Geometrical instruments – Straightedge type – Square and pivoted straightedge
Reexamination Certificate
2003-01-27
2004-04-27
Bennett, G. Bradley (Department: 2859)
Geometrical instruments
Straightedge type
Square and pivoted straightedge
C033S465000
Reexamination Certificate
active
06725555
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to squaring tools and, more specifically, to a rafter square having a pivoting guide member and related locking means that will allow the user to selectively position the square at the appropriate angle required for the cut as determined by indicia thereon that is used to calculate the angles accordingly. Furthermore, there is a hollow storage compartment for protectively storing other required charts that may be needed for complex calculations that are infrequently used.
2. Description of the Prior Art
There are other squaring tools. Typical of these is U.S. Pat. No. 330,799 issued to G. B. Orendorff on Nov. 17, 1885.
Another patent was issued to D. W. Warnock on Mar. 15, 1887 as U.S. Pat. No. 359,372. Yet another U.S. Pat. No. 518,103 was issued to L. M. Hodge on Apr. 10, 1894 and still yet another was issued on Nov. 10, 1903 to W. B. Mahan as U.S. Pat. No. 743,900.
Another patent was issued to E. A. Williams on Jul. 20, 1909 as U.S. Pat. No. 928,569. Yet another U.S. Pat. No. 1,191,008 was issued to E. Laakkonen on Jul. 11, 1916 and still yet another was issued to R. H. Johnson on May 1, 1923 as U.S. Pat. No. 1,453,625 and I. Dion was issued U.S. Pat. No. 1,913,919 on Jun. 13, 1933. U.S. Pat. No. 2,251,208 was issued on Jul. 29, 1941 to D. L. Sigmon and on Dec. 13, 1955 L. E. Maupin was issued U.S. Pat. No. 2,726,452. K. E. Kish was issued U.S. Pat. No. 4,712,307 on Dec. 15, 1987. Ellam was issued U.S. Pat. No. 6,330,752 on Dec. 18, 2001 and on Sep. 26, 1995 Kook et al. was issued U.S. Pat. No. 5,452,522. G. S. Rester was issued U. S. Pat. No. 6,122,834 on Sep. 26, 2000.
U.S. Pat. No. 330,799
Inventor: George B. Orendorff
Issued: Nov. 17, 1885
A protractor, A, having an arm, B, and center, C, combined with a movable arm, D, at right angle and provided with the curved indicator-arm d, substantially as shown, for the purpose specified.
U.S. Pat. No. 359,372
Inventor: David Wesley Warnock
Issued: Mar. 15, 1887
The combination of the body A, having slots a, c, the blade B, provided with the beveled shoulder a, the slotted bar C, provided with the pivot b, substantially as herein shown and described.
U.S. Pat. No. 518,103
Inventor: Leonard M. Hodge
Issued: Apr. 10, 1894
In an instrument of the class described, a scale-plate having an integral plumb-cut member, and a bottom-cut member, and having on one side graduations showing the relative dimensions of parts for common rafters of different rises and runs, and having on the other side, graduations showing the relative dimensions of octagon rafters for different rises and runs, in combination with a main frame, a blade slidable on said main frame and having a changeable connection with said scale plate, as set forth.
U.S. Pat. No. 743,900
Inventor: William B. Mahan
Issued: Nov. 10, 1903
In an instrument of the class described, a scale plate having an integral plumb end member, and bottom-cut member, and having an integral bottom cut member, and having on one side graduations showing the relative dimensions of parts for common rafters of different rises and runs, having on the other side, graduations showing the relative dimensions of octagon rafters for different rises and runs, in combination with a main frame, a blade slidable on said main frame having changeable connection with said scale plate.
U.S. Pat. No. 928,569
Inventor: Edmund A. Williams
Issued: Jul. 20, 1909
A device of the character described, comprising a longitudinally slotted handle, a square pivotally attached at its outer corner to one corner of said handle, one blade of said square having diagonal lines adjacent its inner edge and adapted to lie in said slot, and means to secure said handle and adjusted position.
