Abstract: Systems and methods for constructing staircases are described herein. The systems include a stringer hanger bracket for coupling a stair stringer of the staircase to an upper floor, two or more tread support structures and a jig. Each tread support structure is configured to couple a tread to the stair stringer. The jig is configured to determine a mounting position of each of the tread support structures on the stair stringer, determine a mounting position of each of the tread support structures on the stair stringer and/or determine a length of the stair stringer.

Abstract: This is a measuring tool for use in the installation of metal roofing when such metal roofing must be cut in order to fit along valleys in the roof structure. Valleys are places where the roof surface changes direction, such as where the roof of a gable joins the main body of the roof. The tool measures the point at which the metal roofing panel is to be cut by sliding the base of the tool down the last rib of the last installed panel until the tip of the pointer arm touches the chalk like along which the next panel must fit. The distance from the top of said last panel to the bottom of the base of the tool corresponds to the distance from the top of the new panel to the point at which its leading edge should be cut to fit along the chalk line.

Abstract: Devices, kits and methods for determining the site of intramuscular injection in adult and child patients are disclosed. The device includes a top element and two legs that are configured to be fastened in a first position and a second position. When placed in the first position and second position, the device forms a substantially triangular region having a center that corresponds to the site of injection.

Abstract: The subject invention comprises a system, and method of using the system, for providing improved alignment in multiple settings. Appropriate settings include woodworking, machining, and sports, although there are several other practical applications for this technology. The invention employs one or more alignment stations that have a base plate that anchors into a flat surface, guides that fit into the base plate, a top rotating element that fits onto the base plate secures the first set of guides into place, and a positional lock that locks the rotating element into place relative to the base plate.

Abstract: An angle measuring gauge incorporates four arms pivotally connected to form a quadrilateral. The arms are connected to a guide bar that attaches to the quadrilateral along a diagonal and forms an axis of symmetry. A first corner of the quadrilateral is pivotally attached to the guide bar and the opposite corner of the quadrilateral is pivotally connected and is slidable along the guide bar to adjust the angles of the quadrilateral. In practice, the first corner of the quadrilateral is adjusted to conform to a desired angle, and the guide bar bisects the angle formed by the first corner and can be used to either ride in a miter slot of a cutting tool, or adjust a miter gauge of a cutting tool to cut accurate miters.

Abstract: A saw guide device for the rapid and precise cutting of perpendicular notches in framing lumber using a portable circular saw. The device consists of an edge-of-board follower rail, a support arm, and a pivotally adjustable saw fence. Externally affixed to the saw fence are a horizontal cut locator arm and a saw stop tab. The locator arm has a cut alignment tang and a saw blade recess slot. The saw stop tab has a thumbscrew adjuster. The device is positioned by the alignment tang, which drops into a previous cut. During operation the saw foot overruns the cut locator arm and is stopped by the tab. Thumbscrew adjusters are located at each end of the follower rail to allow for variation in depth of the perpendicular notch. Various angular scales are marked on the upper surface of the follower rail to aid in saw fence setup.

Abstract: A guiding instrument for forming a cut in a work piece with a cutting tool includes a base member, a guide member, and an elongated linking member. The base member has an aligning wall and a platform. The aligning wall is configured for alignment with an edge of the work piece. The platform extends outwardly from the aligning wall. The guide member is pivotally coupled to the base member. The elongated linking member extends between the base member and the guide member. The first end of the elongated linking member is coupled to the base member and the second end of the elongated linking member is releasably coupled to at least one of base member and the guide member.

Abstract: An adjustable construction square is provided that comprising an elongated blade member and an elongated cross member. An end of the cross member has a contour, and an end of the blade member has a contour. The adjustable construction square includes a clamping jig that enables the construction square to be quickly secured into a desired angular position. The clamping jig includes a clamping device, a wedge device, and an arm that work in combination to secure the adjustable construction square in a desired position.

