| 摘要 |
A jig comprising a support frame rectangularly-configured having first and second longitudinal sides, against the first of which a major beam is to be clamped. A pair of spaced pattern members are fixedly positioned on the frame and in which minor beams are mounted in contemplation of being secured (nailed) to the major beam and assembled, joined secured roofing panels. The pattern members include spaced notches to receive the minor beams in a perpendicular attitude to the clamped major beam. An outwardly upwardly inclining rack mounted along the second longitudinal side mounts the panels for assembly, joining and stapling in sequential fashion. Then the panels are mounted on the major beam and minor beams on the support frame, with an overhanging edge of the panels aligned with the centerline of the clamped major beam by aligning means on the jig. All are nailed together into a unitized roof scheme, removed from the jig and hoisted to the roofing area of a building slelton for installation, and assembled to a major beam already installed. Means are provided to change positioning for different lengthed minor beams and for different thicknesses of the major beam. The jig is portable, having utility at job site.
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