Method and a machine for producing wood particles

Claim 1

A METHOD OF REDUCING AN ELONGATED WORKPIECE TO CHIPS HAVING A CROSS SECTION GENERALLY IN THE FORM OF A PARALLELGRAM WITH THE FIBERS SUBSTANTIALLY FREE FROM TRANSVERSE COMPRESSION, SAID METHOD COMPRISING THE STEPS OF FEEDING SAID PIECE LONGITUDINALLY, MAKING A SUCCESSION OF SHAVING CUTS GENERALLY TRANSVERSELY OF SAID PIECE AND SUBSTANTIALLY PARALLEL TO THE GRAIN OF SAID PIECE, SAID CUTS BEING SPACED FROM EACH OTHER IN A LONGITUDINAL DIRECTION OF SAID PIECE AND IN STEPWISE RELATIONSHIP TO EFFECT SAID CUTS AT PROGRESSIVELY INCREASING DEPTH, MAKING A SUCCESSION OF PARTING CUTS GENERALLY ACROSS THE GRAIN OF SAID PIECE, SAID PARTING CUTS BEING SPACED FROM EACH OTHER IN THE LONGITUDINAL DIRECTION OF SAID PIECE THE SAME DISTANCE AS THE SPACING OF SAID SHAVING CUTS AND IN THE SAME STEPWISE RELATIONSHIP AS SAID SHAVING CUTS TO EFFECT SAID PARTING CUTS AT PROGRESSIVELY INCREASING DEPTHS, EACH PARTING CUT MERGING WITH THE ADJACENT SHAVING CUT AT OTHER THAN A RIGHT ANGLE THERETO, SAID SHAVING AND PARTING CUTS BEING MADE SIMULTANEOUSLY WITH SAID SHAVING CUT SLIGHTLY PRECEDING SAID PARTING CUT, WHEREBY AS A RESULT OF SIMULTANEOUSLY FEEDING SAID PIECE AND MAKING SAID HAVING AND PARTING CUTS A PLURALITY OF HELICAL CHIPS WILL BE REMOVED FROM SAID PIECE, EACH CHIP HAVING A CROSS-SECTION IN THE FORM OF A PARALLELOGRAM DETERMINED BY THE ANGULAR RELATIONSHIP BETWEEN SAID SHAVING AND PARTING CUTS.

Claim 2

A METHOD OF REDUCING AN ELONGATED WORKPIECE TO CHIPS HAVING A CROSS SECTION GENERALLY IN THE FORM OF A PARALLELGRAM WITH THE FIBERS SUBSTANTIALLY FREE FROM TRANSVERSE COMPRESSION, SAID METHOD COMPRISING THE STEPS OF FEEDING SAID PIECE LONGITUDINALLY, MAKING A SUCCESSION OF SHAVING CUTS GENERALLY TRANSVERSELY OF SAID PIECE AND SUBSTANTIALLY PARALLEL TO THE GRAIN OF SAID PIECE, SAID CUTS BEING SPACED FROM EACH OTHER IN A LONGITUDINAL DIRECTION OF SAID PIECE AND IN STEPWISE RELATIONSHIP TO EFFECT SAID CUTS AT PROGRESSIVELY INCREASING DEPTH, MAKING A SUCCESSION OF PARTING CUTS GENERALLY ACROSS THE GRAIN OF SAID PIECE, SAID PARTING CUTS BEING SPACED FROM EACH OTHER IN THE LONGITUDINAL DIRECTION OF SAID PIECE THE SAME DISTANCE AS THE SPACING OF SAID SHAVING CUTS AND IN THE SAME STEPWISE RELATIONSHIP AS SAID SHAVING CUTS TO EFFECT SAID PARTING CUTS AT PROGRESSIVELY INCREASING DEPTHS, EACH PARTING CUT MERGING WITH THE ADJACENT SHAVING CUT AT OTHER THAN A RIGHT ANGLE THERETO, SAID SHAVING AND PARTING CUTS BEING MADE SIMULTANEOUSLY WITH SAID SHAVING CUT SLIGHTLY PRECEDING SAID PARTING CUT, WHEREBY AS A RESULT OF SIMULTANEOUSLY FEEDING SAID PIECE AND MAKING SAID HAVING AND PARTING CUTS A PLURALITY OF HELICAL CHIPS WILL BE REMOVED FROM SAID PIECE, EACH CHIP HAVING A CROSS-SECTION IN THE FORM OF A PARALLELOGRAM DETERMINED BY THE ANGULAR RELATIONSHIP BETWEEN SAID SHAVING AND PARTING CUTS.