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 . ch from the end of the plate, and thenstep off the spaces at about this pitch to the flange line at the 163; OUTS/DE PL/ITE i i / I *^ 42-^ 5-S«=9| FIG. 16. corner. The same spacing may be used on the other step off an even number of spaces in the curved part,changing the pitch if necessary, also step off the spaces on thebottom at as near the same pitch as possible. For the inside plate, the only difference in
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 . ch from the end of the plate, and thenstep off the spaces at about this pitch to the flange line at the 163; OUTS/DE PL/ITE i i / I *^ 42-^ 5-S«=9| FIG. 16. corner. The same spacing may be used on the other step off an even number of spaces in the curved part,changing the pitch if necessary, also step off the spaces on thebottom at as near the same pitch as possible. For the inside plate, the only difference in the dimensionswill be in the length of the curved part at the corner. Theneutral diameter for this plate will be 11J4 inches, or the 14 LAYING OUT FOR BOILER MAKERS neutral diameter of the outside plate minus twice the thick- moved. After the plate is flanged the rivet line can be drawnness of the material. One-quarter of the circumference of a and the holes spaced to correspond with the holes in the ad-circle 11^ inches in diameter will be joining plate. 31416 314163141623562 = or 9 FIG. 17. This gives us then 97-32 inches as the length of this part ofthe plate. The spacing of rivets in the flat portions of the platewill be the same as in the outside plate. In the curved portionthe number of spaces must be the same, although the pitch willbe different. As there were five spaces in this part of the out-side plate there, must be five spaces in this part of the insideplate, but the pitch will be about inches instead of To lay out the hoads, first draw the flange line, making thehead 6 feet wide and 4 feet deep, with a 6-inch radius at the
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Keywords: ., bookcentury1900, bookdecade1900, bookidl, booksubjectsteamboilers
