of Philadel- for freeing them from it, which is better seen end of such movement will come in contact of the pump. The shell, A, is notched at n to phia, Pa., have invented and patented an im- in Fig. 2. On one of the axles a small toothed proved method of turning the rods in nail RACE & MATTHEWS'… … projection, h, and working up and down in being fitted so as to oscillate. C is a hollow piston attached to, and forming part of the suitable bearings ; there is also a spring, I, which has a tendency to force the bar, K, up shaft, B. The extremity of the piston, C, and keep it from the bricks.…
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