Reciprocating piston mechanism with extended piston offset

A reciprocating piston mechanism with extended piston offset, comprising:

• a main crankshaft having a central axis, a crank, and a crankpin on the crank;
• a lever assembly having means for pivotally mounting the lever assembly on the crankpin of the crankshaft, the lever assembly having at least a first arm and a second arm;
• at least one cylinder, that has a longitudinal axis;
• a piston slidingly installed in said at least one cylinder, the piston having a pivot pin;
• a connecting rod having one end pivotally connected to said second arm of the lever assembly and another end, pivotally connected to said piston;
• at least one roller rotationally installed on said first arm of the lever assembly;
• and
• a guide for guiding the roller along a predetermined stationary pathway where said roller functions as a fulcrum of the lever assembly.