| 摘要 |
<p>The mounting comprises a base plate having a central conical stud surrounding a central shaft, which carries on its other end a conical element movable along the shaft on a screw thread. A pair of arcuate section presser elements are arranged around the shaft and supported by surrounding elastic rings, and the bobbin is located over these presser-elements which are forced outwardly to engage the bobbin bore by movement of the conical element along the shaft. Pref. the bobbin is split axially, and the slit edges have cooperating latch elements to present them being separated by the force of the presser elements.</p> |
