pipe jackn.
/ˈpʌɪp dʒak/, U.S. /ˈpaɪp ˌdʒæk/ Engineering.
Originally: a hand-operated mechanical device for laying an underground pipe by pushing it through the ground from one pit to the next; (later also) a hydraulically-operated machine performing this function. Also: underground pipe laid by this method.
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society > occupation and work > equipment > other specific types of equipment > [noun] > other tools and equipment
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1909 Cent. Dict. Suppl. Pipe-jack, a jack adapted to the work of driving an iron pipe in a horizontal direction through the soil.
1911 U.S. Patent 982,023 2/1 This invention relates to a new and improved pipe laying mechanism in the nature of a jack, adapted to force a pipe through the soil without digging a trench.]
1950 Denton (Maryland) Jrnl. 8 Dec. 6/5 (advt.) Public Sale... One pipe jack, 1 set of horse clippers; 1 grindstone.
1984 Financial Times 12 Mar. i. 22/3 The Dartford project is the second phase of the central area foul water re-drainage scheme and includes over 500 metres of 1050mm pipe jack.
1991 Water Bull. 6 Sept. 16/1 The 5.2km Burslem to Strongford Link Sewer..consists of 1.9km of hand driven tunnel, 350m of pipejack and 3k of open cut works.
1995 Hill City (Kansas) Times 23 Nov. 6/2 (advt.) Tractor, Loader & Farm Equip... Lg. bolt cutters; hammers; pipe jack.
2003 Liverpool Leader (Austral.) (Nexis) 24 Sept. The pipe jack was a drill-like machine which simultaneously bored a hole, laid pipes and removed the soil from the hole.
This is a new entry (OED Third Edition, June 2006; most recently modified version published online March 2022).
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n.1909