U.S. Pat. No. 1,191 008
Inventor: Ephraim Laakkonen
Issued: Jul. 11, 1916
A carpenter's square comprising a blade and a tongue on the inner edge thereof, a notched plate mounted in the curved edge of the quadrant, a forked setting arm pivoted to the square and embracing the quadrant, and a pivot latch mounted on the setting arm and selectively engageable in the notches of the plate to secure the setting arm in a desired adjustment.
U.S. Pat. No. 1,453,625
Inventor: Robert H. Johnson
Issued: May 1, 1923
A tool comprising a butt, a blade pivoted to the butt, said butt having a notch in one edge thereof, curved parts at each end of the notch arranged to lie at opposite sides of one edge of the blade, when said blade is disposed at right angles to the butt.
U.S. Pat. No. 1,913,919
Inventor: Isaie Dion
Issued: Jun. 13, 1933
A square comprising blade and tongue members pivoted to each other at their meeting ends, said blade member being formed with a recess into which the tongue member may be received as a whole when it is swung into a folded position, a screw carried by the blade member adapted to engage the end of the tongue remote from the pivot when the members are closed upon each other for securing them together, one of the members having an arcuate slot concentric with the pivot, a screw passing through said slot and engaging the other member of the square so as to fasten the members in any desired angular relationship with respect to each other, and said member with the arcuate slot being countersunk at one end of said slot to afford a deeper seat for engagement with the head of said screw so that the members may be positively locked when they swung to right angles with respect to each other.
U.S. Pat. No. 2,251,208
Inventor: Dallas L. Sigmon
Issued: Jul. 29, 1941
The combination with a square having body and tongue members, of a radial arm having scale markings theron substantially as shown and described, a quadrant shaped arm pivotally attached to the tongue member aforesaid, and the said quadrant shaped arm having provided a straight outer edge adapted to form with the radial arm the angle of the side cut for hip, valley and jack rafters of a gable roof when the body member and radial arm aforementioned are adjusted to the angle of inclination of the said rafters, and means provided on said quadrant shaped arm for registering on the scale markings provided on the radial arm aforesaid.
U.S. Pat. No. 2,726,452
Inventor: Leslie E. Maupin
Issued: Dec. 13, 1955
A device of the class described, a quadrant plate having a level ruling edge, a plumb ruling edge and an arcuate edge, a pivot pin on said plate with the axis thereof in alignment with said level ruling edge and at the geometric center of said arcuate edge, a pivot pin on said plate with the axis thereof in alignment with said axis of the pivot pin, arcuate scales and indicia on said plate with said axis of said pivot pin as the geometric center thereof, cooperating indicia on said bar, said bar consisting of a pair of similar strips spanning and adapted to traverse the opposite sides of the quadrant plate, both ends of each of said strips projecting beyond the peripheral edge of said plate, spacing elements fixed between the adjacent projecting ends, a scale arm pivotally mounted on said quadrant plate between said pivot pin for aid bar and the plumb edge of said plate and adapted to be extended outwardly at right angles to said plumb edge.
U.S. Pat. No. 4,712,307
Inventor: Karl E. Kish
Issued: Dec. 15, 1987
The rafter angle device includes a body in the form of a generally U-shaped plate of metal or the like having a horizontal base and spaced first and second vertical arms at opposite ends thereof A third arm is pivotally connected to the plate at about the end of the base bearing the first arm and extends beyond the second arm. The third arm may releasably receive and is releasably securable to at least one of the first and second arms in any position between about horizontal and vertical, as by a locking nut. The first arm has a generally triangular support portion secured to the base about halfway along the length thereof and defining a spaced pair of curved slots, with angle, hip rafter valve and common jack plumb cut indicia disposed along the perimeter of the slots thereof The support por
Bennett G. Bradley
Kroll Michael I.
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