Patten (shoe) wooden inner sections with leather above and below. In earlier varieties of pattens, dating from the 12th century on, the stilt or wedge variety were more common. From the late 14th century, the flat variety became increasingly common. Leather pattens became fashionable in the 14th and 15th centuries, and in London appear to have begun to be worn as shoes over hose in the 15th century, spreading to a much wider section of the public. Most London patten soles were constructed of alder, willow or poplar woods. In 1390, the Diocese of York forbade clergy from wearing pattens and clogs
Bucket-wheel excavator they are now capable of operating. Many BWEs have been designed to operate in climates with temperatures as low as . Developers are now moving their focus toward automation and the use of electrical power. A bucket wheel excavator (BWE) consists of a superstructure to which several more components are fixed. The bucket wheel from which the machines get their name is a large, round wheel with a configuration of scoops which is fixed to a boom and is capable of rotating. Material picked up by the cutting wheel is transferred back along the boom. In early cell-type bucket wheels,