Definition
A threshing machine is a piece of agricultural equipment used to separate grain from its stalks and husks after harvest. In legal contexts, the term has appeared principally in questions of property classification, chattel mortgage scope, lien priority, and exemption statutes — where courts have had to determine precisely what components constitute the "threshing machine" as a unit. The key legal contribution of the term is its expansive interpretation: a threshing machine includes not only the separator unit itself but also the horse power mechanism used to drive it. The machine is treated as an integrated assembly rather than a collection of discrete parts.
Common Language
Modern common usage (Wiktionary): A farm machine for threshing grain.
Historical common usage (Webster's 1913): A machine for separating grain from the straw; a thrasher.
The common definition describes function. The legal definition does something different — it draws a boundary around what physical components belong to the machine as a legal unit. Whether the power source is legally part of the machine matters enormously when a lien, mortgage, exemption, or ownership dispute turns on exactly what property is covered.
Why It Matters in Research
Researchers encountering "threshing machine" in historical legal sources — particularly in 19th-century state court decisions, chattel mortgage cases, and agricultural exemption statutes — should be alert to three practical issues.
First, component scope. The Nebraska Supreme Court's ruling that the term includes the horse power (the mechanical power transmission unit driven by horses, not the horses themselves) reflects a recurring interpretive problem in agricultural equipment law: instruments drafted around named machines rarely specified attached power units. Courts had to decide whether a mortgage on a "threshing machine" swept in the horse power, the separator, the straw carrier, and other attachments. The answer varied by jurisdiction and by the specific instrument language.
Second, exemption statutes. Many 19th-century states enacted statutory exemptions protecting farmers' tools and implements from execution or forced sale. Whether a threshing machine qualified as an exempt "farm implement" or a non-exempt piece of commercial equipment was litigated with some frequency. The answer often turned on whether the farmer used it for his own crops only, or hired it out commercially — a distinction that also affected insurance coverage disputes.
Third, fixture vs. chattel. When a threshing machine was housed in a barn or connected to a fixed steam or water power source, questions arose about whether it had become a fixture attached to real property. This matters in deed conveyances, mortgage foreclosures, and landlord-tenant disputes.
Corpus researchers should search not only "threshing machine" but also "thrasher," "separator," "horse power" (in the mechanical sense), and "farm implement" to capture the full range of relevant historical material.
Historical Dictionary Support
Bouvier's entry is brief to the point of being a gloss rather than a definition: it supplies a single jurisdictional ruling (Nebraska, 15 Neb. 428) establishing that the horse power is included in the term. This is characteristic of Bouvier's treatment of agricultural and mechanical terms — the dictionary flags the legally operative interpretive point without elaborating on the broader doctrinal context.
What Bouvier does not address: the fixture question, the exemption statute cases, the insurance coverage disputes, or the commercial-vs.-personal-use distinction. Researchers should treat the Bouvier entry as a starting point that identifies one key interpretive rule, not as a comprehensive account of the term's legal significance.
No meaningful divergence exists between legal dictionary sources because only Bouvier covers the term in the Law Mind corpus. The Nebraska ruling Bouvier cites is consistent with the general interpretive tendency of 19th-century courts to treat integrated agricultural machines as units for lien and mortgage purposes.
Jurisdictional Note
The component-inclusion rule reflected in the Nebraska case was not universal. Some jurisdictions applied stricter interpretation to chattel mortgage descriptions, requiring that attachments and power units be separately listed to be covered. Researchers working outside Nebraska should not assume the Nebraska rule applies without checking the relevant state's chattel mortgage and exemption case law.