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Journal of the American Institute of Electrical Engineers

Issue 4 • Date April 1922

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Displaying Results 1 - 25 of 31
  • Air-break magnetic blow-outs: For contactors and circuit breakers both A-C. and D-C.

    Publication Year: 1922, Page(s):257 - 266
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6527 KB)

    Magnetic blow-outs have been used in contactors, circuit breakers and controllers for many years for rupturing both a-c. and d-c. power circuits, but their commercial use, particularly on alternating current has been largely confined to relatively low voltages. Oil circuit breakers and switches have been generally used for rupturing high-voltage a-c. power circuits, and their development has reach... View full abstract»

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  • The effect of high currents on disconnecting switches: With special reference to the mechanical stresses resulting

    Publication Year: 1922, Page(s):267 - 277
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (8182 KB)

    In the early days of the electrical industry, disconnecting switches adequately performed their functions without the use of locking devices, except perhaps in a few isolated cases, where the blades opened downward, and some mechanism was provided to hold the blade in against the action of gravity (when subjected to jars, vibration, etc.). The generating capacity of central stations at this time w... View full abstract»

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  • Illumination items: By the lighting and illumination committee

    Publication Year: 1922, Page(s):278 - 279
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1476 KB)

    Illumination helps to make highway travel easier at night. It helps to reduce traffic congestion, relieves eye-strain and assists in making repairs after dark. It increases night traffic and thereby relieves day congestion. It increases running time and thereby increases road capacity. Illumination of the road-bed at night would be a big factor in reducing traffic accidents. Data presented before ... View full abstract»

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  • Color temperature and its relation to the quality of light

    Publication Year: 1922, Page(s):279 - 280
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1493 KB)

    In a paper1 presented before the Illuminating Engineering Society in October 1921 at Rochester, the subject of color temperature and its relation to the quality of the emitted light for a number of different light sources was discussed. There it was shown that by the use of the color temperature of a light source a number is given which expresses the quality of the light of those source... View full abstract»

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  • Magnetic flux distribution in transformers

    Publication Year: 1922, Page(s):281 - 287
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2599 KB)

    It is customary when discussing magnetic leakage in the transformer to consider the primary and secondary windings as having a counter e. m. f. induced by a flux surrounding the coil and having the core for a part of its path. This leakage flux is frequently represented by closed lines. Since the main flux is also represented by closed lines in the core, apparently two fluxes are to be found in th... View full abstract»

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  • The superpower system — I

    Publication Year: 1922, Page(s):287 - 291
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1208 KB)

    The paper deals with the essential elements of the superpower plan and discusses the effect of a cheaper and more adequate power supply upon the industrial activity of the United States. The economies effected by the electric utility systems of the country in the past are brought out, while the need for greater coordination between the electric utilities through some such agency as superpower syst... View full abstract»

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  • The superpower system — II

    Publication Year: 1922, Page(s):292 - 297
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1479 KB)

    On account of diminishing fuel supply the development of our hydroelectric resources is imperative. It is probably the most fruitful field for conservation of natural resources open to the present generation. Under modern conditions there is an increasing demand for a continuous supply of energy in all channels of industry. Development of our hydroelectric resources probably requires more careful ... View full abstract»

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  • The electric hammer

    Publication Year: 1922, Page(s):297 - 305
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3480 KB)

    The power hammer has been in use for a long time and there are now on the market many types of power-operated hammers which may be roughly classed according to the nature of the power as follows: Pneumatic, steam, motor and pulley; cam or crank, and electropneumatic drives. The pneumatic drive includes all riveting hammers; the steam drive includes practically all forge hammers, some drop hammers,... View full abstract»

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  • A new system of electromagnetic forces needed

    Publication Year: 1922, Page(s):305 - 307
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (735 KB)

    In liquid conductors, such as exist in some electric furnaces, and especially when high current densities are used, the writer has noticed that there are some new electromagnetic forces which do not appear to be accounted for by present mathematical treatments of the subject; as such very mobile conductors respond more readily to these forces than solid conductors do, they make the presence of suc... View full abstract»

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  • Selling research

    Publication Year: 1922, Page(s):307 - 309
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    When your chairman asked me to talk to you tonight it was his thought that I should give some striking examples out of my own experience to show the value of research. In considering the matter, it seemed to me that it might be more appropriate to speak of a phase of the subject which is seldom mentioned, and I think not generally well understood, namely, selling research or perhaps more properly,... View full abstract»

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  • A relay recorder for remote control by radio

    Publication Year: 1922, Page(s):310 - 313
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1616 KB)

