Abstract: A safety device for roll forming apparatus that has a pair of oppositely rotating pressure rollers with parallel axes and peripheral cylindrical surfaces which define between them a gripping and contact gap. The safety device comprises a pair of safety rollers located rearwardly of the pressure rollers and having peripheral portions spaced apart a distance greater than the gap between the pressure rollers and means for rotating the safety rollers in a rearward direction with respect to the pressure rollers in order to engage and reject foreign articles placed between the safety rollers.