Abstract: A device attachable to a milling machine vise for positioning a workpiece in the opening between vise jaws. A rigid bar has means for quickly and accurately clamping the positioning device to parallel sides of a precision vise of standard width. An adjustable rigid intermediate member connected to an outer end of the bar has means for clamping a workpiece contacting rod cantilevered into the vise jaw opening. The workpiece contacting rod is slidably adjusted relative to the intermediate member. It has a contact surface perpendicular to the rod axis. Positioning device surfaces of the present invention are machined parallel to a bar alignment surface. When the bar is attached to a vise, the alignment surface is clamped against the side of the vise substantially parallel to that side. In this manner the workpiece contacting surface of the rod always remains square to the workpiece holding surfaces of the vise jaws, regardless of device position adjustment.

Abstract: An apparatus for holding and positioning a substrate or wafer cassette has a receiving plate which is adjustable on a three-point mounting and is lockable in its position of adjustment. The receiving plate carries runner receivers for initial guidance of a cassette onto the plate by engagement with guide runners on the cassette, and locking pins for the final location of the cassette by engagement with marginal strips on the base of the cassette.

Abstract: In a saw table of the type including an elevated track in which the sole plate of a circular saw is engageable, improvements include the provisions of a cross-cut fence which is rotatable about its axis to be movable to a stored, non-obstructing position; the provision of an adjustable miter fence; the provision of a telescopically adjustable track stop to increase the effective cutting length on the table, and the provision of an improved blade guard retractor.

Abstract: A storable squaring arm for use with a shear and comprising a forward section and a rear section which extend substantially parallel to the rails of the work-piece-supporting stand of the shear. The rear end of the forward section is pivotally attached to the forward end of the rear section to swing about a transversely extending axis. The rear section is pivotally attached to one of the rails to swing about a longitudinally extending axis. In order to store the squaring arm, the forward section is pivoted rearwardly about the transverse axis to a folded position on top of the rear section. The rear section is then pivoted about the longitudinal axis to a stored position below the top of the rail.

Abstract: An alignment device is provided with stop members that are rotatably supported on a block member in a manner such that said stop members contact the edge of the sheet along the axis about which the stop members rotate.

Abstract: A device for setting a workpiece to position comprising a rod securely fixed at one end to a workpiece backing plate and back and forth movably fitted in a support stand, a dial threadedly secured to a threaded portion formed on a rear peripheral edge portion of said support stand, and a stopper provided at the rear end of said dial which is connected to said rod and which operates to regulate the movement of said workpiece backing plate by abutting against the rear end face of the dial, whereby the movement of the workpiece backing plate can be set to a value proportional to the setting of the dial.

Abstract: A woodworking fence includes a dovetail slot into which a stop block and a push fixture each having a dovetail protrusion are in slidable engagement. Operation of a thumbscrew extending through the stop block wedges the block protrusion into firm fixed engagement with the fence dovetail slot. A bottom section of the stop block is undercut to form a relieved space which prevents accumulation of chips resulting from a cutting operation. A workpiece is pushed into a cutter by the push fixture which slides along a work surface and is kept in alignment by the push fixture dovetail protrusion sliding in the fence slot. The push fixture is relieved away from the work surface to avoid damage to the push fixture as the cutting tool cuts the portion of the workpiece adjacent to the push fixture. An erasable polycarbonate strip is disposed on the fence and has a permanent arrow locating the center of the cutting tool, to assist in locating the workpieces and stop block.

Abstract: Apparatus, having a principal body portion which is in the form of a box-like configuration, and a screw member threadably engaged into a port in the face of the body portion. The screw member includes a four flat sided body portion on its end, with a portion of the body portion threaded to threadably engage into the body of the apparatus. There is further included a spring loaded second screw member on a second face of the body meeting said perpendicular to the setting of the first screw, so that the end portion of the spring loaded second screw makes contact with the four flat sided body of the principal screw member. The four flat sided body is so calibrated so that as one complete turn of the principal screw is made, the screw either moves inward or outward 1/16 of an inch. Furthermore, each time one of the four flat faces of the body is moved to make contact with the second screw member, the screw has moved in or out a distance of 1/64 of an inch.

