A rotary car dumper or wagon tippler (UK) is a mechanism used for unloading certain railroad cars such as hopper cars, gondolas or lorries (tipplers, UK). It holds the rail car to a section of track and rotates the track and car together to dump out the contents. Used with gondola cars, it is making open hopper cars obsolete. Because hopper cars require sloped chutes in order to direct the contents to the bottom dump doors (hatches) for unloading, gondola cars allow cars to be shorter, thus lowering their center of gravity, while carrying the same gross rail load.
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“Fifty years from now, it will not matter what kind of car you drove, what kind of house you lived in, how much you had in your bank account, or what your clothes looked like, But the world may be a little better because you were important in the life of a child.”
—Anonymous. Quoted in The Winning Family, by Louise Hart, ch. 1 (1987)