ted in the fire-box, is fast giving place to more ances for the direct power of muscle. The grand complicated, scientific, and effective forms. The im- into this annular chamber by means of these ports. object is to contrive machines, which, managed by one or two men, will do the labor of dozens… … the bottom of the fire- thickness of its plate and TANGER’S STEAM BOILER. box. its width, rather than for its temper and perféct’straightness.. In the one case This pipe is provided with a ‘set of nipples N, cured and held in close contact: by the bolt, B, the | the workman moves back and forth a…
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