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Tightlock coupling

Type H Tightlock couplers are a variety of Janney coupler, typically used on North American mainline passenger rail cars. They have mechanical features that reduce slack in normal operation and prevent telescoping in derailments, yet remain compatible with other Janney types used by North American freight railroads.

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AAR Type F

Tightlock use in the United Kingdom

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Tightlock coupling

Nodes40
Edges39
Triples0
Avg. degree1.95
Density0.05
Components1

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Important terminology

tightlock couplers coupler janney cars type american north passenger trains used rail railway use built railroads must pneumatic aar united

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