ated by a cam, to which a ratchet-wheel is at- above. a distance of 7 fect only, the radius of the speeds R! and tlis to be9:0678 or 9 1-14 inches, or their diameter one- tached, so that the ring may be gradually expanded with- Or +O) out opening the piston. seventh of an inch larger than would be… … Fig] Fig.2 Fig.3 R. RL R32. R3. Ri A is the head of a piston to which the hab, B, is at- tached; and the follower, C, is secured on it by means of 12 10:33 9:05 7:22 6 inches. screws, a, in the usual mapner. The packing consists r. rl, r, r3, rd, of two metallic rings, D, which are cut open on one…
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