WO2004109221A2 - Outil de menuiserie - Google Patents

Outil de menuiserie Download PDF

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Publication number
WO2004109221A2
WO2004109221A2 PCT/US2004/016983 US2004016983W WO2004109221A2 WO 2004109221 A2 WO2004109221 A2 WO 2004109221A2 US 2004016983 W US2004016983 W US 2004016983W WO 2004109221 A2 WO2004109221 A2 WO 2004109221A2
Authority
WO
WIPO (PCT)
Prior art keywords
tool
square
lumber
support member
framing square
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2004/016983
Other languages
English (en)
Other versions
WO2004109221A3 (fr
Inventor
Adam Greto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2004109221A2 publication Critical patent/WO2004109221A2/fr
Publication of WO2004109221A3 publication Critical patent/WO2004109221A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers
    • G01B3/566—Squares
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L7/00—Straightedges
    • B43L7/10—Plural straightedges relatively movable
    • B43L7/12—Square and pivoted straightedges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L7/00—Straightedges
    • B43L7/10—Plural straightedges relatively movable
    • B43L7/14—Square and sliding straight edges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/26—Implements for finishing work on buildings for mounting staircases, e.g. tools for marking steps

Definitions

  • the present invention relates to a carpentry tool and, more particularly, to a tool that may be used to measure and mark angles on a piece of lumber or similar workpiece during the construction of roof rafters, stair stringers and similar angled structures.
  • a stringer is the outer supports of a staircase that holds the stairs' risers and treads.
  • Every set of stairs is defined by the rise and run in which it will be installed.
  • the rise is the vertical distance that the stairs will cover, and the run is the horizontal length occupied by the stairs.
  • the carpenter must determine the respective lengths for the risers and treads of the stairs. Defined in terms of each other, the length of the riser is the vertical distance between the individual treads, and the length of the tread is the horizontal distance between the individual risers. The determination of these lengths involves consideration of building codes and architectural preferences.
  • the carpenter must physically lay out the stair stringer on the lumber workpiece. This task is complicated by the necessity of repeated orthogonal measurements that must be made to mark the correct boundaries of the risers and the treads. Stringers are generally marked for cutting, using the outside right angle surface of a framing square. One leg of the right angle is the riser, the second leg of the triangle is the tread, and the hypotenuse is situated at the edge of the workpiece.
  • the carpenter After marking the position of the riser and the tread, the carpenter needs to mark on the edge of the workpiece the end point of one step to start the layout of the next step. This leads to a source of error due to the fact that the edge of the workpiece will not be perfectly square.
  • the mill run construction grade lumber typically used for stringers has a significant radius of curvature. This radius means that the hypotenuse of the triangle used to lay out the steps, instead of being on the surface of the workpiece, is in actuality located in open space.
  • the carpenter will therefore mark the end point of the step by sighting along a line that is perpendicular to the square, and that passes through the end of the hypotenuse. Because the carpenter must make this sight at arm's length, the marking and repositioning of the framing square is subject to significant accumulated error.
  • bugs are small structures that are attached to the framing square using C-clamps, locking screws or similar devices to aid in proper placement of the square on the workpiece.
  • the bugs are secured to the square at positions such that, when the square is brought into position on the top face of the lumber to be cut, they abut the side of the lumber, thus properly positioning the square to make the desired marking. While the use of bugs on the framing square is a definite improvement over unaided hand placement of the square at each marking location on the stringer, the bugs have several disadvantages that preclude fully error-free marking.
  • the bugs are small, for purposes of convenience. As such, however, they are frequently lost or not easily located in a tool box. The bugs are also susceptible of being loosened and/or knocked off the square, and must then be reattached, or, if lost in the process, replaced. Further, the lumber that is generally employed to make stair stringers, for example, does not have sharp edges, rather the edges are somewhat rounded. This can lead to an imprecise abutment of the bugs against the lumber, and can lead to slippage of the bugs up and over the edge of the lumber. Considerable time can be lost in having to continually reposition the square when this occurs, and if care is taken to avoid this problem, the work process as a whole is generally slowed down.
  • United States Patent No. 6,070,334 discloses a retaining bracket for a carpenter's square that is adapted to releaseably lock the square at a given position.
  • the bracket (10) includes a pair of locking elements (16) slidably positioned in a channel (14) within the bracket.
  • Each of the locking elements contains a locking arm (22) having a clamping screw (26).
  • the square is secured to the retaining bracket by abutting a side of the bracket to the side of the piece of lumber and then securing the square to the bracket via the locking elements.
  • the retaining bracket of the '334 Patent may be used to secure the framing square, the assembly must be disassembled if it becomes necessary to reposition the framing square, such as when the square must be shifted from right hand to left hand use, or vice versa. Such disassembly and reassembly is inefficient in that valuable time is lost. Further, such manipulation can lead to incorrect markings.
  • United States Patent No. 6,233,835 discloses a scribe/guide tool to be used as a compass in laying out stair stringers.
  • the guide tool (10) is designed for use in connection with a measuring device such as a framing square.
  • the main body (12) of the guide tool contains a central opening (121) designed for receiving a clamping element (14).
  • the clamping element attaches the guide tool to a cooperating tool (24) such as a straight edge or framing square.
  • the cooperating tool can be affixed to the workpiece and adjusted to properly mark off the rise and run.
  • this device must be disassembled when it is necessary to reposition the cooperating tool.
  • the guide tool is not designed to be permanently affixed to the cooperating tool; allowing for it to be unable when the cooperating tool is used.
  • the tool is able to mark the same angles on one piece or two parallel pieces of wood without disassembly of the tool.
  • the present invention is a carpentry tool that is used to measure and mark angles on a piece of lumber such as a roof rafter or a stair stringer.
  • the tool comprises a framing square having longitudinal slots extending substantially the entire length of and a support member.
  • the support member is comprised of two identical fiat-faced, rectangular structures, each having at least one longitudinal slot extending substantially the full length of the structure.
  • the rectangular structures are attached to one another in such a manner as to leave a gap between the structures for insertion of the framing square.
  • the framing square is inserted into the gap between the structures and the slots of the framing square are aligned with the slots of the structures.
  • the framing square is held to the support member through engagement means such as a nut and bolt assembly or a retaining pin. As constructed, the framing square can be slidably positioned with respect to the support member when the support member is held in place against the outer edge of the workpiece.
  • engagement means such as a nut and bolt assembly or a retaining pin.
  • Figure 1 is an isometric view of the carpentry tool of the present invention.
  • Figure 2 is a top view of the carpentry tool of the present invention showing the framing square adjusted at various angles with respect to the support member.
  • Figure 3 is a top view of the carpentry tool of the present invention.
  • Figure 4 is a side view of the carpentry tool of the present invention. Detailed Description of the Invention
  • the present invention relates to a carpentry tool used in the construction of stair stringers, roof rafters and other structures requiring the measurement and marking of angles on a workpiece, as will oe apparent to those skilled in the art.
  • a carpentry tool (1) consisting of a framing square member (2) and a support member (3).
  • the framing square member (2) is typical of similar devices known in the art and is comprised of a body (4) and a tongue (5) set in perpendicular relation to one another so as to form a 90° angle.
  • the body (4) of the framing square member (2) is both longer and wider than the tongue (5).
  • both the body (4) and tongue (5) of the framing square member (2) are formed with at least one longitudinal slot (6) extending substantially the entire length of each.
  • the support member (3) is formed by a pair of identical rectangular structures (7, 8) superimposed upon one another.
  • Each rectangular structure (7, 8) is formed with at least one longitudinal slot (14) extending substantially its entire length.
  • the rectangular structures (7, 8) are held separate from one another in such a manner so as to leave a gap (9) therebetween.
  • the gap is created by using spacers (10) commonly known in the art.
  • the framing square member (2) is inserted into the gap formed in the support member so that the body and tongue of the framing square are disposed between the rectangular structures.
  • the framing square member (2) is slidably affixed to the support member (3) via engagement means (13).
  • the engagement means such as a nut and bolt assembly, a retaining pin assembly or other similar devices known in the art slidably affixes the slots of the tongue and body of the framing square with slot of the support member.
  • first surface (11) and a second surface (12) perform the function of the bugs used in the prior art.
  • Either surface can be placed upon the edge of a workpiece when measuring and marking angles.
  • the engagement of one of the surfaces with the edge of the workpiece holds the carpentry tool in affixed position, allowing the carpenter to work more efficiently.
  • the use of the two surfaces allows the tool of the present invention to be used on the opposite side of the workpiece without disassembly of the tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

