Index mechanism

Claim 1

AN INDEX MEANS FOR A SHAFT, COMPRISING AT LEAST ONE SUPPORT PLATE, A SHAFT HAVING A ROUND PORTION FOR SUPPORT IN A JOURNAL, SAID PLATE HAVING A JOURNAL PORTION THROUGH WHICH SAID ROUND SHAFT PORTION PASSES, SAID JOURNAL PORTION HAVING A GENERALLY NOTCHED PORTION SO DIMENSIONED AND SHAPED THAT SAID SHAFT PORTION HAS SOME LATERAL PLAY AND WHEN MOVED TOWARD SAID NOTCHED PORTION SAID SHAFT IS SUPPORTED THEREBY, AN INDEX PLATE MOVABLE WITH SAID SHAFT ADJACENT SAID SUPPORT PLATE, SAID INDEX PLATE HAVING A WAVY INDEX PORTION INCLINED OUT OF A PLANE NORMAL TO THE SHAFT, SAID SUPPORT PLATE HAVING AN APERTURE GENERALLY REGISTERING WITH SAID WAVY INDEX PORTION, SAID APERTURE HAVING A NOTCHED PORTION GENERALLY SIMILIAR TO THE JOURNAL NOTCHED PORTION, EACH NOTCHED PORTION BEING GENERALLY SYMMETRICAL ABOUT A STRAIGHT LINE BETWEEN THE CENTERS OF SAID JOURNAL REGION AND APERTURE REGION, SPRING MEANS INCLUDING A BALL SHAPED PORTION FOR COOPERATING WITH SAID WAVY INDEX PORTION, SAID BALL SHAPED PORION OPERATING IN SAID PLATE APERTURE, SAID SPING MEANS PROVIDING A FORCE URGING SAID BALL SHAPED PORTION THROUGH THE APERTURE AND TOWARD SAID WAVY INDEX PORTION, SAID TWO NOTCHED PORTIONS BEING SUCH THAT THE FORCE OF SAID SPRING BIAS ON SAID BALL SHAPED PORTION CREATES FORCE COMPONENTS TENDING TO URGE SAID BALL SHAPED PORTION AND JOURNALED SHAFT PORTION INTO THEIR RESPECTIVE NOTCHED PORTIONS.