Abstract: A plurality of bushings are coupled to one another via a series of bolts to provide an interlocking, articulating cutter. The bolts have a cylindrical end and a convex end. The convex ends are seated inside a concave socket coupled to the bushings. The cylindrical ends are coupled to a convex nut seated inside another concave socket coupled to an adjacent bushing. The convex ends of the bolts are configured to articulate inside the seat of the concave sockets. A washer may be placed between the bushings to provide a desired amount of flexibility and/or rigidity. The outer surface of the bushing comprises a cutting structure, such as a milled or clad cutting structure.

Abstract: A hacksaw with a reciprocating blade for minimizing the amount of manual action needed to operate the hacksaw. The hacksaw with a reciprocating blade includes a U-shaped housing with a hacksaw blade. A motor assembly is positioned in the interior of the housing. A pair of cam members for converting rotational motion into linear motion are rotatably coupled to the housing. A pair of drive pulleys are coupled to the cam members with one being coupled to the motor assembly. A plurality of idler pulleys are positioned in the interior of the housing. A drive belt links the motor assembly and a second drive pulley. A power source powers the motor assembly. An actuator selectively provides power from the power source to the motor assembly. A holding mechanism for selectively holds the hacksaw blade stationary in conjunction with the motor assembly.

Abstract: A vertical band saw machine includes a first transmitting shaft driven by a drive force of a motor, a second transmitting shaft journaling a lower blade mounting pulley for rotating an endless band saw blade, and a speed ratio varying device coupling the transmitting shafts. The device includes two pitch-variable first and second pulleys mounted on the transmitting shafts, a belt trained on the pulleys, and a control unit operable to move a movable disc of the second pulley toward or away from a fixed disc of the second pulley so as to vary the radial distance between the belt and each of the transmitting shafts, thereby freely varying the speed ratio of the second transmitting shaft to the first transmitting shaft so as to rotate the saw blade at a desired speed.

Abstract: The present invention provides a cutting method of a ceramic honeycomb formed body 5 for cutting the ceramic honeycomb formed body 5 with a fine line stretched at an appropriate tension substantially at right angles to the direction of throughholes 9 thereof. The method comprises the steps of providing a cutting guide groove 10 running through the outer periphery of the ceramic honeycomb formed body substantially at right angles to the direction of throughholes 9, and putting a fine line 2 to the cutting guide groove 10, to cut the ceramic honeycomb formed body 5 only by pressing the fine line 2 against the ceramic honeycomb formed body 5. By using this cutting method, it is possible to cut a ceramic honeycomb formed body having thin partition walls of under 125 &mgr;m without causing a distortion. The possibility to reduce the cutting frequency of the fine line leads to possibility to improve the cutting efficiency.

Abstract: A coping saw includes a housing and a flexible conveyor belt supported by at least three balancing wheels being supported rotatably on said housing. A saw blade is connected with one end of an upper saw blade holding mechanism and one end of a lower saw blade holding mechanism at its two ends respectively. A driving mechanism is driven by a motor and connected to the flexible conveyor belt through a sliding block.

Abstract: The vertical blade saw assembly for ceramic and masonry materials is designed to provide an assembly that allows the user to make cuts of any shape to ceramic tiles and masonry materials in order to permit the installation of precision cuts for a particular setting. The assembly has an electric drive motor that is protected from the coolant used to keep the blade from overheating. The assembly has a plurality of parallel arms that are connected and permit the oscillating motion of the arms. The vertical blade is connected to the arms which place the blade in motion. The assembly has a base unit to provide support for the assembly. A coolant tray is positioned around the base unit. A water pump and accompanying tubing is used to circulate the coolant to the blade. Several cutting blades are also disclosed.

