The hacksaw from the 1920s is a machine tool which saws rods (either wood or metal) into short pieces. A transmission sets the saw in motion. The weight...

The planing machine from the 1920s is a machine tool used for planing work on long iron work pieces. The machine brings the work pieces into the desired...

In the 1920s the saw blade sharpening machine sharpened the circular saws in the Jacob Döring Tool Factory in Hagen (Germany, North Rihe-Westphalia)....