Abstract: A method for the cutting of block materials, particularly foamed or expanded materials, wherein a knife element having first and second ends is driven in a translatory manner in longitudinal direction so as to perform a reciprocating movement. The driving force is exerted on the first and second end of the knife element, the driving of the first end of the knife element being performed by conversion of a first rotary movement into a first translatory movement, and the driving of the second end of the knife element being performed by conversion of a second rotary movement into a second translatory movement in a sense opposed to that of the first translatory movement.

Abstract: A machine for cutting structural members is described. The machine has an endless travelling wire and a frame arranged around a structural member to be cut. The travelling wire and frame have longitudinal track with carriages with at least one pulley carrying at least one cutting segment. The longitudinal tracks are adapted to be engaged via motion means in arcuate guide slots.

Abstract: An apparatus for cutting green ceramic bodies, includes a traveling path for green ceramic bodies, beds for supporting green ceramic bodies at constant intervals in series along the traveling path, an arm on each side of the traveling path, two drive portions for moving respective arms perpendicularly relative to the traveling path, a drive portion for moving both arms in the same direction as the traveling path, a wire for cutting green ceramic bodies, extending between the arms, and wire supporting portions, on respective arms. Each wire supporting portion includes a servo motor with an axis of rotation, a magnet member around the axis of rotation, a bobbin having a conical surface around which wire is wound, and magnetically coupled to the axis of rotation by the magnet member, and a traversing mechanism for varying the position where the wire is wound around the length of the conical surface.

Abstract: A device for suspending one end of a saw blade (28) in a first arm (14) of a parallelogram-jigsaw, having a second arm (18) parallel to the first arm and having a a saw blade clamp (38) mounted pivotably with respect to the first arm (14). A third arm (36) is provided parallel to the first arm (14) as positive guide and pivotably mounted, of which the length can be slightly extended or reduced in the longitudinal direction under load. The saw blade clamp (38) is mounted pivotably on the ends of the respective first arm (14) and third arm (36) which ends are opposite the rotation axis (12, 43).

Abstract: A scroll sawing machine includes a motor mounted under a table of a machine base, and a saw blade driven by a first output shaft of the motor to reciprocate in an upright direction. First and second sawdust collecting members respectively have first and second intake ports which are respectively disposed above and under the table in the vicinity of the blade so as to collect sawdust scattering around the blade and falling through a hole in the table. A blowing member includes a drive shaft coupled to and driven by a second output shaft of the motor for rotating an impeller for drawing the sawdust from the collecting members into the blowing member for discharge through a discharge port.

Abstract: An apparatus for cutting green ceramic bodies, includes a traveling path for green ceramic bodies, beds for supporting green ceramic bodies at constant intervals in series along the traveling path, an arm on each side of the traveling path, two drive portions for moving respective arms perpendicularly relative to the traveling path, a drive portion for moving both arms in the same direction as the traveling path, a wire for cutting green ceramic bodies, extending between the arms, and wire supporting portions, on respective arms. Each wire supporting portion includes a servo motor with an axis of rotation, a magnet member around the axis of rotation, a bobbin having a conical surface around which wire is wound, and magnetically coupled to the axis of rotation by the magnet member, and a traversing mechanism for varying the position where the wire is wound around the length of the conical surface.

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: A device for suspending one end of a saw blade (28) in a first arm (14) of a parallelogram-jigsaw, having a second arm (18) parallel to the first arm and having a a saw blade clamp (38) mounted pivotably with respect to the first arm (14). A third arm (36) is provided parallel to the first arm (14) as positive guide and pivotably mounted, of which the length can be slightly extended or reduced in the longitudinal direction under load. The saw blade clamp (38) is mounted pivotably on the ends of the respective first arm (14) and third arm (36) which ends are opposite the rotation axis (12, 43).

