Rotary printing machine having a first gearwheel and a second gearwheel with a secured rotary angle position when uncoupled from the first gearwheel

A rotary printing machine, comprising:

• a first gearwheel;
• a second gearwheel;
• a setting device for selectively adjusting said second gearwheel into a first position in which said second gearwheel is coupled with said first gearwheel and into a second position in which said second gearwheel is uncoupled from said first gearwheel;
• and
• a traction mechanism for securing a staggered-teeth rotary-angle position of said second gearwheel relative to said first gearwheel when said second gearwheel is adjusted into the second position;
• said traction mechanism including a rotatably configured traction device;
• said traction mechanism including a first tension element for tensioning said traction device;
• said traction mechanism including a spring that loads said first tension element;
• said traction mechanism including a second tension element assigned to said traction device;
• and
• said second tension element being mounted to be selectively adjustable into a first switching position and a second switching position.