. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . DRILLS, ROCK. 191. Ingersoll Rock-Drill. 192 DRILLS, ROCK. flange it will also occupy R. This being connected with D, and D being closed by the lowerpiston-head, there is here no outlet. Now, R being connected with D, and as D is now opento the piston exhaust-chamber, the space behind the valve-flange at H is free to the exhaust-and hence the steam pressure in R holds the valve close at R so long as D is open to the

---

Size: 1251px × 1997px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering