or inside of d, andthis ring is joined to the main tube, N, Fig. 3, by two thinpieces of metal, e. The openings on the sides thus producedgive an additional supply of air , determining a completemixture within the tube, N, which burns at the exit orifice.A gas lamp under the tube, N, which is… … It is also claimed that the compound rail is stronger than asolid rail of the same thickness, and that, as it has no bat-tering or bending points, the jarring so destructive both torails and rolling stock is avoided. A, in the engraving, is the timber ordinarily laid down toform the base for the…
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