Machine for the cutting of rocks in underground works

Machine for cutting rocks in underground works, comprised of:

• a slide way,
• a carriage on said slide way,
• means to move the carriage on said slide way,
• a machine frame hinged relative to said carriage about a first axis at right angle to the lengthwise direction along which extends the slide way,
• means imparting to said machine frame a swinging movement about said first axis relative to the carriage,
• an arm hinged relative to the machine frame about a second axis in parallel relationship with said first axis,
• means imparting to said arm a swinging movement about the second axis relative to the machine frame,
• a cutting drum mounted relative to said arm, which rotates about a drum axis in parallel relationship with said first axis and second axis, and
• means to rotate said cutting drum about the drum axis,
• in which the sizes of the cutting drum, the arm, the machine frame and the carriage as well as the swinging motions imparted to the machine frame relative to the carriage and to the arm relative to the machine frame are so selected that the single cutting drum can be swung so far out at both ends of the slide way in the lengthwise direction thereof, that no single component extends further away in such a way that the cutting drum can cut free the machine at both ends of said slide way.