Abstract: A cutting apparatus for cutting ceramic green bodies is constructed by; a travelling path for travelling a ceramic green body; supporting beds for supporting the ceramic green body arranged on the travelling path with a constant interval; a pair of first arm and second arm arranged movably in a travelling direction of the ceramic green body, which are provided at both side ends of the travelling path; a first drive portion and a second drive portion for moving the first arm and the second arm respectively upward or downward, which are provided to the first arm and the second arm respectively; a fire wire for cutting the ceramic green body extended between the first arm and the second arm; a first fine wire supporting portion and a second fine wire supporting portion for moving the fine wire for cutting the ceramic green body from one side to the other side with a constant tension, when the fine wire traverses the ceramic green body by moving the first and second arms in a cutting direction of the ceramic gree

Abstract: A scroll saw including an adjustable tensioning mechanism is disclosed. The saw includes a housing having an inner surface and a pivoting arm having a rearward end disposed within an opening in the housing. A first blade clamp is disposed at the forward end of the pivoting arm and secures the upper end of a saw blade. The lower end of the saw blade is secured in a second blade clamp disposed at the forward end of a lower arm. A wedge is disposed within the housing, in contact with the inner surface of the housing. The wedge also is disposed in contact with and translatable along a surface of the pivoting arm. A rod is linked to the wedge at one end and extends through the pivoting arm. The rod includes an upwardly turned arm. A cam having a spiral track is rotatably mounted at the front of the pivoting arm with the upwardly turned arm disposed in the track.

Abstract: A saw having a fence assembly (FIG. 4) which is adjustable in position to set cutting thickness with a means of securing said fence assembly to a base (10). The fence assembly consists of a lower fence (20), an upper fence (30), an upper outer fence (38), and a lower outer fence (44) that, together with the base, brackets, and fasteners, restrains a work piece except for motion in-line with the cutting direction. A reciprocating blade (60) that passes through a hole in base (10) is held in a blade support assembly (FIG. 5) that provides a means to tension the blade and holding the blade at proper alignment. Bearings and supports hold the blade assembly in-place relative to the base except for reciprocating motion. A source of reciprocating motion is connected to the blade support assembly. An adjustable brace (84) is set a height just above the work piece, thereby restraining the cut pieces from upward motion.

Abstract: A scroll saw with an adjustable tensioning mechanism includes a housing having an inner surface and a pivoting arm having a rearward end disposed within an opening in the housing. A first blade clamp is disposed at the forward end of the pivoting arm and secures the upper end of a saw blade. The lower end of the saw blade is secured in a second blade clamp disposed at the forward end of a lower arm. A wedge is disposed within the housing, in contact with the inner surface of the housing. The wedge also is disposed in contact with and translatable along a surface of the pivoting arm. A rod is linked to the wedge at one end and extends through the pivoting arm. The rod includes an upwardly turned arm. A cam having a spiral track is rotatably mounted at the front of the pivoting arm with the upwardly turned arm disposed in the track.

Abstract: A scroll saw having a yoke for mounting a saw blade thereto, the yoke adapted to be received by a mounting support on the reciprocating saw. The yoke includes first and second arms and a region connecting the first and second arms, the first and second arms having ends for receiving the end of a saw blade. The first and second arms and the connecting region are formed of a composite material.

Abstract: A scroll saw with an adjustable tensioning mechanism includes a housing having an inner surface and a pivoting arm having a rearward end disposed within an opening in the housing. A first blade clamp is disposed at the forward end of the pivoting arm and secures the upper end of a saw blade. The lower end of the saw blade is secured in a second blade clamp disposed at the forward end of a lower arm. A wedge is disposed within the housing, in contact with the inner surface of the housing. The wedge also is disposed in contact with and translatable along a surface of the pivoting arm. A rod is linked to the wedge at one end and extends through the pivoting arm. The rod includes an upwardly turned arm. A cam having a spiral track is rotatably mounted at the front of the pivoting arm with the upwardly turned arm disposed in the track.

Abstract: A coping saw blade is securely mounted to the upper and lower swinging arms of a coping saw by clamping the upper and lower ends of the blade within slits of positioning devices mounted on front portions of the arms. Both flat blades and blades provided with cross end portions may be clamped by the positioning devices.

