Abstract: A rail grinder vehicle includes a series of connections between grinders and a chassis frame such that pairs of the grinders may be operated in an independent mode allowing separate movement and in wave control mode wherein the pair of grinders are coupled together for movement in unison. The grinders are supported from a K frame which is pivotably mounted at the center of the vehicle for stability. Each grinder is mounted upon a grinder support element and associated structure such that the grind stone of the grinder may be positioned relative to the rail and will automatically and simultaneously orient the grinding face of the grind stone at a proper angle relative to the rail corresponding to the desired position. A control system including a hydraulic system which is controlled by an electrical system is used to operate the grinders and maintain the individual grind motors at a constant power during grinding in an independent mode.

Abstract: An automatic mechanical brake adjuster for a walk-behind lift truck includes a lever (59) with two relatively pivoted parts (58,76) including a ratchet mechanism (96) therebetween. The ratchet mechanism (96) includes a ratchet wheel segment (77) and cooperating pawls (101-104). The brake adjuster also includes an extensible link (126) which determines the brake shoe back-off distance and cooperates with the ratchet mechanism (96) in effecting pivotal adjustment between the lever parts (58,76).