TYPEWRITER
, a See also:writing See also:machine which produces characters resembling those of See also:ordinary letterpress; the See also:term is also applied to the operator who See also:works such See also:machines
.
In 1714 a See also:British patent was granted to See also:- HENRY
- HENRY (1129-1195)
- HENRY (c. 1108-1139)
- HENRY (c. 1174–1216)
- HENRY (Fr. Henri; Span. Enrique; Ger. Heinrich; Mid. H. Ger. Heinrich and Heimrich; O.H.G. Haimi- or Heimirih, i.e. " prince, or chief of the house," from O.H.G. heim, the Eng. home, and rih, Goth. reiks; compare Lat. rex " king "—" rich," therefore " mig
- HENRY, EDWARD LAMSON (1841– )
- HENRY, JAMES (1798-1876)
- HENRY, JOSEPH (1797-1878)
- HENRY, MATTHEW (1662-1714)
- HENRY, PATRICK (1736–1799)
- HENRY, PRINCE OF BATTENBERG (1858-1896)
- HENRY, ROBERT (1718-1790)
- HENRY, VICTOR (1850– )
- HENRY, WILLIAM (1795-1836)
Henry See also:- MILL
- MILL (O. Eng. mylen, later myln, or miln, adapted from the late Lat. molina, cf. Fr. moulin, from Lat. mola, a mill, molere, to grind; from the same root, mol, is derived " meal;" the word appears in other Teutonic languages, cf. Du. molen, Ger. muhle)
- MILL, JAMES (1773-1836)
- MILL, JOHN (c. 1645–1707)
- MILL, JOHN STUART (1806-1873)
Mill, who claimed that he had brought his invention to perfection at See also:great pains and expense, for " An Artificial Machine or Method for the Impressing or Transcribing Letters, Singly or Progressively one after another as in Writing, whereby all Writing whatever may be Engrossed in See also:Paper or See also:Parchment so Neat and Exact as not to be distinguished from See also:Print "; but beyond the See also:title the patent gives no indication of the nature or construction of the machine
.
In See also:America a patent for a " typographer " was obtained by See also:- WILLIAM
- WILLIAM (1143-1214)
- WILLIAM (1227-1256)
- WILLIAM (1J33-1584)
- WILLIAM (A.S. Wilhelm, O. Norse Vilhidlmr; O. H. Ger. Willahelm, Willahalm, M. H. Ger. Willehelm, Willehalm, Mod.Ger. Wilhelm; Du. Willem; O. Fr. Villalme, Mod. Fr. Guillaume; from " will," Goth. vilja, and " helm," Goth. hilms, Old Norse hidlmr, meaning
- WILLIAM (c. 1130-C. 1190)
- WILLIAM, 13TH
William A
.
Burt in 1829, but the records of it were destroyed by a See also:fire at See also:Washington in 1836
.
The " typo-graphic machine or See also:pen " patented by X
.
Progrin, of See also:Marseilles, in 1833, was on the type-See also:bar principle, and at the See also:York See also:- MEETING (from " to meet," to come together, assemble, 0. Eng. metals ; cf. Du. moeten, Swed. mota, Goth. gamotjan, &c., derivatives of the Teut. word for a meeting, seen in O. Eng. Wit, moot, an assembly of the people; cf. witanagemot)
meeting of the British Association in 1844 a Mr Littledale showed an apparatus for the use of the See also:blind, by which the impression of a type selected from a See also:series contained in a slide could be embossed on a See also:sheet of paper
.
In the " chirographer," for which See also:American See also:patents were granted to See also:Charles Thurber in 1843 and 1845, a See also:horizontal See also:wheel carried in its periphery a series of rods each bearing a See also:letter, the wheel being rotated till
the required type was over the See also:printing point
.
The Great
See also:Exhibition of 1851 contained a machine patented by See also:Pierre
See also:Foucault, of See also:Paris, in 1849, in which a series of rods with type at their ends could be pushed down to emboss paper at the printing point to which they were arranged radially; and there was in addition the " typograph " of William See also:Hughes, which was also intended for See also:embossing, though it was subsequently modified to give an impression through See also:carbon paper
.
Between 1847 and 1856 See also:Alfred E
.
See also:Beach in America, and between 1855 and 186o See also:Sir Charles See also:Wheatstone in See also:England, constructed several typewriters, and in 1857 Dr S
.
W
.
See also:Francis, of New York, made one with a See also:pianoforte See also:keyboard and type bars arranged in a circle
.
In 1866 See also:John See also:Pratt, an American living in See also:London, patented a machine having 36 types mounted in three rows on a type wheel, the rotation of which brought the required See also:character opposite the printing point, when the paper with a carbon sheet intervening was pressed against it by a See also:hammer worked by the keys
.
Two years later an American patent was taken out by C
.
L
.
Sholes and C
.
