A cutter edge is caused to slide to generate a plastic deformation on a first surface of a brittle substrate, thus forming a trench line. The trench line is formed so as to obtain a crack-free state in which the brittle substrate seamlessly continues in a direction intersecting the trench line directly below the trench line. The crack-free state is then maintained. A crack of the brittle substrate in its thickness direction is extended along the trench line to form a crack line. The brittle substrate is divided along the crack line.

A monoguide manual cutter is provided, which can comprise a base, a guide arranged longitudinally above the base, a carriage that can be moved along said guide and a tool holder mounted on the carriage and having a handle, a roller for marking a cutting line on the ceramic part and a blank holder for breaking said ceramic part along the cutting line. The aluminium extrusion guide comprises a cross-section with a narrow lower portion and a wider upper portion comprising longitudinal tracks for supporting and linearly moving rolling means of the carriage. The configuration of the guide can make it easier for the operator to view the roller while using the cutter.

A cutter edge is pressed against a brittle-material substrate so that a protruding portion of the cutter edge is positioned between a first edge of the brittle-material substrate and a side portion of the cutter edge and that a side portion of the cutter edge is positioned between the protruding portion of the cutter edge and a second edge of the brittle-material substrate. A scribe line is formed by a scratch between a first position closer to the first edge of the first and second edges and a second position closer to the second edge of the first and second edges. After the formation of the scribe line, a crack is extended in a thickness direction from the second position toward the first position along the scribe line, thus forming a crack line.

A device and method for cleaving a sample includes: creating an indentation on a top surface of the sample by applying a downward force along a vertical axis, the axis arranging perpendicularly to the top surface of the sample; providing a breaking pin and arranging the breaking pin under the sample to touch the bottom surface of the sample at a position that is directly opposite from the indentation; and, applying a downward force on the sample by providing a left side and right side breaker pin wherein the downward force comprises a left-side downward force extended through the left-side breaker pin and right-side downward force through the right side breaker pin, further the pins that provide the left-side and right-side downward force are disposed on a breaker bar and arranged to be on opposite sides of a vertical axis that extends through the indentation on the top surface.

In a glass plate working apparatus 1, a carrying-in position 3, a scribing position 4, a removing position 5, a grinding position 6, and a discharging position 7 are arranged at equal intervals linearly along a transporting direction, and a transporting device 8 for transporting glass plates 2 is additionally provided.

Disclosed is a manual ceramics cutter with detachable accessories, comprising: a base (1) for supporting a ceramic piece to be cut; a manually actuatable cutting head (2); guides (3) for moving the cutting head; and at least one detachable accessory (4a, 4b) for laterally supporting the ceramic piece to be cut and which is provided with fastening means (41) for fastening to the base (1) in an operative use position in which the detachable accessory (4a, 4b) is arranged transversely with respect to the base (1) and projects laterally from the base (1). The cutter comprises magnetic means (11, 42) for fastening the detachable accessory (4a, 4b) to the base of the cutter in an inoperative or transport position, wherein the accessory (4a, 4b) is arranged in a longitudinal direction on the base (1) and does not project practically from the base.

A tile nipper is provided that includes a first member rotatably coupled to a second member. The first cutting edge includes a first cutting edge and the second member includes a second cutting edge. The tile nipper further include an adjustment mechanism configured to adjust a distance between the first cutting edge and the second cutting edge. The adjustment mechanism includes a first component and a second component coupled to the first component. The second component is biased away from the first or second member, and adjusting the first component while forcing the second component towards the first or second member adjusts the distance between the first and second cutting edges.

A manually actuated ceramic cutter includes a work table mounted on a support structure, and a tool-carrier head provided with a cutting tool and with an actuating handle, which tool-carrier head can be moved along longitudinal guide means comprising a single longitudinal guide disposed on one side of the tool-carrier head, the guide being offset from a vertical plane coinciding with the longitudinal path of the cutting tool during the scoring of the ceramic pieces and being attached by the ends thereof to respective sides of supports attached at opposite ends of the support structure. The longitudinal guide includes longitudinal tracks for moving a sliding piece, the side of which piece is provided with a horizontal shaft for rotating the tool-carrier head in a vertical plane.

The present invention relates to a cutting device for manual ceramic cutters. Disclosed is a cutting device for manual ceramic cutters, which comprises a support (1) provided with a vertical hole (11) for mounting a cutting tool (2), and a horizontal hole (12) in which are mounted a handle (3) and a rod (4) for attaching the cutting tool (2). The cutting tool (2) comprises a bar (21) that has at a first end (22) an inclined ramp (27) that facilitates the initial mounting thereof in the support (1), moving the rod (4) backwards and compressing a spring (5) for pushing the rod (4). The front face of the bar (21) comprises a longitudinal groove (26), and the rod (4) comprises a front appendage (42) accommodated in the longitudinal groove (26), immobilising the cutting tool in the support when pressed by the handle (3).

The present invention relates to devices for cutting tile and scoring concrete masonry units. These devices may function without generating large amounts of dust, while still allowing high-throughput cutting and scoring. The present invention features devices for cutting tile that may allow for multiple tiles to be cut simultaneously, thus boosting efficiency. The present invention features devices for scoring concrete masonry units that may enable precision scoring of multiple faces of the CMU. After the CMU is scored by the device of the present invention, it may be easily split along the scoring plane by hitting the top of the CMU with a hammer.