The wonders of modern mechanism. A résumé of recent progress in mechanical, physical, and engineering science (1896)
Cochrane, Charles Henry, 1856- · Philadelphia J.B. Lippincott · leaf 313
h a packer at the bottom, and the[)ressure thus caused sets the well to flow-ing again. When this pressure ceases tobe effective pumping is resorted to again.This may continue for a year or more, untilthe well is exhausted, when another tor-pedo is used, and a fresh supply obtained.Few wells last…
Inventions · Mechanical engineering · Machinery
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
