SA3 coupler
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SA3 couplers or Willison coupler and Russian coupler are railway couplings used primarily in Russia and states influenced by the former Soviet Union, such as Finland, Poland, and Mongolia.
SA3 couplers
SA3 details
End view of SA3 coupler, with release lever to the left.
Unicoupler/Intermat/AK69e coupler on cargo train
Janney coupler
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Knuckle couplers are a semi-automatic form of railway coupling that allow rail cars and locomotives to be securely linked together without workers having to get between the vehicles.
SA3 coupler
…had several disadvantages: their draft load was limited, they were susceptible to buffer lock, and they were not semiautomatic like the North American Janney couplers. Conversion to Janney couplers (as Japan and Australia had) was considered, as was development of a new design. The Willison coupler was patented in…
Syracuse Malleable Iron Works – 1894. MCB5 Transition Coupler, compatible with link and pin coupling
MCB Type 5 coupler circa 1893. Split knuckle accommodates link and pin coupler or Johnston coupler. Vertical hole in knuckle accommodates the pin. Could also have accommodated a buffers and chain coupler with an extra pin.
AAR Type F Interlock couplers, rigid version at right and rotary version at left. The one on the left lost its pin and was pulled out of its coupler pocket.
Mated Janney Type E couplers, as seen from above. Left is top-operated on locomotives. Right is bottom-operated on cars