s The plate is next taken to a crimping machine, can be readily reversed by a single manipulation of a rate it would take twenty years for the engine to make not shown in our illustrations, where the neces- hand-lever. the million-mile record if she was not condemned to One of the steam-chambers… … snugly down upon the upset ends of the pipe. The the fast transcontinental mails will reach this high SECTION OF THE PORTER ENGINE. amount of pipe upset at one stroke is, of course, only record within ten or twelve years. equal to the width of the squeezing tools, which A few years ago the London &…
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