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Journal of the Society of Motion Picture Engineers ( Volume: 31, Issue: 4, October 1938)
[ACTIVE]

An Improved Roller Type Developing Rack with Stationary Drive

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
In a previous paper a rack was described that provided for continuous motion of a 200-ft. length of motion picture film during processing but could be used with the rack-and-tank equipment. The purpose of this roller rack was to give a type of treatment in processing essentially similar to that given by a continuous machine while retaining the features of batch equipment that are helpful in experimental processing. The rack previously described included a built-in driving motor and reduction gear, an arrangement that was most feasible for a single unit. With more extensive use it became desirable to have multiple units operated from stationary drives at the tanks and at the loading and unloading stations. A new design has been worked out in which the weight of the rack was reduced greatly by the use of stationary drives. Further reduction in weight was attained by the substitution of tensioning springs for the weighted supporting beam associated with the movable lower shaft in the earlier model. This shaft was mounted upon the frame by lever arms in such a way as to use the torsional rigidity of the shaft itself to maintain it parallel to the upper shaft while allowing it the necessary vertical movement.
Publication Date
1938-10-01
DOI
10.5594/J08470
Link
https://doi.org/10.5594/J08470
Author(s)
C. E. Ives
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C. E. Ives; An Improved Roller Type Developing Rack with Stationary Drive, Journal of the Society of Motion Picture Engineers ( Volume: 31, Issue: 4, October 1938); SMPTE, 1938. Available at https://doi.org/10.5594/J08470
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C. E. Ives; An Improved Roller Type Developing Rack with Stationary Drive, Journal of the Society of Motion Picture Engineers ( Volume: 31, Issue: 4, October 1938); SMPTE, 1938. Available at https://doi.org/10.5594/J08470

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C. E. Ives; An Improved Roller Type Developing Rack with Stationary Drive, Journal of the Society of Motion Picture Engineers ( Volume: 31, Issue: 4, October 1938); SMPTE, 1938. Available at https://doi.org/10.5594/J08470
Snippet:
<span class="citation">C. E. Ives; <cite>An Improved Roller Type Developing Rack with Stationary Drive</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 31, Issue: 4, October 1938); SMPTE, 1938. Available at <a href="https://doi.org/10.5594/J08470" target="_blank" rel="noopener">https://doi.org/10.5594/J08470</a></span>

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Preview:
C. E. Ives; An Improved Roller Type Developing Rack with Stationary Drive, Journal of the Society of Motion Picture Engineers ( Volume: 31, Issue: 4, October 1938); SMPTE, 1938
doi: 10.5594/J08470
url: https://doi.org/10.5594/J08470
Snippet:
<li>
C. E. Ives; <cite id="bib-10-5594-j08470">An Improved Roller Type Developing Rack with Stationary Drive</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 31, Issue: 4, October 1938); SMPTE, 1938
<span class="doi">10.5594/J08470</span>
</li>