The Civil engineer and architect's journal, scientific and railway gazette . the steam ports; and the line ed both the travel of the slide andstroke of the piston. Tlien, supposing c/t to represent the leadof the slide, ai will be the position of the eccentric when that ofthe crank is a e; the slide occupying the position shown iu fig. 10,and the piston being at the top of its downward Fig. 10. Fig. 11. Fig. When the eccentric reaches the point k, the port cd will be fullyclosed (as shown in fig. 11), and the piston will have descended to/, the arc e m being equal to the arc i /.-. Ag
The Civil engineer and architect's journal, scientific and railway gazette . the steam ports; and the line ed both the travel of the slide andstroke of the piston. Tlien, supposing c/t to represent the leadof the slide, ai will be the position of the eccentric when that ofthe crank is a e; the slide occupying the position shown iu fig. 10,and the piston being at the top of its downward Fig. 10. Fig. 11. Fig. When the eccentric reaches the point k, the port cd will be fullyclosed (as shown in fig. 11), and the piston will have descended to/, the arc e m being equal to the arc i /.-. Again,—when the ecxren-tric arrives at n, the .slide being then brought into the positionfig. 12, exhaustion commences from above the piston, which hasdescended to o; the arc e to p being equal to the arc i U n. >> hen 38 THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. I Febrvarv, -To find the point of the stroke at which steam will he cut the eccentric arrives at 7, the port t e begins to open for tlic ad-mission of steam beneatli tlie piston (see fig. 13), which has thendescended to r ; the arc c m .v heinff equal to the arc )/r 7. ^^hentlie eccentric lias readied tlie ]i ewill be open to the extent of the lead A A, equal to c A, and thepiston will have completed its descent. Steam continues to enter the port be during the ascent of thepiston
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