Abstract: The present invention is an improved adjustable locating block assembly for use on a fixture to hold a work piece. The assembly includes a locating block with a slot formed therein, a slot formed in a portion of a fixture to which the locating block is to be secured, and an intermediate block with raised surface portions on each side thereof adopted to mate with respective ones of the slots. The respective mating slots and raised surface portions have longitudinal axis extending at substantially right angles to each other. The locating block and intermediate block are secured to a fixture support with a slot formed therein such that the raised surface portions are adjustably positioned within the slots. Rows of holes are made opening into the slots and through the raised surface portions. Once the holes are aligned, rods are inserted to lock the locating block in a particular position.

Abstract: A programmable bed is provided for machine tools and the like, such as routers, boring tools, and other powered cutters and shapers. The programmable bed has a platen shaped to support differently sized workpieces thereon, and includes a plurality of retractable stops slidably mounted in the platen. The stops are selectively and individually shifted vertically between extended and retracted positions in response to the identification of a particular workpiece, so as to automatically locate or index the same on the platen at a preselected position relative to the machine tool. A plurality of pop-up suction chucks are also slidably mounted in the platen, and are selectively communicated with a source of vacuum. The suction chucks are reciprocated vertically between a retracted disengaged position, and an extended engaged position abutting an adjacent surface of the workpiece, so as to securely retain the workpiece in its preselected position during the machining operation.

Abstract: Glass cutting apparatus which includes a base with a fixed, glass positioning fence along one edge thereof and a removable, pivotable glass cutter guide which can be locked to the base at a selected angle relative to the fixed fence, allowing glass to be scored at any selected angle with respect to the fence. A variety of accessories allow the glass being worked to be securely positioned on the base; one of these is a removable fence against which the glass may be positioned instead of against the fixed fence. A holder for a glass cutter which is slidable along and then fixable to the pivotable glass cutter guide allows the system to be employed to cut arcs as well as straight lines. Optionally, the system may be employed with yet another accessory which allows the center of an arc being cut to be shifted to any selected location on the base of that system.

Abstract: A wood cutting machine having a first saw blade adapted to cut a horizontal groove in a wood member, a second saw blade adapted to cut a vertical groove in the wood member, motive means for moving the saw blades selectively into engagement with the wood member, and clamp means automatically operable before operation of the motive means for holding the wood member in place during a cutting operation.

Abstract: A manual stock stop is diclosed including a track assembly and a sliding stop assembly. A cable-activated electromechanical position transducer sends an electrical signal corresponding to the position of a stop bar mounted on the top assembly to a monitor/control unit which displays the position of the stop bar. A fine adjustment mechanism in the stop assembly allows for precise positioning of the stop bar. An automatic stock stop is also disclosed including a track and sliding carriage assembly. A motorized screw mechanism mounted on the track moves a carriage a limited distance along the track. The ends of flippers mounted on the carriage can be extended beyond an edge of the carriage to actually stop the stock. A guide and a device for performing a machine operation on the stock may also be mounted on the track. A computer control unit activates and coordinates the various functions of the stock stop.

Abstract: A combination simple and compound mitre gauge constitutes the subject matter of the present invention. The mitre gauge is intended to be utilized with power woodworking tools. The mitre gauge constitutes both a simple and compound gauge by utilizing an elongated member which slides in a groove on the supporting table and a support plate coupled with the member which is movable about a vertical axis and can be held in a given position by appropriate locking means. The support plate presents a vertical surface which mounts a guide that can be moved into one of two positions to vary the length of it. The guide may also be removed and a planar surface presenting shoe pivotally coupled with the support plate. The angle of the planar surface of the shoe may be varied and means is provided for locking the shoe in any given position.

Abstract: A programmable bed is provided for machine tools and the like, such as routers, boring tools, and other powered cutters and shapers. The programmable bed has a platen shaped to support differently sized workpieces thereon, and includes a plurality of retractable stops slidably mounted in the platen. The stops are selectively and individually shifted vertically between extended and retracted positions in response to the identification of a particular workpiece, so as to automatically locate or index the same on the platen at a preselected position relative to the machine tool. A plurality of pop-up suction chucks are also slidably mounted in the platen, and are selectively communicated with a source of vacuum. The suction chucks are reciprocated vertically between a retracted disengaged position, and an extended engaged position abutting an adjacent surface of the workpiece, so as to securely retain the workpiece in its preselected position during the machining operation.

Abstract: An adjustment apparatus which is capable of selectively securing to elongated members in a predetermined positional relationship includes a housing member having an eyebolt slidably positioned within a through aperture disposed longitudinally within a housing member; the eye portion of the eyebolt has a pivotal pin disposed therein affixing it to a T-bracket disposed proximate one end of the housing member. A sensing rod is disposed in a through aperture provided proximate the other end of the housing member which is permitted to flex. The eyebolt extending through the housing member is adapted to receive a threaded knob thereon and tightening the threaded knob simultaneously secures the housing member and sensing rod in a fixed position.

