单词 | saddle joint |
释义 | saddle jointn. 1. Engineering. A joint between metal pipes in which one pipe is cut to fit around the other. Also: a metal joint, used chiefly with sheet metal, in which the edge of one member is bent over the upturned edge of the next. ΚΠ 1852 T. Antisell Hand-bk. Useful Arts in Putnam's Home Cycl. III. 205/2 A series of tubes connected by saddle joints are in the box [sc. in a gas condenser]. 1864 Amer. Railway Times 9 July 223/2 A single piece of wrought iron, which was joined to the frame by a kind of saddle joint. 1876 E. H. Knight Amer. Mech. Dict. (new ed.) III. 2011/2 Saddle-joint, a form of joint for sheet-metal... One portion overlaps and straddles the vertical edge of the next. 1909 T. H. Russell & C. P. Root Amer. Cycl. of Automobile V. 1459 Saddle joint, in sheet metal working, a joint formed by bending the edge of one sheet over the turned-up edge of another. 2003 Welding Basics: Introd. to Pract. & Ornamental Welding Gloss. 139 Saddle joint, a joint between round tubes where one tube has been cut to fit around the other. 2. Anatomy and Zoology. A bone joint in which the articulating surfaces are convex in one direction and concave in the other, allowing movement in two axes. ΘΚΠ the world > life > the body > structural parts > joint > [noun] lithc1000 jointc1290 jointure1382 conjunctionc1400 article?a1425 juncture?a1500 linka1547 articulation1578 flexion1607 coarticulation1615 de-articulation1615 syntax1615 internodium1653 saddle joint1867 1867 Philos. Trans. (Royal Soc.) 157 351 In the Lemuroidea, however, there is a true and decided saddle joint. 1937 Amer. Jrnl. Surg. 38 540/2 The thumb is freely movable in its saddle joint on the greater multangular. 1958 Trans. Kansas Acad. Sci. 61 90 The South American [turtle] Podocnemis retained the primitive skull and bursae but evolved small mesoplastra and curious saddle joints of the cervical vertebrae. 1995 J. H. Schwartz Skeleton Keys i. 6/2 There is only one saddle joint (also called a sellar joint) in the human skeleton: the carpo-metacarpal joint of the pollex (i.e. the joint at the base of the thumb). 3. a. Masonry. A joint in which the ends of adjoining blocks are shaped to direct rainwater away from the mortar in the joint. ΘΚΠ society > occupation and work > industry > building or constructing > building or providing with specific parts > specific parts built or constructed > [noun] > joint > types of gemew?a1400 match-joint1683 matched joint1688 joggle1703 water joint1810 pin-joint1835 shackle-joint1837 screw shackle1847 through-joint1851 joggling1858 leg joint1858 splice1875 bed-joint1876 butting joint1887 saddle joint1901 contraction joint1909 1901 R. Sturgis Dict. Archit. II. 655 Saddle Joint. In a weathered course of masonry,..a joint formed between two adjoining stones whose ends are cut higher than the surface of the weathering between. The projections at the ends are usually sloped or rounded away from the joint..so as to shed water from the mortar. 1997 L. F. Webster Wiley Dict. Civil Engin. & Constr. 494/2 Saddle joint, saddle-shaped joint between masonry blocks in a cornice that throws water away from the joint. Also called Water joint. b. Woodworking. A joint used to join an upright timber to a horizontal one, formed by cutting a notch in one timber to receive a corresponding projection or tenon cut in the other. ΘΚΠ society > occupation and work > industry > building or constructing > constructing or working with wood > [noun] > wooden structures or wooden parts of > means of fitting together > types of joint indenting1382 scarf1497 swallowtail1548 dovetail1565 mortise-piece1577 tenon and mortise1610 culver-tail1616 mortise and tenon1631 finger joint1657 breaking joint1663 meeting1663 mitre1665 scarfing1671 heading joint1773 dovetail-joint1776 butting joint1803 bevel-joint1823 lap-joint1823 lapped mitre1825 mitre dovetail1847 bridle joint1860 mortise1875 sypher-joint1875 keyed mitre1876 tongue-and-groove1882 saddle joint1948 1948 T. Corkhill Gloss. Wood 472 Saddle joint, a joint to provide a good bearing surface for the foot of a vertical timber and to prevent lateral movement. 1990 Britannia 21 150 The most variation [in the construction of Roman timber buildings] was seen in the attachment of tiebacks, where half-laps, saddle-joints, and both full and half-dovetail laps were used. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < n.1852 |
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