| 摘要 |
1504416 Selective printing SIEMENS AG 12 June 1975 [14 Aug 1974] 25145/75 Heading B6F A print needle 1 is held in a blind bore 2 in a plunger armature 3 by elastic deformation either of the end of the needle itself or of a separate means provided in the bore. As shown, the needle 1 is distorted at its end and grips the side of the bore 2 when pressed therein. In modifications, a helical spring may surround the end of the needle, the tip of which is bent to prevent it from escaping, or a spring collar may surround the end of the needle. |
