Abstract: A saw blade position setting apparatus of a working table such as a table saw which is mounted on a support frame and to which a blade assembly is mounted with a handle assembly including a handle and a handle shaft held by the support frame to be rotatable and operatively connected to the blade assembly. The blade assembly is supported by a support member connected to the handle shaft. A clutch mechanism is selectively transmitting rotation of the handle to a blade assembly elevating mechanism and a blade assembly inclining mechanism. The elevational position and the inclination of the blade assembly are adjusted in accordance with the rotation of the handle assembly. A rack is secured to the support frame and the handle assembly is moved along the rack to a predetermined angle position. A lock lever is disposed in operative association with the handle assembly and operatively connected to the clutch mechanism.

Abstract: A plate cutting device is provided which is capable of being used to cut a plate along a curve. It is a design directed to the disadvantages such as labor-consumption, awkwardness, incapability of cutting along a curve, and incapability of cutting a large size plate of conventional cutting tools.The device is characterized in that it comprises a body associated with a curved frame, a toothed rolling wheel, and a cutting wheel. The two wheels are arranged slantly and are at a small distance from each other.In plate work, a plate with a line drawn on it is put between the wheels and the ratchet rotating wheel above the rolling wheel is swung such that the toothed rolling wheel is rotated in the same direction and the teeth thereon grab into plate and cooperate with the cutting wheel to cut the plate. The cutting direction can be controlled simply by moving the plate in a suitable direction.

Abstract: A radial arm saw includes a saw assembly pivotally mounted to a support unit which, in turn, is mounted to a wall or other support structure. The saw assembly includes a column that is connectable at one end to a saw table frame or the support unit so as to be affixed in upright operative position during operation and disposed during non-operation in a lateral, storage position. A radial arm and saw unit are supported from the other end of the column. Preferably, the column is pivotal between a lateral stored position and an upright operative position. Also, the saw assembly is pivotal relative to the support unit between a vertical stored position and a horizontal operative position. A leg locking sleeve may be released to deploy the saw assembly from its stored position into its operative position. The support column may be detachable to shift the radial arm saw between operative and stored positions.

Abstract: The table of a mitre saw has an extension table detachably attached thereto at each end. The extension table carries a fence in alignment with the mitre table fence, and the fence carries a movable stop and index scale. The stop can be fit on either the left or right extension table fence. The mitre saw is preferably mounted on its own base, with the base being provided with wheels for easy transport and removable legs for support. The left and right extension tables each have pivotable support legs and, when detached, the extension tables are carried and protected in a carrying case.

Abstract: A portable radial arm machine having two principle components. The machine is easily disassembled and quickly assembled in either a working mode or in a compact portable mode having the characteristics of a piece of luggage so that the machine can be transported easily from location to location and readily placed in operation.

Abstract: Apparatus for cutting miters on two side trim members which are bonded to the respective portions of the edge face of a panel (such as a table top), and on a head trim member which is to be bonded to the portion of the edge face of the panel between the side trim members has a first support for the panel with one or more abutments for the panel and one side trim member, and a mobile abutment which is reciprocable along the portion of the edge face between the side trim members to cause the generation of a signal when it reaches the other side trim member. The signals are used to stop the motor for adjustment of one of two mirror symmetrical sawing machines which are used to sever the trim members by moving their blades at right angles to the plane of the panel. The head trim member is mounted in a clamping device which carries adjustable stops and adjustable jaws for engagement with spaced-apart portions of the head trim member at a level above or below the panel.

Abstract: A scoring saw is disclosed for use in association with a main saw blade and disposed forwardly of the main saw blade and rotating in the opposite direction. A mechanical connection transmits the power from the main blade to the scoring blade. The mechanical connection is mounted in a longitudinal casing which is pivotally carried at one end on the axle of the main blade and which rotatively carries the scoring blade at its free end. A support assembly is constructed and arranged to vertically adjust the casing and therefore the scoring blade. An adjustment is further provided to transversely align the scoring blade with the main blade.

Abstract: A machine saw comprises a machine frame, a slotted flat plate rotatable about a vertical axis and serving to receive a workpiece to be sawn, a motor-driven circular saw blade which is rotatable about a horizontal axis of rotation and is adapted to be passed upwards through the slot in the rotatable plate from beneath during sawing, a clamping bridge which is fixed in relation to the frame and spans the rotatable plate and a clamping device mounted by the bridge for clamping a workpiece on the rotatable plate. Part of the clamping device is formed by a clamping jaw movable vertically upwards and downwards and adapted to be set down onto the workpiece, this clamping jaw being rotatable about the axis of rotation of the rotatable plate and displaceable at right angles to this axis of rotation in a sliding guide means.

