Historical information

Auger bits fit into the jaws of a hand brace (brace and bit), which is used to bore holes into wood. The tapered end, or tapered shank, fits into the brace, while the twisted shank and twisted point draw the bit into the wood. The twisted shank guides the bit into the wood, helping to remove chips produced by the cutters and enabling the user to bore deep straight holes. The collection pictured here includes two common patterns of twist bits: the ‘Jennings’ double twist pattern; and the ‘Irwin’ single twist pattern. Their finely pitched threaded points are typically used to cut hardwood timber.

Physical description

Set of thirteen auger bits, with tapered proximal ends and corkscrew spiraled distal ends. Some with tight and loose spiral patterns. Paint spots and surface rust.

Inscriptions & markings

[size of each bit stamped on]