Couplers need to be the strongest link in a train, capable of withstanding extreme forces of buff (compression) and draft (expansion). Since the semi-automatic “Janney” knuckle coupler was patented in ...
RAILWAY AGE, MARCH 2023 ISSUE: Critical components like couplers, draft gears and end-of-car cushioning units must be capable of managing thousands of tons of force. In-train forces—buff and draft—can ...
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