The book The Complete Practical Machinist: Embracing Lathe Work, Vise Work, Drills ... was written by author Rose Joshua Here you can read free online of The Complete Practical Machinist: Embracing Lathe Work, Vise Work, Drills ... book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Complete Practical Machinist: Embracing Lathe Work, Vise Work, Drills ... a good or bad book?
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Commencing, then, with the front stroke^ Digitized by Google 336 COMPLETE PRACTICAL MACHINIST. that is, the port at the front end of the cylinder, which exhausts the steam admitted through the area treated of in table No. 1, we find as follows : TABLE NO. 9. — FRONT STROKE EXHAUST. Pkton inoT«d Exhaust port opened inches. inch. IIJ iV 12 f Piston returned. i H i full. 91 fall. 91 i 10 I 11 A ll|i exhaust port closed. 12 port again taking steam. TABLE NO. 10. — BACK STROKE EXHAUST. Piston moved ...Exhaust port opened inches. inch. iij i 12 f Piston returned. i ti A full. 9J full. 10* U 11 * 11* i 11 1 } exhaust port closed. 12 port again taking steam. Comparing the exhaust opening for the front stroke of both valve travels, we see that the increased travel has given us as free an exhaust in the early part of the ex- haust, kept the exhaust port full open during one more inch of piston travel, given us a much more free exhaust Digitized by Google THE SLIDE VALVE. 337 during the latter part, and finally increased the average of exhaust opening from f to }JJ.
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