Italian High Renaissance Painter and Inventor, 1452-1519 Florentine Renaissance man, genius, artist in all media, architect, military engineer. Possibly the most brilliantly creative man in European history, he advertised himself, first of all, as a military engineer. In a famous letter dated about 1481 to Ludovico Sforza, of which a copy survives in the Codice Atlantico in Milan, Leonardo asks for employment in that capacity. He had plans for bridges, very light and strong, and plans for destroying those of the enemy. He knew how to cut off water to besieged fortifications, and how to construct bridges, mantlets, scaling ladders, and other instruments. He designed cannon, very convenient and easy of transport, designed to fire small stones, almost in the manner of hail??grape- or case-shot (see ammunition, artillery). He offered cannon of very beautiful and useful shapes, quite different from those in common use and, where it is not possible to employ cannon ?? catapults, mangonels and trabocchi and other engines of wonderful efficacy not in general use. And he said he made armoured cars, safe and unassailable, which will enter the serried ranks of the enemy with their artillery ?? and behind them the infantry will be able to follow quite unharmed, and without any opposition. He also offered to design ships which can resist the fire of all the heaviest cannon, and powder and smoke. The large number of surviving drawings and notes on military art show that Leonardo claims were not without foundation, although most date from after the Sforza letter. Most of the drawings, including giant crossbows (see bows), appear to be improvements on existing machines rather than new inventions. One exception is the drawing of a tank dating from 1485-8 now in the British Museum??a flattened cone, propelled from inside by crankshafts, firing guns. Another design in the British Museum, for a machine with scythes revolving in the horizontal plane, dismembering bodies as it goes, is gruesomely fanciful. Most of the other drawings are in the Codice Atlantico in Milan but some are in the Royal Libraries at Windsor and Turin, in Venice, or the Louvre and the École des Beaux Arts in Paris. Two ingenious machines for continuously firing arrows, machine-gun style, powered by a treadmill are shown in the Codice Atlantico. A number of other sketches of bridges, water pumps, and canals could be for military or civil purposes: dual use technology. Leonardo lived at a time when the first artillery fortifications were appearing and the Codice Atlantico contains sketches of ingenious fortifications combining bastions, round towers, and truncated cones. Models constructed from the drawings and photographed in Calvi works reveal forts which would have looked strikingly modern in the 19th century, and might even feature in science fiction films today. On 18 August 1502 Cesare Borgia appointed Leonardo as his Military Engineer General, although no known building by Leonardo exists. Leonardo was also fascinated by flight. Thirteen pages with drawings for man-powered aeroplanes survive and there is one design for a helicoidal helicopter. Leonardo later realized the inadequacy of the power a man could generate and turned his attention to aerofoils. Had his enormous abilities been concentrated on one thing, he might have invented the modern glider.  Related Paintings of Leonardo Da Vinci :. | Detail of Madonna of the Rocks | Lady with Emine | Christ's Head | Virgin and Child with St Anne | Adoration of the Magi |
Related Artists:
Arthur Devis
1712-1787 English By 1728 he had left Preston, and the following year he was working in London for the Flemish topographical and sporting painter Peter Tillemans. There he specialized in landscape painting and copying various works in Tillemans studio after Marco Ricci, Giovanni Paolo Panini and Jan van Bloemen. Devis earliest known commission, Hoghton Towers from Duxon Hill, Lancashire (1735; priv. col., see 1983 exh. cat., no. 3), painted for Sir Henry Hoghton during a trip to Preston in 1734-5, shows Tillemans influence in its attention to detail and the use of thin, transparent paint. Thomas Lister with his Family (c. 1738; Chicago, IL, A. Inst.) demonstrates a similar interest in landscape, featuring the family group in Gisburn Park, Lancs. Devis had returned to London by 1742 and established himself as a painter of conversation pieces, with a studio in Great Queen Street. Roger Hesketh with his Family is typical of his work at this time; it shows how Devis transformed the intimacy of a Dutch 17th-century genre scene into an elegant interior with the group of sitters connected by formal, schematic gestures. Roger Hesketh stands apart, in a tastefully contrived pose, his legs crossed and right arm thrust inside his waistcoat. His son, Fleetwood, stands with his hand resting on a dog next to his wife, who is seated with an infant on her lap. The adjacent telescope, globe and marine paintings are intended to advertise Hesketh interest in astronomy and travel.
Etienne Billet
French, born 1821.
KEIRINCKX, Alexander
Flemish painter (b. 1600, Antwerpen, d. 1652, Amsterdam). Flemish painter. He was the son of Matthijs Keirinckx and Anna Masson. In 1619 he became a master in Antwerp's Guild of St Luke, he married Clara Matthausen on 18 June 1622, and in 1624 he took on Artus Verhoeven as an apprentice. From 1636 onwards he is regularly recorded in Amsterdam, where he was registered as a citizen in the year of his death. He visited Great Britain, possibly in 1625 (Walpole mentions two signed and dated drawings of London views from this year) and definitely in 1640-41, when he undertook commissions from King Charles I to paint views of royal castles and palaces.