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typewriter,instrument for producing by manual operation characters similar to those of printing. Corresponding to each key on the instrument's keyboard is a steel type. Activated through a series of levers or an electronic impulse when its key is pressed, the type strikes the paper in the machine through an inked ribbon; the carriage holding the paper then automatically moves, providing space for the next character. The first recorded patent for a typewriter was taken out in England by Henry Mill in 1714. In the United States the typographer of William Austin Burt, patented in 1829, was the first practical writing machine. An improved French machine appeared in 1833. The early models were chiefly for the blind and produced embossed writing. A practical commercial machine invented in the United States in 1867 by Christopher Latham Sholes and his associates, Carlos Glidden and Samuel Soulé, was manufactured by Philo Remington and placed on the market in 1874. This early model had only capital letters. A shift-key model, permitting change of case, appeared in 1878. The electric typewriter, which allowed greater speed with less effort than a manual machine, came into use c.1935. The Selectric, introduced by International Business Machines (IBM) in 1961, replaced the usual type bars with a metal globe that moved across the surface of a stationary paper holder, replacing the moving carriage of the traditional typewriter; interchangeable globes provided a variety of typefaces and special symbols, allowing a single typewriter to be utilized for scientific writing, foreign languages, or other uses. The globe was later replaced by the daisy wheel, which spins the proper type into position. These innovations have allowed typewriters to become versatile printing instruments, capable of storing entire documents before printing, identifying and correcting errors as they arise, and connecting to computers. Nonetheless, the typewriter was almost completely superseded by personal computerspersonal computer
(PC), small but powerful computer primarily used in an office or home without the need to be connected to a larger computer. PCs evolved after the development of the microprocessor made possible the hobby-computer movement of the late 1970s, when some computers
..... Click the link for more information. using word-processingword processing,
use of a computer program or a dedicated hardware and software package to write, edit, format, and print a document. Text is most commonly entered using a keyboard similar to a typewriter's, although handwritten input (see pen-based computer) and audio input (as
..... Click the link for more information. software and printers by the mid-1990s; the machines are still used for specialized printing functions. Other forms of typewriters included the stock ticker, which recorded its message on a narrow strip of paper, and the teletypewriter, which transmitted typing over an electric circuit such as the telephone or telegraph.
a device for printing texts by making standard representations of symbols such as letters and numbers. In most typewriters, the printed character is produced when the paper is struck through an inked ribbon by a type-bar or spherical or cylindrical head covered with raised (convex) characters. The maximum typing speed, which is limited by human physical capabilities, ranges from seven to ten characters per second.
Typewriters are classified as office machines. There are several kinds of typewriters, categorized according to their purpose: travel, portable, office, composing, and special typewriters. Used primarily by journalists, travel typewriters are small and lightweight. Portable typewriters, which are larger than travel typewriters, are designed for general use. Office typewriters are used for high-volume, professional typing of texts and tables. Unlike office typewriters, composing typewriters have a typeface that resembles print, and they are equipped with variable spacing and with a mechanism that widens or compresses the spaces between letters. Composing typewriters are used to prepare texts for duplication by small-job printing equipment. Special typewriters include machines with several typefaces—single-keyboard machines with changeable typefaces (for example, the Russian, Latin, or Greek alphabet) and double-keyboard machines with basic and supplementary (interchangeable) typefaces. Also among the special typewriters are flat-bed machines for printing characters on drawings or texts in already bound documents. In addition, there are typewriters for printing special symbols—for example, stylized typefaces for computers, musical symbols, and the raised or embossed characters of the Braille alphabet for the blind. Stenographic machines are also classified as special typewriters.
The principal components of the typewriter are the printing mechanism and the keyboard. Depending on how they are powered, typewriters are classified as manual (mechanical) or electric. The printing mechanism is operated by means of a keyboard equipped with keys for letters, numbers, punctuation marks, mathematical symbols (+, %, =), and auxiliary characters (brackets, fractions, and hyphen, for example), as well as keys that control the register (the shift key), the tabulator, and the shifting of the carriage (left and right). The most frequently used keys are usually placed in the center of the keyboard. The number of keys and the kind of characters depend on the purpose of the machine. Thus, a typewriter for Braille includes six to ten characters; a Russian- or Latin-alphabet typewriter, 42–46 characters; and a Japanese or Chinese typewriter, several thousand ideographs.
