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Lucius R. Paige, History of Cambridge, Massachusetts, 1630-1877, with a genealogical register 65 65 Browse Search
Harper's Encyclopedia of United States History (ed. Benson Lossing) 55 55 Browse Search
George Bancroft, History of the United States from the Discovery of the American Continent, Vol. 4, 15th edition. 47 47 Browse Search
Benjamin Cutter, William R. Cutter, History of the town of Arlington, Massachusetts, ormerly the second precinct in Cambridge, or District of Menotomy, afterward the town of West Cambridge. 1635-1879 with a genealogical register of the inhabitants of the precinct. 15 15 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 8 8 Browse Search
HISTORY OF THE TOWN OF MEDFORD, Middlesex County, Massachusetts, FROM ITS FIRST SETTLEMENT, IN 1630, TO THE PRESENT TIME, 1855. (ed. Charles Brooks) 7 7 Browse Search
Charles A. Nelson , A. M., Waltham, past, present and its industries, with an historical sketch of Watertown from its settlement in 1630 to the incorporation of Waltham, January 15, 1739. 4 4 Browse Search
the Rev. W. Turner , Jun. , MA., Lives of the eminent Unitarians 4 4 Browse Search
Historic leaves, volume 3, April, 1904 - January, 1905 4 4 Browse Search
Cambridge History of American Literature: volume 3 (ed. Trent, William Peterfield, 1862-1939., Erskine, John, 1879-1951., Sherman, Stuart Pratt, 1881-1926., Van Doren, Carl, 1885-1950.) 4 4 Browse Search
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Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for 1748 AD or search for 1748 AD in all documents.

Your search returned 8 results in 6 document sections:

Knight's Mechanical Encyclopedia (ed. Knight), C. (search)
ed, one in each hand, and drawn past each other, so laying straight the fiber which was placed between them. The action is explained under card (which see). In 1748, Lewis Paul patented two different machines for carding. In one of them the cards are arranged on a flat surface, and in the other they are arranged on the periphll. Dr. Watson, in 1747, passed transmitted electricity through 2,800 feet of wire and 8,000 feet of water, using the earth circuit. Benjamin Franklin, in 1748, performed his experiments on the banks of the Schuylkill, concluded by a picnic, when spirits were fired by an electric spark sent through the river, and a turkeyrance. Red chalk is found in France. The holder is a porte-crayon. Crayons are said to have been made in France in 1422, and imported thence into England in 1748. It is hard to say how long ago charcoal, chalk, and ochreous earths were used. Hans Holbein drew portraits in crayon in 1540. Sir Thomas Lawrence excelled in
Knight's Mechanical Encyclopedia (ed. Knight), D. (search)
end, one diagonal the other right-angular. The shank of each outer jaw is connected to the sleeved inner jaw of the other pair, the sleeves slipping on the shanks of the jaws to which they are opposed. The double threads act in conjunction, to expand or close each pair simultaneously. Doub′le-hung Win′dow. One with two sashes, each having its complement of lines, weights, and pulleys. Doub′le-im′age mi-crom′eter. Suggested by Roemer about 1678; brought into use by Bonguer about 1748. It is formed by dividing diametrically the object-glass of a telescope or microscope, the straight edges being ground smooth so that they may easily slide by one another. The parts are separable by a screw, which moves an index on a graduated scale. A double image of the object in the field of view is produced by the separation of the segments; and by bringing the opposite edges of the two images into contact, a measure of the diameter of the object is obtained in terms of the extent o
Knight's Mechanical Encyclopedia (ed. Knight), G. (search)
700 B. C. The biremes, triremes, quinqueremes, etc., were galleys having so many banks of oars, — two, three, five, etc. The pentecontori had fifty oars in a single tier. The galesses of the Venetians had 130 feet keel, 30 feet beam, three masts, thirty banks (see bank, 5, b) of two oars each, each oar manned by six chained slaves. They were intro- duced into France in the reign of Charles VI., and manned by criminals. He kept forty in his service. They were abolished by Louis XV. in 1748. b. A clinker-built boat for ship's use, from 28 to 36 feet long, and with a beam equal to .2 of its length. It is a light, sharp boat, carrying from ten to twelve oars, and is used for speedy rowing on expeditions. It usually has six alternate oars rowed by a picked crew. c. The cook-house on board ship which is on deck, or in a forward part of the vessel. Ship's galley. In the example, the caboose has three grates in front so arranged that one or all may be used at a time, an
Knight's Mechanical Encyclopedia (ed. Knight), H. (search)
i-om′e-ter. 1. (Optics.) A double objectglass micrometer (see micrometer), called a heliometer from its being originally used for measuring the angle subtended by the sun. The telescope, in whose field it is placed, is usually of large size and mounted equatorially; that is, having two axes of motion at right angles to each other; one parallel to the axis of the earth and the other to the equator. The instrument was suggested by Roemer about 1678, and brought into use by Bouguer about 1748. G. Chambers credits its application or improvement to De Charmeres, a French naval officer of the last century. The object-glass is divided diametrically, and the parts are capable of motion in their own planes, and through considerable intervals by means of screws, and thus their optical centers can be separated. Each half-glass forming a separate image of any object, the two images will be at an angular distance, dependent on the amount of separation of the centers of the two half-glas
Knight's Mechanical Encyclopedia (ed. Knight), T. (search)
hich is guided by two men, who carry it in difficult places. See telegraph-carriage. Tele-graph′ic a-larm′. （Telegraphy.) A sounder operated by electro-telegraphic means. There are many forms:— The alarm which runs down, a detent being withdrawn from the escapement. See acoustic Tele-Graph, page 11. The clicking-instrument, operated by successive impulses. This has grown into the ordinary telegraph, which is read by sound. See also telephone. Although Franklin, in 1748, fired spirits by means of a spark transmitted across the Schuylkill, the first distinct plan for a telegraphic alarm to call the attention of an operator or correspondent was by Schweigger, about 1811. He proposed a pistol, charged with a mixture of oxygen and hydrogen gases, to be fired by a spark derived from the long electric wire proceeding from the distant station. Telegraphic alarm. Fig. 6239 is an alarm with an escapement. a is an electromag-net; b an armature of soft iron,
Knight's Mechanical Encyclopedia (ed. Knight), W. (search)
n the reign of Charles I., about 1634. He called the product Londrinding, and states that he had found out an art for affixing wool, silk, and other materials upon linen, cotton, leather, and other substances, with oil, size, and cements, so as to make them serviceable for hangings and other purposes. His claim to priority was disputed, and it was stated to have been invented in 1620 by Francois of Rouen, where the business was carried on by father and son till the death of the latter, in 1748. Wooden blocks for printing the patterns in size were exhibited during the dispute. Nemetz describes the manufacture of wax-cloth hangings with wool chopped and beat fine to one Andrau, a Frenchman, early in the eighteenth century. This artist was inspector of the palace of Luxembourg, was celebrated for his arabesque and grotesque paintings, and had a manufactory of hangings in the palace. Savary, in his Dictionary of commerce, states that flockhangings were first made at Rouen, but