Abstract: A cutting apparatus for forming a V-sectioned groove in a workpiece includes a support surface, a pair of guide rails mounted in parallel relationship with one another and in relatively low relationship with the support surface and a platform mounted upon the guide rails for movement relative to and along the length of the rails. The apparatus further includes a cutter carried by the platform for movement therewith relative to and along the length of the guide rails and including a tipped rotatable cutting tool. The cutter is supported by the platform so that the rotational axis of the cutting tool is oriented generally perpendicular to the support surface and so that the tip thereof is placed relatively close to the support surface. The cutter is adapted to form a V-sectioned groove in a workpiece positioned upon the support surface as the cutting tool is rotated and moved in cutting engagement with the workpiece and as the cutter and platform are moved relative to and along the guide rails.

Abstract: A cam locked stud nailing fixture includes a fixture base formed of a base web with depending side plates and a pair of spaced apart abutment flanges upstanding from the base web and having ends defining an abutment surface. A cylindrical cam is eccentrically mounted on one of the side plates and has a cam lever attached for pivoting the cam member. The other side plate has a plurality of gripping spikes projecting inwardly. The fixture is clamped onto a main framing member, such as a sole plate of a frame, by pivoting the cam into compressive engagement with the main framing member which causes the gripping spikes to extend into the main framing member to prevent slippage of the fixture along the main framing member. A branch framing member, such as a stud board, is positioned with its end against the main framing member and with a face engaging the abutment surface formed by the abutment flanges of the fixture. The fixture forms an anvil to stabilize the position of the stud during nailing.

Abstract: A work-piece holder for use with work table mounted machine tools. The work table includes a work guide or guard which controls the depth of cut of the machine tool. The work holder includes an elongated frame and is provided with laterally operating jaw type clamps member for clamping the work-piece in fixed position on the frame with the work-piece in sliding contact with the table surface. One side of the frame provides a guide follower surface for contacting the work guide and the clamp member is recessed from the follower surface to permit removal of material from the work-piece when the frame is moved along the guide. For angle end cutting of work-pieces which extend beyond the follower surface, a guide arm is clamped to the frame at an angle to accomodate the end cut on the work-piece. The guide arm includes follower surfaces which are moved along the guide to bring the work-piece into cutting contact with the cutter.

Abstract: A ceramic substrate is held in position, while being processed, by vacuum. The substrate is positioned on an intermediate plate and held down by a vacuum. The intermediate plate is supported on an air bearing while being moved into correct location on a support member, after which the intermediate plate is held in position by a vacuum. The locating of the intermediate plate can be caused to move into position during movement of the support member to a processing position. Typical processing is the screen printing of circuits and other features.

Abstract: A stop device for woodworking machines, particularly planing machines, having a stop plate (20) on the machine table (10) and an auxiliary stop ledge (22) which is pivotally mounted on said plate and is swingable from an operating position resting on the machine table (10) into a ready position. In its ready position the auxiliary stop ledge (22) is inserted into a recess (32) within the stop plate (20).

Abstract: A jig for coping crown molding includes a base with a pair of right-angled isosceles triangular support blocks mounted on dowels to the base and with their faces that are at a 45.degree. incline to the base normally facing forward on the base. In one embodiment, the base has a rod which mounts one or more clamps. The clamps hold a length of crown molding with one of its flat rear surfaces resting on the base and with its inclined flat rear surface against the inclined faces of the support blocks. An end of the crown molding piece projects beyond the base where it is accessible for hand coping. The proper shape of the end of the crown molding for corner junctions can then be achieved using wholly vertical saw strokes. In another embodiment, the crown molding is held against the inclined surfaces of the support blocks by an abutment that is adjustably positioned on the base and spaced from the support blocks.

Abstract: A versatile knockdown fixture includes datum members each of which is provided with at least two intersecting grooves, which are located on the side of mating faces and form, after the mating faces have been joined, unified spaces. At the intersection of the grooves, there is provided an annular recess where there is a sleeve with radial holes in its side. A cylindrical key is secured by an indent made at one of its ends in each hole, which key fits the space with a guaranteed interference. Within the area of contact with the key, the groove has a trapezoid cross section and a depth greater than one half of the diameter of the key.

