SWITCH FROG Meaning and
Definition
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A switch frog refers to a crucial component found in railway systems, specifically in train tracks, that helps facilitate the efficient movement and diversion of trains from one track to another. It is a specialized type of railroad frog which is used primarily in the construction of switches and rail turnouts. A switch frog serves as a geometric transition point, allowing a train to switch tracks smoothly and safely without any derailment risks.
A switch frog is typically constructed using two separate rails that are joined together at an acute angle, forming a V-shape. Commonly made of durable and strong materials like steel or iron, the switch frog boasts a sturdy construction able to endure the heavy loads and frequent use by trains. It plays a pivotal role in redirecting a train's wheels onto a diverging track by guiding the wheels through the required lateral movement.
One of the crucial features of a switch frog is its ability to maintain continuity in electrical connections. This ensures that electrical signals can still be transmitted across different tracks, allowing proper coordination and control of train movements. Additionally, the switch frog may be equipped with various mechanisms such as switch points, closure rails, and slide plates to ensure smooth transitions and to align the rails accurately.
In summary, a switch frog is an integral component in railway systems that facilitates the safe and efficient switching of trains from one track to another. Its geometric configuration and sturdy construction allow for a seamless diversion of train paths while assuring electrical continuity and minimizing derailment risks.
Etymology of SWITCH FROG
The etymology of the term switch frog can be traced back to the early history of railways. In the context of rail transport, a switch frog refers to the mechanism used at the intersection of two railway tracks, where a train can be redirected from one track to another. The term switch originally comes from the act of changing or switching the train's direction by moving the rails.
Regarding the word frog, it is thought to have derived from the Old English word frogga, meaning a hopping or leaping motion. This term was used to describe the shape and movement of the device used to guide the train wheels at the intersection of the tracks. Over time, frog became the commonly used term for this junction, and when combined with switch, it forms the compound term switch frog.