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 tool elevation and bevel adjustment machanism for a direct drive power tool (e.g., a direct drive table saw) is disclosed in which the power tool's drive motor is mounted on a plate which is pivotally suspended below the work table of the power tool. A working tool (e.g., a circular saw blade) is mounted on the rotor shaft of the motor. The plate with the motor mounted thereon is selectively pivotal with respect to the work table by means of a screw linkage such that the plate, together with the tool, may be selectively adjusted with respect to the table such that the tool is either perpendicular to the work table or is at a desired bevel angle with respect to the work table. Additionally, the motor is pivotally mounted on the plate for arcuate movement with respect to the plate.

Abstract: A portable sawing device having a frame attachable by clamping means against the underside of a workpiece support bench. A portable circular power saw is supported on and engaged by an adapter plate hinged to a bearing plate at the forward part of a supporting arm. The adapter plate with the saw is movable about the horizontal hinge axis, between a lowered cutting position and a raised, tilted-up, non-cutting position, and is spring biased upwardly. The supporting arm comprises two concentric telescoped cylinders: the inner, bearing the saw, is rotatable within the outer and lockable thereto for bevel cutting; the outer is cantilevered forwardly from a support column vertically disposed behind the bench. The column is carried by a horizontal cross member secured between the ends of two parallel rods horizontally and forwardly disposed beneath the frame and slidably mounted in sleeves which are secured to a plate rotatably and lockably attached to the frame.

Abstract: A radial arm assembly for mounting a power saw, the assembly comprising: a horizontally disposed base frame; two vertically oriented mounting posts disposed at opposite sides of an edge of the base frame; a cross-bar horizontally mounted on the posts at opposite ends of the cross-bar; an arm for supporting the saw, the arm being attached to the cross-bar substantially centered between the ends, the arm adapted to rotate over the base frame about a vertical axis, the arm comprising a guideway along substantially all of the arm; and, the saw being mounted on the arm and adapted to translate along the guideway, a blade of the saw being moveable with the saw along said guideway, unobstructed by either of the posts, and to and from a position substantially beneath the vertical axis, whereby cuts substantially corresponding to the full length of the arm may be effected.

Abstract: A control and guidance apparatus for use with a powered saw comprising a pair of parallel elongated rail members telescopically adjustable for defining a cutting path for said saw, a carriage supporting said saw and slidably mounted on the rail members for independent movement therealong and with a saw mount opening in the surface of the carriage, a third elongated rail member substantially parallel to the pair of elongated rail members, guide members mounted to the distal end of each of the parallel elongated rail members for slidably engaging the third elongated rail member, and a cord member connected to the distal end of each of the pair of elongated rail members and provided through a series of pulleys and wound about a spool for imparting arcuate movement to the pair of elongated rail members whereby the pair of elongated members telescopically lengthen as a function of the rotation of the spool.

Abstract: A miter saw guide for making miter cuts on a workpiece comprising an upright rectangular stand supporting a pair of horizontal plates at its respective end portions. An upright bridge assembly transversely spans the frame between the plates and defines a workpiece travel path. A track assembly extends longitudinally of the frame between the bridge and workpiece path and overlies the plates at its respective end portions. Turntable bearing means connect the track assembly to the bridge and forms a vertical axis for horizontal pivoting movement of the track assembly in opposing directions. A cradle is supported by the track assembly for to and fro longitudinal movement. At least one electric miter hand saw is secured to the saw cradle with its cutting blade intersecting the workpiece path during cradle movement.

Abstract: A table extension for a table saw comprises a generally rectangular member extending from one end of the table, and a clamp for securing the member to a rail at that end of the table such that the top surface of the member and that of the table are substantially coplanar. A leg structure is secured to the underside of the member, which leg structure projects downwardly terminating in rollers which are adapted to engage a bearing plate on the saw table support. A pair of brace rods extend upwardly from the leg structure for engagement with a bottom plate on the underside of the extension.

Abstract: The front panel of a table saw has a lever which controls the elevation of the saw blade relative to the saw table. The elevation control lever is also coupled to a bevel control means for tilting the saw blade (and its driving motor) with respect to the table. The combination of these translational and bevel movements results in a relatively large traverse of the elevation control lever. The elevation control lever projects through an opening in the front panel of the housing for the table saw, and this opening is of sufficient size and shape to accommodate the total excursion of the elevation control lever in its traverse. An articulated cover means is provided within the housing to prevent dust from entering into the housing via the opening, as well as to prevent inadvertent contact with the operating mechanism. This articulated cover means includes a first cover member which is disposed substantially flush against the opening on the inside of the front panel.

