Abstract: A welding machine for butt welding of plastic profiles is outfitted with profile clamping units (2, 3) capable of sliding in relation to each other, and a heat reflector (15) which can be introduced between the front surfaces of two profiles to be welded, whereby the clamping units (2, 3) comprise weld boundary blades (2b, 2f, 3b, 3f) aligned parallel to the profile front surfaces and mounted on the profiles.In order to enhance welding efficiency and produce precisely coordinated weld joints, the clamping units (2, 3) are designed to accommodate two superimposed profiles (U, O), and feature in addition to the external boundary blades (2b, 2f, 3b, 3f) an intermediate boundary blade (5, 6) insertable between the profiles (U, O), yielding elastically in the clamping direction of the profiles and moving along with the clamping units (2, 3) in the direction of displacement.

Abstract: A device for moving a wall frame unit into an erect and plumb position includes a pulling unit mounted on one wall frame unit and a pulled unit mounted on the wall frame unit to be erected. A cable unit connects the pulled unit to the puller unit via a lock handle on the puller unit. Movement of the puller unit handle into a prone position draws the cable unit towards the puller unit. A differential pulley block is included so that one worker can, without assistance, move the second wall frame unit.

Abstract: A woodworking corner clamp assembly having two screw clamp assemblies, each clamp assembly being oriented perpendicular to one leg of an L-shaped frame. Each clamp is also capable of longitudinal sliding movement along one leg of the L-shaped frame. The longitudinal position of each clamp along the respective leg of the L-shaped frame is controlled by the rotation of a threaded rod which passes through a longitudinal slot located in the leg of the frame and through a portion of the base of the clamp member, such that rotation of the threaded rod causes the clamp to be driven longitudinally along the length of the frame.

Abstract: An apparatus for simultaneously welding two or more pairs of thermoplastic frame elements is disclosed. The apparatus includes a clamp or jig assembly which maintains the frame elements in alignment with respect to each other and to a heating plate. A driving assembly is provided for moving the frame elements towards the heating plate and/or towards each other for heating and fusion.

Abstract: A vise for joining frame pieces has clamp assemblies which can be moved on perpendicular axes, and has a quick-acting shifting mechanism for displacing one of the clamp assemblies from an initial position and returning it thereto. The complementary end faces of mounted frame pieces can thereby be brought into precise abutted registry with one another to establish a corner joint, moved apart by use of the shifting mechanism to permit the application of a fast-setting adhesive to the mating surfaces, and thereafter returned by reverse action of the mechanism to secure them in precisely the same relationship as was initially established.

Abstract: A clamp for holding elongated workpieces in angular abutment with each other includes a base, a first pair of clamping jaws formed by two sides of an angular member, the sides defining between them an angle and an angular sector, a guide on the base for guiding displacement of the angular member on the base along a line bisecting the angle, a lock for locking the angular member on the base, a clamping member displaceable relative to the base along a line parallel to the line bisecting the angle, a pair of first and second levers pivotally coupled to each other at one end of each lever, the first lever being pivotally coupled to the base at an end opposite the second lever and the end of the second lever opposite the first lever being pivotally coupled to the clamping member, and a second pair of clamping jaws, each pivotally connected to one of the pair of first and second levers.

Abstract: A tool for facilitating the height and depth placement of electrical outlet and junction boxes during rough construction comprises an elongated extruded support member having a rectangular or square cross-section and approximately five feet long. The rear surface is a plane for placement against the front surface of a stud on which electrical outlet boxes are to be placed. The front surface has a slot in it and box locator devices are slideably attached in the slot, so that the vertical height of electrical boxes to be attached to the stud is established by an initial adjustment of the box locator devices. Each box locator device further includes a box spacer extending on the sides of the support member ot establish the depth to which the box is located on the stud; and a spring is used to releasably hold the box in place against the spacer.

Abstract: A knock-down type workbench including a three piece support structure assembly which may be assembled in rigid form entirely without the use of nails, screws or other fastening means. The knock-down workbench includes a plurality of table tops which have different functions and are interchangeable. The panels of the workbench are interlockingly stressed to create a structurally tight workbench held together by forces created by the interlocking parts. Thus, the workbench may be lifted or severely jolted without fear of it collapsing.

