| 摘要 |
In builders scaffolding of the kind in which cross members are connected to upright members by means of a wedge clamping member extending through apertures in opposed limbs of a C section bracket which is arranged to embrace a socket member secured to the upright member, whereby the wedge clamping member extends through the socket member and urges the limbs of the bracket into pressure engagement with the upright member, the upper limb of the bracket is formed with a depression adapted to enter the open upper end of the socket, whereby the bracket can be made more easily and cheaply than in the previous arrangement in which the upper limb was provided with external dependent lips to engage the outside of the socket member. |
