Combine Harvesters

Machines that combine reaping, threshing, and winnowing grain into one mechanized harvest operation, beginning with horse-drawn combination harvester-threshers.

Core metadata

ID: combine_harvesters
Era: Industrial
First known date: 1836 (exact)
Region: Michigan, United States; later California and global grain regions
Review status: source_checked
Maturity: established

Prerequisites

Dependents

None.

Fields

Agriculture & Food Systems

Field lanes

Agriculture & Food Systems: Mechanization

Node sources

Combine (Encyclopaedia Britannica, 2026, textbook) • Supports: node, maturity
Hiram Moore Collection (National Museum of American History, 2026, museum) • Supports: node, maturity

Prerequisite edge evidence

Edge/source evidence summary:

Prerequisite edges: 2
Average edge confidence: 74%
Prerequisite sources: 2
expert_inference: 1
textbook: 1

Prerequisite	Type	Confidence	Evidence level	Note	Sources
Threshing & Winnowing (threshing_and_winnowing)	required	86%	textbook	A combine is explicitly a machine combining cutting with threshing and cleaning grain, so threshing and winnowing are core process dependencies.	Combine (Encyclopaedia Britannica, 2026, textbook) • Supports: node, maturity, edge
Animal-Powered Threshing (animal_powered_threshing)	historical_predecessor	62%	expert_inference	Early combines were horse-drawn and built on prior animal-powered grain-processing practices.	Combine (Encyclopaedia Britannica, 2026, textbook) • Supports: node, maturity, edge

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