stair layout jig

If this is your first set of stairs or this is your 25th year crafting stairs this is the jig for you. Briefly stated, the invention is practiced by providing a stair stringer layout jig adapted to receive a pair of stringers disposed side-by-side adjacent one another. However, when scribing one tread and riser at a time on one stringer, there are minute accumulated errors. Supposing that a layout is desired on stringers 6, 8 of stairs having a tread length T and a riser length R. The pitch is set as described in FIG. Block 40 includes a thumb screw 50 which may be used to clamp the block 40 in track 42 and also to clamp the pair of extension attached linkage assemblies in place. 2 is an end elevational view (inverted) of the jig shown in FIG. 3 which are used to longitudinally locate base member 4. 1-3. 925.681.2326 Option 1 or 866.386.6571. 796,030 issued to Baumgartner on Aug. 1, 1905, wherein a straight edge is positioned along a stringer, and a carpenter's square is pivoted about a point located within the intersection of its two legs to change the pitch of the stairs, i.e., to change the relative proportions of the length of tread and riser. The clamps are retightened with hand crank 24' at the locations indicated at 18', 20' and the procedure is repeated over and over until the complete stringer layout has been accomplished. On the opposite side, a crank handle 24, threaded member 26 and collar 28 cooperate in a well known arrangement to cause clamping block 20 to squeeze the stringers together against clamp 18 when the crank handle 24 is turned. Our Stair Tread Jigs are made from cabinet grade Baltic Birch. The width of legs 30b, 32b used to layout the treads is preferably the proper thickness for a tread. The tread and riser are marked on each stringer by scribing along both of the edges of the carpenter's squares. To use the jig, I layout the rise/run for two treads on the nosing line and set a pair of dividers to the line length, then the mark out the rest of the stringer, squaring the intersection to the edge to align the indicator for the cut. Thumb screw 50' is then tightened. Still another object of the invention is to provide an improved stair stringer layout jig in which tread and riser dimensions may be adjusted on two stringers simultaneously and identically. Details about Stair Tread Jig Stair Gauge Stair Layout Tool. Add to cart. In order to simultaneously pivot the carpenter squares in opposite directions about their respective intersections, a common adjusting mechanism is located on the jig base 4 and is connected to both squares through a pair of linkage extension assemblies. The combination according to claim 1, wherein said jig base comprises a longitudinal member and wherein said locating means includes at least one spacer lip projecting from said longitudinal member and establishing a uniform space between the sides of said stringers. 1-3. 4 of the drawing, the operation of the adjusting means will be described. 4 of the drawing, the operation of the adjusting means will be described. 12. The jig is best made out of a stable hardwood like Maple. 2. 3. FIG. Thumb screw 50' is then tightened. 5. pdf), Text File (. A vernier adjustment serves to simultaneously pivot the carpenter's squares in opposite directions about their pivot points, so as to lay out stair riser and stair tread locations which may be simultaneously and identically varied in mirror relationship on both of said stringers. Similarly square 32 has a leg 32a, a leg 32b, and a pivot hole 32c within the intersection. Installing hardwood on stairs you need the stair measuring tool. Mark the first stair notch in the stringer. Smith Stair Systems offers a complete line of stairway installation tools designed specifically for stair installers to strengthen and speed up installations. 1, illustrating pivoting of the carpenter's squares, and. 4 above so that the points T (measured along legs 30b, 32b of the carpenter's square) and the points R (measured along legs 30a, 32a of the carpenter's square) are established and marked on the two stringers, it being understood that the hypotenuse passing through the respective points R and T must be parallel to the sides of the stringers. Block 40 includes a thumb screw 50 which may be used to clamp the block 40 in track 42 and also to clamp the pair of extension attached linkage assemblies in place. A pair of carpenter's squares are disposed symmetrically in mirror relationship on opposite sides of the stringers, and a pair of support members are attached between the base and respective squares so as to allow the legs of the squares to pivot. The Stair Jig 11. 5. Reference to FIG. FIG. 2 is an end elevational view (inverted) of the jig shown in FIG. However the apparatus is very complicated, has a large number of parts and is able to do only one stringer at a time. means for clamping said base and said stringers together. Preferably the clamping means comprises a transverse member and two clamps which may slide along the transverse member and squeeze the stringers and locating means together. 1-3. 1, illustrating pivoting of the carpenter's squares, and. Threaded linkage members 56, 62 are pivotable about post 41 on block 40 and may be clamped by thumb screw 50 to prevent pivoting movement on blocks 40 once they are in position. The invention, both as to organization and method of practice, together with further objects and advantages thereof, will best be understood by reference to the following description, taken in connection with the accompanying drawings, in which: FIG. generation, Foldable template for laying out stairway stringers and methods of using the same, Device for determining dimensional reductions, <- Previous Patent (Object measuring sys...). More particularly, the invention relates to an improved stair stringer layout jig in which the tread and riser dimensions may be simultaneously adjusted on both stringers so as to enable uniform tread and riser dimensions over the entire stairway. One such linkage extension assembly comprises an extension 52 rigidly attached to leg 30b, a vertical pin 54 with a threaded upper end attached to member 52 (see FIG. Common adjusting means are disposed on the base which are connected to the squares and adapted to simultaneously pivot the carpenter's squares in opposite directions about their pivot points, whereby the legs may be used to lay out stair riser and stair tread locations which may be simultaneously and identically varied in mirror relationship on both of said stringers. Layout everything before you make the first cut. Item Information. A bag of screws to fit most routers. The stringers should be cut from 2 x 12 framing lumber, #1 grade, free of knots. 