    Relays have been used for many years in wire telegraphy and other electrical work. The practical operation of relays actuated by received radio signals is a comparatively recent development, and has been made possible by the development of the electron tube amplifier. This paper describes the development and the operating principles of a type of relay recorder which is designed to operate from the... View full abstract»

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  • Electric crane controllers

    Publication Year: 1922, Page(s):313 - 319
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1683 KB)

    Other papers in the series on electrical apparatus for cranes deal with the requirements as to motors and auxiliary equipment; the latter comprising brakes, overload protective panels and limit switches. This paper on controllers reviews its subject in a general way, without going into any details of the devices employed, presenting a clear view of the fundamental considerations involved. The cont... View full abstract»

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  • Auxiliary electrical equipment for motor-operated cranes

    Publication Year: 1922, Page(s):319 - 328
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2552 KB)

    This is one of a series of papers on the selection of electrical apparatus for cranes and deals with the brakes, overload protective panels and limit switches. Other papers of the series cover the requirements as to motors and control. A magnetic friction brake is needed for every crane hoist, in addition to what may be provided in the way of dynamic braking or mechanical brakes, but its required ... View full abstract»

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  • A. I. E. E. Spring convention

    Publication Year: 1922, Page(s): 71
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (258 KB)

    As previously announced, the Spring Convention of the A. I. E. E. will be held in Chicago, April 19–21, 1922, at the Drake Hotel, which will be the Institute headquarters during the meeting. View full abstract»

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  • A. I. E. E. Annual convention

    Publication Year: 1922, Page(s):71 - 72
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    The Annual Convention of the Institute to be held at Niagara Falls, Ontario, during the week of June 26–30, is expected to be one of the best attended conventions which the Institute has ever held on account of its central location, the natural attractions of Niagara and the number of interesting applications of electricity which have been developed in this neighborhood through the use of e... View full abstract»

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  • Future section meetings

    Publication Year: 1922, Page(s):72 - 73
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    Freely Available from IEEE
  • A. I. E. E. directors meeting

    Publication Year: 1922, Page(s): 73
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    Freely Available from IEEE
  • Professional ethics

    Publication Year: 1922, Page(s): 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (321 KB)

    The A. I. E. E.'s permanent Committee on Code of Principles of Professional Conduct reported to the Board of Directors of the Institute, at a recent meeting, recommending that “to serve as a guide for the membership and for future decisions, the findings of the committee upon cases brought before it be published in the Institute Journal.” This recommendation has been approved; and in... View full abstract»

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  • American Engineering Council

    Publication Year: 1922, Page(s):75 - 76
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (581 KB)

    On February 18, 1922, President Harding signed the Lampert Patent Office Bill, H. R. 7077. This action marks the end of a long fight waged by the engineering societies through American engineering council to obtain from Congress much needed relief from conditions which were rapidly tending to place the Patent office in a state of uselessness. View full abstract»

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  • National Research Council

    Publication Year: 1922, Page(s):76 - 77
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    The sixteenth meeting of the Division of Engineering of National research council was held in New York City on February 14, 1922. In addition to the members of the Division attending, there were present, by invitation, Herman Lemp, of the General Electric Company, Prof. V. Karapetoff of Cornell University, and Col. K. G. Maxwell of the research department, Metropolitan-Vickers Company, Ltd., Londo... View full abstract»

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  • Institute of radio engineers

    Publication Year: 1922, Page(s): 77
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (306 KB)

    At a meeting of the Institute of Radio engineers to be held in the Engineering Societies Building, New York City, on April 5 at 8:15 p. m., a paper on the “Resistance and Capacity of Coils at Radio Frequencies,” by Professor John H. Morecroft of Columbia University, will be presented. The paper describes theoretically and experimentally the behavior of numerous types of inductances a... View full abstract»

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  • Personal mention

    Publication Year: 1922, Page(s):78 - 79
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (566 KB)

    W. C. Starkey has become vice-president of the Stevenson Gear Company, Indianapolis, Ind. He was previously with The Ohio Brass Company, Mansfield, O. View full abstract»

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  • Obituary

    Publication Year: 1922, Page(s): 79
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    Freely Available from IEEE
  • Engineering societies library

    Publication Year: 1922, Page(s):80 - 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    The library is a cooperative activity of the American Institute of Electrical Engineers, the American Society of Civil Engineers, the American Institute of Mining and Metallurgical Engineers and the American Society of Mechanical Engineers. It is administered for these Founder Societies by the United Engineering Society, as a public reference library of engineering and the allied sciences. It cont... View full abstract»

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  • Past section and branch meetings

    Publication Year: 1922, Page(s):81 - 85
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    Freely Available from IEEE

Aims & Scope

This Magazine ceased publication in 1923. The current retitled publication is IEEE Spectrum.

Full Aims & Scope