Abstract: An adjustable construction square is provided that comprising an elongated blade and an elongated cross member coupled to the blade. The elongated blade has a longitudinal axis and linear measurement indicia on one of its surfaces. The elongated cross member also has a longitudinal axis, and has top and bottom surfaces with measurement indicia on its top surface. An end of the blade member is coupled to an end of the cross member. The end of the blade member that is coupled to an end of the cross member has a contour, and the end of the cross member that is coupled to the blade member has a contour. This arrangement and contoured ends allow accurate measurements in certain construction applications. The adjustable construction square includes a clamping jig that enables the construction square to be quickly secured into a desired angular position. The clamping jig includes a clamping device, a wedge device, and an arm that work in combination to secure the adjustable construction square in a desired position.

Abstract: A device for preparing to mount a wall fixture includes a main base having opposed first and second ends and a first auxiliary base having a substantially similar configuration. The first auxiliary base is coupled to the main base and movable between a closed configuration in which the first auxiliary base is positioned substantially atop the main base and an open configuration in which the first auxiliary base is linearly adjacent the main base. The main base and first auxiliary base each define a slot extending longitudinally between respective first and second ends. Each base includes a marking member situated in a respective base slot and slidably movable therealong. Each base includes a respective locking assembly for securing a respective marking member at a desired position along a respective slot. Each marking member includes a pointed distal end for making a starter hole when depressed against a wall surface.

Abstract: A device for measuring angles between surfaces of a physical object includes a linkage having two or more gauging arms and a metered arm. The metered arm is coupled to one arm of the linkage. The metered arm indicates an angle between two or more surfaces of the physical object. The angle measurement device may allow measurement of both interior and exterior angles, and acute, obtuse, and right angles.

Abstract: A combination measuring tool includes a main body having a first portion having a plurality of first graduations and a second portion having a plurality of second graduations, a transverse bar movably and rotatably mounted on the main body and having a semi-circular protrusion having a plurality of angle scales, a protractor secured to the transverse bar and having a plurality of angle scales, a pivot plate pivotally mounted on the protractor, and a ruler movably mounted on the main body and having a plurality of graduations. Thus, the measuring and drawing angle of the combination measuring tool can be adjusted easily and freely, thereby facilitating a user operating the combination measuring tool to draw marking lines.

Abstract: An improved adjustable carpenters square is presented, which aids carpenters in marking and measuring work product to be cut or formed. The adjustable square can be set at a variety of angles to enable cut marking. It also possesses an attached measuring tape and a straight edge to combine three useful features in one tool, as well as a press-down tape stop to hold the tape in place. This invention can be used to scribe a line along a piece of material using the leading edge of the square as a guide instead of using the index finger of one hand, which often results in injury due to slivers from the material being scribed.

Abstract: A tool may be easily used to determine the size and shape of an opening and transfer these dimensions to a piece of material which is to be cut to fill the opening. The tool is particularly suited to fitting tile around walls, doors, and the like and for then marking the tile for cutting. The tool allows for quick and accurate marking of the tile or other material in order to then cut the material.

Abstract: A tool for holding a framing square has a body with a pair of spaced longitudinal slots accommodating the flat legs of the framing square. Clamping devices mounted on the body clamp the body on the legs of the framing square to fix the position of the framing square on the body.

Abstract: A drywall square having a straight long arm of at least forty-eight inches. The long arm has a first end and a second end, wherein the long arm is segmented into a plurality of sections between those ends. A straight short arm intersects the long arm. A first hinged joint connects the first end of the long arm to the short arm. The first hinged joint enables the short arm to be oriented at a perpendicular to the long arm or folded in parallel atop the long arm. The sections of the long arm are also connected by hinged joints. This enables the sections of the long arm to be unfolded into a linear configuration or folded together into a neat stack. Connectors are also provided that are used to retain the square either in its fully open configuration or its fully folded configuration.

Abstract: A router template apparatus for routing stair stringers to accept end sections of stair members to facilitate building a stairway. The router template apparatus includes a rectangular frame member that has an opening extending therethrough for receiving a router. The frame member comprises a pair of elongate side portions and a pair of elongate end portions. A pair of brace members is pivotally coupled to opposing corner portions of the frame member. Each of the brace members is oriented generally parallel to each other when attached to the frame member. When inside edges of the brace members are positioned adjacent to side edges of a stair stringer and the frame member is positioned atop a broad surface of the stringer, the opening guides the router to facilitate cutting out a recessed section in the stringer such that an end portion of a stair member is positionable in the recessed section to facilitate building a stairway.

