See also:

• JOHN
• JOHN (1167–1216)
• JOHN (1290-c. 1320)
• JOHN (1296-1346)
• JOHN (1371–1419)
• JOHN (1468-1532)
• JOHN (1801-1873)
• JOHN (Heb. llni')
• JOHN (ZAPOLYA) (1487-1540)
• JOHN, 4TH MARQUESS OF TWEEDDALE (c. 1695-1762)
• JOHN, DON (1545-1578)
• JOHN, DON (1629–1679)
• JOHN, GOSPEL OF ST
• JOHN, or HAYS (1513–1571)
• JOHN, THE APOSTLE
• JOHN, THE EPISTLES OF

JOHN See also:

• HARRISON
• HARRISON, BENJAMIN
• HARRISON, FREDERIC (1831— )
• JOHN HARRISON (1693—1776)
• HARRISON, THOMAS (16o6-166o)
• HARRISON, THOMAS ALEXANDER (1853– )
• HARRISON, WILLIAM (1534–1593)
• HARRISON, WILLIAM HENRY (1773–1841)

HARRISON (1693—1776)  , See also:

• ENGLISH

English horologist, was the son of a See also:

• CARPENTER, LANT (1780-1840)
• CARPENTER, MIRY (1807-1877)
• CARPENTER, WILLIAM BENJAMIN (1813-1885)

carpenter, and was See also:

• BORN, IGNAZ, EDLER VON (1742–1791)

born at Faulby, near See also:

• PONTEFRACT (pronounced and sometimes written " Pomfret ")

Pontefract in See also:

• YORKSHIRE

Yorkshire, in the See also:

• YEAR

year 1693 . Thence his See also:

• FATHER

father and See also:

• FAMILY

family removed in 170o to See also:

• BARROW
• BARROW (from A.S. beorh, a mount or hillock)
• BARROW, ISAAC (1630-1677)
• BARROW, SIR JOHN (1764-1848)

Barrow in See also:

• LINCOLNSHIRE

Lincolnshire . See also:

• YOUNG
• YOUNG, A
• YOUNG, ARTHUR (1741-1820)
• YOUNG, BRIGHAM (1801-1877)
• YOUNG, CHARLES MAYNE (1777–1856)
• YOUNG, EDWARD (1683–1765)
• YOUNG, JAMES (1811-1883)
• YOUNG, THOMAS (1773-1829)

Young See also:

• HARRISON
• HARRISON, BENJAMIN
• HARRISON, FREDERIC (1831— )
• HARRISON, JOHN (1693—1776)
• HARRISON, THOMAS (16o6-166o)
• HARRISON, THOMAS ALEXANDER (1853– )
• HARRISON, WILLIAM (1534–1593)
• HARRISON, WILLIAM HENRY (1773–1841)

Harrison at first learned his father's See also:

• TRADE (O. Eng. trod, footstep, from tredan, to tread; in M. Eng. the forms teed, trod and trade appear, the last in the sense of a beaten track)
• TRADE, BOARD OF

trade, and worked at it for several years, at the same See also:

• TIME (0. Eng. Lima, cf. Icel. timi, Swed. timme, hour, Dan. time; from the root also seen in " tide," properly the time of between the flow and ebb of the sea, cf. O. Eng. getidan, to happen, " even-tide," &c.; it is not directly related to Lat. tempus)
• TIME, MEASUREMENT OF
• TIME, STANDARD

time occasionally making a little See also:

• MONEY

money by See also:

• LAND

land-measuring and See also:

• SURVEYING

surveying . The See also:

• BENT
• BENT (E1. BENI)
• BENT, JAMES THEODORE (1852–1897)

bent of his mind, however, was towards See also:

• MECHANICAL

mechanical pursuits . In 1715 he made a See also:

• CLOCK

clock with wooden wheels, which is in the patent museum at See also:

• SOUTH
• SOUTH, ROBERT (1634–1716)

South See also:

• KENSINGTON

Kensington, and in 1726 he devised his ingenious " gridiron pendulum," which maintains its length unaltered in spite of See also:

• VARIATIONS
• VARIATIONS, CALCULUS
• VARIATIONS, CALCULUS OF

variations of temperature (see CLOCK) . Another invention of his was a recoil clock escapement in which See also:

• FRICTION (from Lat. fricare, to rub)

friction was reduced to a minimum, and he was the first to employ the commonly used and effective See also:

• FORM (Lat. forma)

form of " going ratchet," which is a See also:

• SPRING (from " to spring," " to leap or jump up," " burst out," O. Eng., springau, a common Teut. word, cf. Ger. springer, possibly allied to Gr. QnrFpxecOac, to move rapidly)

spring arrangement for keeping the timepiece going at its usual See also:

• RATE

rate during the See also:

• INTERVAL

interval of being See also:

• WOUND (O. Eng. wund,connected with a Teutonic verb, meaning to strive, fight, suffer, seen in O. Eng. winnan, whence Eng. " win ")

wound up . In Harrison's time the See also:

• BRITISH

British See also:

• GOVERNMENT
• GOVERNMENT (0. Fr. governement, mod. gouvernement, O. Fr. governer, mod. gouverner, from Lat. gubernare, to steer a ship, guide, rule; cf. Gr. xv(3epvav)

government had become fully alive to the See also:

• NECESSITY (Lat. necessitas)

necessity of determining more accurately the See also:

