A machine for producing tiles from a block, in particular a block of marble, granite and the like, includes a support surface for supporting the block; a plurality of first cutters for cutting the block parallel to a first horizontal direction, the first cutters being placed above the support surface, including respective lower edges, configured to cut the block on the upper part, the lower edges being placed at the same adjustable height, with reference to a vertical direction, and being arranged aligned along at least a first horizontal axis, parallel to a second horizontal line, orthogonal to the first horizontal direction; a second cutter for cutting the block parallel to the second horizontal line, the second cutter being configured to move along a second horizontal axis relative to the support surface, the second horizontal axis being parallel or inclined with respect to the second horizontal line by a first angle α<90°, the second cutter having, during use, a resting position, wherein it does not interact with the block, and a working position, including a lower edge placed at the same adjustable height as the first cutters; a horizontal blade for cutting the block along a horizontal plane, including a first cutting side placed at the same adjustable height as the first cutters, and the support surface is configured to move on the horizontal line along a first cutting direction, relative to the first cutters, to the second cutter, and to the horizontal blade, the horizontal blade being placed downstream of the first horizontal axis and the second horizontal axis, with reference to the first cutting direction. A method for cutting a block of marble and the like, into a plurality of tiles is also disclosed.

A tile saw gauge has a receiver, an extension arm, and a slidable gauge. In one embodiment, the slidable gauge has one or more protrusions for fixing various lengths. The receiver may be permanently attached to a tile saw, such as by welding, or may removably attachable, such as by using screws, a bolt and nut, or similar mechanism. The tile saw gauge may be retrofitted on saws in the art, allowing tile saws in the market to make consistent cuts on larger tiles or tile lengths.

An apparatus for cutting workpieces has a saw and a carousel. The carousel has a plurality of workpiece-holding pockets and is mounted for rotation about a carousel axis to pass the workpiece-holding pockets from a first position remote of the saw through at least a second position proximate the saw.

An apparatus for cutting workpieces has a saw and a carousel. The carousel has a plurality of workpiece-holding pockets and is mounted for rotation about a carousel axis to pass the workpiece-holding pockets from a first position remote of the saw through at least a second position proximate the saw.

A drill ring for a cylindrical core drill bit is disclosed. The drill ring includes at least two ring segments which are constructed from a sintered powder mixture and diamond particles. The diamond particles are arranged on ablation tracks in a plane perpendicular to the cylinder axis and the ring segments are connected to each other on their lateral edges.

A substrate cutting device includes: a first cutter including a plurality of first rotary blades; a second cutter including a plurality of second rotary blades; a first rotation drive unit for rotationally driving the first cutter; a second rotation drive unit for rotationally driving the second cutter; a cutter support unit; and a phase adjustment unit. The cutter support unit supports the first cutter and the second cutter such that the first and second cutters are radially opposed to each other so that rotation axes thereof are parallel to each other. The phase adjustment unit adjusts a phase of at least one of the first cutter and the second cutter such that each of the second rotary blades is located between two adjacent first rotary blades in an opposing area in which the first cutter and the second cutter are opposed to each other.

A novel cutting method and apparatus includes a cutting blade adapted to consistently and easily form a desirable kerf in a concrete substrate while capturing substantially all resulting concrete dust.

A blade drive shaft assembly (100) for a road saw comprising a shaft (120), a first mounting plate (125), a spacer removably fitted (126) on the shaft (120), a second mounting plate (127) removably fitted on the shaft (120), a mounting plate fixing adapted to secure the second mounting plate (127) to the shaft, a first circular saw blade mounted between the first mounting plate and the spacer (126), and a second circular saw blade mounted between the second mounting plate (127) and the spacer (126), wherein the first mounting plate (125) is integrally formed with the shaft (120) from a single piece of metal. A road saw incorporating the assembly is also described, as well as a method of forming, filling and compacting a trench and a method of making a blade drive shaft assembly.

A method for producing a plurality of optical prisms comprises: providing at least one manufacturing intermediate; and dividing the at least one manufacturing intermediate into a plurality of individual triangular prisms. The manufacturing intermediate comprises a main body in the form of a triangular prism having three rectangular surfaces and two triangular surfaces. The main body is formed from a light-transmitting material. A layer of opaque material is provided on two of the three rectangular surfaces of the main body, the layer of opaque material having a plurality of axially spaced apertures on each of the two of the three rectangular surfaces, each one of the apertures on one of the two surfaces being disposed at substantially the same axial position as one of the apertures on the other one of the two surfaces. The at least one manufacturing intermediate is divided into a plurality of individual triangular prisms such that each individual triangular prism has one of the apertures on each of two sides thereof.

A method for producing a plurality of optical prisms comprises: providing at least one manufacturing intermediate; and dividing the at least one manufacturing intermediate into a plurality of individual triangular prisms. The manufacturing intermediate comprises a main body in the form of a triangular prism having three rectangular surfaces and two triangular surfaces. The main body is formed from a light-transmitting material. A layer of opaque material is provided on two of the three rectangular surfaces of the main body, the layer of opaque material having a plurality of axially spaced apertures on each of the two of the three rectangular surfaces, each one of the apertures on one of the two surfaces being disposed at substantially the same axial position as one of the apertures on the other one of the two surfaces. The at least one manufacturing intermediate is divided into a plurality of individual triangular prisms such that each individual triangular prism has one of the apertures on each of two sides thereof.