Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 31, September 1927)

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Report of the Standards and Nomenclature Committee

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: At the Norfolk meeting of the Society the sprocket dimensions in accordance with the general plan of Mr. J. G. Jones had first approval as follows: — The take-up sprocket, which is a hold back sprocket on a motion picture projector, should be designed to have the same pitch as the perforations on film which has shrunk to the maximum amount occurring with films in commerically useful condition as supplied by exchanges. — The feed and intermittent sprockets are to have a pitch equal to that of the sprocket holes in newly finished film. — The Committee finds that, the maximum shrinkage of useful film is 1.5% and recommends a take-up sprocket designed accordingly. The shrinkage of newly processed film, for which the feed and intermittent are designed, is 0.13%. These latter sprockets, as has already been shown, will accommodate film shrunk as much as 2.92% without damage. Dimensions of sprockets to produce these results are illustrated in Charts A, B, and C. (pp. 407. 408 in No. 29 Transactions.)
Publication Date: 1927-09-01
DOI: 10.5594/J06588
Link: https://doi.org/10.5594/J06588

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Report of the Standards and Nomenclature Committee, Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 31, September 1927); SMPTE, 1927. Available at https://doi.org/10.5594/J06588

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Report of the Standards and Nomenclature Committee, Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 31, September 1927); SMPTE, 1927. Available at https://doi.org/10.5594/J06588

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<span class="citation"><cite>Report of the Standards and Nomenclature Committee</cite>, Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 31, September 1927); SMPTE, 1927. Available at <a href="https://doi.org/10.5594/J06588" target="_blank" rel="noopener">https://doi.org/10.5594/J06588</a></span>

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Report of the Standards and Nomenclature Committee, Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 31, September 1927); SMPTE, 1927
doi: 10.5594/J06588
url: https://doi.org/10.5594/J06588

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<cite id="bib-10-5594-j06588">Report of the Standards and Nomenclature Committee</cite>, Transactions of the Society of Motion Picture Engineers ( Volume: 11, Issue: 31, September 1927); SMPTE, 1927
<span class="doi">10.5594/J06588</span>
</li>