Escalator 29
Escalator 29 :
History: (3) Inventors and Manufacturers: (2) Model Development and Design Types: (2. 2) "Step-Type" Escalators:Seeberger's model, bought by Otis, clearly became the first "step-type" escalator, so called after its visual likeness to steps on a regular staircase. The company later combined the best aspects of both inventions (guiding slats and flat steps) and in 1921 produced an escalator similar to the type used today: they called it the "L-type" escalator. It was succeeded by the "M-type", the "O-type", and current models by Otis such as the "NCE-type" escalator
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