Rotary blade assembly for pelletizer assembly

Claim 2

An elongated rotary blade assembly of the type received within respective ones of a plurality of circumferentially spaced outwardly open elongated channels extending across and inwardly of the face of a rotary member of a pelletizer to form a cutting circle of blades to cooperate with a bed knife structure for pelletizing material upon rotation of the rotary member and wherein each rotary blade assembly includes a pair of circumferentially spaced elongated cutting blades seated on respective circumferentially spaced sides of one of such channels with the ends of such blades located inwardly of such one channel being spaced from the bottom of such one channel to provide an inner side surface portion of such one channel and with an elongated retaining wedge member disposed between opposed surfaces of the blades for retaining the blades within the rotary member, the improvement comprising: said wedge member including a first blade bearing surface engaging one of said opposed surfaces; said wedge member including a second blade bearing surface engaging the other of said opposed surfaces; and said wedge member having a third surface engagable with the inner side surface portion of such one channel inwardly adjacent the inner end of said one of said blade members.

Claim 3

An elongated rotary blade assembly of the type received within respective ones of a plurality of circumferentially spaced outwardly open elongated channels extending axially across and inwardly of the face of an elongated rotor of a pelletizer comprising: pairs of circumferentially spaced elongated cutting blades seated on circumferentially spaced sides of said channels respectively, with the ends of said blades located inwardly of said channels being spaced from the bottoms of said channels to form side surface portions at the inner ends of said channels, elongated retaining wedge members axially disposed between the circumferentially spaced and opposed surfaces of said pairs of blades, respectively, for retaining said pairs of blades with respect to said rotor, each of said wedge members including a first blade bearing surface engaging one of said opposed surfaces of one of said pairs of blades and a second blade bearing surface engaging the other of said opposed surfaces of said one pair of blades; and each of said wedge members including a third surface spaced inwardly of the inner end of at least one of said blade bearing surfaces, and each of said third surfaces being engagable with the one of said side surface portions adjacent said one of said bearing surfaces.

Claim 4

An elongated rotary blade assembly of the type received within respective ones of a plurality of circumferentially spaced outwardly open elongated channels extending axially across and inwardly of the face of an elongated rotor of a pelletizer comprising: pairs of circumferentially spaced elongated cutting blades seated on circumferentially spaced sides of said channels respectively, with the ends of said blades located inwardly of said channels being spaced from the bottoms of said channels to form side surface portions at the inner ends of said channels, elongated retaining wedge members axially disposed between the circumferentially spaced and opposed surfaces of said pairs of blades, respectively, for retaining said pairs of blades with respect to said rotor, each of said wedge members including a first blade bearing surface engaging one of said opposed surfaces of one of said pairs of blades and a second blade bearing surface engaging the other of said opposed surfaces of said one pair of blades; and each of said wedge members including a third surface spaced inwardly of the inner end of at least one of said blade bearing surfaces, and each of said third surfaces being engagable with the one of said side surface portions adjacent said one of said bearing surfaces.

Claim 5

A blade assembly as specified in claim 2 wherein said third surface is spaced circumferentially with respect to both of said opposed surfaces.

Claim 6

A knife assembly for a pelletizer or the like comprising, a cylindrical rotor having at least one plurality of circumferentially spaced elongated slots extending inwardly and axially thereof, elongated first knife means having transversely spaced longitudinally extending sides with one side thereof in engagement with one axially extending side of said slots, respectively, elongated second knife means having transversely spaced longitudinally extending sides with one side thereof in engagement with the other axially extending side of said slots, respectively, said first and second knife means having sides thereof in opposed spaced relationship with all of said knife means having a cutting portion extending outwardly beyond said slots with the outermost ends thereof movable through a circular cutting path, at least one of said knife means in each of said slots having the inner end thereof spaced from the bottom portion of the slot in which it is located to provide side surface portions of said slots extending outwardly from the inner ends of said slots, said side surface portions being accessible through the space between said opposed sides of said first and second knife means in said slots, respectively, elongated retaining means having transversely spaced longitudinally extending surfaces in engagement with said opposed sides of said first and second knife means, respectively, said retaining means having integral means engaging said side surface portions respectively, and means for securing said retaining means to such a rotor without interfering with the cutting action of said knife means.

Claim 7

A knife assembly for a pelletizer or the like comprising, a cylindrical rotor having at least one plurality of circumferentially spaced elongated slots extending inwardly and axially thereof, elongated first knife means having transversely spaced longitudinally extending sides with one side thereof in engagement with one axially extending side of said slots, respectively, elongated second knife means having transversely spaced longitudinally extending sides with one side thereof in engagement with the other axially extending side of said slots, respectively, said first and second knife means having sides thereof in opposed spaced relationship with all of said knife means having a cutting portion extending outwardly beyond said slots with the outermost ends thereof movable through a circular cutting path, at least one of said knife means in each of said slots having the inner end thereof spaced from the bottom portion of the slot in which it is located to provide side surface portions of said slots extending outwardly from the inner ends of said slots, said side surface portions being accessible through the space between said opposed sides of said first and second knife means in said slots, respectively, elongated retaining means having transversely spaced longitudinally extending surfaces in engagement with said opposed sides of said first and second knife means, respectively, said retaining means having integral means engaging said side surface portions respectively, and means for securing said retaining means to such a rotor without interfering with the cutting action of said knife means.

Claim 8

A knife assembly as specified in claim 4 wherein said first knife means, said second knife means and said slots are each longitudinally coextensive.

Claim 9

A knife assembly as specified in claim 5 wherein each of said retaining means is longitudinally coextensive with each of said knife means.

Claim 10

A knife assembly as specified in claim 4 wherein each of said slots is open ended at each axial end of said rotor.

Claim 11

A knife assembly as specified in claim 7 wherein each of said knife means extends throughout the axial length of the slot within which it is received.

Claim 12

A knife assembly as specified in claim 4 wherein the engagement of said knife means with the sides of said slots is continuous throughout the length thereof.