the same time slides the central spur parts were of metal except the screw and spring clips. wheel, Fig. 8, attached to the driving shaft,into gear with machinery. And what can be simpler than the locomotive boiler as it two other gears, which, through their crank shafts operate the pumps. When the… … which can be thoroughly depended upon in large quantities, and there are fireboxes of a somewhat kindred material— Howell’s homogeneous metal—which have perfectly with- stood nine years’ use on the Scottish Central Railway. In all this, however, there is no new principle, and the most that The…
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