Abstract: An apparatus for temporarily suspending or supporting a fasica board during the installation thereof, along the eaves or the gable end of a frame of a roof is described, wherein the device includes a U-shaped frame for supporting or suspending the fascia board. The U-shaped frame is engagedly cooperating with a rectangular shaped frame for attachment to either a rafter or an outrigger, respectively, of the frame of the roof. The apparatus provides an improved method of installing a fascia board, wherein one person, can install the fascia board and upon completion installation thereof, the apparatus may be easily removed and applied to another section of the roof.

Abstract: A multi-element clamp is used in association with a frame corner welding apparatus. The clamp or jig consists of a base element, a floating element and a clamp element. The floating element is bias coupled to the base element and when driven to clamp position serves as a clamp, with respect to the base element and is converted to a base element with respect to the clamp element.

Abstract: An apparatus and method for assembling elongate box units are disclosed. The apparatus includes plural, elongate clamping elements which are constructed to define a corner configuration for adjacent side pieces of a box unit. Plural, elongate tensioning rods typically extend through the clamping elements in an array with the rods extending perpendicular to the elongate length of the box unit. The method of the invention teaches the use of the apparatus for forming the elongate box units.

Abstract: A fixture for holding workpieces at predetermined angles while they are being interconnected includes a pair of legs and a hypotenuse forming a right triangle, whose three vertices are truncated to enable the fixture to function as a jig, as a template, or as a bending tool. Workpieces may easily be attached to the fixture, obviating the need for special clamps.

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: The guide comprises a pair of elongated matching bars with nail or screw bores through the mating surfaces thereof. The two bars are normally maintained slightly apart to lift over the heads of nails by compression springs and include rotating cam clamps which can close the strips together against the spring pressure. One embodiment includes end clamps for engaging the opposing edges of a board and the edge of a further board to be nailed at right angles thereto so that the nail positions are correctly located. Lengthwise and width adjustments may be provided in the guide. Another embodiment permits the guide to be slipped under nail heads that have been started in order to support the nail as it is further engaged by the hammer or out from under nail heads having been both started and initially driven. The device may have guide drillings both perpendicular and at an inclined angle to the surface upon which it is engaged.

Abstract: A device for retaining a compression member in compression against a wall covering during installation where adhesive is used. The device can be used in interior or exterior applications with all types of wall coverings such as plasterboard or wallboard, vinyl-covered wallboard, layered or laminated wallboard, paneling, Sheetrock, veneers, or any type building product installed to wall framework or an existing wall surface. The device includes a base adapted to be securable to a fixed surface, an alignment means secured to the base for aligning the compression member against the wall covering, and a retaining means secured to the base for retaining the compression member in compression against the wall covering.

Abstract: A jig for constructing pipe support brackets is disclosed, the brackets having a shank portion, an anchoring portion, and a pipe holding portion. The jig has a base member which receives the shank portion and first and second templates which receive the anchoring portions and pipe holding portions respectively, while they are being secured to the shank. The templates may be axially adjustable and pivotally mounted for constructing brackets of different sizes and for facilitating removal of the finished bracket from the jig.

Abstract: The welding clamp is used to hold a first metal structure against a second metal structure for welding both structures together. A mounting bracket means having longitudinal rod means extending therefrom is temporarily tack welded to the first structure to support the welding clamp. In another embodiment, the welding clamp utilizes a mounting bracket means having a pair of L-shaped arms extending therefrom. The arms grip a pair of C-shaped channel members which are temporarily mounted by tack welds to one of the structures to be welded. In another embodiment, the welding clamps can be modified into a welding fixture particularly well suited for welding end brackets or other similar structures to tubular members.

Abstract: A grid assembly fixture for use in assembling grid straps to form a grid comprises a generally flat plate having first and second sets of parallel grooves, with the grooves of the sets at right angles. A retention strap comprises first and second pairs of bars, the bars of each pair hinged together adjacent their ends, and releasable joining elements for joining the pair of bars.A method of assembling the grid straps includes positioning a first set of straps in a grid assembly fixture, positioning a second set of straps at right angles to the first set to form a grid, placing outer straps on the grid, and placing a retention strap on the outer straps.

