OIL JET POWER
The destructive potentialities of high pressure hydraulic machinery were mentioned by Mr 1. (x. Beck, engineer to the Public Works Department for Canterbury, in a lunclicon address to the Ghristchurcli Businessmen's Club.
Mr Beck was describing the hydraulic jacks Avhich will drive the huge steel tunnelling shields through the glacial moraine at Lake T'ekapo. These jacks would operate at a pressure of 75001b to the square inch, not a particularly high pressure in hydraulic engineering, he said. Yet if the oil from one of these jacks was permitted to pass through a pin-hole it would emerge at 600 miles an hour, and if 10 men stood in a line in the path of the jet it would pass through thme like a steel wire. These huge forces were readily controlled and Hydraulic machinery carried out, safely and easily, some of the most formidable engineeiing tasks.
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Bay of Plenty Beacon, Volume 3, Issue 362, 24 January 1941, Page 3
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148OIL JET POWER Bay of Plenty Beacon, Volume 3, Issue 362, 24 January 1941, Page 3
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