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Document Max. Freq Min. Freq
Richard Hakluyt, The Principal Navigations, Voyages, Traffiques, and Discoveries of the English Nation 13 13 Browse Search
Strabo, Geography (ed. H.C. Hamilton, Esq., W. Falconer, M.A.) 10 10 Browse Search
A Dictionary of Greek and Roman biography and mythology (ed. William Smith) 7 7 Browse Search
Edward Porter Alexander, Military memoirs of a Confederate: a critical narrative 6 6 Browse Search
Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War. Volume 3. 5 5 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 5 5 Browse Search
Alfred Roman, The military operations of General Beauregard in the war between the states, 1861 to 1865 5 5 Browse Search
Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War. Volume 4. 2 2 Browse Search
Pliny the Elder, The Natural History (ed. John Bostock, M.D., F.R.S., H.T. Riley, Esq., B.A.) 2 2 Browse Search
Appian, The Civil Wars (ed. Horace White) 2 2 Browse Search
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Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for 1400 AD or search for 1400 AD in all documents.

Your search returned 5 results in 5 document sections:

2. A sheet exhibiting a statement of facts in tabular form, so arranged that any particular may be readily referred to. Hipparchus, of Alexandria (160-125 B. C.), reduced geography to a science, determining the latitude and longitude of places by celestial observations. The geography of Ptolemy was translated into Arabic by the command of the Khalif Al Maimoun, between 813 and 833 A. D. Charts were introduced into the marine service by Henry, son of John I. of Portugal, about A. D. 1400; brought to England by Bartholomew Colon in 1489. Mercator's chart is a projection of the surface of the earth in the plane, with the meridians parallel to each other, the degrees of longitude all equal, and the degrees of latitude increasing in a corresponding ratio towards the poles. It was introduced by Gerald Mercator in 1556. The principle of its construction had, however, been previously explained by Edward Wright. The first computation of longitude from the meridian of Greenw
one when set on the ground. It had neither sleeves nor hood, but holes for the hand and projections like wings on the shoulders to turn off the rain. The Armenians of Schamachi lead a nomadic life in movable huts constructed of wicker-work covered with felt, and with mats made of reed-grass. The Nogai Tartars of the Caspian have similar shelters. The hatters attribute the art of felting to Clement. The hatters are a very modern guild, and cannot antedate their order beyond the year 1400. Dr. Hooke lectured on felt-making before the Royal Society, 1666. – Pepys. The mechanical features of the operation of felting are derived from the jagged character of the edges of some animal fibers, which enables them to pass in one direction, that is, root first, but opposes their withdrawal. The most familiar illustration of this feature is an awn of barley, a beard of wheat, or a head of grass of some kinds. These, as we all know, when introduced but-first between the wrist an
r's patent is founded on the Siemens regenerative principle, a cellular mass of brick-work being first raised to a high heat, and this heat then imparted to the blast, which is made to pass through it, while a similar mass of brick-work is being heated, ready for use as soon as the first shall have become partially cooled. Whitwell makes his brickwork into large compartments instead of cellular. It is claimed that the blast can be heated to 1800° by this stove, and a regular working heat of 1400° be steadily maintained. To estimate properly the great importance of improved devices for heating the blast, it should be remembered that for every ton of materials charged in at the tunnel-head at least three tons' weight of air is blown in at the bottom through the tuyeres; it can therefore be readily understood how desirable it is that this air should be put into the furnace already heated, instead of throwing the work of heating it upon the fuel in the furnace, which should find abundan
of from 40 to 50 pages, with scenes and incidents from the Bible. It was a great favorite for four or five centuries, existing at first in the manuscript form; it was printed from blocks in 1440, and remained as a block-book long after the invention of separate-type printing by Guttenberg. The book had several authors, but its first compilation is ascribed to Bonaventura, the chief of the Franciscans, in 1260. John Guttenberg (called Geinsfleisch, from the name of his house) was born in 1400 at Mentz. In company with Faust and others he printed several works with wooden types and wooden blocks. These were the Alexandri Galli Doctrinale and Petri Hispani Tractatus, in 1442; and subsequently the Tabula Alphabetica, Catholicon, Donati Grammatica, and the Confessionalia, between the years 1444 and 1450. In the years 1450-55, the Bible of 637 leaves was printed by Guttenberg and Faust with cut metal types. Guttenberg died in 1468, in high honor for his genius and perseverance. Faus
. Gabled roof.Pointed roof. Gothic roof.Queen-post roof. Gravel roof.Ridged roof. Grecian roof.Saddle-roof. Ground-roof.Shed-roof. Half-hip roof.Span-roof. High roof.Tin roof. Hip-roof.Truncated roof. The early Gothic architects endeavored, as far as possible, to dispense with wood by the employment of stone vaulting, and it is not until the reign of Edward III., 1327, that timberframed roofs became common in large constructions. They began to be common in churches about the year 1400, and from that time to the present, wood, though now to some extent supplanted by iron, has maintained a preeminence as a roofing material. The simplest form of roof (1) consists merely of inclined rafters a b, butting at their upper ends; to keep their lower ends in place, however, a fixed bearing of some kind is necessary. For this purpose the tie-beam c (2) is introduced, into which the lower ends of the rafters are mortised. To stiffen the truss thus formed, and to support the midd