Glidden, and in 1875, after effecting various improvements, they finally placed the manufacture of their machines in the hands of Messrs E
.
See also:Remington & Sons, See also:gun-makers, of See also:Ilion, New York
.
The Remington machines worked on the type-bar principle, but at first each of the 44 bars carried only a single character, so that the writing was in capitals only
.
But in 1878 type-bars with two types were introduced, so that a machine with 40 keys, two being See also:change-See also:case keys, could print 76 characters, with both See also:capital and small letters
.
The great See also:majority of See also:modern typewriters are worked from a keyboard; the few that are not, known as See also:index machines, will be disregarded here, for although they are much less expensive in first cost than the others, they scarcely come into competition as See also:practical See also:instruments, on See also:account of their slowness
.
See also:Key-See also:board machines fall into two classes, according as the types which make the impressions are (a) carried at the end of levers or type-bars which strike the paper when the keys are depressed, or (b) are arranged See also:round the circumference of a wheel, or segment, which is rotated by the See also:action of the keys until the corresponding type is brought opposite the printing point
.
The former of these arrangements is the more See also:common
.
Another point of difference is in the inking See also:device; in some cases, the type is inked by means of an See also:ink-See also:pad before being brought down on the paper to make the impression, but more frequently an inked ribbon is See also:drawn along by the action of the machine between the type-See also:face and the paper
.
Sometimes this ribbon is inked in two See also:colours, enabling the operator, by bringing the appropriate portion opposite the type-face, to write, say, in See also:black and red at will
.
A third basis of See also:classification may be found in the arrangement of the keyboard
.
In some machines there is one key for each character, in others each key does See also:duty
502
for two or more characters
.
For example, in the former class there is one key for the capital A and another for the small a, the keys being arranged in two See also:banks corresponding to the upper and See also:lower cases of a printer's type-case; in the latter, one key is capable of striking both the small and the capital letter, and it does one or other according as a subsidiary key is or is not brought into simultaneous use with it
.
In type-bar machines designed on this See also:plan, each bar carries two or more letters (cf. fig
.
1)
.
This See also:form of keyboard is also applied to type-wheel machines
.
Though there are numberless See also:differences in detail, all type-
writers, apart from the index machines, See also:bear a See also:general resem-
blance to each other in their me-
chanical arrangements
.
The really
essential operations may be reduced
to two; the machine must print a
letter when a key is struck, and it
must have a device by which the
paper may be moved a See also:short
distance to the See also:left with each
stroke in See also:- ORDER
- ORDER (through Fr. ordre, for earlier ordene, from Lat. ordo, ordinis, rank, service, arrangement; the ultimate source is generally taken to be the root seen in Lat. oriri, rise, arise, begin; cf. " origin ")
- ORDER, HOLY
order that the letters may
be printed separately, not one on
See also:top of the other
.
Of the many
subsidiary appliances that are fitted
—a See also:- BELL
- BELL, ALEXANDER MELVILLE (1819—1905)
- BELL, ANDREW (1753—1832)
- BELL, GEORGE JOSEPH (1770-1843)
- BELL, HENRY (1767-1830)
- BELL, HENRY GLASSFORD (1803-1874)
- BELL, JACOB (1810-1859)
- BELL, JOHN (1691-178o)
- BELL, JOHN (1763-1820)
- BELL, JOHN (1797-1869)
- BELL, ROBERT (1800-1867)
- BELL, SIR CHARLES (1774—1842)
bell to warn the operator that
he is approaching the end of a See also:line,
a See also:lock to prevent the machine
from working after the end of the
line has been passed, attachments
for facilitating insertion of fresh
paper, corrections, and tabulation,
&c.—some are certainly of advan-
tage, but others are more useful
to the manufacturer in See also:drawing
up his advertisements than to the
See also:expert operator, whose first care
often is to disconnect them from
" visible writing," which is some-
times put forward as a recommendation of extraordinary
importance; doubtless the novice who is learning the keyboard
finds a natural See also:satisfaction in being able to see at a glance that
he has struck the key he was
aiming at, but to the practised
operator it is not a See also:matter of
great moment whether the writing
is always in view or whether it is
only to be seen by moving the
See also:carriage, for he should as little
need to test the accuracy of his
performance by See also:constant inspec-
tion as the piano-player needs to
look at the notes to discover
whether he has struck the right
ones
.
The one important desid-
eratum, without which no type-
writer can produce See also:work of
satisfactory See also:appearance, is ac-
curacy of See also:alignment
.
For the
attainment of this the use of
type-bars has given wide See also:- SCOPE (through Ital. scopo, aim, purpose, intent, from Gr. o'KOaos, mark to shoot at, aim, o ic07reiv, to see, whence the termination in telescope, microscope, &c.)
scope
to the ingenuity of inventors,
who have been confronted with
the problem of making a See also:system
of levers at once strong, rigid
Machine. them on See also:bearings which are steady and adjustable for See also:wear in conditions where space is much restricted
.
