Saw one of these at a rennaissance festival last summer and just had to add it to the park. The ladder was attached to hinged, swiveling pieces (the kind used for carriages) at each end to allow full rotation.

prkjl01.jpg Overhead view of Jacob's Ladder
prkjl02.jpg Side view of Jacob's Ladder

prkjl03.jpg Closeup, the HoG (hand of god) reaching down to be mean
prkjl04.jpg Closeup, hope he has good insurance