1. A MECHANICAL INTEGRATOR, COMPRISING IN COMBINATION; FIRST INPUT MEANS; SHAFT MEANS ROTATABLE BY SAID FIRST INPUT MEANS; INTERNAL GEAR MEANS AXIALLY ALIGNED WITH SAID SHAFT MEANS TOWARDS ONE END THEREOF, SAID GEAR MEANS BEING LOGITUDINALLY DISPLACEABLE FROM SAID SHAFT MEANS; SPIRAL MATING MEMBERS ON EACH OF SAID SHAFT AND GEAR MEANS, THE MEMBER ON THE ONE OF SAID SHAFT AND GEAR MEANS BEING ADAPTED TO SPIRALLY ENGAGE THE CORRESPONDING MEMBER ON THE OTHER OF SAID SHAFT AND GEAR MEANS SO AS TO RADIALLY DISPLACE SAID GEAR MEANS FROM SAID SHAFT MEANS; SECOND INPUT MEANS APPLICABLE TO SAID GEAR MEANS DISPLACING SAID GEAR MEANS LONGITUDINALLY FROM SAID SHAFT MEANS IN RESPONSE TO A SECOND INPUT; AN OUTPUT ELEMENT TENDING TO BE LOCATED TOWARDS THE AXIS OF SAID SHAFT AND GEAR MEANS BUT OUTWARDLY DISPLACEABLE FROM SAID POSITION; AND, LINKING MEANS LINKING SAID OUTPUT ELEMENT TO SAID SHAFT AND GEAR MEANS, RADIALLY DISPLACING SAID OUTPUT ELEMENT FROM THE AXIS OF SAID SHAFT AND GEAR MEANS IN RESPONSE TO THE RADIAL DISPLACEMENT OF THE ONE MEANS FROM THE OTHER.