Piggly-wiggly[?] - Claims to be the first supermarket. Motto: "Piggly-Wiggly All Over the World". One rival entrepreneur opened a store: "Hoggly-Woggly Only One in the World".
... "rolling" point, but the gyro will also be accelerated to a smaller extent by the slipping friction.
The device is covered by US patents 3,726,146 (1973) and ...