How Train Locomotive Detach and Attach to Train Coaches/Rake

Janney\AAR\APT\ARA\MCB couplers are Semi-Automatic mechanical mating of two coaches or coach & Rake. This coupler is Inspired by the human hand. This is more practical proven coupler, that requires little or no maintenance, reliable & consistent in abusive services & extreme environments.
Janney couplers operate much like Willison couplers, but with jointed\hinged nucks instead of interlocking heads. At least one nuck must be open to allow mating; as 2 cars come together, the nucks are pushed closed by the palm of the opposing coupler until latch pins hold the nucks locked. To decouple, cars are pushed together for slack, one pin is raised with a side lever allowing that nuck to open & the cars are free to part.
This video is prepared and presented by guideuncle.

[@spv1093]

That coupler have nothing to do with a Willison Coupler.

[@Bagerine]

I'm not gonna be surprised if someone gonna hijack a locomotive after watching this...