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Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
on the fall-block hook, and is belayed to a pin on the cat-head. When the fall is cast loose, and as soon as the slack of the tripping-rope is exhausted, the said rope upsets the hook, and casts loose the anchor. Stacey's anchor-tripper. Holmes, April 28, 1857. A short chain is attached to the ring of the anchor, and the link on its upper end is transfixed by a pin which has its bearings in a block. By turning the handle half a revolution in one direction, the screw upon the shaft will cause the pin to recede, and disengage itself from the link of the chain. The thread works in a spiral groove or nut, by which it receives longitudinal motion when partially rotated. Holmes's anchor-tripper. Heitman's anchor-tripper. Heitman, May 16, 1865. The anchor is suspended by a shank-painter and a ring-stopper. One end of each chain is fast to the vessel, while the ring at its other end rests upon a pivoted latchpiece. These latch-pieces are supported upon a bar, which is r
Knight's Mechanical Encyclopedia (ed. Knight), L. (search)
r of boiler-iron resting on a platform at the top of the columns. Lighthouse at Trinity shoals. The following is a list of the electric lights in England and France, with the dates at which they were erected: Dungeness, January, 1862; Cape La Heve, France, South Light, December, 1863, North Light, November, 1866; Cape Grisnez, France, February, 1869; Souter Point, England, January, 1871; South Foreland, England, with two lights, January, 1872, in the first place in 1858 – 60 by Professor Holmes, and afterward England took the lead in this matter of the adaptation of electric illumination to lighthouse purposes. The Bishop rock light, Scilly Islands, the old Cassiterides of Herodotus, 145 feet high, cost £ 36,559. In the British Isles there are 357 shore lights and 47 floating lights. The French have 224 shore lights. The average annual expense in England of a shore light is £ 500; of a floating light, £ 1,200. The lighthouses of the world are estimated at 2,814. Heigh
Knight's Mechanical Encyclopedia (ed. Knight), N. (search)
rning.) A lathe-tool a having a circular expansion with a sharp edge, causing it to resemble, in a degree, a nail-head. One edge is supported on the rest b, and the other is applied to the work to be turned. Nail-head tool. Nail′ing-ma-chine′. 1. (Carpentry.) A machine in which, the parts of a box being placed in the proper relation, plungers advance and drive the nails which secure the sides of the box together, and the sides to the bottom. Similar machines (see Rice's and Holmes's patents) are used for driving the legs of a wash-board against the sharpened edges of the corrugated zinc plate, sinking the zinc into the legs; an immediately succeeding motion forces the nails which secure the legs to the other portions. The nails are fed into grooves from hoppers, and the drivers advance along the grooves and complete the operation. 2. (Shoemaking.) A machine which acts automatically to drive the nails into shoe-soles. The nails are fed from a hopper, or are cut,
Knight's Mechanical Encyclopedia (ed. Knight), W. (search)
49,382.Cooley et al., 1865. 52,046.Holmquist, 1866. 53,217.Eddy, 1866. 53,267.Buell, 1866. 54,194.Myers, 1866. 55,216.Ransome, 1866. 57,960.Perry, 1866. 58,203.Benjamin, 1866. 60,794.Samuels, 1867. 4,158.Samuels (reissued), 1870. 62,334.Holmes, 1867. 62,956.Harvey, 1867. 63,300.Prindle, 1867. 64,703Pustkutchen, 1867. 65,545.Constant et al., 1867. 67,104.Clarke et al., 1867. 68,069.Harding, 1867. 69,260.Seeley, 1867. 70,761.Taylor, 1867. 73,246.Harmyer, 1868. 73,585.Beer, 1868homas, 1871. 115,784.Tait, 1871. 115,931.Brown, 1871. 116,274.Constant et al, 1871. 118,245.Jones, 1871. 118,528.Gyles, 1871. 120,069.Sutphen, 1871. 123,009.Fawcett et al., 1872. 123,467.Fuechtwanger, 1872. 124,980.Pelton, 1872. 124,358.Holmes, 1872. 124,402.Waterbury, 1872. 124,449.Cole, 1872. 124,120.Cole, 1872. 127,482.Hayford, 1872. 128,387.Gyles, 1872. Wood-saw. See saw; and for varieties, see list on page 2035. Wood-scrap′ing ma-chine′. Fig. 7342 is a machine f