Abstract: A board positioner operationally cooperates with a radial arm saw with a workpiece fence to measure a board to be cut by the saw. The positioner comprises a support structure, a slide bar supported by the structure and a slide mounted on the slide bar. The slide is selectively rotatable with respect to the bar and infinitely positionable therealong. The slide includes a bridge which allows the slide to arc the fence when in operational position to assist an operator in cutting a board from a workpiece.

Abstract: The invention proposes a device designed for separating IC lead frames, boards, etc., piece by piece, and loading them continuously, and composed of a work stocker which holds laminated work of strips; a work-pressing mechanism which continuously presses the work within the work stocker; a separating mechanism which strips away the laminated work piece by piece from the lowest part thereof; and a pusher mechanism which pushes outside the stripped work from the work stocker; and wherein the separating mechanism is installed with a detector which finds out double sheets of the strips and stops operation of the pusher; and the separator is installed at its work exit end with a positioning pin of go-in-and-out of a taper shape which positions end points of the work pushed out by the pusher.

Abstract: The attachment includes a body which rests on the rip rail of the saw and which is guided slidably along the rail by two depending legs and by two pivoted arms. The leading end of one of the legs engages the trailing end of the board to push the board into and past the saw blade while the lower end of one of the arms presses the board downwardly against the table to prevent the board from flying upwardly. The hold-down arm is spring-biased into pressing engagement with the board and may swing upwardly and downwardly to accommodate boards of different thicknesses.

Abstract: A fence assembly for a tilting arbor table saw is provided in which a fence is detachably mounted on a fence carrier in either one of the two selected positions to present either a comparatively tall or a comparatively short work guiding surface and for use on either the left or the righthand side of the cutting blade. The fence carrier is mounted on an elongated guide that is attached to the saw table and which has front walls that define a slot running along the length thereof. A locking mechanism is provided on the fence carrier that includes a locking element located within the elongated guide that can be rotated between a position where it secures the fence carrier against movement and a position where the element can be removed through the slot in the front wall to dismount the fence and fence carrier from the elongated guide.

Abstract: A table, movably carried upon a stationary base, is provided with a fixed jaw and a movable jaw for gripping the lateral edges of a door or similar panel-like workpiece. The table is movable in reciprocal directions against adjustably positionable stops to place a longitudinal edge of the door at predetermined locations relative the cutting path of a router. The router is mounted upon a carriage which is horizontally and vertically movably supported upon a frame upstanding from the base.

Abstract: An adjustable fence for a saw table, or the like, comprises a main fence member defining a longitudinal direction and having a first clamping portion at one end. An auxiliary fence member is pivoted to the main fence member about an axis at right angles to that longitudinal direction and extends from the other end of the main fence member. The auxiliary fence member has a second clamping portion spaced longitudinally from the first clamping portion. A screw engages between the main and auxiliary fence members and is actuatable by one hand of an operator to adjustably pivot the auxiliary fence member relative to the main fence member to clamp the first and second clamping portions against opposite sides of the table. An extension fence may be slidably mounted over the main fence member and be adjustably secured in position by the same screw.

Abstract: An optical fiber chuck for use in an optical fiber splicer may be both accurate and inexpensive because the fiber moves through a stationary chuck rather than a moving chuck carrying the fiber. The fiber slides between precision V-grooves, and is advanced and retracted by frictional engagement with a drive wheel.

Abstract: A removable fence for a table saw is positioned on a saw table by a locking mechanism located on the fence which simultaneously grips a pair of blocks mounted on an endless flexible cable. The locking mechanism engages the blocks and raises them into frictional relation with an L-bracket mounted on the table thus preventing movement of the fence. The blocks are affixed to the cable at points equidistant from the plane of the saw blade thereby insuring parallelism of the fence relative to the plane of the saw blade. Utilizing the flexibility of the cable which permits lateral movement, the fence is removed by releasing the locking mechanism and moving the blocks laterally away from the mechanism.

Abstract: A punch press (20) having a worktable (40) for supporting a worksheet (21), a two axis positioning mechanism for positioning the worksheet under a punching head (34) and universal grippers (44, 46) supported on the worksheet positioning mechanism which can grip either the end or sides of a worksheet (21). The two axis positioning mechanism is formed from a carriage (42) which is movable along the worktable (40) and a cross slide (41) which is mounted from and movable across the carriage (42) to provide the two axis sheet positioning. The grippers (44, 46) are mounted from a T-slot (130) formed in the cross slide (41) and can be moved to different positions to accommodate various sheet sizes. Aligning pins (140, 142, 143, 144) which can be used for aligning worksheets are provided. Aligning pins (140, 142, 143, 144) during operation are retracted beneath the worktable (40).

