Twinned circular, parallel arrays of spoke-like second-class levers () enclosing a centered cargo cradle for towing 2 ton stone blocks () up a stepped structure of stone courses () by rotation of the whole.
A light, strong, flattened in appearance elliptical frame bicycle seat. Lips encircle and enclose the seat at both sides to hold encircling pads in place, to help prevent sidewards displacement of the rider, and to give added strength to the whole. The seat depends on current, common seat post mounting for adjustments and to hold it in place. Obvious reinforcement needed is represented by large diameter washers where the seat post mounting bolt enters the lower side of the frame