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The staircase lacks the newel or central pole usually used to support and stabilize a spiral staircase, and therefore the means of supporting the weight is not obvious. However, the staircase is supported by its stringers just like a conventional (straight) staircase, although in this case each stringer is twisted into a helix. [11]
This was the first of at least four escalator-style patents issued to Souder, including two for spiral designs. [3] On March 15, 1892, Jesse W. Reno patented the "Endless Conveyor or Elevator." [4] A few months after Reno's patent was approved, George A. Wheeler patented his ideas for a more recognizable moving staircase, though it was never ...
RKO used him as Hedy Lamarr's leading man in Experiment Perilous (1944). For Hal Wallis he did The Affairs of Susan (1945) with Joan Fontaine then Tomorrow Is Forever (1946) at International with Claudette Colbert and Orson Welles. He returned to RKO for The Spiral Staircase (1946), a huge success.
It has approximately 2,700 sq ft (250 m 2) of living space including three bedrooms, one accessed via a spiral staircase inspired by an ice cream cone that at the top is the same diameter as the room, and two bathrooms, and has a two-car garage. [6]
The helical stair is also called the spiral stair, winding stair, circular stair, elliptical stair, oval stair, geometric stair, vis, vice, vis de Saint Gilles, St. Gilles screw, belfry stair, turret stair, caracole, turnpike, cochlea, cockle, corkscrew, and ascensorium. Helical is possibly the least poetic but also the most accurate generic title.
The spiral stair is a type of stairway which, due to its complex helical structure, has been introduced relatively late into architecture. Although the oldest example dates back to the 5th century BC, [ 1 ] it was only in the wake of the influential design of the Trajan's Column that this space-saving new type permanently caught hold in ancient ...
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