BRIEF DESCRIPTION OF THE DRAWINGS
The foregoing and other objects will become more readily apparent by referring to the following detailed description and the appended drawings in which:
FIG. 1 is a perspective view of an integral framing square with levels having two arms which are articulatable about their conjoined ends.
FIG. 2 is a side view of the invention illustrating the articulatable framing square with levels and integrated protractor.
FIG. 3 is a perspective view of the catch mechanism as attached to an I-beam of an extension.
FIG. 4 is an exploded view of the catch mechanism depicting the spring and attached catch, the catch plate and the support plate.
FIG. 5 is a side view of the spring and catch.
DETAILED DESCRIPTION OF THE DRAWINGS
FIG. 1 depicts a perspective view of the device 50 from the side opposite of the protractor 1. Depicted are the arms 2 of the framing square 50 that articulate about the threaded fastening knob 12 that joins the two arms 2. The catch slots 5 that receive the catch 20 are also shown. The inferior protractor plate 9 is depicted as being fastened to an arm 2 by pop rivets 11. The pop rivets connecting the superior protractor plate 13 to an arm 2 can be viewed on the opposing arm 2. Parallel levels 7 and perpendicular levels 6 can be seen on the face 3 or mid-panel 3 of the I-beam 10. Markings 8 for measurement of distance are present on the I-beam wings 4.
FIG. 2 depicts a side view of the device 50 from the protractor side. Depicted are the catch slots 5 on the face of the I-beam 10, the protractor gauge 1, the superior protractor plate 13, and the pop rivets 11 connecting the superior and inferior protractor plates, 13 and 9 respectively, to the arms 2.
FIG. 3 is a perspective view of the catch mechanism 30 as attached by catch plate pop rivets 31 to the face 23 of an extension I-beam 21. Shown are the spring plate 22, spring plate fasteners 24, catch fasteners 25, catch plate slot 26, catch support plate 27, catch plate 28, and catch release finger groove 29.
FIG. 4 is an exploded view of the catch mechanism. Shown are the catch plate 28, the catch support plate 27, the spring plate 22, and the catch 32. The spring plate 22 is shown to be fastened to the top of the catch plate 28 by catch plate pop rivets 31. The catch 32 is attached to the bottom of the spring plate 22 so that it is positioned to pass through the catch plate slot 26 and engage the arm catch slot 5. The catch fasteners 25 are tightened so as to allow some movement of the catch 32 itself. This facilitates disengagement of the catch 32 from the arm. The catch plate 28 and catch support plate 27 are depicted with the rivet holes 33 at the end opposite the catch 32. The catch plate 28 is depicted as possessing spring plate rivet holes 34 and a catch slot 26 through which the catch 32 passes.
FIG. 5 depicts a side view of the spring plate 22. Shown are the spring plate 22, catch plate pop rivets 31 for fastening the spring plate 22 to the catch plate 28, one of two catch fasteners 25 that fasten the catch 32 itself to the spring plate 22, and the catch 32. The catch 32 is shown to possess a beveled forward edge 35 to facilitate disengagement of the catch 32 from its rest position when it engages the I-beam 10 or 21 of an arm 2 or extension. The trailing edge 36 of the catch 32 is shown to not be beveled, but in fact be flat and terminating at a right angle with the catch bottom 37 so as to secure the catch 22 in the catch plate catch slot 26 and the arm or extension catch slot 5.
Patent Application
20080034599
