Electric Railways and the Electric Transmission of Power Described in Plain Terms |
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Electric Railways and the Electric Transmission of Power Described in Plain ... Robert Luce No preview available - 2017 |
Electric Railways and the Electric Transmission of Power Described in Plain ... Robert Luce No preview available - 2017 |
Common terms and phrases
Ampère's laws ampères application armature axle Baltimore Berlin Tramway Bessbrook cable carried cells cent central station circuit coal coils conductor connected copper wire cost current waste curves Daft motors Deprez devised distance driving wheels dynamo Edison efficiency elec electric conductor electric current electric efficiency electric locomotive electric motor electric transmission electrician electro-magnet electro-motive force elevated roads energy Enos system experiments feet radius five forty four gearing grades Gramme machines half Hjörth horse-power inches increased insulated invention inventor Leo Daft less light load loss machine means miles an hour motion motive-power operation passengers patent permanent magnet placed pole Portrush pounds practical Prof rails railway system resistance revolutions a minute revolutions per minute revolve Riley system rotated shaft side Siemens speed stationary steam engine steam locomotive stop storage batteries street car Telpherage thirty tion tons track train tramway transmitted tricity truck twenty-five volts weight York elevated
Popular passages
Page 45 - The applicant shall make oath that he does verily believe himself to be the original and first inventor or discoverer of the art, machine, manufacture, composition, or improvement for which he solicits a patent...
Page 24 - already directs her finger at sources of inexhaustible power in the phenomena of electricity and magnetism, and many causes combine to justify the expectation that we are on the eve of mechanical discoveries still greater than any which have yet appeared ; and that the steam-engine itself, with the gigantic powers conferred upon it by the immortal Watt, will dwindle into insignificance in comparison with the hidden powers of nature still to be revealed, and that the day will come when that machine,...
Page 45 - Whenever it appears that a patentee, at the time of making his application for the patent, believed himself to be the original and first inventor or discoverer of the thing patented, the same shall not be held to be void on account of the invention or discovery, or any part thereof, having been known or used in a foreign country, before his invention or discovery thereof, if it had not been patented or described in a printed publication.
Page 10 - This great length gave me the idea that by the employment of two Gramme machines, it would be possible to transmit mechanical energy to great distances. I spoke of this idea to various people, and I published it in the Revue Industrielle, in 1873, and subsequently in my book on the Vienna Exhibition. The publicity thus given to it was so great that I had neither time nor desire to protect my invention by a patent. I must also mention that M. Gramme has told me that he had already worked one dynamo...
Page 33 - Rush with Bush Mills, in the North of Ireland, in the installation of which I have been aided by Mr. Traill, as engineer of the Company, and by Mr. Alexander Siemens, and Dr. E. Hopkinson, representing my firm. In this instance the two rails, 3 feet apart, are not insulated from the ground, but being joined electrically by means of copper staples they form the return circuit, the current being conveyed to the car through a T-iron placed upon short standards, and insulated by means of insulite caps,...
Page 13 - ... Stettinius went to France to take charge of purchases for the Government, Mr. Glasgow accompanied him, and while abroad occupied himself with the methods and manufacturing of the explosives and their components. On his return he was invited to look into the subject of nitrogen fixation and to find a solution to the problem of what was to be done with these Government-owned plants. Such a solution was found and is covered in a letter to the Secretary of War under date of October 22, 1919, printed...
Page 24 - ... itself, with the gigantic powers conferred upon it by the immortal Watt, will dwindle into insignificance in comparison with the hidden powers of nature still to be revealed ; and that the day will come when that machine, which is now extending the blessings of civilization to the most remote skirts of the globe, will cease to have existence except in the page of history.
Page 13 - I pointed out that, under practically realisable conditions of intensity, a copper wire of half an inch diameter would suffice to take 26,250 horse-power from waterwheels driven by the Fall, and (losing only 20 per cent, on the way) to yield 21,000 horse-power at a distance of 300 British statute miles; the prime cost of the copper amounting to 60,000 /., or less than 3 I. per horse-power actually yielded at the distant station.
Page 54 - As resistance is directly proportional to the length, and inversely proportional to the area of the cross-section, the required resistance is R = 18.7 X ||||-X |= 10.5 ohms (approx.) Ans.
Page 3 - To continue our mathematical simile : In geometry, every proposition has its converse ; likewise, the laws of parallel and angular currents have their converse in what is known as Lenz's law, which is : — " If the relative position of two conductors A and B be changed, of which A is traversed by a current, a current is induced in B, in such a direction that, by its electrodynamic action on the current in A, it would have imparted to the conductors a motion of the contrary kind to that by which...