Buffer

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

In collections

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What Wikipedia says

A buffer is a part of the buffers and chain coupler system used on the railway systems of many countries, among them most of those in Europe, for attaching railway vehicles together (in North America, rolling stock instead has draft gear built into the couplers).

Excerpt from the Wikipedia article “Buffer (rail transport)”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Priwo, Public domain, via Wikimedia Commons.