Abstract: A method for defining a regular or irregular shape utilizes a template apparatus including a plurality of radially-adjustable corner members connected by length-adjustable straight edge members. The corner members include an angle scale to display the defined angle, while the edge members include a length scale to display the defined length of that edge.

Abstract: An adjustable template tool for stairways for speeding up and simplifying stair layouts. The adjustable template tool for stairways includes an elongate support assembly; and also includes a stair riser template member being adjustably mounted to the elongate support assembly with a fastening member; and also includes a stair tread template member being adjustably mounted to the elongate support assembly with a fastener.

Abstract: A carpentry tool for defining a plurality of measuring configurations is disclosed. The tool has a frame and an arm, where the arm is rotatably and slidably coupled to the frame. The frame may also include a collapsible rule and at least one bubble level. The members of the tool may also include various measuring indicators and angle indicators. The combination of the frame, the arm, the collapsible rule, and the bubble level allow the tool to be positioned in multiple measuring configurations.

Abstract: A collapsible square constructed according to the principles of the present invention includes a first elongated rigid leg having first and second ends and a second elongated rigid leg having first and second ends. The second elongated rigid leg is pivotally connected at its first end to the first end of the first elongated rigid leg. The collapsible square further includes a hypotenuse member comprising two elongated rigid leg portions. A first of the leg portions of the hypotenuse member and a second of the leg portions of the hypotenuse member have their first ends pivotally connected to the second end of the first elongated rigid leg and the second end of the second elongated rigid leg, respectively. The first of the leg portions and the second of the leg portions have second ends thereof connected to one another in a manner which permits the hypotenuse member to be folded.

Abstract: A tool for cutting the ends of conveyor belts square includes a T square having a cross leg standing transverse to the belt when the tool is used and a primary leg extending longitudinally along the belt. A pair of end links are adapted to engage opposite sides of the belt when the tool is used. The end links are pivotally connected to each of three cross links, which are pivotally connected to the primary leg of the T square at the midpoints of the cross legs. Accordingly, the primary leg lies along the center line of the conveyor belt when the end links are brought into engagement with the sides of the conveyor belt. By cutting along the cross leg, the belt is cut square to the center line of the belt.

Abstract: The accessorized collapsible multiscale comprises a plurality of elongate slats which are joined together along elongate edges thereof, each slat including at least one graduated scale thereon, the multiscale being collapsible by folding together of adjacent slats, and the multiscale including an accessory clip which is used to maintain a terminal position of a desired slat, with the clip angling the slat relative to a support surface therefor for ease in viewing the scale on the desired slat.

Abstract: A simple easy-to-use aircraft navigational plotter is disclosed. The device is used in conjunction with the signals and readouts received from a pair of VOR (Very high frequency Omni-directional Range) stations. A pair of plotter arms is rotatably connected to a central hub (1) and each is removably attached to a center point (11), which is part of a disc (2), that is affixed to a navigation chart over the VOR stations to be used for navigation. The attachment means of the plotter arms (4) to the center point discs (2) provides for a fit where the plotter arms each may both slide and rotate about the respective center point to which each arm is attached.

Abstract: A marking indicator template jig for marking a tile to be cut and positioned in an open area of a size smaller than a size of the tile. The jig includes first and second legs pivotally connected together. A first telescoping leg is pivotally connected to a second end of the first leg and a second telescoping leg is pivotally connected to a second end of the second leg. The first and second telescoping legs each have an adjustable length. The marking indicator template jig is movable between a first unextended position and a second extended and in use position wherein the first and second legs are positioned within an open area smaller than the tile and against adjacent tiles defining a first portion of the open area and the length of the first and second telescoping legs are adjusted to meet an obstruction defining a second portion of the open area such that the marking indicator template jig is of a dimension substantially equal to that of the open area for use in marking the tile for cutting.

Abstract: A ruler assembly includes a ruler to which a connecting member is pivotably connected and a magnifying member is pivotally connected to the connecting member so as to have a series of graduations defined on the ruler magnified through the magnifying member when the magnifying member is located in parallel to the ruler.

