. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. MANUFACTURING LEAD-COVERED TELEPHONE CABLE 337 The pressure for operating these presses is furnished by a hydrauHc pump, pumping water at six thousand pounds pressure per square. Fig. 13—Electric tractor and trailer for handling cable reels. inch. Presses were formerly connected to four plunger vertical type pumps, but it was found that more water could be used with the large. Please note that these images are extracted from scanned page images that may have been digit
. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. MANUFACTURING LEAD-COVERED TELEPHONE CABLE 337 The pressure for operating these presses is furnished by a hydrauHc pump, pumping water at six thousand pounds pressure per square. Fig. 13—Electric tractor and trailer for handling cable reels. inch. Presses were formerly connected to four plunger vertical type pumps, but it was found that more water could be used with the large. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Telephone and Telegraph Company. [Short Hills, N. J. , etc. , American Telephone and Telegraph Co. ]
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Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
