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Journal of the Society of Motion Picture and Television Engineers ( Volume: 54, Issue: 1, January 1950)
[ACTIVE]

New Projection Lamp and Carbon-Feed Mechanism

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
This paper describes a new carbon-arc projection lamp employing an electronic system to provide automatic control of the carbon positions. Each carbon-feed mechanism is separately driven by an alternating-current motor actuated by an electronic impulse generator. Feeding speed of the carbons is controlled by varying the resistances through the generator control circuits to adjust the number of impulses supplied per minute to the alternating-current motors according to the carbon-consumption rates. A polarized directional electromagnet controls the position and shape of the tail flame.
Publication Date
1950-01-01
DOI
10.5594/J06381
Link
https://doi.org/10.5594/J06381
Author(s)
J. K. Elderkin
Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J06381.json

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J. K. Elderkin; New Projection Lamp and Carbon-Feed Mechanism, Journal of the Society of Motion Picture and Television Engineers ( Volume: 54, Issue: 1, January 1950); SMPTE, 1950. Available at https://doi.org/10.5594/J06381
Snippet:
J. K. Elderkin; New Projection Lamp and Carbon-Feed Mechanism, Journal of the Society of Motion Picture and Television Engineers ( Volume: 54, Issue: 1, January 1950); SMPTE, 1950. Available at https://doi.org/10.5594/J06381

HTML (ISO 690 compliant)

Preview:
J. K. Elderkin; New Projection Lamp and Carbon-Feed Mechanism, Journal of the Society of Motion Picture and Television Engineers ( Volume: 54, Issue: 1, January 1950); SMPTE, 1950. Available at https://doi.org/10.5594/J06381
Snippet:
<span class="citation">J. K. Elderkin; <cite>New Projection Lamp and Carbon-Feed Mechanism</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 54, Issue: 1, January 1950); SMPTE, 1950. Available at <a href="https://doi.org/10.5594/J06381" target="_blank" rel="noopener">https://doi.org/10.5594/J06381</a></span>

SMPTE Icon SMPTE's HTML Pub

Preview:
J. K. Elderkin; New Projection Lamp and Carbon-Feed Mechanism, Journal of the Society of Motion Picture and Television Engineers ( Volume: 54, Issue: 1, January 1950); SMPTE, 1950
doi: 10.5594/J06381
url: https://doi.org/10.5594/J06381
Snippet:
<li>
J. K. Elderkin; <cite id="bib-10-5594-j06381">New Projection Lamp and Carbon-Feed Mechanism</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 54, Issue: 1, January 1950); SMPTE, 1950
<span class="doi">10.5594/J06381</span>
</li>