Abstract: The present invention herein called "LABEs", comprises a manipulative for assisting students in the visual understanding of the relationships of all angles in a rectangle, triangle, or other such geometric shapes relative to their side lengths, thus allowing the student to prove theorems used in the teaching of geometry. The manipulative further comprises a disk having indicia representing a 360 degree compass, the disk having a first fixed leg, bearing indicia in units of length, extending from the disk at a point adjacent the zero degree indicia mark, and a second leg, having a sleeve portion, which is pivotally attached to the center of the disk by a snap grommet, the sleeve portion being capable of accepting the fixed leg of a second LABE in a longitudinal, adjustable manner therein.

Abstract: An angle guide device is disclosed which includes a slotted base member pivoted at one end to one end of an angle guide member, an adjustment member pivoted at one end to the angle guide and carrying a slider element at the other end. The slider element is slidable in the slot but may be locked in any adjusted position. Numeric indicia indicate the angle between the base member and angle guide members in each position of the slides along the track. The base member is clamped to a workpiece by dual action clamps separately clamping to the workpiece and to the base member. Extension pieces may be attached to increase the length of the guide member.

Abstract: A leveling device for extending a course of siding around an interior or exterior building corner includes a center link and two elongate planar arms pivotedly attached to the link. The arms are provided with alignment edges for fitting under edges of siding and aligning the siding on the building. Recesses are provided in the arms adjacent the length and a pocket is provided in the link between the hinges. The recesses and pocket space the device from a corner molding secured to the building prior to attaching siding.

Abstract: A parallelogram tool for measuring exterior and interior angles is used in conjunction with a miter saw having a pair of pivotally mounted guide blocks. The tool is made of six link members that are pivotally interconnected to one another. One of the pivotal connections may be tightened to lock the tool into position after a measurement has been made, and at least one pivotal connector extends below the plane of the tool. The locked tool is then transferred to the flat plate of a miter saw having a pair of arcuate slots formed in it in bilateral relation to one another and having a central diametrically extending slot. The central slot receives the pivotal connector that extends below the plane of the tool. The arcuate slots guide a pair of pivotally mounted guide blocks which are placed into abutting relation to the measuring arms of the tool and then locked into position. The tool is then removed and items to have a miter cut formed in them are placed against the guide blocks.

Abstract: The invention provides a saw guide for a power saw or router of the type having a blade and a saw housing wider than the blade which directly overlies the blade during cutting. The saw guide includes a guide bar having a straight outer edge for guiding a peripheral guide surface of the saw housing, a gauge bar having a straight outer edge, and a hinge pivotally connecting the gauge bar to the guide bar. The gauge bar can be swung manually from a position in which the gauge bar and guide bar lie parallel on top of a flat workpiece to a position where the hinge and gauge bar are clear of the straight outer edge of the guide bar so that the saw can move without obstruction along the straight outer edge of the guide bar.

Abstract: The present invention relates to a kind of movable device which varies at any angle to serve as measurement ruler, and more particularly to an improved structure of measurement ruler with multiple functions in use. The ruler's main body is L shaped with engraved number of degrees on both sides, one side with sliding channel and a sliding through installed at the lower end of the sliding channel, which is wider in breadth than the channel, one measurement ruler like a straight stick with engraved numbers in degrees, one end of which is in conical shape and the other end of which at the top there installs a sign index with a conical peeping hole and a set of installation holes, one scale ruler in semi-circular shape with sliding block in consecutive form. Under it, there is sliding column on which there are threaded lines. AT the front end, there in an assembly hole. The semi-circular body is engraved with the degrees in angle.

Abstract: An end of a rectangular scaled straight edge is pivotally connected to an end of a rectangular unscaled straight edge. The scaled straight edge has a longitudinal slot wherein a stem is retained by a compression lock. The stem passes through a hole in one end of a flat connecting bar that is disposed between a bearing of the compression lock and the scaled straight edge. The other end of the connecting bar is pivotally connected to the unscaled straight edge. When the lock is open, the stem is slidable within the slot, thereby providing an adjustable angle between the straight edges. When the lock is closed, the position of the stem is fixed within the slot, thereby sustaining a fixed angle between the straight edges.

