Building anchor-rail production method - presses tube in transverse direction to form bolt shank before insertion in hole in rail and expanding at end

摘要

A tube (10) cut to length is pressed in the transverse direction to form the shank, and after the foot of the latter has been inserted in a hole in the rail (6) one or more stops (2') are formed on it to secure it in position. The free end (11) of the shank is expanded in relation to it, to form a fixing portion. Pressure can be exerted in the transverse direction after insertion in the rail hole. Its end protrudes beyond the hole and can be beaded over into a collar. ADVANTAGE - It is simple to manufacture, and avoids need for solid anchor bolts.