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 . and transfer them to Fig. 8 as shown. Now, take the lengthsof lines 9, 10, 11 and 12 on Fig. 3 from the quarter circle Sand transfer them to Fig. 8, each side of the center line 6,as shown at L, M and the bottom line; then a line tracedthrough these points will be the cut out of the hole. TO LAY OUT THE BREAST PLATE. First sketch up Fig. 4. Line JR is the center line. Thenstrike the quarter circle and divide that portion where t
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 . and transfer them to Fig. 8 as shown. Now, take the lengthsof lines 9, 10, 11 and 12 on Fig. 3 from the quarter circle Sand transfer them to Fig. 8, each side of the center line 6,as shown at L, M and the bottom line; then a line tracedthrough these points will be the cut out of the hole. TO LAY OUT THE BREAST PLATE. First sketch up Fig. 4. Line JR is the center line. Thenstrike the quarter circle and divide that portion where thebreast plate strikes into any number of equal parts, in thiscase five, and number them as i, 2, 3, 4, 5 and 6, and squarethese lines down to the base of the main ring as denoted by6, 5, 4, 3, 2 and /. Now extend these dotted lines to point Kand you are ready to lay out the breast plate. Fig. 5. Oneway to develop this plate is on the same principle as a coneis laid out. Another is by triangulation. To lay this outby the first method is to extend line JK, Fig. 4, to the center line 0, and with radius OJ strike the curved line on Fig. 5,using 0 as a center, and
Size: 1617px × 1545px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidl, booksubjectsteamboilers
