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  2. Elevator - Wikipedia

    en.wikipedia.org/wiki/Elevator

    In 1912, commercial engineer Edmund F. Tweedy and electrical engineer Arthur Williams co-authored a book titled Commercial Engineering for Central Stations. [36] He followed Bolton's lead and developed a "Chart for determining the number and size of elevators required for office buildings of a given total occupied floor area".

  3. Dumbwaiter - Wikipedia

    en.wikipedia.org/wiki/Dumbwaiter

    A simple dumbwaiter is a movable frame in a shaft, dropped by a rope on a pulley, guided by rails; most dumbwaiters have a shaft, cart, and capacity smaller than those of passenger elevators, usually 45 to 450 kg (100 to 992 lbs.) [2] Before electric motors were added in the 1920s, dumbwaiters were controlled manually by ropes on pulleys. [1]

  4. File:Space elevator structural diagram--corrected for scale ...

    en.wikipedia.org/wiki/File:Space_elevator...

    This is an improved diagram of a Space Elevator. It is a modification of en:File:Space_elevator_structural_diagram--corrected_for_scale+CM+etc--regenerated_as_SVG.svg: Author: Skyway and User:Booyabazooka: Permission (Reusing this file) Same permissions as the file it's based on: File:Space_elevator_structural_diagram--corrected_for_scale+CM ...

  5. List of elevator test towers - Wikipedia

    en.wikipedia.org/wiki/List_of_elevator_test_towers

    Height Year completed Remarks KONE High-Rise Test Tower (Underground) [1] Kone: Tytyri, Finland: 1,148 ft (350 m) 1997 One of Kone's major achievements in elevator technology was tested at this facility. 1 H1 Tower [2] Hitachi: Guangzhou, China: 897 ft (273 m) 2020 Became the tallest elevator test tower when completed in January 2020 2 Jauhar ...

  6. Mechanical floor - Wikipedia

    en.wikipedia.org/wiki/Mechanical_floor

    Mechanical floors are generally counted in the building's floor numbering (this is required by some building codes) but are accessed only by service elevators. Some zoning regulations exclude mechanical floors from a building's maximum area calculation, permitting a significant increase in building sizes; this is the case in New York City. [1]

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  8. 50 Inventions From The Past That Were Amazingly Innovative - AOL

    www.aol.com/98-historical-inventions-were-ahead...

    When you think of a vending machine, things like snacks, sodas, or even pharmaceutical supplies may come to mind. But you might be surprised to know that the first ever vending machine actually ...

  9. List of inclined elevators - Wikipedia

    en.wikipedia.org/wiki/List_of_inclined_elevators

    This is a list of inclined elevators, organised by place within country and region. An inclined elevator is distinguished from the similar funicular railway in that its cars operate independently whereas funiculars are composed of two vehicles that synchronously counterbalance one another.

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