Electric Elevators
Commercial electric passenger elevator systems using electric motors, shafts, controls, and building integration for taller urban buildings.
Core metadata
- ID: electric_elevators
- Era: Industrial
- First known date: 1889 (exact)
- Region: New York City, United States / Demarest Building electric passenger elevator
- Review status: source_checked
- Maturity: established
Prerequisites
- Electric Motor (electric_motor)
- Precision Machine Tools (precision_machine_tools)
- Steel Production (steel_production)
Dependents
Fields
Field lanes
- Civil Engineering & Built Environment: Buildings & Urban Systems
Node sources
- Elevator (Encyclopaedia Britannica, 2026, textbook) • Supports: node, maturity
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 3
- Average edge confidence: 77%
- Prerequisite sources: 4
- expert_inference: 2
- textbook: 1
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Electric Motor (electric_motor) | required | 90% | textbook | The source identifies the electric motor as the key change for electric elevator operation. |
|
| Precision Machine Tools (precision_machine_tools) | required | 72% | expert_inference | Commercial elevator machinery required accurate drums, guides, shafts, braking, and control components. |
|
| Steel Production (steel_production) | commercial_or_scaling_dependency | 68% | expert_inference | Steel rails, cables, frames, and shafts supported safe building-scale elevator deployment. |
|
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