cutter bar

Also called sickle bar. (in a mower, binder, or combine) a bar with triangular guards along which a knife or blade runs.

a bar holding the cutting tool in a boring machine or lathe.

Origin of cutter bar

First recorded in 1865–70

This machine does not cut the wheat close to the ground, but the cutter-bar, over twenty-five feet in length, takes off the heads.

The Age of Invention |Holland Thompson
When the cutter-bar of the mower is tilted upward, the danger of smothering is reduced.

Crops and Methods for Soil Improvement |Alva Agee
The basic idea in the reaper, the cutter-bar, is the whole of the mower, and the machine developed with the reaper.

The Age of Invention |Holland Thompson
It had open guard fingers, a knife made of triangular sections, reciprocating in the guard, and a cutter-bar on a hinged frame.

Inventions in the Century |William Henry Doolittle

A second clipping will be required later, with cutter-bar tilted well upward.

Crops and Methods for Soil Improvement |Alva Agee