| 摘要 |
A replaceable wear part (13) for mounting on a leading edge (12) of a working tool (10), said leading edge and said wear part having co-operative guide formations (18) extending generally perpendicular to the leading edge (12) and which provide a socket and projection type of slidable inter-fit whereby the wear part (13) can be driven by a force extending generally perpendicular to the leading edge (12) in order to take up a working position in which it is secured against displacement from the working position by frictional inter-engagement between the guide formations (18) on the wear part (13) and the leading edge (12), and without need for threaded or other separate removable fasteners.
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