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Letterpress printing (via printing press) Gelatin methods (also indirect method) Hectograph. Collography, autocopyist. Chromograph, Copygraph, Polygraph. Flexography. Spirit duplicator (also Rexograph, Ditto machine, Banda machine, or Roneo) Lithographic processes. Transfer lithography.
Using letter copying presses, copies could be made up to twenty-four hours after a letter was written, though copies made within a few hours were best. A copying clerk would begin by counting the number of master letters to be written during the next few hours and by preparing the copying book. Suppose the clerk wanted to copy 20 one-page letters.
A Polygraph is a duplicating device that produces a copy of a piece of writing simultaneously with the creation of the original, using pens and ink. Patented by John Isaac Hawkins on May 17, 1803, it was most famously used by the third U.S. president, Thomas Jefferson, who acquired his first polygraph in 1804 and later suggested improvements to ...
A mimeograph machine (often abbreviated to mimeo, sometimes called a stencil duplicator or stencil machine) was a low-cost duplicating machine that worked by forcing ink through a stencil onto paper. [1] The process was called mimeography, and a copy made by the process was a mimeograph. Mimeographs, along with spirit duplicators and ...
Print/export Download as PDF; Printable version; Help The category is for articles related to template and theme generators. ... Template generator This page was last ...
Template generator. Template or Template generating software is a tool used for developing website, email, and document templates without manually formatting or writing computer programming language code. Such tools provide a GUI (graphical user interface) for design purposes, and produce the source code or formatted structure for websites ...
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Newman's Energy Machine was a DC motor which the inventor, Joseph Newman, claimed to produce mechanical power exceeding the electrical power being supplied to it. In 1979, Newman attempted to patent the device, but it was rejected by the United States Patent Office as being a perpetual motion machine . [ 1 ]