| 摘要 |
A tool bar unit comprising three parallel tool bars and a series of triangular spacers positioning the bars at approximately equal distances in a triangular pattern whereby two of the tool bars are in the same horizontal plane and act as the mounting tool bars, while the third tool bar is located centrally between the first two tool bars and in a horizontal plane vertically thereabove so as to cooperate with the triangular spacers and define stiffening means. The spacers each consists of a pair of solid plates sandwiching edge reinforcing rods therebetween, the opposed ends of the rods being threaded and orientated so as to define tool bar receiving and clamp mounting members.
|
