Controller

Claim 1

IN AN AIR-PRESSURE-OPERATED COMPUTER, A FIRST LEVER PIVOTALLY MOUNTED ON A FIRST PIVOT, MEANS APPLYING A FORCE TO SAID FIRST LEVER, MEANS ADJUSTING THE POINT AT WHICH SAID MEANS APPLIES A FORCE TO SAID FIRST LEVER AND LOCKING SAID POINT AT A FIXED DISTANCE FROM SAID PIVOT, SAID MEANS COMPRISING, A FLAT FLEXIBLE STRIP CONSTITUTING A PIVOT, A CANTILEVER MOUNTED ON SAID STRIP FOR PIVOTING MOVEMENT AND HAVING A CONCIAL DEPRESSION IN IT WHICH RECEIVES THE MOVABLE PORTION OF SAID MEANS APPLYING A FORCE TO SAID FIRST LEVER AND HAVING A PAIR OF EARS, A SCREW MOUNTED FOR ROTATION IN SAID EARS, AND AN L-SHAPED MEMBER HAVING ON IT A SECOND PAIR OF EARS HAVING SCREW-TIGHT ENGAGEMENT WITH SAID SCREW AND HAVING ON IT A HEMISPHERICAL KNOB ENGAGING SAID FIRST LEVER, A SECOND LEVER PIVOTALLY MOUNTED ON A SECOND PIVOT HAVING AN AXIS AT AN ANGLE TO THE AXIS OF SAID FIRST PIVOT, MEANS APPLYING A FORCE TO SAID SECOND LEVER IN THE OPPOSITE DIRECTION TO THE FORCE APPLIED TO SAID FIRST LEVER, FORCE-TRANSMITTING MEANS MOVABLE LINEARLY ALONG SAID FIRST LEVER AND SAID SECOND LEVER AT AN ANGLE TO SAID FIRST PIVOT AND PARALLEL TO SAID SECOND PIVOT FOR TRANSMITTING TO SAID FIRST LEVER FORCE APPLIED TO SAID SECOND LEVER AND TO SAID FORCE-TRANSMITTING MEANS, WHEREBY THE FORCE FROM SAID SECOND LEVER IS APPLIED TO SAID FORCE-TRANSMITTING MEANS AND TO SAID FIRST LEVER AT A MECHANICAL ADVANTAGE WHICH IS CONSTANT AND THE DISTANCE BETWEEN FIRST PIVOT AND SAID FORCE-TRANSMITTING MEANS IS VARIED.