. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. representing the usual form and arrangement of "a pile" of "slabs" such as are employed in forming, when welded togetlier, a mass of iron from which boiler plates or bars of iron are rolled. Fig. 4. rejiresents such "a pile" of " slabs," which having been, as is generally the case, produced under the action of a forge hammer and anvil, having flat, or as is generally the case, slightly surfaces, causes the slabs so produced to h
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. representing the usual form and arrangement of "a pile" of "slabs" such as are employed in forming, when welded togetlier, a mass of iron from which boiler plates or bars of iron are rolled. Fig. 4. rejiresents such "a pile" of " slabs," which having been, as is generally the case, produced under the action of a forge hammer and anvil, having flat, or as is generally the case, slightly surfaces, causes the slabs so produced to have certain hollow parts, or slightly concave portions of their surfaces, so that when piled one upon the other, as in fig. 4, the risk of having hollow spaces be- tween is almost certain. The hollow spaces are represented in the figure by the dark irregular lines between the slabs. Referring to fig. 4, a, b, c, d, represent a pile of four slabs laid on the anvil welding hot; owing to the concave irregularities of the surfaces, the parts most cei^tain to come into contact first are ge- nerally the exterior edges of the slabs. The efi'ect of the blows of the hammer is first to weld the parts in natural contact; and by continuance of the blows, the interpiwiiig scoria or "cinder" is !, in a degree more or less pcvt.'-tly, according to the energy oi ihe blows and the deep- ness of the convex or hollow patches betwixt the slabs. So long as there exists an exit or passage for this scoria, all is well; but, as generally happens, some portion of this scoria lurks behind after all chance of escape is removed by the welding of the exterior portion of the surfaces of the slabs. The result of this is, that we have to a certainty a defect greater or less in amount, according to the quantity or sur- face over which the inclosed scoria extends: once such scoria is shut up between the surface of the slabs, no amount of after ham- mering will ever expel it, but on the contr
Size: 1435px × 1740px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1800, booksubjectarchitecture, booksubjectscience