1. Stair Tread Jig Our Stair Tread Jigs are made from cabinet grade Baltic Birch. Jigs or tools have been designed to assist in this procedure from the earliest days, as illustrated by exemplary U.S. Pat. As the operation begins, the jig is clamped in place by clamp members 18, 20. The offset dimensions are scribed along the opposite sides of the legs of the carpenter's square, i.e., on the side of the square toward the outside stringer edges. x 3 in. The width of legs 30b, 32b used to layout the treads is preferably the proper thickness for a tread. Plan your baluster line, prepare where your newels will be placed and plan the height of your handrail. Line up the jig perfectly with the two offset lines, as per diagram. Referring now to FIG. The T support 34 on the jig base 4 and the extension rods 36, 38 together comprise a pair of support members attached between the jig base 4 and the respective intersections of the squares which allow the legs of the squares to pivot around holes 30c, 32c in their respective intersections. This is a relatively simple process that can often seem difficult if you haven’t done it before. The technique of laying out treads and risers on a stair stringer is well known to those skilled in the art. 5 of the drawing illustrates the operation of the locating means and clamping means. If you don't have a professional stair measuring tool, you can do it yourself! It would be desirable to provide a simplified stringer layout jig, which would insure duplication of results on the two stairway stringers. Application filed by Ribeiro; Faustino A. FINISHING WORK ON BUILDINGS, e.g. The same drawing conventions noted above are followed in FIG. 3), and a threaded linkage member 56 connected between the upper end of pin 54 and a post 41 on block 40. Comes with routing bit, four cam followers, three nosing pieces and a stair … Sign in to check out Check out as guest . A set of inclined plates 22 with openings (not shown) receiving transverse member 16 permit locking clamp 18 on the transverse member. The width of legs 30a, 32a is such as to establish the proper "kickback" dimension on the riser. Stair Tread Jig Stair Gauge Stair Layout Tool. Select from many tools for tread & riser layout, marking and installing balusters, and drilling and installing handrails. Means for clamping the base member and stringers together include a transverse member 16 fixed perpendicular to base member 4 and a pair of spaced clamping blocks 18, 20 arranged to slide on the transverse member. whereby said legs may be used to lay out stair riser and stair tread locations, which may be simultaneously and identically varied in mirror relationship on both of said stringers. Price: US $78.99. Base member 4 includes a pair of depending small spacer lips 12, 14 seen in FIG. Facebook; Twitter; Facebook; Twitter; Solutions. It would also be desirable to provide an improved stringer layout jig in which the tread and riser dimensions could be adjusted simultaneously and identically on two mating stringers at once. Add to cart. 3,478,434 issued to Catalano on Nov. 18, 1969. 5. The combination according to claim 2, wherein said clamping means comprises a transverse member fixed perpendicular to said jig base, and first and second clamp members disposed on said transverse member and arranged to selectively squeeze said stringers together and hold the jig base located along and between stringers. This causes carpenter squares 30, 32 to pivot in opposite rotational directions around points 30c, 32c as indicated in the drawing. Only 1 left in stock - order soon. No. tools for marking steps, PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362, Parallelogram tool for locating stairway and stair landing railings, Mechanism for simultaneously adjusting the step support angles of a straight staircase, Precision machinist's square with indicator, Apparatus for measuring and cutting treads, Stair layout template and method for using the template, Improvement in attachments to carpenters squares, Device for determining dimensional reductions, Foldable template for laying out stairway stringers and methods of using the same, Precision adjustable woodworking platform, Aircraft assembly tool and its manufacturing method, Workpiece securing apparatus for a machine tool, Guiding assembly for a portable power tool, Vise jaw support system and interchangeable vise jaws therefor, Universal system for the support and positioning of a workpiece, Device for imprinting surface of fresh concrete, Means and method for measuring, adjusting and feeding of logs into a saw or the like, Drill or miller guiding device for exchangeable driving machines, Clamping device to be mounted on a frame or bench jig for checking any deformations of a vehicle body, Lapse for failure to pay maintenance fees, Information on status: patent discontinuation, Expired due to failure to pay maintenance fee. A stair stringer layout jig used on a pair of stringers disposed side-by-side adjacent one another comprises a longitudinal base lying along and between the stringers, with spacers for uniformly spacing the stringer sides. 4. U.S. Pat. Each one of the pair of linkage extension assemblies is connected between one leg of a square and is pivotably connected to the block 40. Reference to FIG. 5 is a plan view illustrating the jig in two different longitudinal positions along the stringers. U.S. Pat. The effect of tread overhang or nosing thickness on the depth In an older thread, it lists a book called, "Stair Layout" by author Stanley Badzinski Jr, the 1971 printing. The finish dimension is scribed from R to the apex of the carpenter's square and from there to point T, i.e., on the side toward gap 10.
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