Abstract: The invention comprises a device for supporting a piece of glass while cutting same by scoring and subsequently breaking it along the score line. The device includes a plurality of generally vertically oriented intersecting walls having upper and lower edges, the upper edges of the walls being coplanar so as to define a planar supporting surface for the glass piece and a generally horizontal base attached to the lower edge of each of the walls such that the walls and base form a plurality of upwardly opening pockets to catch and retain glass chips generated by the scoring and breaking process. A variety of stop devices both adjustable and non-adjustable may be inserted into the pockets to act as straight edges or stops for positioning the glass.

Abstract: A paper guide mechanism is slidably secured to the ruler of a paper cutter apparatus such that the paper guide mechanism can be rotated from a contact position with the cutting board without disconnecting it from the ruler.

Abstract: A machine tool table is disclosed having a lock accessible at the front of the table for applying pressure through a connection to a rear board so that a fence and at least one table spacer are held in position between the rear board and the front table. The lock may be adjusted at the front table to release the pressure so that the position of the fence may be changed.

Abstract: An overhead guide for a power saw provided with a vertically adjustable overhead fence guide which can engage the work product directly or a template affixed to the upper surface of the work product. The device clamps to a conventional power saw fence and can be rotated away from the work area to allow direct use of the conventional fence itself.

Abstract: A device for holding a work piece against a table while urging it against a guide fence when the work piece is being operated on by a table saw or the like having a pair of wheels rotatably mounted on a plate member supported on the end of first and second arms, the other ends of which are held by a frame member with a spring member extending from one upper arm to the opposite lower arm, the arms forming a parallelogram and being rotatably mounted to apply force to pressure the wheels against the table, the frame being at an angle to the guide fence so that the wheels are at an angle towards the fence in the direction of the movement of the work piece.

Abstract: A saw gauge for quickly and accurately measuring lengths of boards to be cut with a cross-cut saw is disclosed. The gauge includes a series of two or more bar segments having a flat base portion adapted for mounting on a cutting table in line with a guideway or fence also mounted thereon and a plurality of raised ribs of predetermined width projecting upwardly from the base portion and being spaced apart by channels of predetermined width. An elongated pivot pin extends the length of the segments behind all of the ribs in each segment except an end one of the ribs, which extends rearwardly behind the remaining ones of the ribs in each segment and contains a hole therein through which the pin projects for support.

Abstract: An assembly fixture for cross-shaped control rods of boiling-water nuclear reactors with an upper core grid mesh for holding a core cell formed of four fuel assemblies having a gap therebetween and means disposed beneath the reactor core for driving the control rods in the gap, including a frame having corners formed therein, the frame being substantially the size of a core cell and being disposable on the core grid, templates diagonally oppositely disposed on the frame and extending into the core cell for lateral guidance of the control rods, stops for the control rods disposed on the templates, and a carrying handle having a first portion thereof being pivotable at one of the corners of the frame and a second portion thereof being locked to an opposite corner of the frame in a disassembled condition and swung out of the locked condition in an assembled condition.

Abstract: An improved fixture (28) is provided for positioning components of an integrated circuit (10) during the manufacturing process. In particular, a boat (32) is provided for supporting the lead frame (18) and base (14) of an integrated circuit in a predetermined position for bonding and embedding of the lead frame to the base. A guide assembly (30) is employed with the boat (32) when positioning the lead frame and base. The lead frame is inverted and slid along a guide surface (46) into a notch (74) to abut a surface (76) of a stop pin (72). The opposite end of the lead frame abuts a second surface (80) on a stop bar (66). Diverging faces (68) on opposite sides of the guide surface center the lead frame relative to the boat and guide assembly. A base is then slid along the inside of the lead frame to abut against a second abutting surface (80) on the stop pin (72) to position the base and lead frame in a predetermined relationship.

Abstract: A laminated plate-like workpiece of the type wherein the outer layers extend laterally beyond the edge faces of a median layer is trimmed in an apparatus wherein a reciprocable carriage supports several elongated abutment members which can enter between the outer layers of a workpiece to move into contact with an edge face of the concealed median layer. The workpiece is thereupon coupled to the carriage by several pairs of jaws and the carriage is moved to one or more preselected positions in each of which a different portion of the workpiece is located in the cutting plane of a rotary circular saw.