Abstract: An improved retention strap for maintaining a fuel assembly grid in an assembled condition during manufacture in a grid assembly fixture includes four members extendible along the respective outer grid straps, between the corners and about the periphery of the grid. Each member has a pair of end posts and a cross member extending between and connected with the end posts. The end posts of the members are disposed adjacent the respective corners of the grid when the grid is in the assembled condition. Pairs of brackets interconnect respective ones of the end posts of the members, whereas pairs of releasable connectors fasten respective others of the end posts of the members so as to form diagonally opposite pairs of substantially rigidly squared first fixed and second openable corners. Also, the retention strap includes a pair of clamps disposed at each of the fixed and openable corners formed by the end posts.

Abstract: A clamping device is provided with holding means on each of a first and second jaw means for positioning at least two workpieces of different thicknesses together in any desired abutting angular relationship and means for applying a force to the jaw means so that the holding means will hold the workpieces of different thicknesses in the abutting angular relationship.

Abstract: A portable miter guide device for chain and hand saws having a holding assembly (12) including a cradle member (18) and coacting clamps (36,38) for attaching the device to a work piece (W). The device includes a support arm (32) to which is attached an adjustment arm (14) for limited angular movement in a plane parallel to the work piece. Adjustably attached to the outer end of the adjustment arm (14) at an upstanding right angle is a saw guide member (16) with guide slot (80, 88, 90) for guiding chain and hand saws. The device can be attached to large wooden work pieces, the angle of cut chosen and a chain or hand saw (C, H) used to obtain an accurate square or compound cut in the work piece (W). In a second embodiment of the invention the adjustment arm (130) is fixed rather than being pivotal has a disc member (132) with support brackets (136,138) for pivotally supporting guide member (16).

Abstract: Welding jig apparatus for holding bar stock workpieces in an intersecting and aligned relationship to form a metal grating structure includes a number of elongated radial cams located in a spaced apart relationship to each other and in two parallel rows on a work surface. Workpieces are located between adjacent cam faces of cams opposite one another in the two rows when the cams are in a nonclamping position. The workpieces are clamped into the desired position by arcuate cam surfaces when the cams are rotated to clamping position. The work surface is tiltable to one of a number of work positions to facilitate the welding of intersecting workpieces into the grating structure.

Abstract: An angle clamping tool is provided having a handle including a lockable clamping mechanism operably connected to two jaw arms. Each jaw arm includes an end portion and a medial portion. Secured to the end portion of each jaw arm is a clamping jaw comprising a pair of two elongate clamp members. The clamp members are adjustable to form a selected angular relationship with respect to each other, depending on the types of materials being secured together and the uses for such materials. Once a selected angle is obtained, means are provided for locking the clamp members in such angle during use. The jaw arms in the invention are designed so that, when the handle portion is gripped, the clamping jaws move inwardly toward each other so as to meet and engage work pieces therebetween. The jaw arms are further designed so that when the clamping jaws meet, the medial portions of the jaw arms are sufficiently spaced from each other to permit passage of the clamped work pieces therebetween.

Abstract: An adjustable, low cost fixture for the production of stair stringer weldments of the type including a channel beam or the like and a plurality of carrier angle elements welded thereto for the support and positioning of tread and riser elements in the completed stair. The fixture includes an elongated reference beam, and means to clamp the reference beam to a flange of the channel member at an adjustable level from the edge of the channel. A plurality of carrier angle nesting blocks are individually clamped to the reference beam at spaced points along its length and in a predetermined angular orientation relative thereto. The nesting blocks are provided with notched out portions for receiving and positioning the carrier angle elements during welding thereof to the channel beam.

Abstract: A tool for positioning a pair of objects with respect to each other is realized that comprises a toggle assembly attached to one end of a threaded shaft. The toggle assembly includes a pair of arm members pivotally attached about the shaft which are normally held in an open position wherein the arm members are jointed together end to end. A collapsing assembly is provided that is connected with the toggle assembly and disposed about the threaded shaft for causing the arm members to be collapsed about the threaded shaft, into a closed position. In this manner, the tool can be either inserted or removed from a hollow cylindrical object when the tool is closed into another hollow object. After insertion the first object is held securely to the second by allowing the toggle assembly to open prevention removal of the tool. Thereafter, the tool can be removed from both objects by collapsing the toggle assembly.

Abstract: A device supports a weldolet on a pipe with a passage through the weldolet in aligned relationship with an opening in the pipe in order that the weldolet and pipe may be joined by welding or the like. The device is adjustable to accommodate weldolets and pipes of various different sizes.

