Abstract: A movable handle and a power tool. The power tool comprises a housing, a motor supported by the housing and operable to drive a tool element about an axis, and a handle supported by the housing for rotation relative to the housing about the axis. Preferably, the power tool is a circular saw. The circular saw further comprises a switch assembly supported on the handle for movement with the handle and means for connecting the switch to the motor to accommodate movement of the switch relative to the motor. The switch assembly is electrically connectable to the motor and selectively connects the motor to a power source, and the connecting means includes a wiring arrangement. The circular saw further comprises a locking assembly for locking the handle in a position relative to the housing.

Abstract: A guide for use with a cutting member, such as hand saws, that is easy to use, is readily portable and can be adjusted to permit cutting of precise compound angles on work pieces of various configurations. The guide mechanism comprises two angularly related members arranged so that when one member engages the face of a work piece, the other member functions to glidably engage a cutting member, such as the blade of a hand saw with the teeth thereof in cutting relation with said face of the work piece. In one form of the invention, locking mechanisms are provided to lock the member in any selected angular relation and a magnet is carried by the guide member which uniquely functions to continuously urge the saw into engagement with a plurality of rollers that are also carried by the guide member.

Abstract: Motion mechanism for machine tools, and machine tool with such a motion mechanism. A drive assembly installed on machine tools includes at least one drive unit (18, 25) and, at least one motion guide (6,7) associated with the drive unit (18, 25). The drive unit (18, 25) includes at least one toothed rack (16, 23) and, meshing therewith, at least one drive pinion (17, 24). Components of the motion guide (6, 7) include at least one support structure (8, 3) as well as multiple guide units (10, 21) positioned along the support structure (8, 3) and jointly movably by a drive unit (18, 25). The toothed rack (16, 23) encompasses toothed segments (15, 22) that are at least partially integrated in at least part of the guide units (10, 21), and the guide units concerned (10, 21) are kept in alignment relative to one another so as to form the toothed rack (16, 23).

Abstract: The invention concerns a sawing device comprising a wire assembly (15) supported on wire-guiding rolls (11, 12) and pressed against a workpiece to be sawn (20) fixed on a support table (21). A oscillating device (23) enables to produce a relative reciprocating movement between the workpiece to be sawn and the wire assembly (15) around an oscillation axis (A) whereof the spatial position can be adjusted and programmed so that said oscillation axis (A) is at a programmable and adjustable distance from an effective axis of rotation (28) of the oscillating device (23). In one embodiment, the oscillating device (23) comprises therefor rotating members (27), and translating members along two directions (Z and Y) contained in the cutting plane, thereby enabling to obtain very planar sawn slices with very even surface texture and improved sawing efficiency.

Abstract: A saw table and a pivot foot for use with a saw table. The saw table includes a pair of first sides, a pair of transverse sides, and a saw cradle. The saw cradle is slidably mounted to the saw table and is slidable between first and second positions. The pivot foot has a first end and a second end. The first end has a coupling feature. The pivot foot also includes a workpiece abutment edge. The workpiece abutment edge is adapted to accept an edge of a workpiece. A coupler connects to the coupling feature and is adapted to rotatably couple the pivot foot to the saw table.

Abstract: A saw arrangement that includes two elongated guides and a blade chuck including two guide receptacles that cooperate with the elongated guides. A blade is coupled to the blade chuck and a rotary motor including a drive block and an arm coupled to the blade chuck and the drive block drive the blade during use of the saw arrangement. The blade is generally a circular blade shaped as a wire, thereby allowing for inside cuts on a work piece to be performed.

Abstract: Apparatus and method for handling and cutting a flexible material that is wrapped around a load by means of a delivering device. The apparatus includes a clamp and cutter assembly having a trigger activated mechanism, and a trigger and roping assembly. The apparatus also includes a moving device for moving the trigger and roping assembly between active and retracted positions. In use, as the trigger and roping assembly is moved into its active position, the trigger engages with the trigger activated mechanism to move the clamp and cutter assembly to its open position, while the roper turns a portion of flexible material into a rope. As the trigger and roping assembly is retracted from its active position, the trigger disengages with the trigger activated mechanism to move the clamp and the cutter assembly in its closed position, thereby cutting the rope and holding a free end thereof.

Abstract: A vinyl siding cutter having blade guides suspended over base plate. A vinyl siding cutter that has a blade square on two corners; angled on other two corners to create a single point on cutting edge of blade.

Abstract: A bread slicer that has a knife frame, a damper and a variable rate control. The knife frame is movable between first and second positions. The damper is coupled to the knife frame and is configured to affect the rate of movement of the knife frame. The variable rate control assembly has an actuator coupled with the damper to selectively affect the rate of movement of the knife frame.