Abstract: A rafter jig made up of an angular rafter bracket and a rafter support swingably connected to the rafter bracket and apparatus to adjust and lock the rafter support in angular position relative to the ridge pole bracket.

Abstract: A clamping apparatus is provided which is adapted to selectively secure two elongate members in a predetermined positional relationship. The apparatus includes a U-shaped clamping block, with an opening receiving a mounting post therethrough. A second opening extends through the arms of the clamping block, and a bolt-like clamping member is disposed through the second opening and has a knob threadedly positioned thereon. The head of the clamping member is slotted and includes a third opening receiving a stop rod therethrough. Also, cooperating frusto-conical surfaces are provided in the second opening of the clamping block and adjacent the head of the clamping member, whereby the tightening of the knob on the clamping member serves to concurrently clamp the post in the opening of the clamping block and the rod in the opening in the head of the clamping member.

Abstract: A sawbuck has a base in support of a log holder having transverse, horizontal receivers of different sizes which establish a size range such that the end of a log or split section thereof within a substantial range of cross sectional dimensions may be entered in and held by the appropriate one of the receivers as a cantilever and then cut into wanted lengths.

Abstract: A process and apparatus for producing sections of accurate weight or volume which includes the providing of a computer which receives various signals including the length, weight and density of a sheared off section and in response to such conditions varies the position of a length stop to insure that sections of accurate weight and volume are continuously obtained. The length stop mechanism is regulated by controlling the movement of a plurality of clamping devices which operate in conjunction with the axial movement of the material to be severed. The clamping devices are hydraulically operated.

Abstract: Apparatus for holding hollow wall panels while they are filled with foamed plastic having a base, a lower platen, an upper platen, and a plurality of inflatable hoses. The base has a top pressure surface upon which the inflatable hoses are positioned. As fluid under pressure is released into the inflatable hoses, the upper surface of the hoses contact the bottom pressure surface of the lower platen to lift the lower platen upwardly. The hollow wall panels are supported by a plurality of longitudinally spaced roller support brackets that extend downwardly from the opposite sides of the upper platen. As the inflatable hoses are pressurized, the upward travel of the lower platen will cause its top pressure surface to contact the bottom of the hollow wall panels and hold them in rigid engagement against the bottom pressure surface of the upper platen. When the hollow wall panel is thus positioned, it is filled with foamed plastic.

Abstract: A longitudinally extending support is secured to the table of a table saw to which a guide rail is secured. A saw fence, having a shoe secured thereto, includes a clamping arm extending therefrom. The shoe slidably engages the guide rail and may be clamped together with the fence to the guide rail. A scale is formed on the guide rail and an index is attached to the shoe and positioned to register with the scale.

Abstract: A precision workpiece positioner in the form of a rectangular parallelepiped has divided extensions projecting beyond one surface thereof for entry into the mouth of a locator slot in a machine tool table. Tapered expanders spread the divided extensions into positive engagement with the mouth of the slot. A screw engaged with the workpiece positioner draws a T-nut into tight locking engagement with the table which has a T-cross section. The positioner may be used in association with a workpiece clamp or plural positioners engaged in parallel table slots can align longer workpieces for machining.

Abstract: A method and apparatus for assembling a fluid conducting tubular member into secure engagement with a channel integral with an elongated solar heat absorbing plate. The apparatus includes an elongated inflatable tube secured to an upstanding wall fastened to a table top. A fixture having a shallow V-shaped concave face is mounted on said table top with the concave face adjacent and parallel to said tube. An elongated plate having a channel parallel with the longer plate edges is positioned between the tube and the fixture with the channel opening toward the fixture. When the tube is inflated, it presses the plate toward the concave fixture surface. Plate edges contact and are restrained by the fixture edges, while the center of the plate is free to move further toward the fixture, flexing the plate in a manner increasing the diameter of the channel. A tubular member having an outside diameter equal to or greater than the unflexed channel diameter is inserted into the channel.

Abstract: A miter table for portable circular saws in which an arm movable in a vertical plane is pivoted on a horizontally disposed base, and a fence is pivotally mounted on the base and movable to various angular positions for holding material to be cut. A carriage is mounted on the arm and is movable forwardly and rearwardly thereon, supporting a saw for performing the cutting operation as the saw moves from the forward to the rearward carriage positions. A platform is attached to the fence and pivots therewith and is provided with an arcuate forward edge with a scale thereon for assisting in adjusting the fence to various angular positions.