| 摘要 |
This invention relates to nut runners, particularly for running nuts on to bicycle wheels. Such machines conventionally comprise a running or driving head having a screw-driver blade engageable with the nut to be run and mounted in a telescopic guide sleeve caused to slide under the action of a jack over a support member, along the axis of a spoke placed opposite the blade by means of a step-wise movement of the wheel. The wheel is moved by means of a catch which is operated by a second jack in a direction substantially perpendicular to the movement of the head, which movement is synchronized with the advancing movement of the catch. In accordance with this invention, the catch is provided with means for positioning the blade with respect to a nut on a spoke during the nut running operation. |
