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Knight's Mechanical Encyclopedia (ed. Knight) 12 0 Browse Search
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Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
the weight of the best bower. Kedges are light anchors used in warping. 2. The block, frame, or masonry deeply buried in the earth, to which the cables or wires of suspension-bridges are attached. See anchor, suspension-cable. Anchor and Col′lar. A form of hinge for a lock-gate. The anchor is let into the stone coping; the collar is attached like a clevis to the anchor, and forms a socket for the pintle of the heel-post of the gate. An′chor-ball. 1. A contrivance of Captain Manby, R. N., for saving life in cases of shipwreck. It is a ball having several hinged prongs fitting in slots, which are intended to catch in the rigging of a stranded vessel. It is fired from a mortar, and carries a light line by which a stout rope may be carried ashore from the vessel. The French use a ball for this purpose having a harpoon passing through it, on the rear end of which a line is wound. 2. A carcass or incendiary ball affixed to a grapnel by which it is intended to
Knight's Mechanical Encyclopedia (ed. Knight), I. (search)
ed by rivets. The stem and stern-post were of wood, the beams of elm planks. Her weight was 8 tons, capacity 32 tons; she drew 8 to 9 inches of water when light, and plied on the Birmingham Canal. An iron pleasure-boat was launched on the Mersey in 1815 by T. Jevous of Liverpool. It was scuttled by jealous shipbuilders, and an iron life-boat launched by the same person in 1817 experienced the same fate. The first iron steam-vessel launched and put to sea was projected and built for A. Manby of Staffordshire, for the river Seine, in 1821. She took in a cargo of linseed-oil and iron castings, and was navigated direct from London to Havre, and from that port proceeded to Paris, where she discharged her cargo. She navigated the Seine for many years, and may yet. The iron steamboat Alburkah, for the Lander Expedition up the Niger, was built in 1831. She was 70 feet long, 13 feet beam, and 6 1/2 feet deep. When launched she drew 9 inches of water; when equipped she drew 40 in
Knight's Mechanical Encyclopedia (ed. Knight), L. (search)
lifepreserver, consists of four pieces of bamboo, about a man's length, placed at right angles in parallel pairs, and tied firmly at the four corners, leaving an opening for the body. so that one pair of bamboos rests beneath the armpits. Captain Manby's apparatus is used in England to communicate with stranded or shipwrecked vessels. A shot thrown by a mortar has a line attached to it, and being thrown over the vessel the line is the means of hauling a rope on board, and thus communicatiothe rope. (See life-car. Light-balls are thrown up and explode by fuse at a hight of 300 yards, so as to illuminate a large area and afford a view of the vessel in distress. The apparatus has been the means of saving several hundred lives. Captain Manby died November 18, 1854, aged 89 years. For apparatus to enable a person to traverse foul air without inspiring it, see inhaler. Stoner's life-preserver is of india-rubber, and made in one piece, the only openings being in the headpi
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
e heat, and thus burned as auxiliary fuel. Fig. 5641 is a coiled pipe mash-boiler for brewers' use. The supply steam-pipe b and the discharge water-pipe c enter at the same opening in the boiler, the latter within the former, and each is so coupled with the semicircular sections of coiled pipe f f as to form hinges upon which the said coils swing. Liquid carbon steam-boiler. To obviate the destructive effect of the fire upon the boiler-plates, several plans have been proposed. Manby, English patent, 1821, caused a circulation of hot oil through the boiler. The oil was heated in a close vessel, and conducted by a pipe to a vermicular system of pipes in the boiler, again descending to be reheated, keeping up a continuous circulation. Alban's English patent, 1825, has a number of vertical tubes, closed below and opening above into a common steam pipe. These tubes are plunged into a cistern of lead, which is kept in a melted condition by a furnace beneath. The water-p
Knight's Mechanical Encyclopedia (ed. Knight), T. (search)
s on to a scaffold or building. In conveying freight upon a track wire (see wire-road), — a mode which has lately come into use. In conveying to a part of the barn or mow a load of hay lifted by a horse hay-fork. See hoisting-machine. Traversing-jack. In supporting barn and warehouse doors, which slide open instead of oscillating on hinges. The pulley is arranged to run upon a rope, rod, or wire, the object to be conveyed being suspended therefrom. In the illustration, Captain Manby's pulley is shown. It is capable of being opened, so as to be placed over the rope instead of reeving the rope through it. It was designed for the Captain's life-saving apparatus, in which a cradle is made to traverse on a rope stretched between a stranded ship and the shore. In cases where the pulley is not liable to be unshipped, the pulley-block may have one cheek cut away like a snatchblock, to allow it to be placed in running order upon the rope. Trav′ers-ing Screw–jack. S<