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 . ont view. After all these lengths have been markedoft on the stick, two lines are laid off on the plate (as A. B. sketch) : lay the stick on each line (the lines having beenlaid oft on plate 4 inches apart) and mark the exact length oneach line : after this has been done bend a batten through allthe points and draw the line : this gives the line to which theplate is to be sheared. The holes for socket bolts and rivetsare ne
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 . ont view. After all these lengths have been markedoft on the stick, two lines are laid off on the plate (as A. B. sketch) : lay the stick on each line (the lines having beenlaid oft on plate 4 inches apart) and mark the exact length oneach line : after this has been done bend a batten through allthe points and draw the line : this gives the line to which theplate is to be sheared. The holes for socket bolts and rivetsare next laid off. After all marks are fixed with center-punch marks, the plate is sheared to size and holes punched. It isthen shaped to the work or angles of uptake. Sometimes the rivet holes are not put in until the plate isshaped and clamped in place and holes marked oft from finishes the outside sheets at side, one right and one left;they are both laid out from one template, the right and leftbeing made by the bending or shaping. The side sheets for the inner casing are laid out in exactlythe same way, but these will have to join the bottom plate, so. Up Take, FIG. 16. as to close the space entirely: the joint, or seam, is just abovethe radius at lower corners. These plates are rights and leftsafter they are bent the same as the outside plates. The outside front plate at top is measured off on the side\iew to get the true length: the widths are taken from thefront view and the spots joined, forming-a radius at top withside lines. The inside top plate front is laid off just the same as theoutside plate; this laps the angle at top of uptake and extendsdown to the 3-inch by 2-inch by 5-16-inch angle across thefront of box; it laps i^ inches on this angle, leaving % chlap for the door plate to rest on. The back plate and lining can be taken from the front view,as the exact shape of each is shown there. The bottom plate, or bottom of uptake, will be taken up , s
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1900, bookidl, booksubjectsteamboilers
