Image Number 3 for United States Patent #7504064.
A potter's wheel for forming an oval pottery, such as dish, bowl or the like, has a die (26) for positioning clay to be formed and a revolution-rotation device (24). The revolution-rotation device (24) provides the revolution of the die about a first axis and the rotation of the die about a second axis. A tool is held at a predetermined position with respect to the first axis. While the direction of the rotation is same as that of the revolution, the speed of the rotation is a half of that of the revolution.