Manufacture of electric switches |
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| 申请号 | US3628242D | 申请日 | 1969-03-27 | 公开(公告)号 | US3628242A | 公开(公告)日 | 1971-12-21 |
| 申请人 | BADALEX LTD; | 发明人 | ZOLLMAN PETER M; | ||||
| 摘要 | The invention concerns a method for assembling reed contact units. In assembling such units, one reed is positively held and the second is magnetically held from the first and is aligned with it while so held. A fusible element is sealed to both reeds, the sealing being completed, and the reeds held positively, after the reeds have been displaced relatively through a distance corresponding to the desired gap between the reeds in the finished contact unit. | ||||||
| 权利要求 | 1. A method of making a magnetic reed contact unit of the type comprising a fusible enclosure and at least two generally similar magnetic contact members mounted in said enclosure and having end surfaces which engage when the two contact members are magnetically held which includes supporting a first contact member from a support, moving a second contact member into a position wherein one end surface thereof overlaps an end surface of said first contact member, supporting the second contact member magnetically from the first contact member at the overlap, engaging the edges of said contact members and moving said contact members into alignment at the overlap against the friction caused by magnetic attraction, passing an open-ended enclosure member over the aligned and overlapped contact members while said second contact member is magnetically supported from said first contact member, sealing the second contact member to said enclosure member while said second contact member is still magnetically supported from the first contact member, releasing the magnetic support of the second contact member from the first contact member leaving the second contact member supported by the enclosure member, moving said enclosure member and support means relatively to produce a desired separation of the two contact members, and sealing the first contact member to said enclosure member to hold said contact members with the desired separation. 2. A method in accordance with claim 1 wherein said support means and enclosure are moved relatively while the enclosUre is in a partially fused and plastic condition. 3. A method in accordance with claim 1 wherein said adjustment of the flat contact surfaces of the contact members is a lateral adjustment to bring said flat surfaces substantially into alignment whereby the central longitudinal axes of said contact members are substantially parallel. 4. A method in accordance with claim 3 wherein said second contact member is supported from a second support means and which includes moving said second support means to bring the end portion of said second contact member into overlapping relationship but spaced from the end portion of said first contact member. Said second contact member being positioned above said first contact member, magnetically moving said second contact member into engagement with said first contact member, and releasing said second contact member from said second support means while subsequently magnetically supporting said second contact member from said first contact member. 5. A method in accordance with claim 4, wherein said magnetic support of the second contact member from said first contact member is accomplished by establishing a magnetic field from an external source in the vicinity of said overlapping end portions, said magnetic field being of sufficient strength to draw said end portions together and permit said second contact member to be supported solely by said first contact member. |
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