Abstract: A safety clamping device for use by climbers, combined with a fiber reinforced plastic rail upon which the clamp ultimately slides or grips. The clamping device has a pivotally mounted plate therein having a triggering arm extending outward for being engaged by a rope or chain, having one end carried by the belt mounted about the waist of the climber and the other being fastened to the triggering arm so that the climber slidably carries the clamping device upon the rail as he moves downward and upward on the ladder to which the rail is fastened. An inner end of the plate of the clamp is cam shaped and which is biased by a spring against the rail, but which, as supported by the climber, offsets the gripping by the cam so that the clamp easily slides with the climber as he ascends or descends the ladder, but ultimately grips the rail if the climber descends or falls rapidly, firmly engaging the rail to tightly clamp thereagainst as a safety device.

Abstract: Lubricant for internal combustion engines comprising lubricating oil components including dispersing substances so that water insoluble components of the lubricant may be dispersed in the water so that no visible oil slick will remain.