Abstract: A dovetail fixture for clamping and holding two workpieces and for guiding a cutting tool whereby mortises are cut in one workpiece and tenons are concurrently cut in the other workpiece. The fixture includes a guide template having a plurality of spaced apart fingers formed along at least one edge of the template and defining blind-ended spaces between its adjacent fingers. As the cutting tool is moved along the edge of the template having the fingers, mortises are cut in one workpiece and tenons are cut in the other workpiece.

Abstract: A fastener for temporarily holding a SIP in place as it is soldered into a printed circuit board comprises a planar piece of unsolderable material having a body with a slot which is adapted to slip over and hold the SIP; the planar piece of material also has a leg which extends from the body; and the leg has an end section which is parallel to the slot and is adapted to press fit into an unplated anchor hole that goes perpendicular through the board to orient the slot and SIP perpendicular to the board.

Abstract: The invention relates to a method and a jig for constructing a carcase-type article of furniture. A panel which is to form a part (e.g. a door) of the finished article, is placed down on a horizontal surface. A jig is assembled around the panel using the panel as a template, the jig incorporating abutment blocks to contact the edges of the panel and locating blocks in predetermined positions relative to the abutment blocks to define the positions of the carcase walls and to locate the walls in position while being secured to one another. The carcase walls are cut to the desired size, and placed edge down within the locating blocks of the jig. Securing the walls to one another now forms a carcase the walls of which are correctly aligned with the edges of the panel.

Abstract: A clamping device comprises an angle member carrying a clamping mechanism and a clamping band which is engaged by the clamping mechanism at one end and engages around and holds the workpieces to be joined firmly in contact with each other, and is attached, by its other end, to an anchor. The anchor may be provided on the angle member or on a tensioning angle member. To tension the band, the clamping mechanism is mounted on a slide 3 which is displaceable by a pulling means operating thereon and which comprises a screw and a nut.

Abstract: An apparatus for clamping a plastic fitting against a plastic pipe and for holding them together with a predetermined clamping force includes a carriage and guide rods for guiding the carriage in vertical motion above a fixed pipe support. A frame is fixed with respect to the pipe support, and first and second toggle links are pivoted to the carriage, to the frame and to each other in such a way that the links can achieve an aligned position in which the carriage is in its lowermost location. Mechanical interference is provided to prevent the toggle links from going significantly past the dead center position represented by the alignment. A receptacle is resiliently supported below the carriage for holding the plastic fitting, and a lever is provided for rotating one of the toggle links. The connection of the toggle links to the frame is vertically adjustable with respect to the frame, in order to adjust the degree of downward force placed on the plastic fitting.

Abstract: A welding fixture for a nuclear fuel assembly grid having rigid top and bottom members and having apparatus for releasably securing them together. The bottom and top members each have an egg-crate configuration of interleaved fixture straps. Top notches on the bottom fixture straps' top edges are placed to engage the grid straps' bottom edges when the grid straps are aligned for welding. Likewise, bottom notches on the top fixture straps' bottom edges are placed to engage the grid straps' top edges when the grid straps are aligned for welding.

Abstract: A novel and improved fillet welding equipment is disclosed which comprises a movable member adapted to be movable longitudinally of the welding equipment, a threaded shaft inclined forwardly and mounted to the movable member, a welding torch threadedly connected with the threaded shaft to be movable upwardly or downwardly in a direction of inclination of said threaded shaft, and a jig positioned in front of the welding torch to carry members to be welded and adapted to be rotatable longitudinally of the welding equipment, whereby the whole periphery of the pipe member to be welded can be completely welded by a single welding torch.

Abstract: A fixture and method for manufacturing corner joints wherein two workpieces having mitered edges are joined to form a corner axis. The workpieces are clamped underneath a table having a plurality of parallel finger slots so that the corner axis is perpendicular to the lengthwise axis of the linger joints. A router is guided through the finger slots to cut aligned slots in mitered edges of the workpieces. A spline is received in the slots to lock the workpieces together.

