| 摘要 |
Multiple tool means for working a material are mounted in a tool-supporting structure. The tool-supporting structure, at one side, is formed with an elongated tool opening to provide for movement of a gang of tools therethrough into and out of engagement with a surface and the body of the material. Each of the tools in the gang may thereafter be selectively actuated. Where desired, greater versatility is realized by mounting additional reciprocating tools in spaced relation around a frame which revolves through an extended arc of travel. Indexing movement of the revolving frame permits any of the tools to be located so as to be advanced and retracted through the said opening of the tool-supporting structure in various positions of angularity along the extended arc of travel.
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