Three Rohrs
The Three Rohrs ride safety bicycles on the inside of a circular shaped “cup,” which is raised and lowered by a mechanical appliance.
The “sensation” is in the “cup” becoming a “loop-the-loop” through the apparatus which raises and inverts it at the same time, the rider within “looping-the-loop” on the wheel while it is in this position, continuing riding until the “cup” regains its
former balance.