Railway sleeper with spade-like end contours
AssigneeBritish Steel Corporation
InventorWilliam H. Hodgson
Life of this patent
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Abstract
According to the invention there is provided a railway sleeper having a formed inverted channel-shaped section the ends of which have their upper surfaces downwardly inclined and shaped in a corrugated fashion to add strength and rigidity to said ends. The `dished spade` end contour of the sleeper may be pressed from a standard rolled steel channel section. By virtue of the stronger ends thus produced these portions can sustain a greater load than the conventional design hitherto--this means that the length of the sleeper according to this invention may be much shorter, e.g. 20% less than the conventional design for the same load bearing capacity, representing a considerable cost savings. The shape facilitates stacking, and lateral insertion beneath the track for track maintenance and replacement etc.
Claims9
A railway sleeper having an inverted rolled steel channel-shaped section the ends of which have their upper surfaces downwardly inclined and inwardly tapered over their central region towards the sleeper extremities whereby to define at said extremities a corrugated contour to add strength and rigidity to the sleeper, said ends being press formed, the sleeper being of consistent width and continuous form along its entire length.
A railway sleeper having a formed inverted rolled steel channel-shaped section the ends of which have their upper surfaces downwardly inclined and inwardly tapered over their central region towards the sleeper extremities so as to progressively define at said extremities, in end elevation, a serpentine path having downwardly inclined portions at the side and two further such portions inwardly thereof, said ends being press formed, the sleeper being of consistent width and continuous form along its entire length.
A roll formed steel railway sleeper having an inverted channel-shaped section and press formed ends having their upper surfaces downwardly inclined and inwardly tapered over their central region towards the sleeper extremities so as to progressively define at said extremities, in end elevation, a serpentine path having downwardly inclined portions at the side and two further such portions inwardly thereof defining a U-shaped central depression, and each sleeper being of consistent width and continuous form along its entire length.
Dependencies are inferred from the claim text.