Whipsaw

This evolved into a straight, stiff blade without a frame, up to 14 feet long and with a handle at each end.

[1] The whipsaw was used close to the felling site to reduce large logs to beams and planks.

The saw blade teeth were angled and sharpened as a rip saw so as to only cut on the downward stroke.

On the return stroke, the burden of lifting the weight of the saw was shared equally by the two sawyers, thereby reducing fatigue and backache.

The pitman had to contend with sawdust in his mouth and eyes and the risk of being crushed by a falling log, although modern photographs[2] show the saw dust falling, as would be expected, away from the pitman, the teeth being on the opposite edge from him.