a horizontal supporting member; esp. †(a) a ridge piece in a roof (obsolete); (b) a horizontal supporting member in a windmill; (c) a horizontal…
单词 | θ211936 |
释义 | society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > prop or support (28) crown tree1449 a horizontal supporting member; esp. †(a) a ridge piece in a roof (obsolete); (b) a horizontal supporting member in a windmill; (c) a horizontal… punch1462 Mining. A post placed so as to support the roof in a mine, a pit prop. Cf. puncheon, n.1 4 punch-prop n. at compounds 2. prop1613 Mining. A length of timber placed upright to support the roof of a mine; = pit-prop n. at pit, n.1 compounds 2. slider1653 Mining. (See quot. 1828.) sole1653 Mining. The bottom or floor of a vein, level, or working. yoking1653 English regional (Derbyshire). Mining. Now historical. Each of the (typically four) pieces of wood joined together to support the stowces… stow-blade1681 Each of two upright pieces of wood, a foot in length, connected at the top with the sole-trees of a stow or stowce. pit-bar1708 a piece of timber used to support the sides of a mine shaft. fork1747 A stake, staff, or stick with a forked end. Mining (Derbyshire): see quot. 1881. head tree1747 Mining and Building. Originally: a horizontal supporting beam placed on top of one or more vertical props or posts. In later use also: a… studdle1758 Mining. A vertical prop or support in a mine shaft, esp. each of those supporting the corners of a set (set, n.2 12b) against the ground. Now rare. lock piece1778 Mining. A prop to support the roof of a working. Now historical and rare. pit-prop1794 a length of timber used to support the roof of a mine or mine shaft. puncheon1815 A short upright piece of timber in a wooden framing to provide stiffening or support; a supporting post, spec. a post supporting the roof in a coal… stow-fork1824 Comb. stow-fork = stow-blade, n. plank tubbing1839 the action of lining the walls of a shaft with vertical planking; planking used for this purpose. sprag1841 Mining. A prop used to support the coal or roof during the working of a seam. gib1847 Mining. A piece of wood used to support the roof of a coalmine. chock1853 Mining. Originally: a block of wood used to support the roof of a mine; spec. one of a set of thick planks stacked crosswise in layers to form a… Tom1858 Australian and New Zealand. A timber prop or brace used to secure something (e.g. part of a mine or building, or loose cargo), esp. by being wedged… bratticing1866 Brattice-work in a coal-pit. pack1867 A packed or compacted mass, in various contexts. Mining. A wall or pillar to support the roof of a mine, built by packing rough stone, waste, or… breastboard1877 Mining. Any of a number of boards or planks placed across a mine face to prevent loose material from falling back into the tunnel. Usually in plural. brattice1881 In form brattice (dialect also brattish): A partition, generally of deal. A lining of timber to a shaft or a headway in a pit. wall-plate1881 Mining. (See quots.) strap1883 Mining. (See quots.) stretcher1883 A bar serving as a stay or brace. Mining. A prop or sprag. Subcategories:— part of (1) |
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