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Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
ole. It is hooked when cat-fall is fast to the ring. It is catted or hauled up when lifted by the ring to the cathead. It is fished when the fluke next to the ship's side is lifted to the fish-davit. It is on-board when the fluke is lifted to its resting-place on the bill-board. It is in-board when on deck. It is secured when all is made fast, the cable and buoy-rope unbent, and the anchor stowed. The weight of Anchor and Kedge is given exclusive of that of its stock. Bower and Sheet Anchors should be alike in weight. Stream Anchors should be 1/4 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 pint
Knight's Mechanical Encyclopedia (ed. Knight), N. (search)
lute acid and laid on the material; pressure transfers the markings of the wood to it, and it is then moderately heated, bringing out the colors. One wetting suffices for twenty or thirty impressions. Nau-ro-pom′e-ter. （Nautical.) An instrument for measuring the amount of a ship's heel or inclination at sea. Nau′ti-cal a-larm′. See fog-alarm; Bilgewater alarm; Iceberg-alarm; shoal-alarm. Nau′ti-cal Ap-pli′an-ces. See — Accommodation ladder.Boot-topping. After-sail.Bower. Alarm.Bow-fast. Anchor.Bow-grace. Anchor-ball.Bowline. Anchor. DragBowline-bridle. Anchor DriftBowsprit. Anchor. Mushroom.Brace. Anchor-tripper.Brace-pendent. Apostles.Brail. Apparel.Breast-rail. Arming.Breaming. Back-rope.Breast-fast. Back-stay.Bridle. Bag-reef.Bridle-port. Bails.Broadside. Balance-reef.Bucklers. Ballast-shovel.Built-up. Balloon-jib.Bull's-eye. Bangles.Bumkin. Barking.Bunker. Beacon.Buntlines. Bear.Buoy. Bearing-binnacle.Buoy-rope. Becket.Bu
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
b is Brown's, 1869, which has metallic springs, thrusting outwardly the elastic break-joint rings, and seated upon a supporting boss. c is Fairbanks's, 1872, having a corrugated expanding spring, screwed fast to the packing-ring at its midlength. Steam-pistons, with different modes of packing. d d′ is Lowe's, 1866, which has a beveled spiral spring, inclosed between a head and follower, and expanding the rings. d′ shows the detached ring expanded laterally and vertically. e, Bower and Qualter's piston, 1866, has springs driven against the rings by the force of wedges at the back. The wedges are set up by screws. f, Hoagland's, 1857. By turning the axial screw the conical shaft is driven against the radial bars, which drive against the springs and expand the circumferential ring. g is Blake's piston, 1871, a part of which is shown with the cover removed. It has screws which force a body of soft vulcanite or metallic springs against the outer rings of the pisto
Knight's Mechanical Encyclopedia (ed. Knight), R. (search)
woody portion and washing away the mucilage. Schenck's retting apparatus, 1851, consists of circular vats, in which the flax is placed, being kept down by a weight while it is swelled by water maintained at a heat of 90° by the introduction of steam Passing to the acetous fermentation, the mucilage is rendered perfectly soluble and is run off, the flax being then removed and dried. The process takes about sixty hours. The flax is exposed to the air upon frames or dried by steam heat. Bower's retting process (English) consists in alternately steeping and rolling the stalks, so as to soften and press out the mucilage by the alternate process. Caustic ammonia, or other salt, is added to the rain water, in which the plant is steeped. (Ammonia, 1 pound; water, at 90° to 120°, 150 pounds.) The process takes about thirty hours Another process consists in the repeated application of an alkaline solution in a vessel exhausted of air. This is said to take but a few hours. Heat i