Home instruction for sheet metal workers . aised diamond shown by H2 in elevation and by H° in sec-tional view, Fig. 139, is developed by taking the girth of 1 2 3 2 1in F£° and placing it on any vertical line below the face of thediamond as G1 H1, Fig. 139A, from 1 to 3 to 1, through whichhorizontal lines are drawn and intersected by vertical lines(partly shown) dropped from the intersections 1 to 3 in H2,these intersections being obtained from 1 to 3 in H° in the sec-tional view, Fig. 139 (connecting lines not being shown). Tracea line through points thus obtained in the pattern, Fig. 139A,t
Home instruction for sheet metal workers . aised diamond shown by H2 in elevation and by H° in sec-tional view, Fig. 139, is developed by taking the girth of 1 2 3 2 1in F£° and placing it on any vertical line below the face of thediamond as G1 H1, Fig. 139A, from 1 to 3 to 1, through whichhorizontal lines are drawn and intersected by vertical lines(partly shown) dropped from the intersections 1 to 3 in H2,these intersections being obtained from 1 to 3 in H° in the sec-tional view, Fig. 139 (connecting lines not being shown). Tracea line through points thus obtained in the pattern, Fig. 139A,then J1 is the pattern for the front of the diamond panel. From3° erect the vertical line 3° AT and trace the miter cut 3° 2° 1 Making an Ornamental Cornice 109 on the opposite side of 3° AT as shown by 3° 2 1. Then1° 3° 1 is the pattern for the head of the panel, four heads andtwo fronts being required. The patterns for the inside and the outside of the bracket arepricked directly from the sectional view in the detail drawing,. Fig. 142. Pattern for Bracket Sides. Fig. 139 being reproduced in Fig. 142, in which A B C D E F Gis the pattern for the outside and A H J K D E F G for theinside, the dotted lines indicating where laps should be placed forsoldering. The method of pricking off one pattern on the metaland using it for the two sides will be explained later, as well ascutting out the shaded incised work. This completes the full setof patterns for the bracket. The pattern for the raised panel 110 Home Instruction for Sheet Metal Workers between the bracket and modillion in the elevation in Fig. 139ais obtained by adding the ^-in. projection in the sectional view,Fig. 139, and placing it at right angles to the top, side and bottomof panel shown by the dotted lines in Fig. 139A. Four of thesewill be required, stripping the curved parts with }£-m. disks shown by i1 will be needed, also stripped $4 in. For thepattern for the dentil O1, Fig. 139, in sectio
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
