Striker assembly for rotary hog

A striker plate assembly for an impact rotor comprising;

• a striker plate having a rear face for attachment to a rotor and a front working face,
• said working face including a longitudinal recess with a mounting face inclined forwardly in the direction of rotation,
• at least one striker bit configured to be received in said recess and including front and rear surfaces in the direction of rotation, said front surface extending forwardly beyond the working face of said striker plate,
• at least one mating protrusion and recess on the rear surface of said bit and said striker plate recess for positively positioning said bit in said recess,
• at least one threaded connector, said connector extending through the bit and striker plate and having a multifaceted head received in said bit with a screwthreaded keeper on the opposite end thereof for clamping said bit to the striker mounting face,
• a recess on the rear face of said striker for receiving said screwthreaded keeper,
• said recess opening into the top surface of the striker plate to facilitate access to said keeper and removal of debris,
• said bit being generally rectangular in longitudinal cross section and symmetrical about a central longitudinal plane at right angles to its rear surface,
• said bit having opposed longitudinally extending cutting faces on its front surface inclined outwardly at an angle of 0.degree.-10.degree. with the rear surface of the bit in the direction of rotation and terminating in first and second cutting edges, said cutting faces and said cutting edges extending the full length of said bit,
• whereby said bit may be removed, rotated 180.degree. and then replaced to alternately utilize said first and second cutting edges.

In a rotary material breaker having a rotor with at least one radially extending lobe, said lobe including a forwardly disposed mounting face in the direction of rotation, an impact striker assembly comprising;

• a striker plate, said striker plate having a rear face adapted to engage said lobe mounting face,
• at least one threaded connector extending through the striker plate and said lobe and having a multifaceted head recessed in said striker plate with a screwthreaded keeper on the opposite end thereof for clamping said striker plate to said lobe,
• said striker plate having an upper portion thereof extending radially beyond said lobe and including a longitudinal recess therein, said recess having a forwardly disposed striker mounting face inclined in the direction of rotation,
• at least one striker bit configured to be received in said recess,
• at least one mating protrusion and recess on the rear face of said bit and striker mounting face for positively positioning said bit in said striker plate recess,
• said bit having top and bottom surfaces and a rear face adapted to contact the striker mounting face of said recess and at least one threaded connector for clamping said bit to the striker mounting face, said threaded connector extending through the bit and said striker plate having a multifaceted head recessed in said bit with a screwthreaded keeper on the opposite end thereof,
• a recess on the rear face of said striker plate for receiving said screwthreaded keeper,
• said recess opening into the top surface of the striker plate to facilitate access to said keeper and removal of debris,
• said bit being generally rectangular in longitudinal cross section and symmetrical about a plane passing through it s central longitudinal axis and at right angles to its rear face,
• said bit having a forward face extending forwardly beyond the striker plate with a central longitudinal surface and opposed longitudinally extending cutting faces inclined outwardly therefrom in the direction of rotation forming a rake angle of 0.degree.-25.degree. and terminating in first and second cutting edges associated with the tip and bottom surfaces of the bit, said cutting faces and associated cutting edges extending the full length of said bit,
• whereby said bit may be removed, rotated 180.degree. and then replaced to alternately utilize said first and second cutting edges.

A striker plate assembly for an impact rotor comprising;

• a striker plate having a rear face for attachment to a rotor and a front working face, said working face including a longitudinal recess,
• at least one striker bit configured to be received in said recess and including front and rear surfaces in the direction of rotation,
• connector means extending through said bit and said striker plate for clamping said bit in said recess,
• at least one mating protrusion and recess on the rear surface of said bit and said striker plate recess for positively positioning said bit in said recess,
• said bit having a transversely extending cutting edge,
• said striker plate being wedge shaped with the general plane of its rear face located at a shear angle in the transverse direction relative to the general plane of its working face,
• whereby the cutting edge of said bit, when carried on an impact rotor, may be disposed at a cutting angle relative to the rotor axis.