| 单词 | crosshead |
| 例句 | As the crosshead says, if you’re not paying for the product, you are the product. Microsoft Office for iPad: who's it for? 2014-03-28T10:28:00Z Using insider secrets such as signposts, building blocks, crossheads and sequential writing will raise the bar of your blog articles overnight. Upgrade Your Blogging Skills 2013-04-24T16:35:06Z Tires are bored, centres turned, axles finished, and crossheads, guides, guide-bearers, pistons, connecting- and parallel-rods planed, slotted, or finished, by the same method. Illustrated Catalogue of Locomotives Baldwin Locomotive Works 2012-04-03T02:00:35.800Z The two rams of these cylinders pass through the ends of, and carry, a crosshead, upon which the main ram rests. Scientific American Supplement, No. 648, June 2, 1888. 2011-12-26T03:00:15.410Z In its motor and only cylinder, which is horizontal and open-ended, works a long trunk piston, the front end of which carries the crosshead pin. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z If the rod could be driven in until the shoulder is, say, 1/8 inch from the crosshead face, it would then be near enough to finish to size by filing. Turning and Boring A specialized treatise for machinists, students in the industrial and engineering schools, and apprentices, on turning and boring methods, etc. The piston rod and the crosshead obviously passed through its gun deck in a large hatch. Fulton's "Steam Battery": Blockship and Catamaran Both crossheads were originally of cast iron but one of these has been replaced and is of steel. The 'Pioneer': Light Passenger Locomotive of 1851 United States Bulletin 240, Contributions from the Museum of History and Technology, paper 42, 1964 The two lifting rams are made long enough to pass through holes in the top casting, and thus form guides to the crosshead and mandrel. Scientific American Supplement, No. 648, June 2, 1888. 2011-12-26T03:00:15.410Z The crosshead and the chains, weighing more than 50 tons, descended with a fearful crash upon the press, and the tube itself fell down upon the packing p. 338beneath. Lives of the Engineers The Locomotive. George and Robert Stephenson After the crosshead end is finished, the rod is reversed in the lathe for turning the piston end. Turning and Boring A specialized treatise for machinists, students in the industrial and engineering schools, and apprentices, on turning and boring methods, etc. The cylinder crosshead is shown in the inboard profile to have reached the underside of the beams of the upper deck. Fulton's "Steam Battery": Blockship and Catamaran Top left, straight-line linkage; top right, crosshead and guide arrangement; lower left, piston rod A is guided by sectors D and E, suspended by flexible cords. Kinematics of Mechanisms from the Time of Watt This large upward force is required for stripping the tubes off the mandrels, in addition to raising the main ram crosshead, etc. Scientific American Supplement, No. 648, June 2, 1888. 2011-12-26T03:00:15.410Z The connecting rod operates a crosshead to which is pivoted a pitman, or oscillating rod, that operates the paddle-wheel crankshaft. The Pioneer Steamship Savannah: A Study for a Scale Model United States National Museum Bulletin 228, 1961, pages 61-80 The casting D, shown in this particular illustration, is for a steam engine of the horizontal type, and the operation is that of boring the cylindrical guides or bearings for the crosshead. Turning and Boring A specialized treatise for machinists, students in the industrial and engineering schools, and apprentices, on turning and boring methods, etc. The crosshead was connected by two connecting rods to the side levers. Fulton's "Steam Battery": Blockship and Catamaran Large metal planing machines were well known by 1830, and by midcentury crossheads and crosshead guides were used on both sides of the Atlantic in engines with and without working beams. Kinematics of Mechanisms from the Time of Watt Referring to the engraving, the main cylinder is seen at the top with the main ram carrying the crosshead, to which are connected the two lifting rams, the cylinders for which extend below ground. Scientific American Supplement, No. 648, June 2, 1888. 2011-12-26T03:00:15.410Z Alongside the steam cylinder is an air pump cylinder, also connected to the crosshead. The Pioneer Steamship Savannah: A Study for a Scale Model United States National Museum Bulletin 228, 1961, pages 61-80 A hydraulic press was placed below the column and its crosshead above it, and then a hinged oven containing twelve large gas burners was clamped about the column. Scientific American Supplement, No. 1157, March 5, 1898 “We may possibly get rid of the water below, but the crosshead bearings are working loose, and I’d like to know who’s going to give me a new gudgeon pin?” The Ghost Ship A Mystery of the Sea The crosshead of the reciprocating air pump is guided by a Peaucillier linkage shown at the center. Kinematics of Mechanisms from the Time of Watt Who sells a tool for truing up a crosshead wrist? Scientific American, Volume XXXVI., No. 8, February 24, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. To help steady the crosshead, these shoes probably were a foot or more long, for the loading of the crosshead is spread out. The Pioneer Steamship Savannah: A Study for a Scale Model United States National Museum Bulletin 228, 1961, pages 61-80 The tiller, D, as it is carried to starboard or port, slides through a socket, E, pivoted to the crosshead. Scientific American, Volume 40, No. 13, March 29, 1879 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures This important object is attained in the gear under notice chiefly through the arrangement of the quadrant and the spring buffers, which form an essential part of it, and of the tiller crosshead. Scientific American Supplement, No. 1178, June 25, 1898 The condensers are placed at the outsides of the engine room, and the air, feed, and bilge pumps are between the engines and the condensers and worked by levers from the low-pressure engine crosshead. Scientific American Supplement No. 819, September 12, 1891 Adjusting the Guides.