Life of Richard Trevithick: With an Account of His InventionsE. & F.N. Spon, 1872 - 403 էջ |
Այլ խմբագրություններ - View all
Life of Richard Trevithick: With an Account of His Inventions, Հատոր 1 Francis Trevithick Ամբողջությամբ դիտվող - 1872 |
Life of Richard Trevithick: With an Account of His Inventions Francis Trevithick Ամբողջությամբ դիտվող - 1872 |
Life of Richard Trevithick: With an Account of His Inventions, Հատոր 1 Francis Trevithick Ամբողջությամբ դիտվող - 1872 |
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air-pump Andrew Vivian Arthur Woolf atmosphere axle beam blast-pipe boiler bottom Boulton and Watt buckets caisson Camborne Captain Dick Captain Trevithick's Carn Brea carriage cast-iron chap chimney coal Coalbrookdale condensing constructed Cook's Kitchen Cornish crank cross-head cylinder Davies Gilbert discharging Dolcoath drawing drift driftway driving wheels engine in Cornwall erected feet long fire fire-engine fixed foundry four-way cock GIDDY give high-pressure engine hole Homfray horizontal humble servant improved inches in diameter invention kibbals lever lift load locomotive locomotive engine London miles an hour mines motion passed patent Penydarran pipe piston piston-rod plugs plunger-pole pressure pressure-engine propelling puddling engine pump railway Redruth Richard Trevithick river sand screw shaft ship side steam-carriage steam-engine steam-whim stroke Thames timber tons Tresavean Trevi Trevithick's letter tube Tuckingmill tunnel vacuum engine valves vessel Watt's weight Wheal Chance Wheal Treasury wood wrought-iron Wylam
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Էջ 33 - ... it in a case of wood, or any other materials that transmit heat slowly ; secondly, by surrounding it with s.team or other heated bodies ; and, thirdly, by suffering neither water, nor any other substance colder than the steam, to enter or touch it during that time.
Էջ 33 - I call the steam vessel, must, during the whole time the engine is at work, be kept as hot as the steam that enters it ; first by enclosing it in a case of wood, or any other materials that transmit heat slowly; secondly, by surrounding it with steam or other heated bodies ; and, thirdly, by suffering neither water nor any other substance colder than the steam to enter or touch it during that time.
Էջ 33 - ... vessel moves round, it is supplied with steam from the boiler, and that which has performed its office may either be discharged by means of condensers, or into the open air.
Էջ 33 - Fourthly, I intend, in many cases, to employ the expansive force of steam to press on the pistons, or whatever may be used instead of them, in the, same manner as the pressure of the atmosphere is now employed in common fire-engines. In cases where cold water cannot be had in plenty, the engines may be wrought by this force of steam only, by discharging the steam into the open air after it has done its office.
Էջ 33 - Condensers; and, whilst the engines are working, these condensers ought at least to be kept as cold as the air in the neighbourhood of the engines, by application of water, or other cold bodies. THIRDLY, whatever air, or other elastic vapour, is not condensed by the cold of the condenser, and may impede the working of the engine, is to be drawn out of the steam vessels or condensers by means of pumps, wrought by the engines themselves, or otherwise.
Էջ 75 - Twas a stiffish hill going up to Camborne Beacon, but she went off like a little bird. When she had gone about a quarter of a mile, there was a rough piece of road, covered with loose stones.
Էջ 307 - Health and Comfort in House Building, or Ventilation with Warm Air by Self-Acting Suction Power, with Review of the mode of Calculating the Draught in Hot-Air Flues, and with some actual Experiments. By J. DRYSDALE, MD, and JW HAYWARD, MD Second edition, with Supplement, with plates, demy 8vo, cloth, 'js.
Էջ 33 - I soon relinquished the idea of constructing an engine upon this principle, from being sensible it would be liable to some of the objections against Savery's engine, viz. the danger of bursting the boiler, and the difficulty of making the joints tight, and also that a great part of the power of the steam would be lost, because no vacuum was formed to assist the descent of the piston.
Էջ 33 - My method of lessening the consumption of steam, and consequently fuel, in fire engines, consists of the following principles : — "First, That vessel in which the powers of steam are to be employed to work the engine, which is called the cylinder...
Էջ 33 - ... are placed weights, so fitted to them as entirely to fill up a part or portion of their channels, yet rendered capable of moving freely in them by the means hereinafter mentioned or specified. When the steam is admitted in these engines between these weights and the valves, it acts equally...