thrust-box

Updated: May 8, 2025

On the other side of the crank case another casting carried the thrust-box, and the whole crank case, with its cylinders and gear, was carried on the fixed crank shaft by means of four ball-bearings, one of which also took the axial thrust of the air-screw.

W. Lockwood (William Lockwood) Marsh - A History of Aeronautics