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Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 5, May 1931)
[ACTIVE]

A Novel Projector

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
The principal features of the projectors described are primarily intended to avoid wear and injury to the film which occurs in non-continuous projectors. The wear is principally due to the tension applied to the perforation edges as the film is either forced down upon the sprocket teeth or pulled away from them. In one type of projector, the action of the feed and take-up sprockets is supplemented by that of driven friction rollers, which are designed to limit the pull on the perforation edges to a negligible fraction of its normal value. A more recent type of projector utilizes no sprockets at all, friction rollers with automatically regulated slippage taking their place. Loops in the film automatically regulate its pressure against the friction rollers, the size of these loops, and consequently the pressure, regulating the slippage.
Publication Date
1931-05-01
DOI
10.5594/J08061
Link
https://doi.org/10.5594/J08061
Source Data (JSON)

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A Novel Projector, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 5, May 1931); SMPTE, 1931. Available at https://doi.org/10.5594/J08061
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A Novel Projector, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 5, May 1931); SMPTE, 1931. Available at https://doi.org/10.5594/J08061

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A Novel Projector, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 5, May 1931); SMPTE, 1931. Available at https://doi.org/10.5594/J08061
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<span class="citation"><cite>A Novel Projector</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 5, May 1931); SMPTE, 1931. Available at <a href="https://doi.org/10.5594/J08061" target="_blank" rel="noopener">https://doi.org/10.5594/J08061</a></span>

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Preview:
A Novel Projector, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 5, May 1931); SMPTE, 1931
doi: 10.5594/J08061
url: https://doi.org/10.5594/J08061
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<li>
<cite id="bib-10-5594-j08061">A Novel Projector</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 16, Issue: 5, May 1931); SMPTE, 1931
<span class="doi">10.5594/J08061</span>
</li>