Abstract: A glass-plate working apparatus (A) includes a base (2) on which a glass plate (1) is placed; Y-direction movable bases (3) and (4) which are supported by the base (2) movably in a Y-direction perpendicular to an X-direction; a Y-direction moving device (5) for moving the movable bases (3) and (4) in the Y-direction; a frame (8) which is supported by the Y-direction movable bases (3) and (4) via scuffing preventing devices (6) and (7); an X-direction movable base (9) which is supported by the frame (8) movably in the X-direction; an X-direction moving device (10) for moving the X-direction movable base (9) in the X-direction; and a working head (12) mounted on the X-direction movable base (9) so as to form a cut line (11) for bend-breaking on the glass plate (1).

Abstract: A shape memory alloy (SMA) actuator predeformed in compression actuates a cable cutter mechanism. A cable or other item to be cut is placed between an anvil and a movable blade affixed to the SMA element. The SMA element is heated by an electrical resistance heater to cause it to return to its undeformed elongated state, thereby moving the blade against the anvil to compress and sever the cable or other item. Ones of the shape memory alloy actuator have a plurality of parallelly arranged SMA elements, every other one of which is predeformed in compression and intermediate ones of which are predeformed in tension. The elements are coupled end-to-end so that, when they are heated to cause them to return to their undeformed states, their respective elongations and shrinkages combine at the output to produce an actuation that is the cumulation in the same direction of the changes of all the elements. The plurality of elements may be in a side-by-side or concentric arrangement.

Abstract: A mechanism is provided for circumscribing oval paths, wherein a pivotably mounted element is dynamically oriented so as to maintain a functional axis thereof constantly tangent to the circumscribed path. An orienting arm attached to the mounted element is arcuately reciprocated by an element moving unidirectionally in a circle, the direction of circular movement being opposite to that in which the mounted element proceeds.

Abstract: The adhesive tape cutting device includes a cutting blade constrained to a moving support which guides the blade to intercept the tape at a predetermined point on the path of travel of the tape. The blade is constrained in a yielding manner to the support in such a manner that the blade, following its engagement with the tape, is entrained by the latter and then, due to the yielding nature of its constraint with the support, follows the travel of the tape until completion of the tape cut.

Abstract: A portable band saw assembly adapted to be driven by the rear wheel of a bicycle, the assembly including a base having a frame assembly for supporting a continuous saw blade mounted on a pair of grooved wheels, a wheel guide assembly having wheel rim stabilizing assemblies for supporting the rear wheel of the bicycle and a sprocket hub support including a bracket for camming the rear wheel of the bicycle into engagement with one of the saw blade wheels.

Abstract: A drop feed mitering machine includes a work table positioned in a near vertical orientation, a cutting throat running perpendicularly through the machine and a drop feed guide mounted in the region of the cutting throat for guiding a length of molding stock over the cutting throat in a simple gravity assisted drop feed operation. A cutter block is actuated from the front of the machine to sever the molding section positioned over the cutting throat and a front removable scrap bin is provided for removing scraps produced by the cutter block during mitering operations. A feed stop positioned below the feed guide is adjusted to determine the length of the molding piece to be cut. The drop feed machine of the invention can be operated in a confined space because the horizontal feed operations and the horizontally extending feed structures of conventional mitering machines are eliminated.

Abstract: A method and apparatus for cutting a boiler tube-wall of a power generating station comprised of a plurality of generally parallel, vertical tubes welded together lengthwise, the method employing a guide having a pair of parallel guide rods interposed between a pair of securement devices for selectively, removably securing the guide to the tube-wall and a mount slidably mounted on the guide rods for movably supporting an actuatable tool for movement along the guide rods between the securement devices, the method comprising the steps of:(a) mounting a cutting tool to the mount;(b) removably securing the guide to a first location on one vertical surface of the tube-wall, the location being defined by a first line of cut to be made in the tube-wall;(c) actuating the cutting tool; and(d) moving the cutting tool along the guide rods between the securement devices and along the first cut line to cut through the tube-wall and any of the tubes therealong.

Abstract: A punching and shearing machine in which a single hydraulic cylinder (1) operates alternatively the punch or the shear of the machine. When the punch is operative, a manually operated eccentric lever (16) blocks the shear carrying member (8) so that the stem (6) of the piston in the hydraulic cylinder (1) causes motion of the punch carrying member (3). If, on the other hand, the shear is to be operated, another manually operated eccentric lever (14) blocks the punch carrying member (3), so that the external part of the hydraulic cylinder, which is connected to the shear carrying member (8), causes the motion of the shear carrying member only. Safety micro-switches are provided to interrupt the hydraulic circuit controlling the cylinder (1), if the eccentrics (14, 16) are both free or both are blocking a tool carrying member.

