Lantern clocks were the first type produced by the Japanese to imitate European clocks. Other styles of clocks were developed, but the lantern remained the standard for large clocks until 1873. The Japanese usually substituted two ropes and weights, one for each train, for the single rope and weight for both trains commonly found on contemporary European lantern clocks. Notched, weighted foliots or balance wheels with verge escapements were the common method of governing the rate. Seasonal adjustments for varying hour lengths were made by moving the weights on the notched foliots (single or double), or, on balance-wheel clocks, by moving the adjustable hour indicators. Single and double window calendars appear in the 18th century, and late clocks have turned corner pillars. The construction of Japanese houses usually prevented lantern clocks from being hung on the walls, so they were frequently placed in a wood and glass hood on top of a pyramidal or table stand which enclosed the weights. Some lantern clocks, usually small ones, were put into wall bracket cases suspended from a support column.