Freight bracing apparatus

Claim 1

FREIGHT BRACING STRUCTURE COMPRISING SPACED PARALLEL UPRIGHT SUPPORT STRUCTURES, EACH OF WHICH IS PROVIDED WITH THREE PARALLEL ROWS OF OPENINGS; THE SPACING OF THE OPENING IN EACH ROW BEING THE SAME AS THE SPACING BETWEEN ROWS; A CROSS BAR EXTENDING BETWEEN THE SUPPORT STRUCTURES; FITTINGS CARRIED AT OPPOSITE ENDS OF SAID CROSS BAR, AT LEAST ONE OF SAID FITTINGS BEING MOUNTED FOR FREE LONGITUDINAL SLIDABLE MOVEMENT ON THE CROSS BAR; TWO SPACED HOOKSHAPED SUPPORT ELEMENTS CARRIED BY EACH FITTING FOR EXTENSION THROUGH SELECTED ONES OF THE OPENINGS INTO ANTIPULL OUT ENGAGEMENT WITH THE ADJACENT SUPPORT STRUCTURE; THE SUPPORT ELEMENT SPACING BEING TWICE THE OPENING SPACING TO PERMIT ROTATIONAL AND LATERAL ADJUSTMENT OF THE CROSS BAR BY POSITIONMENT OF THE SUPPORT ELEMENTS IN SELECTED OPENINGS; AND A LOCKING MEMBER MOVABLY CARRIED BY EACH FITTING IN THE SPACE BETWEEN THE SUPPORT ELEMENTS FOR RECTILINEAR INSERTION INTO AND RETRACTION FROM THE OPENINGS TO RELEASABLY LOCK THE SUPPORT ELEMENTS ONTO THE SUPPORT STRUCTURES.