. Machinery and processes of the industrial arts, and apparatus of the exact sciences. ine, above de- Fig. 28. scribed, will be understood from an examina-tion of Figs. 26, 27, and 28: A, (Fig. 26,) is the inner cylinder. B B markthe external cylinder, and O C the intermedi-ate. P is the piston just beginning to des-cend. The arrows show the openings for en-trance and discharge of water. I is theinduction pipe, and E the eduction pipe. DD are prolongations of the working cylinder,in smaller diameter, to allow it to slide for-ward and backward. The piston rod p passesthrough a stuffing-box s, a
. Machinery and processes of the industrial arts, and apparatus of the exact sciences. ine, above de- Fig. 28. scribed, will be understood from an examina-tion of Figs. 26, 27, and 28: A, (Fig. 26,) is the inner cylinder. B B markthe external cylinder, and O C the intermedi-ate. P is the piston just beginning to des-cend. The arrows show the openings for en-trance and discharge of water. I is theinduction pipe, and E the eduction pipe. DD are prolongations of the working cylinder,in smaller diameter, to allow it to slide for-ward and backward. The piston rod p passesthrough a stuffing-box s, at the end of are also stuffing boxes at t and V. Fig. 27 is a view of the engine in plan, andFig. 28 is a section through G H, in which therelation of the induction and eduction pipesto the external and intermediate cylinders is clearly shown. coques water-engine. A third form of water-engine was exhibited by Mr. A. Coque, of is also reciprocating, and its peculiarities consist in the operatingof the induction and eduction valves by means of a cam on the working. 106 PARIS UNIVERSAL EXPOSITION. shaft instead of an eccentric, in consequence of which arrangement thechange is made abruptly at the end of the stroke; and in the admissionof a small amount of air along with the water, by means of which thedanger of a hydraulic concussion is obviated. This last feature is notwithout importance, as it removes one of the greatest difficulties in theway of the successful operation of water-engines. The inventor represents that, in case of a deficient supply of water,the quantity of air admitted may be increased; for which purpose heemploys a second valve, capable of adjustment to the quantity this case, the air, which is admitted before the water, is first com-pressed 5 and it afterwards reacts by its own elasticity, so that the enginehas to some extent the double character of a water and of an air engine. The machine exhibited is in dimensions hardly more
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Keywords: ., bookcentury1800, booksubjectmachinery, booksubjectscientificappa
