| 摘要 |
Hand-held tools (40) for gripping a railway contact rail to facilitate grounding thereof are provided. A first member (42) includes a first jaw (43 ) at an end thereof, a handle at an opposite end thereof, and a first intermediate portion extending between the first jaw and the handle. A secon d member (52) is pivotally attached to the first member and includes a second jaw (53) at an end thereof, a set of ratchet teeth (54) at an opposite end thereof, and a second intermeditate portion extending between the second jaw and the set of ratchet teeth. The first and second jaws are configured to pivot relative to each other so as to grip respective opposite side portions of a railway contact when the handle is moved downwardly such that the secon d intermediate portion is in electrical contact with a top portion of a railwa y contact rail. A pawl extends from the first intermediate portion and is configured to engage the set of ratchet teeth to hold the first and second jaws in contact with the respective opposite sides of a railway contact rail . A biasing member (62) is operatively associated with the pawl and is configured to urge the pawl into engagement with the set of ratchet teeth. A release lever (64) is operatively associated with the biasing member and/or the pawl and is configured to disengage the pawl from the set of ratchet tee th and allow movement of the handle so as to disengage the hand-held tool from a contact rail. |
