Laying out for boiler makers and sheet metal workers; a practical treatise on the layout of boilers, stacks, tanks, pipes, elbows, and miscellaneous sheet metal work . FIQ 18 1 UlL N ^ Li 1 1 r 8 1 _ : »• :u Wx 7 F/ 1 J 0 /I A 9 ^ 1 / il ^W \ T » y^ ? fH V V \ \ V \ ^ ? 1 PATTERN FOR MIDDLE SECTION OF A QG-DEGREE TAPERING ELBOW. the line 9/t and continue cutting the vertical dotted lines suc-cessively until all the points on Fig. 3 are established. Then connect these points with the points on the basecircle I, 5, 9, Fig. 3, as la, 02, 2h, ^3, 3r, r4, etc., until all areconnected. Take
Laying out for boiler makers and sheet metal workers; a practical treatise on the layout of boilers, stacks, tanks, pipes, elbows, and miscellaneous sheet metal work . FIQ 18 1 UlL N ^ Li 1 1 r 8 1 _ : »• :u Wx 7 F/ 1 J 0 /I A 9 ^ 1 / il ^W \ T » y^ ? fH V V \ \ V \ ^ ? 1 PATTERN FOR MIDDLE SECTION OF A QG-DEGREE TAPERING ELBOW. the line 9/t and continue cutting the vertical dotted lines suc-cessively until all the points on Fig. 3 are established. Then connect these points with the points on the basecircle I, 5, 9, Fig. 3, as la, 02, 2h, ^3, 3r, r4, etc., until all areconnected. Take the distance from the line i, 9 to a, Fig. 3,and set it off on the line a, Fig. 5, establishing the point ;;then take the distance from the line i, 9 to b, Fig. 3, and set itoff on the line b, Fig. 5, establishing the point k; continueuntil all the distances are set off; then on the continuation ofthe line i, 9, Fig. 2, erect a perpendicular. Fig. 9. Onto thisperpendicular project the points a, b, c, d, c, f, g from Fig. points mark the vertical heights from the base line i,9 at the different points on the miter line Oil. Now. we are ready to erect the triangles. Draw two hori-zontal lines as in Figs. 6 and 7. On these, draw vertical lines zontal line, Fig. 7, fro
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Keywords: ., bookcentury1900, bookdecade1900, bookidl, booksubjectsteamboilers