Abstract: The saw includes a frame having an opening with a pair of proximate and distal blade retaining chucks located on respective sides of the opening. A saw blade is retained between the pair of chucks. A plurality of pulleys are attached in spaced relation to the frame including pulleys on opposed sides of the opening. A flexible band is entrained about each of the plurality of pulleys, with the band having a first end operatively connected to the proximate blade retaining chuck and a second end attached to the distal blade retaining chuck. A reciprocating drive is attached to the proximate blade retaining chuck. The reciprocating drive and the flexible band work in conjunction to pull the blade in opposite directions during each cycle of the drive. An alternative embodiment of the present invention may take the form of a stationary table saw.

Abstract: A contour cutting machine comprising a narrow band blade knife driven to oscillate in vertical or Z-direction, a cutting unit carrier having guides and driving means for guiding and driving first and second tool-carrying carriages horizontally in the direction of an Y-axis, and a table with divided plate for supporting and moving the workpiece horizontally in the direction of a X-axis, the table comprises first and second sliders for clamping the workpiece therebetween and moving same in the course of a cutting operation. The blade knife is rotatable about its longitudinal axis between the first and second tool carriages, to face in different directions of cut as required, and passes through a slot in the divided table plate. A hold-down means in the form of a sliding shoe may be provided to bear against the workpiece to prevent it from lifting away from the table plate.

Abstract: The machine tool comprises a frame (1, 2, 3) with two fixing elements (22 and 39) for fastening a scroll saw blade. The fixing element (22) is driven by an electrical motor (5) in a vertical reciprocating movement. The two fixing elements (22 and 39) are linked to each other by a metallic ribbon (45) passing on pulleys (46 to 50). The position of the pulley (47) can be changed by means of a cam (53) acting on an arm (52) so as to stretch the ribbon (45) to the desired value.

Abstract: A cutting apparatus for ceramic green shaped bodies is disclosed, which comprises a cutting frame having two arm portions arranged side by side in the widthwise direction of the ceramic green shaped body. A cutting fine wire directly extends about the two arm portions through a roll arranged in each of the arm portions. The arm portions are moved toward a cutting direction of the ceramic green shaped body to move the cutting fine wire extended about the rolls into the ceramic green shaped body to cut it. The cutting fine wire is moved reciprocally during the moving of the cutting fine wire across the ceramic green shaped body, and while moving the arm portions toward the cutting direction of the ceramic green shaped body.

Abstract: A cutting apparatus designed to produce an oscillating force which is transmitted to a cutting element, said cutting element having a plurality of cutting teeth disposed at intervals in a complete circle around the periphery of the cutting element. The direction of cutting of the cutting teeth of said cutting element is alternated in opposite directions so that when to the cutting element is applied an oscillatory force, half of the cutting teeth will cut in one direction and the other half in the opposite direction. Thus the cutting apparatus disclosed herein is designed to work with any oscillating flexible cutting element of the type described above.

Abstract: An improved wire saw is disclosed in which a linear wire storage means comprises a vertically moving carriage. The carriage is supported by the wire, thereby improving the efficiency and production rate of the saw.

Abstract: This invention relates to gang saws and other cutting apparatus having oscillating cutters for cutting workpieces into slices. The invention provides apparatus, having two elongate spaced apart cutter supports which are driven to oscillate 180.degree. out of phase with each other. Two sets of cutters are connected to the supports. For a suitable workpiece the cutters may be of a hot wire type. Each cutter of one set is connected to the first support by a resiliently extensible connector such as a spring and to the second support by a non-extensible connection. Each cutter of the other set is connected to the second support by a resiliently extensible connector and to the first support by a non extensible connection. Desirably the cutters of one set alternate with cutters of the other and all cutters are coplanar. Movement of cutters of each set in opposite directions tends to cancel the local influence of cutters on the workpiece.

Abstract: Combustible materials, including plastic sheets, plates, and blocks, also leather and all varieties of wood, may be cut along predetermined lines by engaging same with a heated reciprocating wire at temperatures which vaporizes the material rather than melting same. The machine providesa reciprocating wire which is heated by electrical resistance. A system of air quenching of the wire above and below the cutting zone is employed in order to attain incandescent temperatures at the point of cutting.