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James Parton, Horace Greeley, T. W. Higginson, J. S. C. Abbott, E. M. Hoppin, William Winter, Theodore Tilton, Fanny Fern, Grace Greenwood, Mrs. E. C. Stanton, Women of the age; being natives of the lives and deeds of the most prominent women of the present gentlemen 9 1 Browse Search
Edward L. Pierce, Memoir and letters of Charles Sumner: volume 1 6 0 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 5 1 Browse Search
P. Terentius Afer (Terence), Heautontimorumenos: The Self-Tormenter (ed. Henry Thomas Riley) 2 0 Browse Search
William Hepworth Dixon, White Conquest: Volume 2 2 0 Browse Search
Jula Ward Howe, Reminiscences: 1819-1899 2 0 Browse Search
The Daily Dispatch: January 12, 1861., [Electronic resource] 2 0 Browse Search
The Daily Dispatch: May 11, 1864., [Electronic resource] 2 0 Browse Search
The Daily Dispatch: May 12, 1864., [Electronic resource] 2 0 Browse Search
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Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for Covent Garden (United Kingdom) or search for Covent Garden (United Kingdom) in all documents.

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Knight's Mechanical Encyclopedia (ed. Knight), C. (search)
for the seventeenth century to bring it into general notice and usefulness. Early in the seventeenth century, Galileo, observing the oscillations of a suspended lamp, conceived the idea of making a pendulum a measurer of time, and in 1639 published a work on mechanics and motion, in which he discussed the isochronal properties of oscillating bodies suspended by strings of the same length. A. D. 1641, Richard Harris constructed a pendulum clock in London, for the church of St. Paul, Covent Garden. A. D. 1649, a pendulum clock was constructed by Vincenzio Galileo (the younger Galileo). A. D. 1650, Huyghens constructed clocks on this principle: — He first explained the nature, properties, and application of the pendulum, and made it perfect, except the compensation added by Graham, about 1700. Anchor pallets were introduced by Clement, in 1680, who also devised the mode of suspending the pendulum from a stud, by means of a piece of watchspring. The mechanism of repetition
Knight's Mechanical Encyclopedia (ed. Knight), D. (search)
row pipes which produce a certain sweetness of tone. See stop. Dul′ci-mer. The dulcimer is supposed to be identical with the psaltery of the Hebrews. It is frequently mentioned in Scripture. The modern dulcimer consists of a box with a cover which forms a sounding-board, and has a number of wire strings stretched over a bridge at each end. It is played by elastic rods with pellets of cork at the ends. The number of strings is usually about fifty. Here [at the puppet play in Covent Garden], among the fiddlers, I first saw a dulcimere played on with sticks knocking of the strings, and is very pretty. — Pepys's Diary, May 24, 1662. The Javanese gambang has wooden and brass bars of different lengths placed crosswise over a wooden trough. They are struck by small sticks with a ball of pith at the end. — Bickmore's Travels in the Indian Archipelago. Du′ledge. The dowel-pins of the fellies of a gun-carriage wheel. Dum. （Mining.) A frame of wood like the jam
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
ar fixed at right angles to an upright arbor, and the movement was accelerated or retarded by diminishing or increasing the distance of the weights from the arbor. The clocks erected at Strasburg, 1370, Courtray, 1370, and Spire, 1395, were probably of this character, as were also the astronomical clocks of Tycho Brahe and other less celebrated astronomers of his period. b shows the Harris pendulum as contrived by him in the clock put up in the turret of the Church of St. Paul, Covent Garden, London, in 1641. It will be seen that it may have occurred as a modification of the De Wyck vibrating arm, one of the weights being taken off and the arm hung vertically. Galileo, about 1581, observed the swinging of a suspended lamp and the regularity of the vibrations recommended a pendulous weight as a time-measurer. He applied it as such successfully, at first employing persons to count the oscillations, but soon effected it by machinery. Dr. Thomas Young in his lectures on Natu