The typewriter has a carriage with a roller (platen) to set and secure the paper, a spacing mechanism to shift the carriage or printing head the width of a single character, a mechanism for shifting from lowercase to uppercase (and vice versa), and a mechanism for moving the ribbon. The tabulator, which makes it possible to move the carriage automatically to certain points relative to the printing mechanism, is useful in typing tables.
As early as the 16th century, there were attempts to mechanize writing. The first patent for a writing machine was issued to the English inventor H. Mill in 1714, but the first writing machine was built in 1867 by C. L. Sholes, S. W. Soule, and C. Glidden (USA). On the basis of this machine, the Remington Company (USA) began the batch production of typewriters in 1873. In 1903 the Underwood Company (USA) developed a typewriter that was highly convenient for production and use— the prototype of the modern typewriter. The first Soviet typewriters, the Ianalif’s, went into batch production in 1928. During the 1960’s and 1970’s several hundred models of manual and electric typewriters of various brands were in production all over the world: in the USSR, the Moskva, Ukraina, Bashkiriia, Gorizont, and MPK-1; in the German Democratic Republic, the Optima, Optima-electrik, and Erika; in Czechoslovakia, the Konsul; in Bulgaria, the Maritsa; in the USA, Remington, Underwood, IBM, and Smith-Corona; in Italy, Olivetti; in Switzerland, Facit; and in the Federal Republic of Germany, Olympia, Adler, and Triumph. Automatic typewriters were developed in the 1950’s.
Improvements in typewriters, which were stimulated primarily by a desire to increase the labor productivity of typists and improve the quality of typing, took a new direction with the development of computer technology. Many electronic computers are equipped with data input and output devices based on typewriters. World production of typewriters is growing steadily, with a trend toward the manufacture of an increasing proportion of electric typewriters.
REFERENCESAlferov, A., and T. Shakirov. Technicheskie sredstva zapisi informatsii. Frunze, 1971.
Burtsev, V. V., and E. B. Kaplan. Sredstva orgtekhniki (spravochnikkatalog). Moscow, 1971.
Alferov, A. V., I. S. Reznik, and V. G. Shorin. Orgatekhnika. Moscow, 1973.
A. V. ALFEROV and V. G. SHORIN
typewriterA mechanical or electromechanical device that is used to print text on a paper document. Although there were various typewriter-like devices created throughout the 1800s, the first typewriters with a carriage that moved the paper to the next character location began to emerge in the 1870s. The first commercially successful machine was the "Sholes & Glidden Type Writer" made by the Remington Arms company in Ilion, NY from 1874 to 1878. The QWERTY keyboard was created in that same time frame (see QWERTY keyboard).
Electric and Selectric
Greatly reducing the effort to produce a typewritten page, electric typewriters were introduced by Remington and IBM in the 1920s and 1930s. However, they still used the horizontal moving carriage. In 1961, IBM revolutionized the typewriter world with its golf ball-like type wheel (see Selectric typewriter). For an enchanting collection of old typewriters, visit www.typewritermuseum.org.
|High Tech in the 1890s!|
|Considered the first portable typewriter, George Blickensderfer created this beauty in 1893. (Equipment courtesy of Dorothy Hearn.)|
|The Selectric "Golf" Ball|
|With its revolutionary type ball, IBM Selectric typewriters were office workhorses for decades. See Selectric typewriter.|
|Going Strong in the 2010s|
|This photo was taken in 2012 at the Mesa Typewriter Exchange in Mesa, Arizona. Not only are people still having typewriters repaired, but some young adults are actually purchasing them to write on. (Image courtesy of Mesa Typewriter Exchange.)|