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A precision two crystal x-ray spectrometer of wide applicability with worm wheel drive; An improved precise method of equalizing the spacing of worm wheel teeth

DuMond, Jesse W. M. and Marlow, Douglas (1937) A precision two crystal x-ray spectrometer of wide applicability with worm wheel drive; An improved precise method of equalizing the spacing of worm wheel teeth. Review of Scientific Instruments, 8 (4). pp. 112-121. ISSN 0034-6748. http://resolver.caltech.edu/CaltechAUTHORS:20140623-153755590

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Abstract

This article describes the design and construction of a two crystal x‐ray spectrometer for the study of radiation of wave‐length from (but not including) the vacuum region to about 100 X.U. Versatility coupled with precision of angular measurement is obtained by the use of worm gears, the spacing of whose teeth has been corrected by a relatively cheap but effective lapping method herein described.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.1752253 DOIArticle
http://scitation.aip.org/content/aip/journal/rsi/8/4/10.1063/1.1752253PublisherArticle
Additional Information:© 1937 American Institute of Physics. Received December 12, 1936. We are indebted to Dr. G. H. Worrall of the Mitchell Camera Corporation of Hollywood for his kind cooperation in hobbing these worm wheels on a precision Barber Coleman hobbing machine. We thank Dr. John Anderson and Dr. W. V. Houston for lending us the necessary optical parts for testing the worm wheels. The staff entrusted with the construction of the 200-inch telescope has on the strength of our present results decided to adopt the method here described to originate precision in the large telescope driving worm wheels and we thank them for their very stimulating and helpful interest. The funds for the construction of this spectrometer were derived from the gift of Leon L. Watters of New York City known as the Watters' Memorial Research Fund, given as a memorial to Dr. Watters' wife, Frances Hayes Watters. We are grateful for this opportunity to express our appreciation of his gift.
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Leon L. WattersUNSPECIFIED
Record Number:CaltechAUTHORS:20140623-153755590
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140623-153755590
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46453
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 Jun 2014 15:40
Last Modified:24 Jun 2014 15:40

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