Device for driving two mold halves of a glass forming machine

A device for driving a first and second holder mounted displaceably on a glass molding machine in a reciprocating manner, said device comprising:

• each of said first and second holders having at least one mold tool half, said mold tool half of said first holder and said mold tool half of said second holder cooperating together to form a mold tool for production of a hollow glass object, said first holder having a first articulation point;
• a first joint bar articulated to said first holder at said first articulation point, said first joint bar having a second articulation point;
• a second joint bar articulated to said first joint bar at said second articulation point which is disposed at a distance from said first articulation point, said second joint bar being articulated to the glass molding machine at a third articulation point which is disposed at a distance from said first articulation point and said second articulation point;
• a rod articulated at said second articulation point;
• a first crank for moving said first holder, a second crank for moving said second holder, said rod being articulated to said first crank at a crank pin which is at a distance from said second articulation point and which is movable in a reciprocating manner;
• and
• first and second toothed wheels, said first crank connected coaxially to said first toothed wheel and said second crank connected coaxially to said second toothed wheel, said toothed wheels being rotationally driven by a drive in opposite directions from one another to drive said first and second cranks.