Buildings ยท 1890s-1900s
Escalator
A moving staircase that taught crowds to flow upward.
Why it matters
The escalator moves people continuously between floors, making vertical circulation feel like a walkway instead of a trip.
How it works
Linked steps move on tracks. Each step stays level on the visible incline, then folds back underneath for the return loop.
Design notes
- Escalators are crowd-flow machines as much as convenience machines.
- Comb plates at the ends reduce gaps where moving steps meet fixed floors.
- Malls, transit systems, and department stores all used escalators to shape movement.
Timeline
- 1890s: early moving-stair concepts
- 1900s: commercial installations
- Today: core transit and retail infrastructure