Because of the First World War, Wegener's book went unnoticed outside Germany. In 1922, however, a third (revised) edition was translated into English, French, Russian, Spanish, and Swedish, pushing Wegener's theory of continental drift to the forefront of debate in the Earth sciences.
A drilling machine, called a drill press, is used to cut holes into or through metal, wood, or other materials (Figure 4-1). Drilling machines use a drilling tool that has cutting edges at its point.
The BLACK BULL 6 Ton A-Frame Shop Press features all welded steel construction with a powder coated paint finish. The 6 ton hydraulic jack has an operating distance of 2 in. to 4.3 in. 1  Used to install and remove bearings, gears, U-joints, bushings, ball joints, pulleys and other items.  Spring-return ram speeds up work.