How to Manage a Steam-engineWyman, 1880 - 110 pages |
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Common terms and phrases
admitted allowed amount asbestos bearings boiler attendants Boiler Explosions boiler-house boiler-plates brickwork Cent CHAPTER clean coal cocks cold water condenser considerable construction Cornish boiler corrosion crank-shaft cylinder damper diameter draught Drawing the fires driving economy employed ENGINES AND BOILERS enters the boiler examined excessive EXPANSION GEAR Explosions arising Fahrenheit Fcap feed feed-water fire-bars fire-box fitted fixed flues fly-wheel Foolscap folio friction fuel furnace crowns furnace door fusible plugs gas-engines governor Gray's Inn Road heat HIGH-PRESSURE HORIZONTAL ENGINES illustration Fig incrustation iron joints Lancashire boilers leather lubrication machinery MANAGE A STEAM-ENGINE means necessary number of revolutions packing pass pipes piston plates PORTABLE ENGINE possible POWIS BALE pressure of steam prevent pulley pump quotient removed revolutions per minute RULE.-Multiply safety safety-valves screw secure shaft shortness of water side STEAM BOILERS steam-boilers stuffing-box surface tallow tion tubes types of Engines valve VERTICAL ENGINES water gauges
Popular passages
Page 8 - By his admirable contrivance, it has become a thing stupendous alike for its force and its flexibility, for the prodigious power which it can exert, and the ease, and precision, and ductility, with which it can be varied, distributed, and applied. The trunk of an elephant, that can pick up a pin or rend an oak, is as nothing to it.
Page 69 - Begin to lace in the centre of the belt, and take much care to keep the ends exactly in line, and to lace both sides with equal tightness. The lacing should not be crossed on the side of the belt that runs next to the pulley.
Page 69 - It is also desirable to locate the shafting and machinery so that belts shall run off from each shaft in opposite directions, as this arrangement will relieve the bearings from the friction that would result where the belts all pull one way on the shaft.
Page 88 - Blow through the test tap at the bottom of the gauge hourly, as well as through the tap in the bottom neck, and the tap in the top neck twice daily. These taps should be blown through more frequently when the water is sedimentary, and whenever the movement of the water in the glass is at all sluggish. Should either of the thoroughfares become choked, clean them out with a wire. Work the floats up and down by hand three or four times a day to see that they are quite free. Always test the glass water...
Page 8 - The trunk of an elephant that can pick up a pin or rend an oak is as nothing to it. It can engrave a seal, and crush masses of obdurate metal...
Page 70 - One part of crushed nutgalls is digested six hours with eight parts distilled water, and strained. Glue is macerated in its own weight of water for twenty-four hours, and then dissolved. The warm infusion of galls is spread upon the leather, the glue solution upon the roughened surface of the warm metal, the moist leather is pressed upon it and then dried, when it adheres so that it cannot be removed without tearing.
Page 8 - It can engrave a seal, and crush masses of obdurate metal like wax before it, — draw out, without breaking, a thread as fine as gossamer, and lift a ship of war like a bauble in the air. It can embroider muslin, and forge anchors, — cut steel into ribands, and impel loaded vessels against the fury of the winds and waves.
Page 49 - Never allow the fire to be so low, before a fresh charge is thrown in that there shall not be at least four to five inches deep of clear, incandescent fuel on the bars, and equally spread over the whole.
Page 89 - Blow-out Taps and Scum Taps. — Open the blowout tap in the morning before the engine is started, and at dinner time when the engine is at rest. Open the scum tap when the engine is running, before breakfast, before dinner, and after dinner. If the water be sedimentary, run down half an inch of water at each blowing. If not sedimentary, merely turn the taps round. See that the water is at the height indicated by the water-level pointer at the time of opening the scum tap. Do not neglect blowing...
Page 81 - ... tension are excessive. This should be borne in mind when calculating the diameter of the shafting, and the centres to which the bearings are to be fixed. A useful rule for finding the diameter of a wrought-iron shaft, capable of transmitting a given horsepower, may be stated as follows : — Multiply the given horse-power by 125, and divide the product by the number of revolutions per minute, the cube root of the quotient will be the diameter in inches. For saw-mill shafting an increase in diameter...