is taken by the center plate.
Historical Examples

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  • Center-pivot irrigation

    a method of irrigation, used mainly in the western U.S., in which water is dispersed through a long, segmented arm that revolves about a deep well and covers a circular area from a quarter of a mile to a mile in diameter.

  • Center-plate

    one of a pair of plates that fit together and support the body of a car on a truck, while allowing the truck to rotate with respect to the body. One plate (body center plate) is attached to the underside of the car body and the other (truck center plate) is part of the car […]



  • Center-punch

    a punch for making shallow indentations in metal work, as to center drill bits. Historical Examples

  • Centerpunch

    to mark with a center punch.



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