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 |
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advantage application armature arranged battery cable called carried cells cent centre charged circuit claimed coal coils conducting conductor connected consists construction copper cost curves Daft desired direction distance driving wheels dynamo efficiency electric current electric motor electric railway electro-magnet electro-motive force elevated energy engine estimated experiments feet Field fifty five forty four gearing give grades greater half horse-power horses hundred idea important inches increased insulated invention inventor less light load locomotive loss machine magnet means mechanical Michigan miles an hour minute motion move necessary opened operated ordinary pass passengers patent placed possible pounds practical present question rails resistance revolving road shaft side speed starting station steam stopping storage street thirty thousand tion tons track train transmission transmitted travelling truck waste weight wheels wire
Popular passages
Page 47 - 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 26 - 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 47 - 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 12 - 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 34 - 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 15 - ... 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 26 - ... 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 15 - 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 56 - 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 5 - 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...
Bibliographic information
| Title | Electric Railways and the Electric Transmission of Power Described in Plain Terms |
| Author | Robert Luce |
| Publisher | W. I. Harris & Company, 1886 |
| Original from | the University of Michigan |
| Digitized | 12 Jul 2005 |
| Length | 106 pages |
| Export Citation | BiBTeX EndNote RefMan |