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Knight's Mechanical Encyclopedia (ed. Knight), B. (search)
ardly alongside the furnace-jacket and beneath the steam-jacket of the pan. The following United States patents may be consulted:— Guiteau1842.Garrison1862. Hull1855.Hull1863. Humphreys1856.Farrar1863. Heims1859.Platt1869. Pratt1862.Gilson1870. Chapin1862.Howarth1871. Brine-pump. （Steam-engine.) A pump worked bHull1863. Humphreys1856.Farrar1863. Heims1859.Platt1869. Pratt1862.Gilson1870. Chapin1862.Howarth1871. Brine-pump. （Steam-engine.) A pump worked by the engines to withdraw the super-salted water from the boilers mechanically, instead of by periodical blowing off. Maudslay and field's English Patent, 1824<, describes a brine-pump with a loaded dischargevalve worked by the engine, and so proportioned as to draw from the lower part of the boiler the quantity determined on, k-wag′on. （Vehicle.) A rude wagon formed of a single board resting on the axletrees, and forming by its elasticity a spring seat for the driver. Buck′wheat Hull′er. A form of mill, or an ordinary grinding-mill with a particular dress and set of the stones, adapted to remove the hull from the grains of buckwheat,
Knight's Mechanical Encyclopedia (ed. Knight), C. (search)
machine for tearing the remaining fiber from the cotton-seed, or one which so far compacts the fiber upon the seed that the latter will roll upon itself without making a mat, and so become fitted to be sown by an ordinary machine. Cot′ton-seed Hull′er. A machine by which the hull of the cotton-seed is rasped off and sifted from the farinaceous and oily matters, which are utilized for their oil and the refuse for manure. The kernels pass through the screen, while the coarser hulls and fiIt must be recollected, however, that among the oldest Egyptian paintings is the representation of Thoth forming man upon the potter's wheel. Cranks. The crank was first used with the steam-engine on board the paddle-wheel steamboat of Jonathan Hull (English patent, December 21, 1736, No. 556). It did not revolve, but reciprocated, and formed an intermediate between the rope, which was pulled by the descent of the piston, when a vacuum was created in the Newcomen atmospheric engine and t
Knight's Mechanical Encyclopedia (ed. Knight), D. (search)
l post and swings 90°, opening two passages for vessels, one on each side. This is a pivot-bridge. 3. The bascule-bridge turns on a horizontal pivot, standing in a vertical position on the side of the water-way while the vessel passes by. The inner end is in excess of the weight of the roadway and descends into a pit built with hydraulic masonry. This pit is not material, perhaps, in fortifications, but is not desirable in ordinary road or dock work. The bascule may be seen at Havre and Hull. See Basculebridge. Rolling-bridge. 4. The rolling-bridge has been introduced on some English railways. The bridge passes laterally upon a carriage until it has passed the junction of the line of rails, and then rolls inward to leave the water-way clear. In the example, the movable cars or platforms are suspended by rods and form traveling trucks, which run upon rails laid on the top of metallic tubes supported on pillars, and which serve also as viaducts, by which means the crossi
Knight's Mechanical Encyclopedia (ed. Knight), H. (search)
guard, convict, quarantine, custom-house, storage, victualing, or other purposes. A sheer-hulk is one fitted with sheers for masting and dismasting vessels. Hull. （Shipbuilding.) The body of a vessel, exclusive of its masting, rigging, etc. A dismantled hull is a hulk. Barley-huller. Hull′er. See hulling-machiHull′er. See hulling-machine. Hull′ingma-chine′. （Agriculture.) A device for removing the cuticle from grain, and for breaking it without reducing it to the condition of meal. In the time of Pliny a mortar was employed for this purpose, sand or pieces of brick being placed therein to assist the trituration. Foreign substances, including the husk Hull′ingma-chine′. （Agriculture.) A device for removing the cuticle from grain, and for breaking it without reducing it to the condition of meal. In the time of Pliny a mortar was employed for this purpose, sand or pieces of brick being placed therein to assist the trituration. Foreign substances, including the husk and bran, were removed by sifting. For this purpose, the Egyptians used sifters made of papyrus and rushes, the ancient Spaniards of flax, and the Gauls invented sieves of horsehair. The Scotch pearl-barley mill is shown in Fig. 2606, A being a section of the cylinder, and B a perspective of the machines in operatio
Knight's Mechanical Encyclopedia (ed. Knight), O. (search)
r-tho-pae′dic Ap-pa-ra′tus. （Surgical.) A device to correct the deformities of children, such as curved spine, club-foot, etc. See club-foot apparatus. Os′cil-lat-ing—cyl′in-der Steam—en′gine. （Steam.) A simple form of engine, in which the cylinder rocks on trunnions and the piston-rod connects directly to the crank. It was invented by James Watt, and was brought into use by Maudslay. Watt's model, made at Soho in 1763, was exhibited at the London Exhibition of 1851. Witty of Hull patented the oscillating cylinder in England in 1813. English patent, June 5. Goldsworth Gurney was in some way associated with the improvement of it, and has been credited with the invention. It was introduced by those two famous makers of marine and river engines, Maudslay and Field and Penn and Sons. This engine has a cylinder mounted on gudgeons or trunnions, generally near the middle of its length, on which it is capable of swaying to and fro through a small arc, so
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
and the depth of each paddle 1/8 of the diameter. The first use of paddle-wheels may have been in the velocimeters of the ancients, in which an axis crossed the vessel, projecting over each side, and had paddle-wheels four feet in diameter, which dipped into the water and were rotated by the progress of the vessel. A tooth on the axis worked a train of gearing, so as to drop a ball at every 400th revolution of the paddle-wheel, indicating by sound and count the distance traveled. Jonathan Hull, in his English patent of December 21, 1736, describes his boat as driven by a fireengine, meaning a Newcomen atmospheric engine, which rotated six fanns that turn upon an axis, .... the fanns are brought into and keep a direct motion in the water which forces forward the vessell in which the machine [steam-engine] is placed. The paddle-wheel has been a favorite subject with inventors, the aim having been to enable it to enter the water without percussion and to leave it without raisi
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
1874. (Reissue.)6,005RoseAug. 11, 1874. 161,632PalmerApr. 6, 1875. 5. Guides. 13,275RobinsonJuly 17, 1855. 16,586HullFeb. 10, 1857. 31,185MunsonJan. 22, 1861. 31,366BarnumFeb. 12, 1861. 38,705WagenerMay 26, 1863. 40,464FishNov. 3, 1863. Hooding-end.Rising Hook.Rising-floor. Horse-iron.Rising-line. Horseshoe-clamp.Rising-square. Horsing-up.Rising-wood. Hull.Risings. Hurricane-deck.Room and space staff. Hydraulic block.Rough-tree rail. Ice-breaker.Round-house. Independent pildGermanEffective steam pressure on piston in non-condensing engine.1720 AllenEnglishSteamboat (hydraulic propeller）1730 HullEnglishSteamboat (stern-wheel）1737 SmeatonEnglishBoiler with flues1750 BernouilliFrenchSteamboat (artificial fins）1757 Gt he still kept the trough extending from stem to stern of the boat but abandoned the wheel forward of the engine and also Hull's chains and pulleys, adopting instead the double-acting steam-engine, connecting-rod, and crank invented by Watt some yea<