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pantograph    
n. 缩图器;电杆架

缩图器;电杆架

pantograph
缩图仪;缩图器

pantograph
缩图器

pantograph
n 1: mechanical device used to copy a figure or plan on a
different scale

Pantograph \Pan"to*graph\, n. [Panto- -graph: cf. F.
pantographe.]
An instrument for copying plans, maps, and other drawings, on
the same, or on a reduced or an enlarged, scale. [Written
also {pantagraph}, and incorrectly {pentagraph}.]
[1913 Webster]

2. An electrical conducting device consisting of a
collapsible frame resembling a pantograph[1], connected to
the top of an electrically-powered vehicle such as a
trolley, and used to conduct electrical current between
the vehicle and an overhead electric wire, which supplies
the power to the vehicle. The variable height of the
pantograph ensures that it can move to follow variations
in the height of the overhead wires, and thus make
constant contact with the wires.
[PJC]

{Skew pantograph}, a kind of pantograph for drawing a copy
which is inclined with respect to the original figure; --
also called {plagiograph}.
[1913 Webster] Pantographic


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  • Pantograph - Wikipedia
    A pantograph (from Greek παντ- 'all, every' and γραφ- 'to write', from its original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen or stylus, in tracing an image, produces mimic movements recorded by a second pen
  • Pantographs | National Museum of American History
    The pantograph is a drawing instrument used to enlarge and reduce figures It was devised by the Jesuit astronomer and mathematician Christoph Scheiner in 1603 and described by him in a 1631 publication
  • Amazon. com: Pantograph
    Price and other details may vary based on product size and color Need help?
  • What Is a Pantograph? Uses, History, and How It Works
    A pantograph is a mechanical device built from linked bars arranged in a parallelogram shape, originally designed to copy and scale drawings The term also refers to the spring-loaded arm on top of electric trains that collects power from overhead wires
  • PANTOGRAPH Definition Meaning - Merriam-Webster
    The meaning of PANTOGRAPH is an instrument for copying something (such as a map) on a predetermined scale consisting of four light rigid bars jointed in parallelogram form; also : any of various extensible devices of similar construction (as for use as brackets or gates)
  • Pantograph | Drawing, Tracing, Copying | Britannica
    The links in a pantograph may be arranged in other ways, but they all contain a parallelogram Pantographs are used for reducing or enlarging engineering drawings and maps and for guiding cutting tools over complex paths Artists specializing in miniatures use pantographs to achieve greater detail
  • How a Pantograph Works - Clark Science Center
    A pantograph has one fixed point O (the “Origin”), and two special points P and Q It has the property that Q traces an enlarged, or "scale" copy of whatever P traces
  • What is pantograph mechanism? - howengineeringworks. com
    A pantograph mechanism is a type of linkage mechanism used to copy, enlarge, or reduce a figure or motion in the same proportion It consists of a system of bars connected in a parallelogram form, allowing the movement of one point to be exactly reproduced by another point at a fixed scale
  • pantograph - Wiktionary, the free dictionary
    Noun pantograph (plural pantographs) A mechanical linkage based on parallelograms causing two objects to move in parallel; notably as a drawing aid
  • The Pantograph in Context - Circuitous Root
    However, while pantographs vary widely in form and application, not everything which is called a pantograph really is a pantograph The term was applied to the apparatus used to transmit electrical power from overhead lines to streetcars or railways





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