Gooseneck

[kaptain Jack]

Hey guys, working on a gooseneck lifting mechanism, built one some ten, fifteen years ago and totally forgot how I did it . Can anyone direct me to a built link, the ones I found, showing action only and not actual mechanics of how it lifts the trailer.
Thx

[ddmckee54]

This one's LEGO, but it might be good for some ideas.
https://www.youtube.com/watch?v=g6sPmT0Dm7U

[kaptain Jack]

Thank you, very much.