ple con-trivance. A hole is made through the centre of the piston,in which a truly formed cylindrical iron rod, called the piston-rod, is inserted and firmly fixed by a key or linch-pin. This n-rod passes through a hole made in the iron cover of thecylinder, as shown in fig. 14. The piston-rod is… … THE STEAM ENGINE. Fig. 14
Steam-engines · Steam-navigation · Locomotives
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