Abstract: A machine for use in the fusion fitting of a branch, T- or saddle junction to a pipe, comprises a first clamp for holding pipe and a second clamp for holding the fitting in the correct orientation to the pipe. A manually-operated sliding plunger arrangement allows the second clamp to be moved towards or away from the first clamp by way of a manually operated device. The second clamp can be locked against retraction from any one of a plurality of positions relative to the first clamp, and is adapted to be loaded towards the first clamp in its locked positions during the fusion process when a fitting engages a pipe or a heating tool is held between a pipe and fitting. The shaft which controls the movement of the second clamp has a pivoting extension or plunger terminated by a handle, which can be folded upward. Pins mounted at selected intervals on the plunger cooperate with a loading plate during the downward movement of the plunger to urge the second clamp either toward or away from the first clamp.

Abstract: A jig for manufacturing wooden fencing or shed panels is adaptable to a range of sizes. A horizontal rectangular main frame (4) provides location for all the peripheral battens of a maximum size panel and for some of the peripheral battens of lesser panels. Spanning the frame is an array of parallel beams (12) which can be adjusted transversely to their longitudinal direction. These beams carry locating elements (14) which can be adjusted longitudinally of their respective beams. Intermediate panel battens, and peripheral ones for reduced size panels, can be laid along the beams or transversely to them, in each case being held laterally by the locating elements, and at a height compatible with that of any batten resting on the main frame. Corner and T-junctions of battens can be made at any locating element, with access for nailing them together, and the main frame also provides nailing access for such junctions.

Abstract: A portable pipe fusion apparatus for attaching plastic side wall fittings e.g. tees, branch saddles to a plastic pipe of selected composition. This apparatus comprises a base plate with means to rigidly clamp the base plate to a pipe main. Two parallel, spaced support rods attached to the base plate at one end, and to a support plate across the other two ends. Movable clamp means guided to slide along the support rods with the axis of movement intersecting the axis of the pipe main. The movable clamp means is adapted to be attached to and hold various of the side wall fittings rigidly, so that the axes of the fittings intersect the axis of the main pipe. Drive screw means held in a quick release split nut means on the support plate, will force the movable clamp in the direction to contact the transverse pipe main. A hydraulic load cell is interposed between the drive screw and the movable clamp with an indicator which continually reads the force being applied between the moving clamp and the pipe main.

Abstract: A grid assembly fixture for use in assembling grid straps to form a grid comprises a generally flat plate having first and second sets of parallel grooves, with the grooves of the sets at right angles. A retention strap comprises first and second pairs of bars, the bars of each pair hinged together adjacent their ends, and releasable joining elements for joining the pair of bars.

Abstract: An alignment level tool aligns and holds metal plate edges in alignment for welding. The tool includes an L-shaped member and a series of work adaptor members. One arm of the L-shaped member has working screw threaded therein and the other arm has a mounting plate. The adaptor members include an L-shaped adaptor bracket, and a special V-shaped adaptor bracket. The L-shaped bracket has a short leg and a relatively long leg with each leg having an opening for bolting to the mounting plate of the L-shaped member. The bracket legs provide a two point support on a curved work plate or an offset planar support for an angulated plate. The adaptor bracket is temporarily welded to one work plate. The screw is aligned with the second work plate and is actuated to positively force the work plates into alignment for welding. The tool is then removed by bending with respect to the bracket weld to break the weld.

Abstract: A secure safety anchor that is easy to utilize is provided for attachment to structural angle irons in marine installations and the like. The anchor includes a vise grips with movable and stationary jaws, and a head welded to the stationary jaw. A flange surface portion of the head extends substantially perpendicular to an imaginary line between the vise grips jaws when in the clamping position, and a number of force concentrating set screws pass through the flange surface at an angle of about 15 degrees with respect to the imaginary line. A through-extending opening in the head provides for attachment of a safety belt clasp.

Abstract: An apparatus for holding an object, such as a furnace or kiln block, in a predetermined position relative to an external metal member, such as the metallic shell of a furnace or kiln. The apparatus includes a foot assembly which is adjustably supported on a rod member, which is in turn supported by a lower side of a magnet. The upper side of the magnet is removably magnetically affixed to the metallic shell so as to secure the apparatus thereto, thus enabling the foot assembly to hold the object against the metallic shell.

Abstract: A rugged sturdy workpiece positioning mechanism that effectively and efficiently positions and holds at least two workpieces for further operations is provided. The mechanism includes a main support which is slidably connected to a first workpiece and a housing assembly which is affixed to the main support and extends above and engages the second workpiece. The housing assembly includes two side plates, a cam with a handle rotatably attached to the sideplates, a ratchet to lock the cam into a fixed position and a load bearing surface actuated by the cam and slidably received between the side plates. The edge of the cam abuts the load bearing member. When the cam is rotated in a predetermined direction, the distance between its axis of rotation and the load bearing member increases driving the load bearing member downward. The load bearing surface engages the workpiece and forces the second workpiece into a desired position relative to the first workpiece.

