Abstract: In a rotary tube locking mechanism, the rotary tube itself is bent to form a controlled bulge. The guide plate cooperates with this controlled bulge to provide an anti-racking function.

Abstract: A hanger which supports a temporary deck in an intermodal container. The hanger is removably secured to a ledge, which is part of the container, and extends downwardly toward the floor. One set of hangers is placed along each wall and the temporary deck is extended between them. The hanger itself includes a hook end and a link pivotally secured to a lower position. The link pivotally carries the hanger strap that extends down the wall. The hook end fits over the top of the ledge while the link contacts it on the bottom in a pliers-like grip. As vertical force is placed upon the hanger strap, the grip of the hook end and link increases.

Abstract: A helical coil comprising a plurality of turns of bar stock is mounted on an expanding mandrel which is operated by a hydraulic cylinder or the like to expand the internal circumference of the coil against the resilient resistance thereof. A severing device is then employed to form a cut across the turns of the coil so as to sever each turn as a separate ring having a gap therein corresponding in width to the thickness of the severing device. The expanding mandrel is then released so as to allow the rings to spring back to their original circumference. In this way, the gap in each ring is closed. Each ring may then be flattened to remove the helical pitch so that the ring will be in a single plane with the severed ends of the ring aligned. The severed ends may be welded or otherwise joined. The disclosed machine preferably employs a rotary abrasive disc for forming the cut across the turns of the coil. The width of the cut corresponds to the thickness of the abrasive disc.