Abstract: Cutting filaments having a long service life consist of a monofilament of a synthetic polymer into which from 0.3 to 10 percent by weight of an abrasive are incorporated. In the cutting process the abrasive is not ripped off, as it does happen with steel wires bearing the abrasive on their surface, but it is pressed into the monofilament and can be easily recovered therefrom.

Abstract: Lap cutting blades are provided which are useable for the multiple lap cung of solid materials, such as semiconductorrods. The blades each have a generally rectilinear cutting edge, the length of which is 1-75 times the thickness of the blade, as measured at its cutting edge. The cutting edge of each blade has rectilinear edge portions separated by a plurality of notched edge portions which, in turn, define a plurality of recesses which encompass 5 to 25% of the total blade length and 5 to 40% of the effective operating length of the blade. The notched blade edge portions define a notch angle of between 20 and 80 degrees, as measured between the tangent thereto at its point of intersection with the rectilinear cutting edge portion and a line perpendicular to the rectilinear cutting edge portion.

Abstract: A saw blade construction and method of forming such blade whereby the ends of a saw blade are abutted into end to end relationship to define an endless saw blade having a series of teeth formed along one edge to define a cutting edge, and having a back edge which is progressively sloped or tapered in opposite directions from an intermediate point on the back edge so that in a cutting operation the saw blade effects a cut along an edge portion of a workpiece on the down feed stroke of the blade and a progressive cut on the opposite edge of the workpiece whereby the teeth are rendered self-feeding on the progressive cut of the workpiece. In a modified embodiment the saw blade is formed with a plurality of alternate disposed down feed and progressive cutting edges.

Abstract: A self-contained, multi-blade package is constructed to be mounted in the blade head assembly of a slurry saw for cutting hard materials such as quartz, silicon, germanium, and the like. The blade package is pre-assembled with connecting rods extending through aligned holes of spacer plates and end caps which extend above and below the blades at either end of the blades. At least one end cap of each pair is drilled with a through hole or holes and counter bored to receive a nut threaded on the connecting rod which projects into the counter bore. The end caps have a thickness on the order of one-half their width dimension resulting in great dimensional stability. This prevents distortion of the blade pack when the nuts are tightened on the connecting rods ensuring parallelism and rigidity of the blade package. The end caps further eliminate the need for clamping blocks normally used in the blade head assembly of slurry saws thereby permitting more blades to be incorporated in the blade package.

Abstract: The present jig saw blade is constructed for heavy duty work, such as cutting through concrete or masonry. For this purpose, the blade is provided with a cooling channel extending longitudinally through the length of the blade and branch channels extend laterally through the body of the blade from a narrow side thereof and into the longitudinal channel. The lower end of the longitudinal channel is closed and the upper end is arranged for connection to a cooling fluid supply.

Abstract: A cutting tool is disclosed comprising a plurality of blocks of composite, comminuted abrasive in a metal matrix, resiliently mounted to a metallic substrate by an elastically pliant epoxy based adhesive. In a preferred embodiment of the invention a relatively thin layer or film comprising a flexible metal such as copper, metallurgically bonded to the metal matrix, is sandwiched between the blocks and the epoxy adhesive, and contributes to the resiliency of the mounting, and promotes bonding to the epoxy.