Today reapers and grain binders have been largely replaced by combines in commercial farming, but some smaller farms still use them.
2.
Mechanical reapers substantially changed agriculture from their appearance in the 1830s until the 1860s through 1880s, when they evolved into related machines, often called by different names ( self-raking reaper, harvester, reaper-binder, grain binder, binder ), that collected and bound the sheaves of grain with wire or twine.
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