—Put the connecting rod in place on its pins, and revolve the crank until the guides have taken up that position which allows the crosshead to move freely. Things To Make Between each pair would have been the iron track, or channel, in which the ends of the crosshead travelled, along the axis of the engine in elevation. The Pioneer Steamship Savannah: A Study for a Scale Model United States National Museum Bulletin 228, 1961, pages 61-80 To the crosshead is also coupled a lever having its fulcrum on a bracket attached to the boiler; this lever serving to work the feed pump. Scientific American Supplement, No. 470, January 3, 1885 The rack and pinions are of cast steel, as is also the tiller crosshead. Scientific American Supplement, No. 1178, June 25, 1898 The crosshead runs in guides made from a piece of gas pipe with the sides cut out and threads cut on both ends. The Boy Mechanic: Volume 1 700 Things for Boys to Do Then pass the rod through the gland and assemble the crosshead and fork on its end, and assemble the guides round the crosshead foot. Things To Make The crosshead was of iron and probably had shoes at the ends to work in the tracks or channels in the frame. The Pioneer Steamship Savannah: A Study for a Scale Model United States National Museum Bulletin 228, 1961, pages 61-80 The piston rod is attached to a long cast-iron crosshead, from which two bent connecting rods extend downward, the one to a crank, and the other to a crank-pin inserted in the flywheel. Scientific American Supplement, No. 470, January 3, 1885 The spring buffers, which, as has been said, form an essential part of the quadrant, are fitted with steel rollers at the point of contact with the crosshead, thereby reducing the friction to a minimum. Scientific American Supplement, No. 1178, June 25, 1898 This long frame had to be made to accommodate the crosshead which was necessary for such a short cylinder. The Boy Mechanic: Volume 1 700 Things for Boys to Do Roller bearings should be placed between the bearing blocks and the knife edges of the crosshead to allow for the shortening due to flexure. The Mechanical Properties of Wood Including a Discussion of the Factors Affecting the Mechanical Properties, and Methods of Timber Testing This a straight line direct-acting engine, with steam and air pistons connected to a single rod through a crosshead which connects with two fly wheels. Scientific American Supplement, No. 799, April 25, 1891 From this statement it is also readily inferred that the path of any point between the centers of the crank and crosshead pins will be neither circular nor straight, but an elongated curve. Scientific American Supplement, No. 595, May 28, 1887 The line at Weston consist of a series of posts, 60 ft. apart, with two lines of rods or ropes, supported by crossheads on the posts. Scientific American Supplement, No. 417, December 29, 1883 For attachment to swing-frames the saws have buckles riveted to them; these are by various modes connected to the crossheads. Scientific American, Volume 22, No. 1, January 1, 1870 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. At the lower ends of these screws are geared nuts all rotated simultaneously by a system of gears which cause the movable crosshead to rise and fall as desired. The Mechanical Properties of Wood Including a Discussion of the Factors Affecting the Mechanical Properties, and Methods of Timber Testing The strains are direct and the power and resistance are equalized by the inertia of the crosshead, piston, rods, and fly wheels. Scientific American Supplement, No. 799, April 25, 1891 The air and circulating pumps are bolted to the back of the condensers, and are worked by levers from the engine crosshead. Scientific American Supplement, No. 430, March 29, 1884 The crosshead slides are each 3 feet 3 inches long and I foot 3 inches wide. Scientific American Supplement, No. 286, June 25, 1881 The edge of the crosshead upon which the keys bed is steeled to lessen the wear invariably ensuing from frequently driving up the keys. Scientific American, Volume 22, No. 1, January 1, 1870 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. The stationary part of the straining mechanism, which is used only for tension and cleavage tests, consists of a steel cage above the movable crosshead and rests directly upon the weighing platform. The Mechanical Properties of Wood Including a Discussion of the Factors Affecting the Mechanical Properties, and Methods of Timber Testing In the engine room there are six steam pumps, two of them bilge pumps, worked by the main crossheads, for clearing the engine room of water. Scientific American Supplement, No. 799, April 25, 1891 The condensers form part of the engine frame, and have guide faces cast on for the crosshead shoes. Scientific American Supplement, No. 430, March 29, 1884 The two engines are identical in design, and are constructed of forged steel with the exception of the bearings, connecting-rods, crossheads, slide valves and pumps, which are of phosphor-bronze. Scientific American Supplement, No. 286, June 25, 1881 Each top buckle is passed through the crosshead and is pierced with a mortise for the reception of a thin steel wedge or key, by whose agency the blade is strained and tightened. Scientific American, Volume 22, No. 1, January 1, 1870 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. The top of the cage contains a square hole into which one end of the test specimen may be clamped, the crosshead containing a similar clamp for the other end, in making tension tests. The Mechanical Properties of Wood Including a Discussion of the Factors Affecting the Mechanical Properties, and Methods of Timber Testing Besides, the engine crosshead's worn and jumps about. Lister's Great Adventure And deep in the half-light other rods dodged deliberately to and fro, crossheads nodded, discs of metal rubbed smoothly against each other, slow and gentle, in a commingling of shadows and gleams. Typhoon The standards, as will be seen, are of very light T steel, the crankshafts and pins are hollow, as are also the crosshead bolts and piston rods. Scientific American Supplement, No. 286, June 25, 1881 One saw the big columns shake and strain as the crosshead shot up and down; the thrust-blocks groaned with the back push of the propeller. Lister's Great Adventure |
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