At New York's World's Fair in 1854, Elisha Otis presented the world's first vertical mobility platform capable of stopping, rather than falling, in the event of its main cable breaking.

在 1854 年的纽约世界博览会上，以利沙·奥蒂斯展示了世界上第一个能够在主缆绳断裂时停止而不是坠落的垂直移动平台。