A Buffer and Chain Coupler is a mechanical device used in railway systems to connect two train cars. The buffer absorbs shocks during coupling and uncoupling, while the chain coupler links the cars securely. This system ensures smooth movement and stability, enhancing safety during train operations. The buffer typically consists of a spring mechanism that compresses upon impact, reducing the force transmitted between cars. The chain coupler, often made of strong metal, provides a reliable connection. Together, they play a crucial role in the functionality of trains, contributing to efficient transportation in the railway industry.