Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for 1689 AD or search for 1689 AD in all documents.

Your search returned 4 results in 3 document sections:

Knight's Mechanical Encyclopedia (ed. Knight), B. (search)
1647. The weapon was introduced into the English army in 1672, and used at Killiecrankie, in Perthshire, where the forces of William of Orange, commanded by Mackay, were defeated by those of James II., under the command of Graham, of Claverhouse, 1689; and also at the battle of Marsaglia, 1693, with great success against the enemy, unprepared for the encounter with so formidable a novelty. The first known bayonet was a kind of long and slender rapier, with a wooden handle, or plug, which wainent substances employed in the manufacture of buttons. Buttons of brass are noticed on dresses of the tenth century. About 1670 the metallic buttonmanufacture of England took its rise. A manufactory was established in Birmingham, England, 1689, and that city still maintains a preeminence in this manufacture, as in so many others, employing no less than 4,981 persons in this branch of industry alone, according to the census of 1851. Metallic buttons with shanks are usually made by pun
Knight's Mechanical Encyclopedia (ed. Knight), D. (search)
of a right-angled triangle, the angles of which were made in accordance with the pitch of the proposed screw. The perpendicular being wrapped around the rod at right angles to the axis, the hypoteneuse gave the spiral of the screw, and the base the pitch. The subject of originating screws, which is closely connected with the dividing-engine, may be pursued in Holtzapffel (Vol. II. pp. 635 – 655). The methods of graduating instruments received much attention from Tompion (1660), Sharp (1689), the Sissons, and Bird (1745), the latter receiving pound 500 from the Board of Longitude for his method of dividing. Hindley, in 1740, constructed an engine for dividing circles, which also served to cut clock-wheels. Ramsden, in 1766, contrived his dividing-engine, and in 1777 received a reward of pound 615 from the Board of Longitude. Following Ramsden were the Troughtons, father and son, the latter of whom received the Copley medal of the Royal Society of England for his improved me
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
rimary planets about the sun, and that of the moon round the earth, performed in the exact times actually occupied in those motions. The orbits of the planets are said to have their true proportions, eccentricities, positions, and obliquities to the elliptic; and by this machine, — as a distinguished author observes, — as by a perpetual ephemeris, the situations, conjunctions, and oppositions of the planets for any time may be accurately determined. We read of a planetarium by Watson, in 1689, and another constructed by Rowley, 1700, from the plans of Graham. This was the one referred to above as having come into the possession of the Earl of Orrery, and is similar to the upper one in the accompanying figure. Sir John Herschel says: As to getting correct notions on the magnitudes and distances of the planets by drawing circles on paper, or, still worse, from those very childish toys called orreries, it is out of the question. With great deference to the distinguished astron