Flat bottom rail fastenings for concrete sleepers. The development of a method of securing elastic rail spikes in concrete sleepers by means of insert plugs (E-081)

Pre-stressed concrete sleepers have teen used extensively in the lower category lines on British Railways for some years, but their use has generally been in conjunction with bull-head rails and chairs. Since the introduction of flat bottom rails, the question has arisen as to suitable methods of using concrete sleepers...