Chopped cotton waste reinforced phenolic insert plug for mounting rails on concrete ties; main element of plug is inserted in tie during manufacture; rail is fastened by T-head screw sunk in insert and is held in position by additional reinforced phenolic molding shaped to take rail clamp.
Phenolic plugs for concrete rail sleepers
Brit Plastics
British Plastics ; 34 , n 5
1961
Article (Journal)
English
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A. D. rail fastening for concrete sleepers
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