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The spring-and-lever balancing mechanism, George Carwardine and the anglepoise lamp.

French, M. J. and Widden, M. B. (2000) The spring-and-lever balancing mechanism, George Carwardine and the anglepoise lamp. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 214 (3). pp. 501-508. ISSN 2041-2983

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    Abstract

    Two short and direct methods of exact analysis of the spring-and-lever balancing mechanism are presented. It is shown that perfect balance can be achieved by the use of a close-coiled spring whose free length is effectively zero and whose stiffness is chosen appropriately. The two-degree-of-freedom balancing mechanism, commonly seen in desk lamps but useful in many other situations, is then analysed. The treatment is extended to allow for the weight of the components of the mechanism itself. The originator of these devices was George Carwardine, whose patents over the period 1931-35 show the evolution of his ideas on this subject. A short biographical note is included as an appendix.

    Item Type: Article
    Journal or Publication Title: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
    Additional Information: ©2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE." "This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
    Uncontrolled Keywords: balancing mechanism ; equilibrator ; constant force ; Carwardine
    Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    Departments: Faculty of Science and Technology > Engineering
    ID Code: 20295
    Deposited By: ep_ss_importer
    Deposited On: 23 Dec 2008 11:47
    Refereed?: No
    Published?: Published
    Last Modified: 24 Jan 2014 05:15
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/20295

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