Recutter screen

Claim 2

A recutter screen comprising a sheet of metal in arcuate form having rows of punched rectangular openings therein from which the metal has been completely removed, and which openings are separated by bars formed by the material of the sheet, some of which extend generally longitudinally of the screen, edges of the latter bars being bent in inwardly offset condition to provide shearing blades at the edges of openings.

Claim 3

In a grinder having a rotatable cylindrical cutter with knives, a recutter screen in arcuate form having rows of punched rectangular openings therein separated by bars formed by the material of the sheet, some of which extend generally longitudinally of the screen, said latter bars having opposite edges bent to provide oppositely positioned fixed shearing blades, said recutter screen being positioned concentrically of the axis of rotation of the cutter and in a position where the rotating knives coact in shearing relationship with inwardly offset edges of the bars, said screen being shaped so that it can be reversed in position when one set of fixed blades becomes worn to permit use of the opposite set of blades, and means for readily detachably connecting the screen in either of its alternative positions.

Claim 4

In a grinder having a rotatable cylindrical cutter with knives, a recutter screen in arcuate form having rows of punched rectangular openings therein separated by bars formed by the material of the sheet, some of which extend generally longitudinally of the screen, said latter bars having opposite edges bent to provide oppositely positioned fixed shearing blades, said recutter screen being positioned concentrically of the axis of rotation of the cutter and in a position where the rotating knives coact in shearing relationship with inwardly offset edges of the bars, said screen being shaped so that it can be reversed in position when one set of fixed blades becomes worn to permit use of the opposite set of blades, and means for readily detachably connecting the screen in either of its alternative positions.

Claim 5

In a grinder having end walls and having a rotatable cylindrical cutter with knives, a recutter screen in arcuate form having openings therein, said recutter screen being positioned concentrically of the axis of rotation of the cutter and in a position where the rotating knives coact in shearing relationship therewith, the improvement comprising means for removably maintaining the screen in said position, said means comprising a curved abutment member adjustably connected to the inner side of each end wall of the grinder, each of which has an arcuate abutment edge concentric with the axis of rotation of the cylindrical cutter against which the inner face of an end of the screen is removably seated, elongated retainers secured to and projecting from the outer face of the screen adjacent the upper and lower edges thereof, each having a transversely extending shoulder, an elongated rod positioned against the outer face of the screen to form a seat for the shoulder of each retainer, there being openings in the end walls of the grinder through which the ends of the rods are received, the openings for one of said rods being slotted, and means on the end walls for adjusting the last mentioned rod in the slotted openings to draw the ends of the screen into abutment with the arcuate edges of the abutment members.

Claim 6

In a grinder having end walls and having a rotatable cylindrical cutter with knives, a recutter screen in arcuate form having openings therein, said recutter screen being positioned concentrically of the axis of rotation of the cutter and in a position where the rotating knives coact in shearing relationship therewith, the improvement comprising means for removably maintaining the screen in said position, said means comprising a curved abutment member adjustably connected to the inner side of each end wall of the grinder, each of which has an arcuate abutment edge concentric with the axis of rotation of the cylindrical cutter against which the inner face of an end of the screen is removably seated, elongated retainers secured to and projecting from the outer face of the screen adjacent the upper and lower edges thereof, each having a transversely extending shoulder, an elongated rod positioned against the outer face of the screen to form a seat for the shoulder of each retainer, there being openings in the end walls of the grinder through which the ends of the rods are received, the openings for one of said rods being slotted, and means on the end walls for adjusting the last mentioned rod in the slotted openings to draw the ends of the screen into abutment with the arcuate edges of the abutment members.