单词 | pantograph |
释义 | pantographn. 1. An instrument for the mechanical copying of a plan, diagram, pattern, etc., esp. on a different scale, typically with two drawing points connected by an adjustable parallelogram of jointed rods (cf. parallelogram n. 2). Also: any of various similar mechanisms for automatically guiding or scaling the motion of a cutter, stylus, etc. ΘΚΠ society > communication > representation > a plastic or graphic representation > graphic representation > drawing plans or diagrams > [noun] > drawing instruments > for enlarging or reducing parallelogramc1656 pantograph1723 pantographer1750 reducing compass1778 tracer1812 eidograph1828 reducing machine1848 reduction compass1853 planigraph1877 tracing-instrument1877 society > occupation and work > equipment > machine > machines which impart power > engine > steam engine > [noun] > device for recording pressure pantograph1723 1723 E. Stone tr. N. Bion Constr. & Principal Uses Math. Instruments 86 Of the Pentograph, or Parallelogram. 1728 E. Chambers Cycl. Pentagraph, an Instrument whereby Designs, Prints, &c. of any Kind, may be copied in any Proportion. 1766 B. Martin New Art Surv. by Goniometer 18 There remains therefore only the Pantagraph to be described. 1803 Hawkins Brit. Patent 2735 Attaching..pencils, etc. to a double pantograph. 1844 Mechanics' Mag. 40 92 The Eidograph,..invented about the year 1821..is considered superior in many respects to the Pentograph. 1874 Notices Proc. Royal Inst. Great Brit. 7 184 The other pole will then describe a curve precisely similar in shape, but drawn on a different scale, as in any ordinary pantigraph. 1879 G. B. Prescott Speaking Telephone (new ed.) 303 By using a form of pantograph, Prof. Mayer has obtained magnified tracings on smoked glass. 1895 Oracle Encycl. I. 585/2 Patterns are also etched on the rollers with nitric acid, by lines cut..by means of Rigby's pentagraph machine. 1897 Sketch 26 May 181/2 The pantagrapher follows, or traces, with his pantagraph, the course of the stitches in the sketch of the pattern to be produced. 1939 Geogr. Jrnl. 94 218 Traced from the mosaic..and then transferred by pantagraph to the map. 1947 A. O. R. Johnson & J. L. Daniels in P. I. Smith Pract. Plastics xiv. 191/2 In the case of the pantograph milling machines, these follow a prepared master, and the resulting impression can be either a reduction or an enlargement of the master. 1967 Times Rev. Industry Mar. 100/2 (advt.) The Diaform is a pantograph of 10:1 or 5:1 reduction which transfers the required form from a sheet metal template to a grinding wheel. 1994 Lee Valley Gift Catal. Christmas '94 (Lee Valley Tools, Canada) 28/1 A pantograph is used to change the scale of drawings; this one, with 15″ wooden arms, can be used to enlarge any plane figure up to ten times its size. 2. A jointed, self-adjusting framework on the top of an electric vehicle for conveying the current from overhead wires. ΘΚΠ society > travel > rail travel > rolling stock > [noun] > locomotive > parts of electric railway traction unit guard-brush1888 nose suspension1894 nose1907 pantograph1907 dead man's handle1908 the world > matter > physics > electromagnetic radiation > electricity > transmission of electricity, conduction > conductor used in transport > [noun] > conductor of current from wires trolley1891 trolley-wheel1891 bow trolley1901 pantograph1907 bow1909 1907 F. H. Davies Electr. Power xxiii. 269 The..collecting gear is that known as the pantograph, and the object..is to permit of high speed running and reversal of direction without any corresponding adjustment of the gear. 1920 Glasgow Herald 23 Sept. 7 Electric locomotives can..be fitted..with pantograph collectors. 1970 Daily Mail 8 Jan. 1/4 The pantograph..appears to have jumped on top of the wire instead of running beneath it. 1993 Mod. Railways July 419/3 Under normal operation on 25kV lines the pantograph will be raised on both power cars. 1995 Guardian 13 Apr. i. 24/4 Power supplies were shut down to allow engineers to cut away the pantograph connector from the overhead wires. 3. Any of various other adjustable supporting or extending mechanisms in the form of a diamond-shaped trellis or lazy tongs. Frequently attributive. ΚΠ 1942 Archit. Rev. 92 46 (caption) The early tube carriages of 1906, seqq., had pantograph doors at both ends. 1969 Science 16 May 776 The scoop was mounted on a pantograph arm that could be extended about 1.5 meters or retracted close to the spacecraft by a motor drive. 1982 A. Road Doctor Who: Making of TV Series 40/2 More than 200 lights hang from the high ceiling on latticed supports known as pantographs. They hover at all angles. This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022). pantographv. transitive. To copy or change the scale of by means of a pantograph; (also) to mark, stamp, imprint, etc., with something copied by means of a pantograph. ΘΚΠ society > communication > representation > a plastic or graphic representation > graphic representation > drawing plans or diagrams > make plan or diagram of [verb (transitive)] > drawing equipment > enlarge or reduce pantograph1934 1934 Webster's New Internat. Dict. Eng. Lang. Pantograph, to copy with or to function by the use of a pantograph. 1936 J. Agate in Sunday Times 12 Apr. 5/1 Can a drop-earring be pantographed to chandelier-size without loss of exquisiteness? 1982 Washington Post (Nexis) 17 Sept. (Weekend section) 55 Crank arms pantographed with the Bianchi logo. This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022). < n.1723v.1934 |
随便看 |
|
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。