| 摘要 |
514,661. Joint - making packing. K. L. G. SPARKING PLUGS, Ltd., and CARINGTON, C. M. May 12, 1938, No. 14235. [Class 122 (iii)] [Also in Group XXVII] A joint between metal and ceramic parts consists of two or more layers of soft metal. foil 19 less than 0 À002 inch in thickness. Aluminium foil of about 0À0003 inch in thickness wrapped around material known under the Registered Trade Mark "Corundite" is preferred. Stacks of washers 20 similarly constituted may be placed between the insulator and the head or nut on the insulated conductor 11.
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