Uncoupling lever

Roland Levin

Hi all,
I do understand how an uncoupling lever works when it lifts the pin from above to release the coupler.

I don't understand how it works when the lever is under the coupler. It then has to push the pin up but wouldn't the part that is pushing the pin up lock the coupler?

I tried to search with Google but I couldn't find any explanations. Can anyone help me to understand this. Is there any good illustrations on-line showing the principal inside the coupler when you have the lever under the coupler.

Roland Levin
Stockholm, Sweden

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