Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 6, June 1947)

[ACTIVE]

Proposals for 16-mm and 8-mm Sprocket Standards

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 48, No. 6, pp. 483–520
Abstract: On Nov. 8, 1945, the chairman of the SMPE Standards Committee appointed a Subcommittee on 8-Mm and 16-Mm Projector Sprockets with the task of revising the present American Standards for sprockets. The personnel of the subcommittee is Otto Sandvik, chairman; Herbert Barnett, John A. Maurer, Lawrence T. Sachtleben, and Malcolm G. Townsley. This paper, however, is not a report by the members of the subcommittee, but is material prepared for their consideration. — The ASA Sectional Committee on Motion Pictures, Z22, had earlier referred the sprocket standards to the Standards Committee for reconsideration, suggesting that the specifications should be in equation form. In this paper, the authors have followed this procedure and are submitting proposals for a new standard, as shown in Fig. 1. Formulas are given for the root diameter of the sprocket and for the thickness and shape of the tooth. In these formulas due allowances are made for variables such as the pitch of the film, the path of the film, and the number of teeth on the sprocket. Careful consideration is given to lateral dimensions. — Members of the Society and others interested in sprocket design are urged to read this paper and Dr. C. F. Vilbrandt's paper, beginning on page 521 of this issue, and to submit their comments to Boyce Nemec, SMPE Engineering Secretary.
Publication Date: 1947-06-01
DOI: 10.5594/J17832
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J17832
Author(s): J. S. Chandler
D. F. Lyman
L. R. Martin
Details: need to add references
Copyright: © 1947 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Some Theoretical Considerations in the Design of Sprockets for Continuous Film Movement [Active]
The Projection Life of 16-mm Film [Active]
1 Jones J. G. : “Film Sprocket Design” , Trans. Soc. Mot. Pict. Eng. , 17 (Oct. 1923 ), p. 55 . EXTERNAL
3 Hill W. G. Schaefer C. L. : “A Method for Designing Film Sprockets” J. Soc. Mot. Pict. Eng. , XXXVII , 2 (Aug. 1941 ), p. 177 . EXTERNAL
4 Chandler J. S. : “Some Theoretical Considerations in the Design of Sprockets for Continuous Film Movement” , J. Soc. Mot. Pict. Eng. , XXXVII , 2 (Aug. 1941 ), p. 164 . EXTERNAL
5 Maurer J. A. Bach W. : “The Shrinkage of Acetate-Base Motion Picture Films” , J. Soc. Mot. Pict. Eng. , XXXI 1 (July 1938 ), p. 15 . EXTERNAL

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J. S. Chandler, D. F. Lyman, and L. R. Martin; Proposals for 16-mm and 8-mm Sprocket Standards, Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 6, June 1947); SMPTE, 1947. Available at https://doi.org/10.5594/J17832

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J. S. Chandler, D. F. Lyman, and L. R. Martin; Proposals for 16-mm and 8-mm Sprocket Standards, Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 6, June 1947); SMPTE, 1947. Available at https://doi.org/10.5594/J17832

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<span class="citation">J. S. Chandler, D. F. Lyman, and L. R. Martin; <cite>Proposals for 16-mm and 8-mm Sprocket Standards</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 6, June 1947); SMPTE, 1947. Available at <a href="https://doi.org/10.5594/J17832" target="_blank" rel="noopener">https://doi.org/10.5594/J17832</a></span>

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J. S. Chandler, D. F. Lyman, and L. R. Martin; <cite id="bib-10-5594-j17832">Proposals for 16-mm and 8-mm Sprocket Standards</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 6, June 1947); SMPTE, 1947
<span class="doi">10.5594/J17832</span>
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Referenced By

A Tutorial Paper: Motion-Picture Film — Its Size and Dimensional Characteristics [Active]
Standards and Recommended Practices [Active]
Report of SMPE Standards Committee [Active]
Format Factors Affecting 8mm Sound-Print Quality [Active]
35-Mm-to-16-Mm Sound Reduction Printer [Active]
SMPTE Standard for Television—Digital Representation and Bit-Parallel Interface—1125/60 High-Definition Production System [Active]
SMPTE Recommended Practice: 8-mm Type R (Regular 8) Sprocket Design [Active]
The Projection Life of 16-mm Film [Active]
SMPTE RP 55:1997 [Active, Stabilized]
SMPTE RP 73:1992 [Active, Stabilized]
SMPTE RP 74:1992 [Active, Stabilized]