| 摘要 |
A jig for joining and forming plastics sections 23, 24 for use in model making comprises a pair of end rollers 10, 11 mounted on a shaft 12 and between which can be secured discs or plates 20, 21 of different dimensions whereby the discs or plates 20, 21 together with the end rollers 10, 11 define a peripheral groove 22 in the configuration of the section to be formed. The discs or plates 20, 21 are washers (e.g. of aluminium) adapted to be removably slid onto the shaft or spindle, the washers being circular and of varying diameters, whereby the end rollers 10, 11 and washers 20, 21 can be assembled to define a circumferential groove 22 of the required sectional configuration. The roller 10 may be integral with shaft 12 and roller 11 is secured thereto either by a screw 14 engaging an axial slot 13 in the shaft or by a screw acting on the shaft 12 via an elastomeric (rubber) or plastics plug. <IMAGE> |
