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Knight's Mechanical Encyclopedia (ed. Knight), B. (search)
the rod to the blind. The blind-frame a is held by adjustable slides, and the rod b, with its staples or rings already inserted, is laid along upon the slats e, the rings presented sideways. The staples to be driven straddle the wire h and feed down it, being driven one at a time by the lever c and plunger d, so that one leg of the staple passes through the eye on the rod b, and both of them enter the slat e. The frame is fed forward the distance between the slats after each operation. Crosby's blind-wirer. Fig. 720 shows a somewhat similar form of machine in which the staples feed down the incline h, and are driven into the slats e as the lever c is depressed. The lifting of the lever moves forward the blind-frame by means of a pawl which engages the rack m. Blink′er. （Saddlery.) A blind. Blis′ter-steel. Steel formed by roasting bariron in contact with carbon in a cementing furnace. It is so called from its blistered appearance. To improve the quality, it is<
Knight's Mechanical Encyclopedia (ed. Knight), L. (search)
aring, and a grinding plate at its lower end, which works against a grinding surface attached to the lower end of the tube. Above the mouth of the vessel is a wheel which removes the waste ore as it rises to the surface of the molten lead. In Crosby's apparatus the bulbous vessel contains a lead-bath, and is supported in the furnace. The tubular conductor has a disk on its lower end, against which rotates a grinding-plate attached to the vertical axial-shaft. The ore passes down the tube, openings in the side of the ladle, and the combined mineral and metal are triturated together between the grinding-surfaces, the precious metals becoming amalgamated with the lead while the refuse mineral rises to the top and is skimmed off. Crosby's lead-bath. Lead-cut′--ter. （Printing.) A knife for cutting leads which are held in a tray the while. Lead′er. 1. (Pyrotechnics.) A long paper tube of small diameter, enclosing a strand of quick match, used for communicating fire <
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
of rollers, from which it is carried by endless bands to a second knife between a second set of foldingrollers, and finally deposited in a trough. Birchall's English patent of 1847 shows mechanism for folding the sheet by a reciprocating knife into folding-rollers. Black (English), 1850, had registering-pins, which were vibrated out of the sheet. See also Smith's patent, November 27, 1849; Snow, October 15, 1850; English patent No. 13,315, for 1850; North's patent, October 15, 1856; Crosby, December 23, 1856; Smith, May 19, 1857; North, August 10, 1858; Endriss, March 8, 1859. Chambers, 1856, had registering-pins to fit the perforations made by the printing-press. (See point.) These pins or points are adjustable, and, as the folding-blade descends, recede by a cam movement. Chambers's machine (Fig. 3531) is adapted to fold large double-sheet papers. The sheet to be folded is spread upon the folding-table, and the register secured by points. The folding-blade overhead
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
6, 1859. 25,782WoodwardOct. 11, 1859. 25,885CrosbyOct. 25, 1859. 28,920ToggenbergerJan. 26, 18601, 1868. 89,357SwartwoutApr. 27, 1869. 90,507CrosbyMay 25, 1869. 94,134RichardsonAug. 24, 1869. , 1871. 124,293SheffieldMar. 5, 1872. 124,337CrosbyMar. 5, 1872. 124,338CrosbyMar. 5, 1872. 126,ay 26, 1857. 18,522RoperOct. 27, 1857. 21,745CrosbyOct. 12, 1858. 24,324MoodyJune 7, 1859. (Reissue.)4,305CrosbyMar. 21, 1871. 156,418GarlandNov. 3, 1874. 159,317Garland et al.Feb. 2, 1875. .) Reciprocating Blades. No.Name.Date. 36,074Crosby et al.Aug. 5, 1862. 37,033Crosby et al.Dec. 2Crosby et al.Dec. 2, 1862. 37,550PipoJan. 27, 1863. 46,424RobjohnFeb. 14, 1865. 50,225CrosbyOct. 3, 1865. 50,473HecCrosbyOct. 3, 1865. 50,473HechtOct. 17, 1865. 58,376CaryOct. 2, 1866. 89,085ScharffeApr. 20, 1869. 93,063DavisJuly 27, 1869. 39,883DaltonJune 17, 1873. (Reissue.)5,448Crosby et al.June 17, 1873. 140,285LewittJune 24, 18e latter is prevented. Piston-gages. C, Crosby's gage. The spring-tube is arranged in a mann[4 more...]