This tool at Smith’s Tavern is a scythe.  

 

The scythe in one form or another is an ancient mowing tool, with straight-handled versions appearing about the 9th century.  The now-familiar curved handle, or snath, with short, projecting hand grips, or nibs, was developed around the 12th century. In spite of the fact that a man with a scythe could cut more grain than a man with a sickle, the sickle remained the chosen tool for harvesting grain for many centuries.