Gear box with variably coupled oscillation and rotation for kneading machine

A reciprocating kneader comprising:

• a kneader comprising:
• a cylindrical casing;
• a screw extending into said cylindrical casing wherein said screw comprises flights;
• and
• pins extending into said cylindrical casing;
• a gear box comprising:
• a casing;
• a gear box primary shaft adapted for coupling to a motor;
• a primary rotational gear attached to said gear box primary shaft which rotates in concert with said gear box primary shaft;
• a secondary rotational gear engaged with said primary rotation gear which rotates in concert with said primary rotational gear;
• a gear box secondary shaft attached to said secondary rotational gear which rotates in concert with said secondary rotational gear;
• a primary oscillation gear attached to said gear box primary shaft which rotates in concert with said gear box primary shaft;
• a secondary oscillation gear engaged with said primary oscillation gear which rotates in concert with said primary oscillation gear wherein said secondary oscillation gear rotates on said gear box secondary shaft;
• an eccentric coupled to said secondary oscillation gear wherein said eccentric rotates in concert with said secondary oscillation gear wherein said eccentric comprises lobes;
• a yoke engaged with said eccentric wherein said yoke oscillates on an axis perpendicular to said gear box secondary shaft in response to contact with said lobes of said eccentric during rotation and said gearbox secondary shaft moves along its axis in concert with yoke oscillation;
• a housing pivotally attached to said yoke at a yoke pivot axis and pivotally attached to said casing at a casing pivot axis herein said yoke pivot axis and said casing pivot axis are not parallel;
• and
• wherein said gear box secondary shaft is coupled to said screw such that movement of said screw moves in concert with movement of said gear box secondary shaft;
• and
• a motor coupled to said gear box primary shaft.

A reciprocating kneader comprising:

• A gearbox within a casing;
• A gearbox primary shaft coupled to a motor;
• A primary rotational gear attached to said gearbox primary shaft which rotates in concert with said gearbox primary shaft;
• A secondary rotational gear engaged with said primary rotation gear which rotates in concert with said primary rotational gear;
• A gearbox secondary shaft attached to said secondary rotational gear which rotates in concert with said secondary rotational gear;
• A primary oscillation gear attached to said gearbox primary shaft which rotates in concert with said gearbox primary shaft;
• A secondary oscillation gear engaged with said primary oscillation gear which rotates in concert with said primary oscillation gear wherein said secondary oscillation gear rotates on said gearbox secondary shaft;
• said secondary oscillation gear being coupled to convert rotation into oscillation to move in concert with the rotational movement of said primary rotation gear whereby said reciprocating kneader is capable of rotating and oscillating from said single drive and wherein the oscillation strokes per revolution is adjustable but invariant at a given adjustment.