Sentence:  By separating an originally rectilinear bar having a constant cross-section in its longitudinal extent into bar portions located <WSD>deck-wise</WSD> above each other and which fit into each other such to supplement each other to the original shape, whereby the separating is done preferably by punching, an extremely rugged contact bar structure is arrived at in a most easy way, which is suitable for the rough environment of a textile mill, and in which the bar portions located remote from the ends of the bar have their connection points located at the end of the bar. 
Meaning of the word marked with <WSD> tags:  Along or toward a deck