L'invention concerne un outil de menuiserie permettant de fixer une carré de cadrage sur une pièce, ledit carré servant alors à mesurer et à marquer des angles de découpage dans cette pièce. L'outil comprend un élément de cadre correspondant et un élément de soutien, mutuellement enclenchés coulissants. L'élément de soutien comprend deux barres rectangulaires parallèles tenues ensemble de manière à permettre à la langue et au corps du cadre d'être placés entre ces barres. Un tel arrangement donne un carré de cadrage à deux bordures transversales, ce qui permet d'utiliser le cadre de chaque côté de la pièce sans désassemblage.
PCT/US2004/016983 2003-05-31 2004-05-28 Outil de menuiserie Ceased WO2004109221A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45246703A 2003-05-31 2003-05-31
US10/452,467 2003-05-31

Publications (2)

Publication Number Publication Date
WO2004109221A2 true WO2004109221A2 (fr) 2004-12-16
WO2004109221A3 WO2004109221A3 (fr) 2005-06-09

Family

ID=33510367

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/016983 Ceased WO2004109221A2 (fr) 2003-05-31 2004-05-28 Outil de menuiserie

Country Status (1)

Country Link
WO (1) WO2004109221A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9121688B1 (en) * 2013-03-22 2015-09-01 Stephen F. Schmid Layout tool for use with a framing square
US10300735B2 (en) 2017-08-18 2019-05-28 Earl Anthony Mullins Framing tool adaptable for use with a framing square

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US35159A (en) * 1862-05-06 Improvement in joinersj squares
US666346A (en) * 1899-11-22 1901-01-22 Henry J Goelzer Carpenter's square.
US935067A (en) * 1908-08-26 1909-09-28 Leander B Stewart Combined bevel and square.
US1050969A (en) * 1911-03-30 1913-01-21 Daniel C Mcleod Framing-tool or protractor.
US1237790A (en) * 1917-01-06 1917-08-21 Horatio G S Kidder Framing-tool.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9121688B1 (en) * 2013-03-22 2015-09-01 Stephen F. Schmid Layout tool for use with a framing square
US10300735B2 (en) 2017-08-18 2019-05-28 Earl Anthony Mullins Framing tool adaptable for use with a framing square

Also Published As

Publication number Publication date
WO2004109221A3 (fr) 2005-06-09

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