Abstract: A locking device for a vehicle platform adapted for securing a corner fitting of a shipping container wherein the device has a housing fixidly mounted on and beneath the upper surface of the platform, having a neck member and a horizontal latching member mounted within the housing when the device is in a first position adapted to being elevated to enter a slot in a corner fitting when a container is placed on the platform with the latching member being capable of being rotated to a second position for elevation and rotation to engage an inner surface of the corner fitting to lock the container fitting to the upper surface of the platform and capable of being returned to a first position whereby it is beneath the upper surface of the platform.

Abstract: This invention pertains to a removable constrainer for shipping containers whereby the holds of bulk carriers can be rapidly converted to container carriers by use of a bridge means inserted in between the ends of containers and having chocks mounted on the bridge to constrain lateral movement of the containers with respect to the bridge, the bridge being removably mounted on opposite walls of the hold of the vessel in which it is employed.

Abstract: A selectively operable stacker key locking device adopted to secure containers either in a vertical or horizontal stacked relation or to secure a container to a base support.

Abstract: A tensible shipping container reinforcement bar having connectors on each end thereof the ends adapted to attach to diagonally opposite corner fittings of shipping containers. The bar having a compressor device capable of expansion located at a point intermediate in the bar so that when the ends of the bar are attached to diagonally opposite corners, the bar is expanded under tension. The bar is designed to prevent warping of the walls and end of the shipping containers when containers are subjected to high stress forces placed on them due to motion of containers in shipping, especially in ships. In a preferred embodiment the bar includes a device for adjusting the degree of tension provided by the bar.