A blake jaw crusher is an original jaw type crusher. This crusher has one fixed jaw plate, whereas the other one is pivoted at the top to offer the greatest movement on the smallest lumps. Here the motion is imparted on the lower end of the crushing jaw using a toggle joint operated by eccentric. This machine, along with some of its modifications, is used for reducing the run of the mine ore. It is also used to reduce the coal to a size smaller enough to take out. This crusher works typically in the first stage of crushing.