The circular motion of the wheel was changed to back-and-forth motion of the saw blade by a connecting rod known as a pitman arm -LRB- thus introducing a term used in many mechanical applications -RRB- .

The circular motion of the wheel was changed to back-and-forth motion of the saw blade by a Connecting rod known as a pitman -LRB- thus introducing a term used in many mechanical applications -RRB- .
