Patent ID: 6131498
Filing Date: 2000-10-17
Classification: B26D,B26F,Y10S,Y10T

Abstract:
A reciprocating knife cutter comprising:a frame;an elongated knife with a longitudinal axis along the knife's length, having an upper part, a lower part, said lower part having a sharpened cutting edge extending along at least a portion of the length thereof;an eccentric drive member supported on said frame for rotation about a horizontal eccentric drive axis fixed relative to said frame, the upper part of said knife being drivingly connected to said eccentric drive member for rotation therewith;means for rotating said eccentric drive member to rotate the upper part of said knife thereby causing said knife to reciprocate;a block slidably mounted to said frame for selectively positioning said lower part of said knife with respect to said frame thereby allowing said knife to cut on either an up or downstroke during reciprocation;a guide pivotally coupled to said block and engaged with said lower part of said knife for slidably supporting the lower part of said knife for oscillation in a plane perpendicular to the eccentric drive axis;and whereinsaid block and said guide coact such that during operation, as the upper part of the knife is rotated, the lower part of the knife both reciprocates and oscillates in said plane and the knife and the guide slide relative to each other.