Patten (shoe) the nineteenth or even early 20th century. In appearance, they may resemble contemporary clogs or sandals, but though historical usage was apparently not always consistent, the term now is used only to describe protective overshoes worn over another pair of shoes. Pattens were worn during the Middle Ages outdoors and in public places over (outside) the thin soled shoes of that era. Pattens were worn by both men and women during the Middle Ages, and are especially seen in art from the 15th century: a time when poulaines, shoes with very long pointed toes, were particularly in fashion. Medieval pattens
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,