Abstract: A motor operated circular miter chop saw is pivotally mounted on a generally horizontal axle pivot pin about which it rotates in a vertical plane with the axle pivot pin being carried by a cast support base structure provided with means allowing both lateral adjustment and vertical adjustment of each end of the axle pivot pin. Angular orientation of the work piece is provided by an angularly adjustable fence rotatably carried by the cast base.

Abstract: A machine for processing wood logs for construction of log houses. The machine includes means to load raw logs into a self-centering means, whereby a carriage assembly can be centered over the logs and the log is mounted in the carriage on powered centers, by means of which it can be rotated. The carriage travels longitudinally on tracks on a linear frame past a plurality of rotating cutters. As the log rotates the cutters cut the log down to a selected final diameter. The carriage is then run back to its starting point, the centers are locked so that the log cannot rotate and two cutters are positioned at equal distances above and below the axis of the log to cut tongues and grooves on the top and bottom of the log, respectively. Additional means are provided for cutting a saddle notch beneath the log, to cut the logs to precise length, to cut a vertical notch in each end for the purpose of joining logs end-to-end, and means for longitudinally slitting the log.

Abstract: A belt driven table saw having a open bottom base below the worktable enclosing saw tilting and elevating mechanism and a driving motor mounted outboard of the base has a sawdust collector bag detachably connected to and closing the bottom of the base for collecting downwardly directed sawdust, a centrifugal blower having a casing fixed to the motor and an impeller therein fixed to the motor shaft withdraws fine sawdust from a hinged saw guard and from the base through flexible conduits and discharges it into a second collector bag attached to the blower outlet, a swinging baffle plate and suitable foam rubber sealing means permits maintaining a subatmospheric pressure in the base.

Abstract: A saw support member for supporting a portable power circular saw is pivotably mounted to a platform defining a workpiece support surface. A pair of fences are pivotally connected on a fixed vertical axis to the platform. First and second arcuate guide slots are defined within the platform in arcs concentric about the fence pivot vertical axis. Each fence has spaced apart first and second guide members projecting therefrom into the first and second associated guide slots, respectively, for guiding the movement of the associated fence at spaced locations along its length. Means are provided for releasably restraining each fence from pivotable movement relative to the platform.

Abstract: A scoring blade operating in advance of the main blade of a tilting arbor saw is mounted to tilt with the main saw blade. Provision is made for adjusting the scoring blade laterally and vertically.

Abstract: The invention is directed to a power tool apparatus such as a table saw which includes a housing having a table top with an appropriate opening for a motor driven tool. Pivotally mounted within the housing is an assembly which in the disclosed embodiment includes a frame having a subassembly pivotally mounted therein. A subassembly includes the tool, such as a saw blade, and the means for driving same. A first control includes a lever connected to the subassembly for pivoting same. The pivotal movement effected by the lever allows for quick and coarse setting of the tool at a desired elevation with respect to the tabletop. The control lever further includes a locking arrangement disposed thereon which is manipulatable by the same hand used to coarsely set the tool elevation. The locking arrangement secures the lever to the frame at the desired coarse setting.

Abstract: There is disclosed an improved bevel angle setting means for supporting and pivoting the motor-driven tool supporting assembly of a power tool apparatus including a housing equipped with a table top having an opening through which the motor-driven tool, such as a circular saw, extends; the improvement comprising means for supporting and pivoting the assembly about a pivot axis in a rapid manner whereby the bevel angle is varied. The pivoting means include a bevel handle secured to the assembly frame and a counterbalance means such as a "gas spring," which will be more fully explained hereinafter. The gas spring will act to assist the operator in adjusting the bevel angle setting for both increasing or decreasing of such bevel angle settings.

Abstract: A device attachable to a table saw mitre gauge, the device including a flat plate that adjustably bolts to the gauge so as to give a longer surface against which work is held and the flat plate supports an adjustable block against which an end of the work can be abutted for controlling a length of the work that is being sawed.

Abstract: There is disclosed an elevation setting mechanism for a motor-driven tool in a power tool apparatus such as a table saw. The table saw described includes a housing having a table top with an opening through which the motor-driven tool in the form of a saw blade can pass, and an assembly including a frame pivotally mounted in the housing about a first axis. Pivotally mounted in the frame about a second pivot axis is a first subassembly which includes the saw blade. Further, there is included a second subassembly pivotally mounted about the second pivot axis. The basic elevation setting mechanism includes a control lever operatively connected to the second subassembly for pivoting same, and means connecting the two subassemblies, such that they pivot in unison, in response to action of the control lever, for purposes of setting the tool at a coarse level.

