Brace and Bits
A brace or brace and bit is a hand tool used to drill holes, usually in wood. Pressure is applied to the top and the tool is rotated with a U-shaped grip. The U-shaped part is a kind of crankshaft. It gives the brace much greater torque than other kinds of hand drill; a brace can be used to drill much wider, and deeper, holes than can a gear-driven hand drill.
GalleriesDrills and Drill Bits
Charles Barnard Tools and Machines (New York, NY: Silver, Burdett and Company, 1903)