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    • 10. 发明专利
    • Fixing a rail alignment clamp to a railway sleeper
    • GB2403443A
    • 2005-01-05
    • GB0315437
    • 2003-07-02
    • MOORE GEORGEMOORE IAN
    • MOORE GEORGEMOORE IAN
    • B23K37/04
    • A rail alignment clamp assembly comprises (i) an alignment clamp 5 for holding, and adjusting the orientation of, an end of a rail to be welded, (ii) a separate attachment device 12,13, and (iii) a bracket 6 fixed to the clamp 5 and comprising a fixture 7,8,9 for enabling temporary attachment, using the separate attachment device 12,13, of the bracket 6, and thereby the clamp 5, to a railway sleeper. If the railway sleeper is made of concrete (figure 2), it includes a fitment (not shown), and the attachment device comprises a hooked bar 12 which is attached to the fitment at one end and is retained in a slot 8 within the fixture on the bracket 6 at its other end. Preferably, the hooked bar 12 is retained in the slot 8 by tightening a nut 11 which engages a collar 10 having a wedging surface which engages a further wedging surface on the slot 8. Alternatively, if the railway sleeper is made of wood, the attachment device comprises a further clamp 13 having a pair of chisel ends 15,16 and a connecting lug 17 located on the further clamp between the pair of chisel ends, the connecting lug being retained in a slot 7 within the fixture on the bracket 6 (see figure 4). The further clamp 13 preferably includes a nut 14 that is tightened so that the pair of chisel ends 15,16 are moved towards each other so that they dig into opposite sides of the sleeper.