Escalators, from what I've seen, were created in 1891 using iron. However, with the way they collapse into themselves, is it even possible to make an escalator using technology from the 16th century, without iron? For example, an escalator made out of wood? If so, how can it be done?
To add some further detail, I'm attempting to create an environment similar to the Renaissance era with some modern technology intact, just invented in an alternate fashion. The idea of a working escalator came to mind, which was invented just 200 years later using iron, and a type of conveyor belt using belts and tracks. From what I'm seeing, I don't see that type of technology existing in the 16th century, unless there's an alternate way to recreate it?
EDIT: I didn't think this question would get this active, wow! To answer a common question, yes, other metals and alloys that are not iron are allowed. I do know that iron has existed as long as most other metals. My wording was a little off originally. I meant to state that the first patented "endless conveyor / elevator" was done by Jesse W. Reno in 1892, so my question is more focused on how it can be done alternatively from this patented, well-known way, but in the 16th century. The water wheel way is sounding really interesting so far.