Abstract: A motor operated circular miter chop saw is pivotally mounted on a generally horizontal axle pivot bolt about which it rotates in a vertical plane with the axle pivot bolt being carried by a cast support base structure provided with means allowing lateral adjustment of one end of the axle pivot bolt and vertical adjustment of the other end. Angular orientation of the work piece is provided by an angularly adjustable fence rotatably carried by the cast base support structure with the fence having lugs cooperating with an arcuate slot or groove provided in the cast base support structure. The cast base support structure is also provided with an arcuate slot to provide clearance for the circular saw blade while an adjustable stop is provided carried by the cast support base to preclude the circular saw blade from contacting the cast support base structure. Spring means are also provided for biasing the saw to an upwardly pivoted position.

Abstract: The specification discloses a saw having a circular saw blade wherein a motor for driving the saw blade and a bearing for the saw blade spindle are mounted on a mounting frame which is positioned below a work table and can be raised and lowered in a pivoting movement about a horizontal pivoting axis parallel to the spindle axis. The mounting frame is suspended in a tiltable cradle suspended in a circular work support which is flush with the top of the work table and is rotatably mounted in a circular opening therein. When the mounting frame is raised the saw blade will project through a slot in the support. The mounting frame is operated by a thin bar projecting through the slot in the support and carrying a handle above the work table. The bar is integral with a riving knife. It is rotatably mounted about the saw blade axis, and it is connected to the cradle by a linkage formed by an articulated rod and the mounting frame.

Abstract: Method and machine and a log product for log house construction includes improvements in apparatus to shape, and finish the logs, divide into halves or quarter sections for tongue-and-groove assembly construction of floors, walls, or ceilings appurtenant to the log house. Equally-spaced holes between the tongues and grooves provide additional functional uses for utility lines or vertical supports as needed. The logs are finished by spraying them with selected fluids such as preservatives.

Abstract: A portable bench frame suitable for precision woodworking particularly in relatively large workpieces is shown. The bench frame comprises a substantially large rectangular frame supported by two pairs of foldable legs. A traverse beam is suspended above the middle longitudinal portion of the bench top. The beam is mounted to two spaced telescopic columns located at the corners of the rear edge of the bench top. The telescopic columns are adjustable to raise or lower the traverse beam with respect to the bench top. A rotatable work table top is removably mounted on the bench top and a plurality of basic woodworking tools such as a rotary saw, a lathe, a drill press may be mounted on the frame so that these tools are conveniently available for performing various woodworking operations without having to remove or re-mount tools. The tools can be arranged such that each tool does not interfere with the working of the other tools mounted on te bench frame.

Abstract: An elongated hollow miter box embodying spaced-apart top and bottom walls has its ends bevelled on a 45.degree. bias. A pair of fixed guide edges on the top wall of the box are parallel to the bevelled ends and serve to guide the usual slide shoe of a portable electric saw over the top wall to effect a 45.degree. cut through either end of a wooden molding or other strip which is positioned and held on the bottom wall of the box. Near one end of the box, a transverse cross cut in the top wall cooperates with an auxiliary guide piece which, when placed on the top wall, presents an edge which guides the saw shoe transversely over the top wall and enables a 90.degree. cut to be made in the wooden strip. An opening in the medial region of the top wall affords finger access to the molding or other wooden strip for steadying purposes during making either a 45.degree. or a 90.degree. cut.

Abstract: A power miter saw of the type comprising a bridgeshaped base member and a main swinging lever pivotally mounted therebelow for motion about a vertical axis, the improvements which comprise a one hand operated detent and locking means at the front end of the swinging lever; and an improved saw mounting means at the rear end of the lever which defines the upper and lower limits of motion of the saw, which permits locking the saw down close to the base, and which normally bias the saw to a "ready" position.

Abstract: An adjustable cutting machine having a pivoted frame and means for adjusting and locking the angular position of the frame for cutting sheet material at a desired angle.

Abstract: A miter table assembly adapted to produce miter cuts with a power saw, such as a circular handsaw, and which is particularly adapted to be safe to operate and readily collapsible for easy transportation from one job site to another. This miter table assembly comprises a table top, hollow legs pivoted to the table top, bars or struts each removably engaging a pair of legs to hold the same in operative position and stowable in a hollow leg for transportation, an elongated base with a channel extending transversely thereof, a guide frame pivoting on top of the elongated base about an upright pivot axis, defining a straight slot upwardly registering with the transverse channel and adapted to slidably support and guide a power handsaw, stopping devices secured to the guide frame to prevent falling of the saw at either end of the slot and allowing selective removal of the saw, and clamping levers on opposite sides of the channel and of the base to clamp both cut pieces of work on either side of the base.

Abstract: A rotatable work holder is used to automate the cutting of rings against fixed blades.