Perspective, p. 974. Octahedron, p. 906. Oval, p. 929. 2 7 в 9 5 1 8 Tetragons, p. 1369. 4 3 Magic Square, p. 799. Parabola, p. 945. Parallelopiped, p. 947. Pelecoid, p. 963. A D, D C, inverted quadrantal arcs; A B C, semicircle. a d, perpendicu c, c, c, Tangents, p. 1352. Tetrahedron, p, 1369. Trapezium, p. 1406. AADA Triangles, p. 1411. 1, equilateral triangle; 2, isosceles triangle: 3, right-angled triangle; 4, obtuse-angled triangle; 5, scalene triangle. a Truncate, p. 1420. с Section of a Locomotive Boiler, p. 148. A, fire-box; B, combustion chamber; D, grate: C, ash-pan: K, water-legs; P, crown sheet; H, wagon-top: 1, steam-pipe; J, steam-dome; G, gusset; F. barrel: E, Hues; N, breeches-pipe; M, smoke-box; L, saddle; O, blast-pipe; R, dry-pipe. Bolt and Nut, P. 149. D C A Carriage Bolt, p.149. A, bolt: B, head: C, nut; D, checknut. Differential Motion, p. 372. A, small cylinder; B. large cylinder; C, pulley. C Crown-wheel, Dash-pot. Derrick Crane, Drill-press, p. 413. Hindley's Jack-screw, a Pendulums, p. 965. a, common pendulum; b, gridiron pendulum. Piston, p. 991. Pitch-line, p. 991. Post-mill, p. 1017. Pedometer, p. 962, Perpetual Screw, 973. Pillow-block, p.987. Pinch-bar, p. 988, Pinions, p. 989. a, spur-wheel and pinions; b, right Pivot, p. 993, PICTORIAL ILLUSTRATIONS FOR MECHANICS, MACHINERY, &c.-Continued. Shoulder Sections,p.1193. block, 1223. Condensing Beam-engine, p. 1292. a, steam-cylinder; b, piston; c, upper steam-port or passage; d, lower steam-port; e e, parallel motion: ff. beam: g, connecting rod: h, crank; ii, fly-wheel; &, eccentric and its rod for working the steam-valve: 7, steam-valve and valve-casing; m, throttle-valve; n, condenser: o, injectioncock; p, air-pump: g, hot-well; r, shifting-valve, for creating a vacuum in the condenser, previous to starting the engine; 8, feed-pump for supplying the boilers; t, cold-water pump for supplying the condenser cistern; u, governor. Safety-valve, p. 1163. a, boiler; b, valve; c, fulcrum; d, steelyard lever; e, weight. Shears, p. 1215. b, still; c d, head and neck; cup: d, thin e, end of neck where it joins brass cup; the worm; f, cock; g, worm- e f, stopcock. Buskin, p. 178. Coat of Mail, 245. Gorget, p. 581. Windlass, p. 1517. Water-gauge, p. 1496. Castle, p. 203. Donjon, p. 404. 1, moat; 2, drawbridge; 3, wicket; 4. sally-port; 5, portcullis; 6, outer walls; 7, parapet; 3, rampart: 9, loop-holes; 10, escutcheon; 11, bulwark; 12, sentinel; 13, magazine: 14, a cell: 15, donjon or keep: 16, barracks; 17, barbacan; 18, watchman; 19, turret; 20, chapel: 21, belfry: 22, state court; 23, merlons; 24, embrasures. Drawbridge, p. 411. Halberd, p. 602. Hauberk, p. 611. Helmet, Barred, Arbalist, p. 70. Knight in full Ar Knight and Horse, mor, p. 742. p. 742. |