Abstract: A saw tooth insert, for securing to a saw plate, comprises a front cutting surface containing two adjacent grooves extending for substantially the entire height of the cutting face and substantially radially outward from the rotational axis of the saw plate. The lower portions of the grooves end on opposite sides of the saw plate and the upper portions of the grooves form a central cutting edge between them and external cutting edges on each side of the cutting face where the grooves meet the side surfaces of the insert.

Abstract: A reamer is provided with substantially helical extending carbide-bladed teeth by forming a reamer body having roughly shaped helical teeth thereon along the front face of each tooth a groove extending rectilinearly lengthwise and obliquely to the reamer axis, inserting into each such groove a small straight carbide strip shaped to fit snugly within the groove, the height of the strip being such that its upper end projects radially, over its whole length, above the tooth end and also beyond the extended diameter of the reamer, such strip also extending obliquely of the reamer axis, and subjecting each such strip to a grinding operation in which its upper end projecting beyond the reamer diameter is first rounded off to conform to the reamer diameter and a first cutting edge is formed at the leading edge thereof, and then the end portion of the strip is separately ground to produce a main cutting edge inclined at an angle to said first cutting edge in the direction of said reamer axis.

Abstract: A rotary cutter, in the nature of a milling cutter, especially for agglomerated foam plastic, has a body with a concentric surface of revolution onto which are brazed block-like carbide cutting elements. The cutting edges of circumferentially adjacent cutting elements lie on lines spaced apart circumferentially by between 0.60 in. (15 mm.) and 0.165 in. (17 mm.), and the kerfs of such cutting elements overlap. The cutting elements are received in shallow axially extending grooves in the body; their axial locations are established by reference to lines scribed around the body at uniform axial intervals.

Abstract: A stacked disc cutter assembly for producing finger joints including a plurality of discs, each of which has a plurality of cutter teeth secured to and projecting radially outwardly therefrom. The discs are of substantially similar outer diameter and when assembled and secured together in side-by-side, contiguous, concentric relationship they form a solid cylindrical core for the assembly. The cutter teeth projecting radially outwardly from the discs and so arranged on the discs that they are spaced apart both axially and circumferentially of the cutter assembly. SUBACKGROUND AND SUMMARY OF THE INVENTIONThis invention relates to a stacked disc cutter assembly for producing finger joint cuts in material, and more particularly to such a stacked disc finger joint cutter assembly wherein cutter teeth thereon are spaced apart both axially and circumferentially about the assembly.In the past, various types of cutter devices have been designed for producing finger joints in material such as wood.

Abstract: A cup-shaped wheel having an abrasive rim is employed to grind the teeth of a circular saw to an improved contour. Only point or edge contact takes place between the abrasive rim and the tooth. This technique is preferably utilized in conjunction with triple-chip type circular saws of the sort used to cut metals such as steel. The contour imparted to the cutting surface of the tooth comprises a section of an elliptical cylinder and exhibits improved steel cutting characteristics when compared to prior art multi-faceted saw teeth. Since only edge contact takes place between the abrasive rim and the tooth, the wheel is essentially self-dressing.