Abstract: A method and apparatus for cutting holes of circular or other shape by first cutting at the center of the proposed hole, then cutting to the circumference and following the shape desired. A tool that accomplishes these functions is described which includes a pivoted link attached to a ring at one end and the cutting tool at the other end, when torque is applied to the link the tool follows the desired cutting sequence.

Abstract: Apparatus for scoring pastry includes a planetary train having a stationary wheel and a planet wheel in rolling engagement with the stationary wheel. The planet wheel is driven orbitally about the axis of the stationary wheel. A cutting tool mounted to the planet wheel describes repeating tracings and scores the pastry in a pattern corresponding to such tracings.

Abstract: A punch press (10) having a punching head (30) which includes a large eccentric crankshaft (42) for operating selected punches (32). The large eccentric crankshaft (42) withdraws the punch (32) into an upper tool support (92) for a relatively large portion of the crankshaft rotation. The crankshaft (42) is connected to a selected punch (32) by a suitable mechanical interposer. The upper tool support (92) is provided to hold a variety of punches (32) and is movable to bring a selected punch (32) into position for being operated by the punching head (30). A mechanism is provided for relative positioning of a workpiece and the punching head (30). Since the punch (32) is withdrawn within the upper tool support (92) for a relatively large portion of the crankshaft (42) rotation the movement of the workpiece can take place while the selected punch is moving but withdrawn within the upper tool support (92).

Abstract: The band saw comprises two wheels spaced from each other and mounted for rotation on a support. A saw blade is trained under tension about the wheels, one of which is a power driven wheel. The bearing surfaces of both the wheels are provided with grooves which are closed upon themselves and run parallel to one another and to the rims of the wheels. The individual grooves on the one wheel are aligned with the respective opposite grooves on the other wheel in such a way that the planes running through the same are parallel to one another. The grooves, especially at least those two grooves lying opposite to each other on the one and the other wheel in the direction towards the teething of the saw blade and having the same width and the same depth, provide for an excellent bearing and guiding of the saw blade trained about the wheels. The saw blade need not to be aligned, stretched or levelled during the operation.

Abstract: A moire contour map of a three-dimensional object is obtained by a moire contour measuring system. The moire contour map is used for making a profiling model to be used in a profiling machine to make a number of plates having configurations corresponding to the contour lines of the moire contour map. The number of plates prepared by the profiling machine are stacked to form a stack of plates having a contour approximately equivalent to the contour of the original three-dimensional object. The stacked plates are bound together and a surface smoothing cover or a filling agent is applied on the surface of the stacked plates to form a replica of the object.

Abstract: A device for cutting ovals or circles in sheet material. A baseboard is secured adjustably atop a parallel pair of base channels by a combination of screws and coil springs. A base plate secured to one end of the baseboard supports (1) a pair of swivel-mounted hold-down arms and hold-down pads having swivel-mounted, spring-urged pads; (2) a tee bar with a slidably mounted scaled flat shank portion and a crossbar with a center index line; and (3) an upright frame member. The upright frame member supports a horizontal frame member extending forward over the baseboard and having a pair of spaced-apart transverse guide bars with a longitudinal opening extending in between them. A circular disc is mounted for rotation by a handle, within and tangent to the transverse guide bars, and the disc has a slot extending radially from about the center out toward the circumference of the disc.

Abstract: A cutting apparatus, suitable for cutting or shearing a moving web, comprises first and second wire segments that contact each other at substantially a single point and includes means for causing the point of contact to travel along the length of the wire segments to accomplish the cutting of a web positioned between the wire segments.

Abstract: An apparatus capable of detaching from a body of a material such as hay a portion thereof which then can be transported to a desired location. A prime mover such as a tractor carries at one of its ends, for example, a frame which supports a cutting structure capable of cutting into a body of a material such as hay in such a way as to carry out a slicing action while cutting into the body, so as to detach from the body a portion thereof which then can be transported to a desired location.

Abstract: A band saw in which a continuous, electrically conductive band having cutting teeth along one edge is mounted about spaced apart support pulleys. A linear induction motor drives the band about the pulleys; the motor has a stationary induction field system as the primary driving element of the motor, mounted in operative relation to the band to drive it about the pulleys, and the band itself constitutes the motor armature.

Abstract: An ultrasonic cutting apparatus comprising a tuning fork or U-shaped flexural member having legs on which cutting means are mounted, and an ultrasonic drive connected to the flexural member for inducing ultrasonic vibrations in the flexural member. Also disclosed herein is an ultrasonic drive member having a "folded over" resonant holder, and a piezoelectric crystal compressively mounted in the holder by coupling means for transmitting the ultrasonic excitation from the drive to the flexural member.