In the See also:Oliver machine the type-bar is of the form shown in fig. r, to secure stiffness and a See also:double bearing
.
In the Bar-Lock, the type-bars are arranged three in one hanger, so that each has a bearingthree times as wide as would be possible in the same space if each had a hanger to itself (fig
.
2) ; in addition the wear of the pivots can be taken up by the screws seen on the
right of the bearings, and as a further P precaution each type-bar is locked at the printing point by falling between a pair of conical pins, which centre it exactly in the required See also:place
.
In the Yost and the See also:Empire the type-bars pass through guides
.
The centre See also:guide of the former is shown at G in fig
.
3, the type being just about to strike the paper
.
Pressure on one of the
keys works the See also:lever and pushes up the FIG
.
3 — Central connecting-See also:rod C, when the type leaves Guide and Type-bar of the ink-pad P and passes through the Yost Machine
.
guide, which is slightly bevelled so as to guide it exactly to the printing point
.
In the See also:- SMITH
- SMITH, ADAM (1723–1790)
- SMITH, ALEXANDER (183o-1867)
- SMITH, ANDREW JACKSON (1815-1897)
- SMITH, CHARLES EMORY (1842–1908)
- SMITH, CHARLES FERGUSON (1807–1862)
- SMITH, CHARLOTTE (1749-1806)
- SMITH, COLVIN (1795—1875)
- SMITH, EDMUND KIRBY (1824-1893)
- SMITH, G
- SMITH, GEORGE (1789-1846)
- SMITH, GEORGE (184o-1876)
- SMITH, GEORGE ADAM (1856- )
- SMITH, GERRIT (1797–1874)
- SMITH, GOLDWIN (1823-191o)
- SMITH, HENRY BOYNTON (1815-1877)
- SMITH, HENRY JOHN STEPHEN (1826-1883)
- SMITH, HENRY PRESERVED (1847– )
- SMITH, JAMES (1775–1839)
- SMITH, JOHN (1579-1631)
- SMITH, JOHN RAPHAEL (1752–1812)
- SMITH, JOSEPH, JR
- SMITH, MORGAN LEWIS (1822–1874)
- SMITH, RICHARD BAIRD (1818-1861)
- SMITH, ROBERT (1689-1768)
- SMITH, SIR HENRY GEORGE WAKELYN
- SMITH, SIR THOMAS (1513-1577)
- SMITH, SIR WILLIAM (1813-1893)
- SMITH, SIR WILLIAM SIDNEY (1764-1840)
- SMITH, SYDNEY (1771-1845)
- SMITH, THOMAS SOUTHWOOD (1788-1861)
- SMITH, WILLIAM (1769-1839)
- SMITH, WILLIAM (c. 1730-1819)
- SMITH, WILLIAM (fl. 1596)
- SMITH, WILLIAM FARRAR (1824—1903)
- SMITH, WILLIAM HENRY (1808—1872)
- SMITH, WILLIAM HENRY (1825—1891)
- SMITH, WILLIAM ROBERTSON (1846-'894)
Smith Premier the shafts upon which the type-
bars See also:swing are mounted tangentially on the See also:ring (fig
.
4), so that See also:long supporting bearings are obtained, while the shortness of the type-bars themselves renders it possible to make them very stiff
.
The rocking-See also:shaft mechan-
ism a (fig
.
5), by which the
See also:power is transmitted from the keys to the type-bars, admits of each key having the same leverage and tends to uniformity of See also:touch
.
This last quality is also aimed at by inter-posing an intermediate parallel bar between the key levers and the type-bar, as in the New See also:Century Caligraph
.
In the See also:Dens-more the See also:friction of the movements is minimized by the employment of See also:ball bearings for the type-bar pivots
.
See also:Electrical type-writers, in which the depression of a key does not 1 work a type-bar directly, but merely closes a See also:circuit that energizes an electro-
magnet, have been sug- FIG, 5.-Rocking-shaft Mechanism of gested as a means of Smith Premier
.
obtaining uniformity of I, Key with See also:stem
.
2, Rocking shaft
.
touch combined with ease
3, Connectingrod
.
4
.
TYPe;bar, and rapidity, but have
not as yet displaced the A and B, Conical bearings, If, in. apart. ordinary machines to any extent
.
One See also:special form of typewriter, the See also:Elliott-See also:Fisher, is designed to write in a See also:book such as a See also:ledger
.
One See also:leaf is clamped between the platen and an open See also:frame which holds the paper smoothly
.
The operative parts slide on this frame, and move up and down the See also:page so as to space the lines properly, the keyboard, with the type-bars, ribbon, &c., travelling step by step across the page
.
An adding device may be combined with this machine
.
Machine
.
End of Article: