Timber shuttering panel connections are completed by adjusting stress wedges in crossbar holes to flush-converge crossbars and coupling despite timber warp or thinning.

摘要

The crossbars (17,18) are moved crossways relative the center coupling (19) by a cross-stressing wedge on one of the crossbars so as to move bars and coupling at right angles to the shutter surface defined by the shuttering elements (11,12). The holes (29) in the crossbars (17,18) and/or coupling (19) are larger transverse or normal to the shuttering surface than stress wedges (20-23) at the particular hole (29) location. The cross-stressing wedge comes in hook form to engage the coupling (19) and otherwise bear on the outside of the crossbars (17,18) running parallel to the shuttering surface. The relative movement of bars and coupling is effected by changing the length of the hook shaft by key, cam or screw.