Traction devices for towed vehicles

摘要

A traction device for caravans or trailers which is manually operated and includes a ratchet interconnection between the ground engageable wheel or wheels and a lever arm that is used to provide both a drive and a steering of the ground engageable wheels. In the case of two wheels ground engaging both the drive coupling and the general support is such that the wheels are differentially driveable and rotatable one with respect to the other.