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.