… or tramway track construction material of iron or steel, the following : rails, check-rails and rack rails, switch blades, crossing frogs, point rods and other crossing pieces, sleepers (cross-ties), fish-plates, …
Explanatory notes
… or tramway track construction material of iron or steel, the following : rails, check‑rails and rack rails, switch … used to support the rails and keep them parallel. They are usually pressed into final shape after rolling, but … bull‑head rails to the sleepers; they are secured by coach screws or bolts. Chair wedges are used to hold the …