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Knight's Mechanical Encyclopedia (ed. Knight) 23 1 Browse Search
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the next half-turn, and so on until all the jaws have performed their office, when springs under the jaws force them simultaneously apart as the cams rotate past their centers. It will be seen, by reference to Fig. 449, that the faces of the jaws are dies, exactly corresponding to the twist of the auger. Auger-twisting dies and blank. Auger, square-hole. An auger to cut square holes was described in the Journal of the Franklin Institute, Philadelphia, 1826, as the invention of Mr. A. Branch, of New York. It consisted of a twisted auger operating in a square socket which had a sharp lower edge, and which cut away the margin of the square hole as the auger itself bored a round hole in advance. Hancock's square-hole auger. Hancock's Square-hole Borer (English) was in operation about the same time in London, and operated in a substantially similar manner. a is a strong frame, fastened by screws b to the bench c; d is an octagonal socket tapped to receive the vertical s
ne for braking flax or hemp after rotting, to remove the woody portion and pith from the fiber. See Flaxbrake. Bra′mah-lock. A lock patented by Bramah, in England (1784 and 1798), having a number of slides which are adjusted in the manner of tumblers, by means of a stepped key, so that the slides of unequal length shall be brought into a position where their notches lie in the same plane, that of the lockingplate. See lock. Bra′mah-press. The hydrostatic press (which see). Branch. 1. (Fortification.) a. The wing, or long side of a horn or crown work. b. One of the parts of a zigzag approach. 2. (Blacksmithing.) One of the quarters or sides of a horseshoe. 3. (Harness.) One of the levers attached to the ends of the stiff bit of a curb-bit, and having rings or loops for the curb-chain, the cheek-straps, and the reins. See curb-bit. 4. (Mining.) A small vein which separates from the lode, sometimes reuniting. A leader, string, or rib of ore run
60 Hancock (English)1841Dwelley1865 Nasmyth (English)1839Davidson1860 Petit1840Marsh1864 Birch1840Virdin1859 Carr (English)1841Wilcox1856 Walber1852De Bergues1868 Fuller1859Chatelier1868 Sickels1857Lee1868 Cuney1855Ambler1862 Goodale1865Branch1858 Peddle1867McCrone1865 Car-buf′fer. (Railway.) A fender between cars. In the English practice, the ends of the car-frames carry elastic cushions, or buffer-heads with springs. In our practice the spring is usually behind the drawba to a kind of picture on a translucent material. Opalotype. Chuck. 1. An appendage to a lathe. Being screwed on to the nose of the mandrel, it is made to grasp the work to be turned. There are several varieties, as — Arbor.Geometric. Branch.Oblique. Centering.Oval. Concentric.Plain. Driver.Prong. Eccentric.Ring. Elastic.Screw. Epicycloidal.Surface. Expanding.Universal. An expansion or elastic chuck a, having a certain range of capacity, may be formed by giving a quad
give the advantage to the defending force. Artificial, when labor and skill create advantages or add to the natural ones. Defensive, when opposed to an attacking force. Offensive, in investing a place. Permanent, of a lasting character. Field, for emergency or temporary uses. There is no room here for a treatise; see details under the following heads: — Abattis.Body of a place. Ante-mural.Bomb-proof. Approach.Bonnet. Arrow.Bonnet de pretre. Augette.Boom. Avant-fosse.Branch. Banquette.Bray. Barbacan.Break. Barbette.Breast-hight. Barrier.Breast-work. Bartizan.Bridge-head. Base.Brisure. Basket-work.Bulwark. Bastion.Buttress. Bastioned fort.Caltrop. Batardeau.Camouflet. Battery.Canditeer. Bavins.Capital. Berme.Caponniere. Blind.Casemate. Blindage.Cavalier. Block-house.Cavin. Chamber.Intrenchment. Chemin des rondes.Iron fortification. Cheval de frise.Klicket. Circumvallation.Line. Citadel.Liziere. Coffer.Lodgment. Coffin.Loop-hole. Con
