| 摘要 |
A sealing plate (2), for use with a rail clip anchoring device (1) having a head (1A) and a stem (100) which extends from the head (1A) into a concrete sleeper when the anchoring device (1) is in use, is adapted for extending over the underside of the head (1A) when the stem (100) of the device (1) is being set in a concrete sleeper, thereby to prevent ingress of concrete into the head (1A) of the device (1), and for being retained on the surface of the sleeper thereafter. A major face (20) of the plate (2), which is uppermost when the sleeper is in use, is provided with at least one clip seat portion (25) for receiving part of a rail clip (3). Method of manufacturing a concrete sleeper with at least one embedded rail clip anchoring device (1). |
