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  2. Reducing machine - Wikipedia

    en.wikipedia.org/wiki/Reducing_Machine

    A reducing machine was a type of pantograph lathe used until the 21st century to manufacture coin dies. Prior to the machine's introduction, designs were cut by hand into metal dies by a specialist engraver. The reducing machine changed this by allowing artists to create designs on a larger surface area and then have them scaled down and cut ...

  3. Pantograph - Wikipedia

    en.wikipedia.org/wiki/Pantograph

    Drafting pantograph in use Pantograph used for scaling a picture. The red shape is traced and enlarged. Pantograph 3d rendering. A pantograph (from Greek παντ- 'all, every' and γραφ- 'to write', from their original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical ...

  4. Victor Janvier - Wikipedia

    en.wikipedia.org/wiki/Victor_Janvier

    Victor Janvier (c. 1851–1911) was a French sculptor and engraver notable for inventing the Janvier Reducing Machine, a type of lathe which improved the die making process within mints. [ 1 ] [ 2 ] [ 3 ]

  5. List of duplicating processes - Wikipedia

    en.wikipedia.org/wiki/List_of_duplicating_processes

    Pantograph, manual device for making drawn copies without tracing, can also enlarge or reduce; Printmaking, which includes engraving and etching. Relief printing including woodcut; Intaglio (printmaking) or copperplate engraving; Planographic printing; Line engraving; 1917 office with a "Multigraph" duplicating machine at lower right. Printing ...

  6. Waterman Ormsby - Wikipedia

    en.wikipedia.org/wiki/Waterman_Ormsby

    Ormsby was an excellent line engraver and was called upon for a great deal of work for bank notes were in wide use by the Government at the time of the Civil War.He designed the five-dollar note, intended to prevent counterfeiting and was the author of several pamphlets, including, "Cycloidal Configurations" or the Harvest of Counterfeiture, and a volume on paper-money engraving entitled, A ...

  7. Punchcutting - Wikipedia

    en.wikipedia.org/wiki/Punchcutting

    Pantograph engraving is a technology where a cutting machine is controlled by hand movements and allows type to be cut from large working drawings. It was initially introduced to printing to cut wood type used for posters and headlines. [ 2 ]

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