Abstract: A scroll saw with an adjustable tensioning mechanism includes a housing having an inner surface and a pivoting arm having a rearward end disposed within an opening in the housing. A first blade clamp is disposed at the forward end of the pivoting arm and secures the upper end of a saw blade. The lower end of the saw blade is secured in a second blade clamp disposed at the forward end of a lower arm. A wedge is disposed within the housing, in contact with the inner surface of the housing. The wedge also is disposed in contact with and translatable along a surface of the pivoting arm. A rod is linked to the wedge at one end and extends through the pivoting arm. The rod includes an upwardly turned arm. A cam having a spiral track is rotatably mounted at the front of the pivoting arm with the upwardly turned arm disposed in the track.

Abstract: A sawing machine includes a base body which has a front portion, a rear portion and a worktable with a working surface, and a support body disposed adjacent to the rear portion. The worktable has a sawing slot that opens at the working surface. An upper hollow arm is fixed to the support body and is located above the working surface. A lower hollow arm is fixed to the support body and is located opposite to the upper hollow arm below the working surface. An upper shaft is mounted rotatably in the upper hollow arm, while a lower shaft is mounted rotatably in the lower hollow arm. A driving mechanism is mounted to the support body to drive the shafts to rotate synchronously. Two saw blade mounting members are mounted slidably and respectively to the hollow arms and define cooperatively a straight line passing through the sawing slot. The sawing machine has a converting unit for converting the synchronous rotations of the shafts into synchronous linear movements of the saw-blade mounting members.

Abstract: A cutting apparatus for foam sponges with irregular contours comprises a foam sponge clamping mechanism, a cutter driving mechanism, a cutter rotating mechanism, a template, and a main frame. The main frame is equipped with a vertical frame on which are mounted a lead screw, a driving motor, and a clamping mechanism constituted of upper and lower clamping plates that are driven by the lead screw to secure foam sponges.

Abstract: A scroll saw having a blinder to shield the rapid up and down movement of the saw blade and outer end of the saw blade arm from the view of the operator, comprising a shield member supported at a spaced apart distance in front of the saw blade arm having a vertical dimension large enough to span the vertical movement of the saw blade arm and block the view of such movement from the operator in front thereof. The shield member is supported in such position by a support arm held by a bracket secured to the vertical shaft which connects the hold down shoe to the elongated stationary arm of the scroll saw.

Abstract: A blade tensioning mechanism for use with a parallel arm saw. A bolt extends between one end of the arms which are pivotably mounted along their length to the supporting framework of the saw and a saw blade is held between the other ends of the arms. A camming device is coupled with one end of the bolt and exerts a camming force on one of the arms when the device is rotated in one direction. This force caused the ends of the arms coupled with the bolt to move together and causes the other ends of the arms to spread apart, and securely hold the saw blade by tension. Rotation of the camming device in the other direction relaxes the tension force for removal and replacement of the blade.

Abstract: A wire saw machine having a wire supply source providing a plurality of strands of wire results in a wire saw system having parallel wires. The wire supply source feed spindle holds a supply source at a slight angle advance to allow the wire to transfer from the supply source to a grooved wire guide in a parallel manner. Two moveable wire guides are used to impart a back and forth motion to the wire over the cutting area and at the same time serve as an intermediate storage area for the wire being used in the cutting area. The wire supply source includes a plurality of individually rotatable wire reels. A friction disc is located between each of the individual wire reels and is held fixed with respect to the spindle.

Abstract: The saw is of the type comprising a blade one of whose ends is firmly fixed to a plate capable of vibrating under the effect of an electro-magnet fed with AC current.In accordance with the invention, the vibrating plate (3) is provided with at least one inertia mass (15).The saw may be used by fixing the blade (5) only to the vibrating plate (3), by one of its ends, the other end remaining free.

Abstract: In an automatic sawing machine wherein a workpiece is moved in two orthogonal directions by a profile control or a numerical control so as to cut a groove of a predetermined profile, the opposite ends of the fret saw blade are synchronously driven by independent pulse motors so as to direct the fret saw blade always in the tangential direction of the profile.

Abstract: A combination band saw, scroll saw and jigsaw having multiple blades driven by a common power source through a system of pulleys and belts, the jigsaw and scroll saw of which are activated by means of a belt-activated drive rod and piston rod system. The band saw is carried by a series of pulleys and the combination saw may be operated with all three blades simultaneously in operable position, or, in the alternative, each blade may be activated individually.