Sandstone block extractor in quarry (Machine-translation by Google Translate, not legally binding)

摘要

Stone quarry extractor machine in quarry, characterized by that to start the race or cut has lifting device of its front part, consisting of a threaded pin located inside a tube, in combination with a sliding nut that sends to another pipe coupled Telescopically at the end of which there are buffers capable of supporting, when lowering the nut, on the rails, raising the machine as necessary to start the work, this maneuver being commanded by the driver from a crank that drives an axis that ends in a conical group. (Machine-translation by Google Translate, not legally binding)