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INTEGRATION COMMITTEE REPORT, MINIATURE GLASS ENCLOSED CRYSTAL UNITS, TYPE CR-(XM-29)/U
KNIGHTS (JAMES) CO SANDWICH ILL
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Effort was continued to devise production methods and tools for the production of 500 type-CR-XM- 29U crystal units per eight hour shift. Units were housed in miniature glass enclosure, type HC-26U. Three types of crystal mounts were investigated. The most favored was the modified version of the tab clip. This version may be used without a dimple hole through which cement can be applied. Several epoxy cements were tested. Cements considered favorable were, bakelite-silver, sodium silicate, silpaint, and pyroceram. Pyroceram was the most favorable. A sealing machine was fabricated for use with the HC-26 glass enclosure. Frequency shift was noted during sealup. When epoxy cements were used shifts from 1-5 ppm plusminus the original frequency were indicated. With pyroceram cement shifts from 10-20 ppm positive were indicated. Two methods were tested for sealing with the sealing machine without use of gas flame. These methods were abandoned as control of gas flame developed.
APPROVED FOR PUBLIC RELEASE