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Knight's Mechanical Encyclopedia (ed. Knight) 26 0 Browse Search
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ribbed plates which are fastened to interior concave stringers by bolts passing through the stringers and into metallic tubes between them; each plate has a lap at its edge to fit the corresponding edge of the next plate, to which it is riveted. The nuts are on the outside. Ballard's armor, June 24, 1862, consists of a series of inner iron ribs A A, with interposed wooden frames B B, longitudinal covering bars or plates C C, diagonal bars or plates D E, and outer covering plates F F. Hotchkiss's armor. Hotchkiss's Metallic Defensive armor for vessels and fortifications is formed by a series of plates, in which the lower ones over lap the higher, so that when any one of them is struck by a projectile, the projecting edge may become detached, glancing the shot on to the next plate, by which it is further deflected and prevented from penetrating the armor. The cut represents the action of a cylindrical bolt whose edge has impinged upon one of the lapping plates; the dotted lin
or rifled than for smooth-bore arms, the former in some cases amounting to .15, and the latter usually to .025 of an inch. Of the class adapted for rifled guns, those most prominent during the late civil war in this country were the Parrott, Hotchkiss, and Shenkl. See shell. Projectiles for rifled cannon may be given a rotary motion by the expansion of a soft metallic sabot at the rear, or by means of studs cast on or affixed to the shell. The former by their expansion at the moment ofring fill the grooves, while the latter are necessarily compelled to follow the grooves, being unable to leave them without being torn away. Fig. 1069 shows a few of the numerous kinds of cannon-projectiles which have been devised. a, the Hotchkiss. At the moment of firing, the wedge-shaped piece, shown in section, is driven forward, expanding a soft metal ring which fills the grooves. b b, the James. The gas passes through the aperture at the back, driving out a number of pins, whic
ateMay 11, 1869. 90,381J. D. S. NewellMay 25, 1869. *92,013B. BurtonJune 29, 1869. 92,048M. J. HindenJune 29, 1869. *92,129W. G. WardJune 29, 1869. 93,822B. B. HotchkissAug. 17, 1869. 94,047S. F. Van ChoateAug. 24, 1869. 94,458W. G. WardAug. 31, 1869. 94,577F. V. DiazSept. 7, 1869. 97,167A. A. ChussepotNov. 23, 1869. 97,734W. G. WardDec. 7, 1869. *97,821W. S. SmootDec. 14, 1869. 99,504W. G. WardFeb. 1, 1870. 99,898B. B. HotchkissFeb. 15, 1870. 101,826J. J. CloesApr. 12, 1870. 103,488A. MullerMay 24, 1870. *103,504O. M. RobinsonMay 24, 1870. 104,100K. V. BarnekooJune 14, 1870. 108,836P. SchulerNov. 1, 1870. 108,869H. BerdanNov. 1, 1870. 10 8, 1871. *118,152J. RiderAug. 15, 1871. *119,020W. R. EvansSept. 19, 1871. 119,098Horace UpdegraffSept. 19, 1871. 120,788W. S. SmootNov. 7, 1871. 122,465B. B. HotchkissJan. 2, 1872. 122,470James LeeJan. 2, 1872. 122,717A. T. FreemanJan. 16, 1872. 124,994Eli WhitneyMar. 26, 1872. 125,229John F. ThomasApr. 2, 1872. 126,446
, one of the forms of this weapon in use in Europe, has ten barrels similarly arranged; the working of the machine being performed by a crank which, through intermediate devices, conveys the cartridges to the barrels from the box-like magazine at the rear of the barrels upon the mounted frame or carriage. The barrels, after each discharge, are cleaned by special appliances; the entire number of barrels can be discharged from eighteen to twenty times a minute. Abbertini mitrailleur. Hotchkiss's mitrailleur is a bundle of rifled cannon, throwing explosive shells weighing 23 1/2 ounces at the rate of 60 in 48 seconds. It is mounted and rotated like the Gatling gun, but the loading and firing apparatus differ from the latter. It has been tried experimentally in France and Italy. Taylor's machine-gun is shown at Fig. 3185. The charging-blocks, one of which is shown on the shelf on the trail of the gun, are filled with cartridges automatically from a magazine carried in the c
2,387ChaplinFeb. 6, 1866. 59,879VincentNov. 20, 1866. 83,742StoddardNov. 3, 1868. 93,147WendellJuly 27, 1869. 93,202HotchkissAug. 3, 1869. 95,409AngellOct. 5, 1869. 100,904KassonMar. 15, 1870. 102,273KellogApr. 26, 1870. 103,538AndersonMay 3nd lands of the gun, leaving a very small windage, which is entirely overcome by the expansion of the cup on firing. Hotchkiss, 1862 (f). The shell is made in two parts, the front one being thinned at the rear and surrounded by a soft metal ring, abutment for the soft metal sabot, which has an annular groove and is attached to the spheroidal base of the shell. Hotchkiss, 1865 (n). A disk of soft material is interposed between the base-piece and the body of the projectile, to gradually ch one corner of the throat and terminate at the diagonally opposite corner. This form is seen in the early patents of Hotchkiss, August 2, 1808, and January 18, 1817. V-knife straw-cutter. Angular-knife straw-cutter. Fig. 5955 may be given
res the speed, or force rather, of a current of air. b. The rotary-pump principle. Walker, No. 68,265, of 1867. c. The log. A chip on the end of the log-line or train of wheels to register revolutions and consequent length of line out. Hotchkiss, No. 45,042, November 15, 1864; Lozier, No. 41,932, March 15, 1864; Barnare, No. 93,513, August 10, 1869. See log. d. Vanes actuated by current. St. John, No. 8,085, May 13, 1851; Pierce, No. 128,324, June 25, 1872. e. A flap-valve opehed together by bolts. Vulcanizing Flasks and Molds. No.Name and Date. 39,481.Howells, Aug. 11, 1863. 30,787.Hayward, Nov. 27, 1860. 84,209.Moulton, Nov. 17, 1868. 105,971.Osgood, Aug. 2, 1870. 139,579.Hopkins, June 3, 1873. 115,207.Hotchkiss et al., May 23, 1871. 91,134.Hurd, June 8, 1869. 140,494.Gately, July 1, 1873. 22,976.Putnam, Feb. 15, 1859. 28,428.Warren, May 2, 1860. 53.667.Peer, April 3, 1866. 52,107.Wood, Jan. 16, 1866. 79,816.Edson, July 14, 1868. 35,821.Hayes,