• LONGITUDE (from Lat. longitudo, " length ")

longitude at See also:

• SEA (in O. Eng. sae, a common Teutonic word; cf. Ger. See, Dutch Zee, &c.; the ultimate source is uncertain)
• SEA, COMMAND OF THE

sea . For this purpose they passed an See also:

• ACT (Lat. actus, actum)

act in 1713 offering rewards of £1o,000, £15,000 and £20,000 to any who should construct chronometers that would determine the longitude within 6o, 40 and 30 M. respectively . Harrison applied himself vigorously to the task, and in 1735 went to the See also:

• BOARD (O. Eng. bord)

Board of Longitude with a See also:

• WATCH (in O. Eng. wcecce, a keeping guard or watching, from wacian, to guard, watch, wacan, to wake)

watch which he also showed to See also:

• EDMUND
• EDMUND, or EADMUND (c. 980-1016)
• EDMUND, SAINT [EDMUND RICE] (d. 1240)

Edmund See also:

• HALLEY, EDMUND (1656–1742)

Halley, See also:

• GEORGE
• GEORGE, 8TH MARQUESS OF TWEEDDALE (1787-1876)
• GEORGE, HENRY (1839—1897)
• GEORGE, LAKE
• GEORGE, SAINT (d. 303)

George See also:

• GRAHAM, SIR GERALD (1831–1899)
• GRAHAM, SIR JAMES ROBERT GEORGE
• GRAHAM, SYLVESTER (1794-1851)
• GRAHAM, THOMAS (1805-1869)

Graham and others . Through their See also:

• INFLUENCE (Late Lat. influentia, from influere, to flow in)

influence he was allowed to proceed in a See also:

• KING
• KING (O. Eng. cyning, abbreviated into cyng, cing; cf. O. H. G. chun- kuning, chun- kunig, M.H.G. kiinic, kiinec, kiinc, Mod. Ger. Konig, O. Norse konungr, kongr, Swed. konung, kung)
• KING [OF OCKHAM], PETER KING, 1ST BARON (1669-1734)
• KING, CHARLES WILLIAM (1818-1888)
• KING, CLARENCE (1842–1901)
• KING, EDWARD (1612–1637)
• KING, EDWARD (1829–1910)
• KING, HENRY (1591-1669)
• KING, RUFUS (1755–1827)
• KING, THOMAS (1730–1805)
• KING, WILLIAM (1650-1729)
• KING, WILLIAM (1663–1712)

king's See also:

• SHIP

ship to See also:

• LISBON (Lisboa)

Lisbon to test it; and the result was so satisfactory that he was paid £500 to carry out further improvements . Harrison worked at the subject with the utmost perseverance, and, after making several watches, went up to See also:

• LONDON

London in 1761 with one which he considered almost perfect . His son 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 was sent on a voyage to See also:

• JAMAICA

Jamaica to test it; and, on his return to See also:

• PORTSMOUTH
• PORTSMOUTH, EARLS OF
• PORTSMOUTH, LOUISE DE

Portsmouth in 1762, it was found to have lost only i See also:

• MINUTE
• MINUTE (Lat. minutes, small; minuere, to make less)

minute 54z seconds .

This was surprisingly accurate, as it determined the longitude within 18 m., and Harrison claimed the full See also:

• REWARD

reward of £20,000; but though from time to time he received sums on See also:

• ACCOUNT
• ACCOUNT (through O. Fr. acont, Late Lat. comptum, cornputare, to calculate)

account, it was not till 1773 that he was paid in full . In these watches See also:

• COMPENSATION (from Lat. compensare, to weigh one thing against another)

compensation for changes of temperature was applied for the first time by means of a " compensation-curb," designed to alter the effective length of the See also:

• BALANCE (derived through the Fr. from the Late Lat. bilantia, an apparatus for weighing, from bi, two, and lanx, a dish or scale)

balance-spring in proportion to the expansion or contraction caused by variations of temperature . Harrison died in London on the 24th of See also:

• MARCH
• MARCH (1) (from Fr. marcher, to walk; the earliest sense in French appears to be " to trample," and the origin has usually been found in the Lat. marcus, hammer; Low Lat. marcare, to hammer; hence to beat the road with the regular tread of a soldier: cf.
• MARCH, AUZIAS (c. "1395-1458)
• MARCH, EARLS OF
• MARCH, FRANCIS ANDREW (1825– )

March 1776 . His want of See also:

• EARLY
• EARLY, JUBAL ANDERSON (1816-1894)

early See also:

• EDUCATION

education was See also:

• FELT (cognate with Ger. Filz, Du. vilt, Swed. and Dan. fill; the root is unknown; the word has given Med. Lat. filtrum, " filter ")

felt by him greatly throughout See also:

• LIFE

life . He was unfortunately never able to See also:

• EXPRESS (through the French from the past participle of the Lat. exprimere, to press out, by transference used of representing objects in painting or sculpture, or of thoughts, &c. in words)

express his ideas clearly in See also:

• WRITING
• WRITING (the verbal noun of " to write," O. Eng. writan, to inscribe)

writing, although in conversation he could give a very precise and exact account of his many intricate mechanical contrivances . Among his writings were a Description concerning such Mechanism as will afford a See also:

• NICE

Nice or True See also:

• MENSURATION (Lat. mensura, a measure)

Mensuration of Time (1775), and The Principles of Mr Harrison's Timekeeper, published by 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 of the Commissioners of Longitude (1767) .