Step-multiplying ratchet wheel drive

Claim 1

IN A STEP-BY-STEP RATCHET WHEEL ADVANCING MECHANISM, THE COMBINATION WITH A THIN RATCHET WHEEL HAVING A GIVEN NUMBER OF TEETH AND SPRING MEANS FOR URGING THE WHEEL TO A NORMAL STARTING POSITION, OF A STEP-MULTIPLYING DRIVING PAWL AND HOLDING-DOG MEANS COMPRISING: A LEVER OSCILLABLE TO RECIPROCATE A DRIVING PAWL; A FIRST DRIVING PAWL PIVOTALLY MOUNTED ON SAID LEVER TO PIVOT IN A PLANE PARALLEL TO THE PLANE OF ROTATION OF THE WHEEL AND HAVING A LATERALLY-OFFSET DRIVING DOG OF AN ORDER OF THINNESS COMPARABLE TO THE THINNESS OF THE WHEEL AND ENGAGEABLE IN THE WHEEL TEETH; A SECOND DRIVING PAWL COPIVOTALLY MOUNTED IN SIDE-BY-SIDE RELATION WITH SAID FIRST PAWL AND HAVING A SIMILARLY LATERALLY OFFSET AND THIN DRIVING DOG DISPOSED CLOSE BEHIND THE FIRST DOG IN A RELATIONSHIP THERETO AND TO THE WHEEL TEETH IN A MANNER TO ENGAGE A WHEEL TOOTH AT A POINT ALONG THE TOOTH CONFIGURATION WHICH IS RELATIVELY DIFFERENT FROM THE POINT SIMULTANEOUSLY ENGAGED BY THE FIRST DOG AND CONTRIVED SUCH THAT FIRST ONE AND THEN THE OTHER OF SAID DOGS WILL ENGAGE WITH A TOOTH AT SAID POINT TO DRIVE THE SAME IN ALTERNATION RESPONSIVE TO OSCILLATION OF SAID DRIVING LEVER, SAID DOGS HAVING A LENGTH IN THE DIRECTION OF OFFSET SEVERAL TIMES THE THICKNESS OF THE WHEEL SO THAT CRITICAL ALIGNMENT OF THE PAWLS AND DOGS WITH THE PLANE OF WHEEL MOVEMENT IS OBVIATED TO PERMIT USE OF A RELATIVELY THIN AND LIGHT RATCHET WHEEL; TOGETHER WITH RELEASABLE HOLDING DOG MEANS COOPERABLE WITH SAID WHEEL AND ACTING TO HOLD THE GAIN IMPARTED THERETO BY EITHER DRIVING DOG.