Abstract: In the manufacture of a cable-type tire chain having elongate flexible side members and cross-members carrying traction sleeves, the cross-members are connected to the side members by hooks which are crimped to the side members in a press. To assemble the cross members and side members, they are supported in an assembly jig, with the hooks attached to the opposite ends of the cross-members and embracing the side members. The hooks on one side of the chain are crimped simultaneously to the relevant side member in a single pressing operation while supported in the jig, which applies tension to the side member.

Abstract: An apparatus for clamping a plastic fitting against a plastic pipe and for holding them together with a predetermined clamping force includes a carriage and guide means for guiding the carriage in vertical motion above a fixed pipe support portion. A frame portion is fixed with respect to the pipe support portion, and first and second toggle links are pivoted to the carriage, to the frame portion and to each other in such a way that the links can achieve an aligned position in which the carriage is in its lowermost location. A mechanical interference means is provided to prevent the toggle links from going significantly past the dead center position represented by the alignment. Means are connected to the carriage for holding the plastic fitting, and lever means are provided for rotating one of the toggle links.

Abstract: A mitre box has an integrally formed synthetic resin support member which includes a platform portion, a corner post with right angularly disposed faces, a pair of clamp posts spaced from the corner post and a saw guide post disposed between the clamp posts. The corner post has a transverse channel bisecting the 90.degree. angle defined by its vertical faces, and the saw guide post has a channel aligned therewith so that a saw blade may be guided when seated in these two cooperating channels to effect a 45.degree. cut in a workpiece abutting one of the vertical faces of the corner post. Clamp assemblies are adjustably mounted in the clamp posts and include elongated members which are adjustably moveable therein relative to the cooperating vertical faces of the corner posts.

Abstract: In the manufacture of a cable-type tire chain having elongate flexible side members and cross-members carrying traction sleeves, the cross-members are connected to the side members by hooks which are crimped to the side members in a press. To assemble the cross members and side members, they are supported in an assembly jig, with the hooks attached to the opposite ends of the cross-members and embracing the side members. The hooks on one side of the chain are crimped simultaneously to the relevant side member in a single pressing operation while supported in the jig, which applies tension to the side member.

Abstract: Method and apparatus for aligning one end of an optical fiber in the emitting well of an LED employs an elongated rod having a flat milled halfway through the mid-section thereof for forming a recess and first and second channels extending between the recess and an associated end of the rod to the depth of the recess. The two channels are located in front of the bottom of the recess and are oriented at 90.degree. with respect to each other in an end view. The channels also overlap along the center line of the rod and are dimensioned for loosely-releasably receiving and supporting a length of fiber in a straight line while the one end thereof is aligned with the emitting surface of the LED.

Abstract: A clamping device has a first and a second clamp for holding several workpieces together in a predetermined configuration and guides for allowing fasteners to be accurately positioned for holding the workpieces together once the clamping device is removed from the workpieces. The clamping device includes a body and the first clamp includes first and second arms and a device which selectively and positionably mounting the arms relative to the body and the second clamp includes a member and a device for mounting the member relative to the body and for selectively positioning the member relative to the first and second arms. Further the guides means includes first and second guides secured to the first and second arms.

Abstract: A device for the establishment of the proper location for the footings of a structure and a device for the proper placement of mounting bolts within a footing. The device is adjustable and can be set to varying heights to insure that all footings for the structure are of equal height, thereby providing a level foundation for the structure.

Abstract: A mitre box includes a base member upon which is detachably secured a corner clamp providing a pair of movable jaw members movable at right angles to each other and relative to cooperating fixed clamp faces on opposite sides of a guide channel therein. The base member has a work support surface which is aligned with the guide channel and coplanar with the support surfaces of the corner clamp. Cooperating locating means are provided on the base member and corner clamp to position the members in predetermined alignment, and releasable fastening means secure the two members in assembly. Also included are a pair of guide posts upon which is slidably carried saw guide means to position an associated saw in alignment with the guide channel in the corner clamp.