Abstract: A square is disclosed which is especially adapted for the marking of angular dimensions on, or the transfer of angular dimensions from, rafters or other building materials and the like in that only one adjustment is needed to vary the angle being marked or measured. The disclosed square has a first elongate arm, a second elongate arm, and an elongate base having a distal and a proximal end, and a first elongate slot extending longitudinally intermediate its distal and proximal ends. The first elongate arm has a proximal end and a distal end which is pivotally attached to the proximal end of the base. The second has a proximal end, a distal end which is pivotally attached to the proximal end of the first elongate arm, and a second elongate slot extending intermediate its distal and proximal ends for intersection with the first slot.

Abstract: An apparatus for measuring compound angles. This apparatus makes use of the standard T-bevel square, which is capable of measuring only a single angle. The invention is a compound angle blade with a split collet joint. The compound blade attaches by replacing the bolt of the T-bevel with fastening means attached to the split collet joint of the invention. This fastening means secures both the compound angle blade and the standard T-bevel square blade. The split collet joint which is attached perpendicularly to the main body of the T-bevel moves in a 360 degree radius parallel to the main body of the T-bevel. The compound angle blade is capable of rotation in approximately a 180 degree radius relative to the split collet joint. The combination of the rotation of the split collet joint and the compound angle blade allows for compound angle measurements both perpendicular and askew relative to the angle of the standard T-bevel. The angles of both blades are fixed by the same fastening action.

Abstract: A mitering guide device for a circular saw has a protractor including a curved edge with angle markings thereon. An arm is pivotally attached to the protractor and performs in conjunction with a saw guide for defining an angle to be cut. A hinge is attached to the protractor and saw guide through multiple hinge joints for permitting various thicknesses of boards to be cut.

Abstract: An improved measuring apparatus (10) including male (12) and female (11) measuring instruments equipped with complimentary pairs of male (14) and female (13) sleeve bodies bearing a multiplicity of variably aligned calibrated indicia (50) representative of different drawing scales; wherein, the male (12) and female (11) measuring instruments are adapted to be captively engaged in L and inverted L configurations as well as in an end to end straight line configuration.

Abstract: The measuring tool includes a pair of measuring sections pivotally hinged one to the other. Each section includes a flat plate mounted for pivotal movement about an axis normal to the hinge axis. Frictional locking means lock each plate in adjusted pivotal positions about its axis. A frictional locking means also locks the pivoted sections one to the other in adjusted positions about the hinge axis. The plates contain measuring indicia and are slidable linearly in a direction parallel to the axis about which the plates are pivoted.

Abstract: The disclosed measuring instrument includes a pair of members arranged together to form a right-angled L and the members having indicia providing linear scales useful in measuring areas in architectural plans and the like. The members are separable at the joint that forms the corner of the L and are further capable of re-connection to each other in end-to-end relationship so as to provide an elongated straight edge. The junction of the members at the corner of the L includes a pivot about which one member may be moved through a 180.degree. range to form an inverted L. In a modification, at least one of the members includes a wing element along one edge and rockable about a separable pivot on an axis parallel to that one edge.

Abstract: An angle measuring instrument comprises, a multi-sided plate member which includes a first side and a second side that form an acute angle therebetween when they intersect, a third straight side that forms with the second side an obtuse angle when they intersect, and a graduated semi-circular region. A first measuring arm is pivoted to the plate member at the center of the semi-circular region, a second measuring arm is pivoted to the plate member at a point near the acute angle outside the circular region, and a third measuring arm is pivoted to the first and second measuring arms to form a parallelogram linkage with the plate. The second, and third sides of the plate member serve as measuring sides in cooperation with the measuring arms, thereby diversifying the application of the instrument.

Abstract: An adjustable carpenter's square is formed by having a main beam with a head secured to an upper portion of the main beam with a slide secured to the upper end of the main beam. The head and the slide are partially rotatablely secured to the main beam. The head and the slide are slideably and adjustably connected to each other also in addition to being connected to the head.