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The early inventors and their patents

  • Eric R. Laithwaite
Chapter

Abstract

Linear motion is common in Nature and in the motions of early steam, gas and other internal combustion engines. In the mechanical devices the ‘natural’ linear motion is converted to rotation by other mechanical means. The history of linear electrical machines is concerned with the influence of such reciprocating machines only to the same extent as that to which rotary electric motors left their mark, as discussed in chanter 1.

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References

  1. Adkins, B. (1957), The General Theory of Electrical Machines (Chapman and Hall)Google Scholar
  2. Birkeland, K. (1901), Norwegian Patent No. 11201Google Scholar
  3. Birkeland, K. (1901), Norwegian Patent No. 11342Google Scholar
  4. Birkeland, K. (1902), Norwegian Patent No. 11228Google Scholar
  5. Birkeland, K. (1903), Norwegian Patent No. 13035Google Scholar
  6. Birkeland, K. (1903), Norwegian Patent No. 13052Google Scholar
  7. Blake, L. R. (1957), ‘Conduction and induction pumps for liquid metals’, Proc. IEE, Vol. 104A, No. 13, pp. 49–63Google Scholar
  8. Fleming, J. A. (1891), ‘Electro-magnetic repulsion’, The Electrician, Vol. 26, No. 669, pp. 567–571 and 601–604Google Scholar
  9. Gamow, R. J. and Harris, J. F. (1972), ‘What engineers can learn from nature’, IEEE Spectrum, Vol. 9, pp. 36–42CrossRefGoogle Scholar
  10. Hesmondhalgh, D. E., Tipping, D. and Sarson, A. (1973), ‘High-torque low-speed motor using magnetic attraction to produce rotation’, Proc. IEE, Vol. 120, No. 1, pp. 61–66Google Scholar
  11. Japolsky, N. (1931), ‘Moving magnetic fields in electrical engineering and physics’, Scientific Journal of the Royal College of Science, Vol. I, pp. 105–126Google Scholar
  12. Jones, M. F. (1946), ‘Launching aircraft electrically’, Aviation, Vol. 45, No. 10, pp.62–65Google Scholar
  13. Junior Mechanics and Electricity (1914), ‘An experimental model electric railway’;, 1st June, pp. 246–247Google Scholar
  14. Kron, G. (1942), ‘The application of tensors to the analysis of rotating electrical machinery’, General Electric ReviewGoogle Scholar
  15. Laithwaite, E. R. (1965), ‘The goodness of a machine’, Proc. IEE, Vol. 112, No. 3, pp.538–541Google Scholar
  16. Laithwaite, E. R. (1973), ‘Man made or God made?’, Electronics and Power, Vol. 19, pp.17–19Google Scholar
  17. Laithwaite, E. R. and Hardy, M. T. (1970), ‘Rack-and-pinion motors: hybrid of linear and rotary machines’, Proc, IEE, Vol. 117, No. 6, pp. 1105–1112Google Scholar
  18. McCarthy, J. (1922), U.S. Patent No. 1417189Google Scholar
  19. Park, R. H. (1929), ‘Two-reaction theory of synchronous machines—I’, Trans. AIEE, Vol. 48, pp. 716–730Google Scholar
  20. Park, R. H. (1933), ‘Two-reaction theory of synchronous machines—II’, Trans. AIEE, Vol. 52, pp. 352–354Google Scholar
  21. Shaw, J. M., Sketch, H. J. H. and Logie, J. M. (1954), ‘The theory, design, construction and testing of an electric launcher’, RAE Report AERO. 2523, E.L. 1484Google Scholar
  22. The Engineer (1912), ‘Foucault and eddy currents put to service’, 18 October, pp.420–421Google Scholar
  23. The Motor (1914), ‘A high-speed electric repulsion railway’, 12th May, p. 686Google Scholar
  24. Tomlinson, C. (editor) (1852–54), Cyclopaedia of Useful Arts, Mechanical and Chemical Manufactures, Mining and Engineering, Vol. I, p. 577 (George Virtue and Co., London)Google Scholar
  25. Trombetta, P. (1922), ‘The electric hammer’, Trans. AIEE, Vol. XLI, pp. 233–241 (presented at the Spring Convention of AIEE, Chicago, 19–21 April 1922)Google Scholar
  26. Westinghouse Engineer (1946), ‘A wound rotor motor 1400 ft. long’, Vol. 6, pp. 160–162Google Scholar
  27. Zehden, A. (1905), U.S. Patent No. 732312Google Scholar

Copyright information

© Eric R. Laithwaite 1987

Authors and Affiliations

  • Eric R. Laithwaite
    • 1
  1. 1.Imperial CollegeLondonUK

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