lever extending upward. It is clear that by this mechanism supplied with the machine, and of the upright tubular pat- its working parts are all within the cylinder, and hence pro- the valve can be readily moved so as to admit steam as above tern, containing 56 two inch tubes, each 4 feet long. The… … ) stop. The motor thus constructed is, by a simple arrange- exclusive of bolts; and finally that it rarely requires re- The first operations in the excavation are designed to be ac- lent of cog gearing, connected with a large spur wheel on complished by the machine shown in elevation and plan in…
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