Dynamically variable oscillating adjustment assembly

In an apparatus including an oscillation drive means, the improvement having a dynamically variable oscillating adjustment assembly comprising:

• a frame;
• a first link means;
• first means connected to said frame for pivotally connecting one end of said first link means to said frame, including
• means for translating said first link means with respect to said frame such that the pivot point of said first link means may be selectively adjusted with respect to said frame;
• a second link means pivotally connected at one end to the other end of said first link means;
• a bell crank having a first arm and a second arm and an intermediate pivot;
• second means connected to said frame for pivotally connecting said bell crank intermediate pivot to said frame;
• and
• means for pivotally connecting said first arm of said bell crank to the other end of said second link means,
• means for directly coupling said other end of said first link means and said one end of said second link means, with respect to any other portion of said first and second link means, to said oscillation drive means;
• said oscillation drive means being operative via said coupling means to impart affirmative oscillation to said other end of said first link means and said one end of said second link means, both of which are thus positively driven by said oscillation drive means, for operatively oscillating said second arm of said bell crank, wherein adjustment of the position of said first link means with respect to said frame will operably vary the stroke of the oscillation of said second arm of said bell crank.

A dynamically variable oscillating adjustment assembly comprising:

• a frame;
• a first link means;
• first means connected to said frame for pivotally connecting one end of said first link means to said frame, including
• means for translating said first link means with respect to said frame such that the pivot point of said first link means may be selectively adjusted with respect to said frame;
• a second link means pivotally connected at one end of the other end of said first link means;
• a bell crank having a first arm and a second arm and an intermediate pivot;
• second means connected to said frame for pivotally connecting said bell crank intermediate pivot to said frame;
• and
• means for pivotally connecting said first arm of said bell crank to the other end of said second link means, wherein oscillation of said other end of said first link means will operably oscillate said second arm of said bell crank and adjustment of the position of said first link means with respect to said frame will operably vary the stroke of the oscillation of said second arm of said bell crank;
• means for adjusting the position of said bell crank intermediate pivot with respect to said frame and said one end of said first link means wherein the position of oscillation of said second arm of said bell crank may be selectively varied.