Hammer for shredding machines

A hammer for a shredding machine comprising a mounting hole for mounting the hammer in the shredding machine, a center of gravity, a center of gravity axis extending through a center of the mounting hole and the center of gravity, a leading impact face, and a wear edge facing outward in an unloaded operating condition, the wear edge being longer rearward of the center of gravity axis than toward the leading impact face forward of the center of gravity axis.

A hammer for a shredding machine comprising a mounting hole for mounting the hammer in the shredding machine, a center of gravity, a center of gravity axis extending through a center of the mounting hole and the center of gravity, a leading impact face, and a wear edge having a leading end and a trailing end and facing outward in an unloaded operating condition, a leading axis extending from the center of the mounting hole to the leading end of the wear edge, and a trailing axis extending from the center of the mounting hole to the trailing end of the wear edge, wherein a trailing angle between the trailing axis and the center of gravity axis is greater than a leading angle between the leading axis and the center of gravity axis.

A hammer for a shredding machine comprising a mounting hole for mounting the hammer in the shredding machine, a wear edge having a leading end and a trailing end and a midpoint, the wear edge facing outward in an unloaded operating condition, a longitudinal axis extending through a center of the mounting hole and the midpoint of the wear edge, a leading section on one side of the longitudinal axis including a leading surface that faces in the direction of hammer rotation in an unloaded condition, and a trailing section on the other side of the longitudinal axis that has more mass than the leading section.

A hammer for a shredding machine comprising a mounting hole for mounting the hammer in the shredding machine, a center of gravity, a center of gravity axis extending through a center of the mounting hole and the center of gravity, a leading portion on one side of the center of gravity axis having a leading center of mass, a trailing portion on the other side of the center of gravity axis having a trailing center of mass, a leading impact face, a wear edge having a leading end and a trailing end and facing outward in an unloaded operating condition, a leading axis extending from the center of the mounting hole to the leading end of the wear edge, and a trailing axis extending from the center of the mounting hole to the trailing end of the wear edge, wherein the leading center of mass and the trailing center of mass is within an angle defined between the leading axis and the trailing axis.

A hammer for a shredding machine comprising a mounting hole for mounting the hammer in the shredding machine, a center of gravity, a center of gravity axis extending through a center of the mounting hole and the center of gravity, a wear edge remote from the mounting hole, facing outward in an unloaded operating condition and having a length and a height defined as the distance from the center of the mounting hole to the wear edge along the center of gravity axis, wherein the ratio of the height to the length of the wear edge is less than 0.75.

A hammer comprising two opposite surfaces, a mounting hole extending through the hammer and opening in each of the opposite surfaces to receive a support pin for mounting the shredder hammer in a shredding machine, a peripheral rim connecting the two opposite surfaces and including a wear edge, the wear edge being remote from the mounting hole terminates at a leading face at a first end and a trailing face at a second end, a center of gravity and a center of gravity axis passing through the center of gravity and through the center of the hole defining a trailing portion including the trailing face and a leading portion including the leading face and a leading periphery, wherein the trailing face extends beyond a leading periphery of the leading portion when the leading portion is projected as a mirror image across the center of gravity axis over the trailing portion.

A hammer comprising two major surfaces, a mounting hole extending through the hammer and opening in each of the major surfaces to receive a support pin for mounting the shredder hammer in a shredding machine, a peripheral rim connecting the two major surfaces and including a wear edge, the wear edge being remote from the hole and including a leading end and a trailing end, a center of gravity, a center of gravity axis passing through the center of gravity and the center of the hole, a leading axis extending from the center of the hole to the leading end of the wear edge and a trailing axis extending from the center of the hole to the trailing end of the wear edge, wherein the trailing angle between the center of gravity axis and the trailing axis is greater than the leading angle between the center of gravity axis and the leading axis.

A hammer comprising a pair of major surfaces, a circumferential edge connecting the major surfaces and including a wear edge, a center of gravity, a mounting portion including a mounting hole extending through the hammer and opening in each of the major surfaces to receive a support pin for mounting the hammer in a shredding machine, a center of gravity axis extending through the center of the hole and the center of gravity, a working portion remote from the mounting hole and including the wear edge, a leading impact face, and a trailing face, the wear edge terminating at the leading impact face and the trailing face,an outer datum perpendicular to the center of gravity axis and extending from the intersection of the center of gravity axis with the wear edge toward the leading impact face, and an acceptance gap defined by the distance between the wear edge at the leading impact face and the outer datum that is at least 21 percent of a leading axis distance from the center of the mounting hole to the wear edge at the leading impact face.

A hammer comprising a first surface and a second surface, a circumferential edge connecting the first surface and the second surface and including a wear edge describing an arc terminating at a leading face and a trailing face, a center of gravity, a mounting hole extending through the hammer and opening in the first surface and the second surface to receive a support pin for mounting the shredder hammer in a shredding machine, a center of gravity axis passing through the center of gravity and through the center of the hole defining a trailing portion with the trailing face and a leading portion with the leading face, a transverse line perpendicular to the center of gravity axis and extending from the intersection of center of gravity axis and the wear edge and an acceptance gap angle defined by the transverse line and a gap line extending through the intersection of the transverse line and the wear edge and through the intersection of the arc and the leading face, wherein the acceptance gap angle is greater than 19 degrees.

