Among the the neck-breakers filed away in the patent office, writer George Worts singled out the Corkscrew of Fate as a particularly traumatizing device. Thrill seekers would ride a hollow steel ball down a spiral track and onto a cushion, "where the occupant emerges, a sadder and wiser, if not a broken, man."
Other infamous rides included the scenic railway, which was essentially a classic wooden roller coaster, as well as a loop the loop you could ride on roller skates. If that didn't make you dizzy enough, you could ride on the Wastebasket of Dizziness, where cars sped down a spiral track before landing safely on the ground. Nowadays, these rides feel tame compared to the the roller coasters outfitted with facedown drops and 360-degree rotating seats, but you'd be surprised by the number of legitimately scary concepts housed in the patent office. For example, one Belgian device would fling a car, untethered, from an upright steel pole so that it would hurtle through the air and magically land upright on an inclined platform.
Read the full story in A Dozen Ways of Breaking Your Neck