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Knight's Mechanical Encyclopedia (ed. Knight) 6 0 Browse Search
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Knight's Mechanical Encyclopedia (ed. Knight), B. (search)
o impart rotation. j j, McMurtry's bullet, with spiral grooves. k k, Williams's bullet, with a headed tige to expand a rounding disk at the base. l l, Dibble's bullet, with a recess for the powder. m m, Shaler's triple bullet, the pieces of which are intended to diverge after leaving the muzzle. n n, Maduell's bullet, which is built up of interlocking portions, which part as they leave the capsule and muzzle. q q, Shocks's perforated bullet, with a sabot in the rear. r r, Hope's bullet, with a bent tail to direct it in a curved path. s s, Matteson's bullet, with spiral openings through it. The following table shows the number of spherical leaden balls in a pound, from 1 5/16 to .237 of an inch diameter: — Diam.No.Diam.No.Diam.No.Diam.No.Diam.No. Inch.Inch.Inch.Inch.Inch. 1.671.7113.48840.329130.265250 1.3262.69314.46945.321140.262260 1.1573.67715.45350.314150.259270 1.0514.66216.42660.307160.256280 .9775.6517.40570.301170.252290 .9196.63718.39575.29
Knight's Mechanical Encyclopedia (ed. Knight), E. (search)
of phosphorus, dispensing with the application of artificial heat. Hope contrived a eudiometer in which a graduated tube containing a cubic inch of air was inverted into a phial containing the oxygen-absorbing solution. The apparatus, being tight, permitted the contents to be agitated. As gas was absorbed, water was admitted to the phial, and the rise of the liquid in the graduated tube indicated the amount of the gaseous remainder. Henry substituted a caoutchouc ball for the phial in Hope's instrument. Pepys made a number of technical improvements, which he considered insured accuracy, but certainly complicated the apparatus. Volta introduced an instrument which superseded the preceding. He determined the composition of the air by combustion with a known quantity of hydrogen gas. It is founded on the principle that when a mixture of oxygen and hydrogen gases is fired, one third of the diminution is owing to the condensation of oxygen. For this purpose he used a g
Knight's Mechanical Encyclopedia (ed. Knight), O. (search)
bstances that exude from trees, as shea-butter, etc. Used for cooking and burning. CacaoTheobroma cacaoHot climatesThe cocoa-nibs of the shops. Used as a beverage. Afford an oil or butter which can be used for burning. CamelineCamelina sativaEurope, etcOil from the seeds. Used for burning in lamps. CandleberryMyrica ceriferaNorth and Central AmericaThe berries contain a wax-like matter, which is converted into candles, producing an aromatic odor as they burn. Myrica cordifoliaCape of G. Hope Candle-nutAleurites trilobaS. Sea IslandsSeeds contain oil Used for food and for burning in lamps. Are strung on sticks by the natives, and so used as candles. CarapaCarapa guineensisW. Africa, etcSeeds afford oil used by the natives for burning and anointing. In S France made into soap. CocoaCocos nuciferaHot climatesThe oil of the cocoa-nut is the chief material from which composite, stearine, and other candles are made. Used also in soap-making and for railway grease. ColzaBrass