A hammer comprising two opposite surfaces, a mounting hole extending through the hammer and opening in each of the major surfaces to receive a support pin for mounting the shredder hammer in a shredding machine, a center of gravity, a center of gravity axis passing through the center of gravity and through the center of the hole defining a trailing portion including a trailing face and a leading portion including a leading face and a peripheral rim connecting the two opposite surfaces including a wear edge, the wear edge being remote from the mounting hole and describing an arc that terminates at a leading face and a trailing face, wherein a line between the center of the hole and the terminus of the wear edge at the leading face is inclined to the center of gravity axis by at least 38 degrees.

A shredding machine comprising a rotary head within a shredding chamber, a plurality of hammers each including a mounting hole for mounting the hammer to the rotary head, a center of gravity, a center of gravity axis extending through a center of the mounting hole and the center of gravity, a leading portion on one side of the center of gravity axis including a leading surface that faces in the direction of hammer rotation in an unloaded steady state condition, and a trailing portion on the other side of the center of gravity axis that extends laterally farther from the center of gravity axis than the leading portion.

A method of operating shredding machine comprising mounting a hammer on a rotary head mill by a support pin through a mounting hole of the hammer, the hammer having a center of gravity, a center of gravity axis extending through a center of the mounting hole and the center of gravity, a leading portion on one side of the center of gravity axis including a leading surface that faces in the direction of hammer rotation in an unloaded steady state condition, and a trailing portion on the other side of the center of gravity axis that extends laterally farther from the center of gravity axis than the leading portion, rotating the rotary head such that the leading surface faces in the direction of rotation and feeding material into the shredding machine so that the leading surface impacts the target material fed into the shredding machine.

A method of operating shredding machine comprising mounting a hammer on a rotary head mill by a support pin through a mounting hole of the hammer, the hammer having a center of gravity, a center of gravity axis extending through a center of the mounting hole and the center of gravity, a leading impact face, and a wear edge facing outward in an unloaded operating condition, the wear edge being longer rearward of the center of gravity axis than toward the leading impact face forward of the center of gravity axis, rotating the rotary head such that the leading surface faces in the direction of rotation and feeding material into the shredding machine so that the leading surface impacts the target material fed into the shredding machine.

A method of operating shredding machine comprising mounting a hammer on a rotary head mill by a support pin through a mounting hole of the hammer, the hammer having a center of gravity, a center of gravity axis extending through a center of the mounting hole and the center of gravity, a leading impact face, and a wear edge having a leading end and a trailing end and facing outward in an unloaded operating condition, a leading axis extending from the center of the mounting hole to the leading end of the wear edge, and a trailing axis extending from the center of the mounting hole to the trailing end of the wear edge, wherein a trailing angle between the trailing axis and the center of gravity axis is greater than a leading angle between the leading axis and the center of gravity axis, rotating the rotary head such that the leading surface faces in the direction of rotation and feeding material into the shredding machine so that the leading surface impacts the target material fed into the shredding machine.

A method of operating shredding machine comprising mounting a hammer on a rotary head mill by a support pin through a mounting hole of the hammer, a wear edge having a leading end and facing outward in an unloaded operating condition, a longitudinal axis extending through a center of the mounting hole and a midpoint of the wear edge, a leading section on one side of the longitudinal axis including a leading surface at the leading end that faces in the direction of hammer rotation in an unloaded condition, and a trailing section on the other side of the longitudinal axis that has more mass than the leading section, rotating the rotary head such that the leading surface faces in the direction of rotation, and feeding material into the shredding machine so that the leading surface impacts the target material fed into the shredding machine.

A method of operating shredding machine comprising mounting a hammer on a rotary head mill by a support pin through a mounting hole of the hammer, the hammer having a center of gravity, a center of gravity axis extending through a center of the mounting hole and the center of gravity, a wear edge remote from the mounting hole, facing outward in an unloaded operating condition and having a length, and a height defined as the distance from the center of the mounting hole to the wear edge along the center of gravity axis, wherein the ratio of the height to the length of the wear edge is less than 0.75, rotating the rotary head such that the leading surface faces in the direction of rotation;

• and feeding material into the shredding machine so that the leading surface impacts the target material fed into the shredding machine.\

A hammer for a shredding machine comprising a mounting hole for mounting the hammer in the shredding machine, a center of gravity, a center of gravity axis extending through a center of the mounting hole and the center of gravity, a leading portion on one side of the center of gravity axis having a leading center of mass, a trailing portion on the other side of the center of gravity axis having a trailing center of mass, wherein the trailing center of mass is spaced farther from the center of the mounting hole than the leading center of mass.

A hammer for a shredding machine comprising a mounting hole for mounting the hammer in the shredding machine, a wear edge having a leading end and a trailing end, the wear edge facing outward in an unloaded operating condition, a longitudinal axis extending through a center of the mounting hole and the midpoint of the working end width between the leading end and the trailing end, a leading section on one side of the longitudinal axis including a leading surface that faces in the direction of hammer rotation in an unloaded condition, and a trailing section on the other side of the longitudinal axis that has more mass than the leading section.