pantograph

Definitions

  • WordNet 3.6
    • n pantograph mechanical device used to copy a figure or plan on a different scale
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Webster's Revised Unabridged Dictionary
    • Pantograph 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.
    • n Pantograph An instrument for copying plans, maps, and other drawings, on the same, or on a reduced or an enlarged, scale.
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Century Dictionary and Cyclopedia
    • n pantograph An instrument for the mechanical copying of engravings, diagrams, plans, etc., either upon the same scale or upon a reduced or an enlarged scale. It consists of four perforated limbs or rules, a, b, d, e, of wood or metal, arranged in pairs, jointed together at the crossing, the two pairs being also jointed together at c and h. The perforations are made at uniform distances, in accordance with a scale of measurement. The pivoted joints by which the two pairs are connected are constant, while the joints between the intersecting limbs of each pair may be shifted by inserting the joint-pins f f in different holes in each limb. By changing the pins the copy may be reproduced on any scale either larger or smaller than the original, or it may be kept of the same size, the proportion being indicated for convenience by figures on the limbs (not shown in the cut). In use, the end pivot i is fixed to the table, the pivot c sliding on the plane surface according to the impulse given to it. The pivot g carries a tracing-point which is passed over the original lines to be reproduced, and the pivot h carries a pencil or needle which traces the copy or pricks it in the paper. The pantograph is used for transferring patterns to calico-printing cylinders, in some processes of wood-carving, in making wooden type, etc.
    • n pantograph A device made of pairs of perforated arms joined together and used for reducing the cross-head motion of an engine for the purpose of indicating; a reducing motion used in taking indicator-cards of engines and working on the reducing principle of the ordinary pantograph.
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Chambers's Twentieth Century Dictionary
    • n Pantograph pan′tō-graf an instrument for copying drawings, plans, &c. on the same, or a different, scale from the original
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Etymology

Webster's Revised Unabridged Dictionary
Panto-, + -graph,: cf. F. pantographe,
Chambers's Twentieth Century Dictionary
Gr. pan, all, graphein, to write.

Usage

In literature:

Now take these two pantographs of B's autograph, marked five months and seven months.
"The Tragedy of Pudd'nhead Wilson" by Mark Twain (Samuel Clemens)
PANTOGRAPH, the name given to a contrivance for copying a drawing or a design on an enlarged or a reduced scale.
"The Nuttall Encyclopaedia" by Edited by Rev. James Wood
By moving a pantograph control, Tom was able to manipulate the claws like a hand with fingers.
"Tom Swift and The Visitor from Planet X" by Victor Appleton
Luke moved the pantograph pointer, again and again, until it touched Weaver's robed body.
"The Worshippers" by Damon Francis Knight
One machine, called the pantograph or engraving machine, reproduces engravings in all metals and many shapes from patterns.
"The New Gresham Encyclopedia" by Various
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In news:

Alstom's Prima II locomotive, set in a standard configuration and pulling cars with a total load of 950T, entered the Tunnel from the French side at 10:20 pm and proceeded to perform traction, braking and pantograph tests.
Eastbound train 209 was disabled with a damaged pantograph east of East Chicago about 5 pm, causing cancellations of at least six trains and delays on all service into the evening.
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