pump and engine and operates the pump. The slide-valves of the engine and pump are actuated by a lever on the common piston-rod, which is tilted by striking the stuffing-box. Hydraulic engine. Hy-drau′lic Engi-neer′ing and De-vi′ces. Absorbing-well.Bonnet. Accumulator.Boom. Aft-gate.Border-pile. Air-lock.Bottle-boot. Ajutage.Bottle-faucet. Alarm-funnel.Bottle-siphon. Alcaraza.Bottle-stopper. Anti-guggler.Bottle-washer. Apron.Bottling-machine. Aquarium.Bowlder-head. Aqueduct.Branch. Archimedean screw.Breakwater. Armor. SubmarineBreakwater-glacis. Artesian well.Breasting. Ash-leach.Bridge. Back.Bubbles. Back-cutting.Bucket. Backwater.Bucket-engine. Bag and spoon.Bucket-wheel. Balance-bar.Bung. Balance-gate.Burette. Ballast-engine.Burrock. Ballast-heaver.Bye-wash. Bank-protector.Caisson. Barker's mill.Camel. Barrack.Camp-sheeting. Barrel-filler.Canal. Barrel-filling gage.Canal-lift. Barrel-washer.Canal-lock. Bascule.Canal-lock gate. Basin.Cane. Hydr<
ht-port. The water-tight shutter by which it is protected in stormy weather is known as a dead-light. 4. A pane of glass. Light and Pho′tic Ap-plian-ces. See under the following heads: — Aphlogistic lamp.Gas-torch. Argand-burner.Girandole Argand-lamp.Head-light. Argand gas-burner.Holophotal light. Astral-lamp.Hydrocarbon-burner. Beale-light.Hydrogen-lamp. Bengal-light.Hydrostatic lamp. Blue-light.Illuminating-clocks. Boccius-lampIlluminator. Bracket.Insect-trap lantern. Branch.Intermittent light. Bude-lamp.Lamp. Bull's-eye.Lamp-burner. Burner.Lamp-chimney. Calcium-light.Lamp-chimney adjuster. Candelabrum.Lamp-cone. Candle.Lamp-elevator. Candle-mold.Lamp-hanger. Candle-stick.Lamp-post. Carbon-light.Lamp-shade. Carbureting-machine.Lamp-tongs. Cata-dioptric light.Lamp-wick. Catoptric light.Lantern. Chandelier.Leading-light. Cigar-lighter.Light. Clock-work lamp.Light-ball. Colored light.Light-barrel. Cresset.Lighter. Gas Cric.Lighthouse. Dark-lante
ord's or Six's. See thermometer. Min′ing Ap-pli′an-ces and terms. See under the following heads: — Adit.Dead-ground. Anticlinal line.Deads. Arch.Dean. Astel.Dike. Astyllen.Dip. Attle.Dip-head level. Auget.Down-cast, Back.Drift. Bank.Dropper. Bar.Drowned level. Barrow.Dums. Basset.Fang. Batch.Fanging. Bed.Fault. Bede.Flang. Bedway.Flookan. Bend.Floran. Blasting.Fluke. Blind level.Foge. Bonney.Gad. Bord.Gallery. Bottom-lift.Gangue. Bottoms.Ginging. Brace.Goaf. Branch.Gob. Brattice.Gobbing. Breast.Gold-mining. Brob.Gold-washer. Brood.Grain-tin. Bunch.Grapnel Burden.Griddle. Cage.Gunnie. Case.Gurnies. Cat-head.Hade. Cauf.Halvans. Caunter-lode.Hanging-side. Channeling-machine.Hard pyrites. Charger.Hard salt Cistern.Heading. Claying-bar.Hitch. Coal-boring bit.Hogger-pipe. Coal-breaker.Holing. Coal-cutting machine.Horns Coal-mining machine.Hushing. Coal-screen.Hutch. Coal-washing machine.Jamb. Coffering.Jinny-road. Coffin.Jump. Corbond<
ne thimble. Billet.Card. Bit.Cart-saddle. Bitting-rigging.Causson. Blind.Cavesson. Blind-bridle.Chaff-halter. Block.Chamfering-tool. Boot.Channeling-tool. Branch.Chape. Breaking-harness.Chapelet. Breast-band.Check-hook. Breast-chain.Check-rein. Breast-collar.Check-rein hook. Breast-strap.Cheek-strap. Breast-strap harth's, May 27, 1873. k, Husbands's, January 20, 1874. l l′, Emerson's, for circular and straight saws respectively. m, Husbands's, January 20, 1874. n, Branch's, March 3, 1874. o, Emerson's, May 26, 1874. p, Husbands's, June 2, 1874. q, Emerson's. r, Husbands's, June 23, 1874. s, Emerson's. t, Dickinsograph-wires. Junctions are arranged for carrying water and gas into each house along the route by pipes conducted through holes in the sides of the subways. Branch pipes are laid on to the street fire-plugs and hydrants, and gas is laid on to the street-lamps. All the usual valves, meters, and other apparatus are accessible
ate p, with which the bristles are in contact. The plate is in communication with the main battery c. The bristles are insulated from each other, and are placed as near together as possible. From the platinum point with which each transmitter comes in contact in making the circuit, wires q q lead to the line wire r. At the other end of the line is a series of receiving-instruments s s corresponding in number to and having armatures vibrating in consonance with those of the transmitters. Branch wires connect the receivers with the main line wire r. In connection with each receiver is a local circuit comprising an electro-magnet t and a vibratory lever u, one arm of which constitutes the armature of the magnet, and the other arm terminates in a stylus which normally rests upon an inkribbon v over the bed of the receiving-table w. The stylus-armed ends of the levers converge, so as to be in the same relative position, and about as near together as the metallic bristles at the transmi