Abstract: A log lifter has a support assembly engageable with an article, such as a log, to be lifted for elevating the article from a support surface with the assistance of a manipulating handle attached to the support assembly. Pivotally mounted on the handle is a hook which cooperates with a spike and a point mounted in juxtaposition on the support assembly to retain a log or other article on the log lifter.

Abstract: A tractor-trailer combination has a safety stop arrangement mounted on the trailer coupler base member for limiting relative pivotal movement of the trailer and tractor by engaging in a slot provided in the fifth wheel of the tractor and stopping undesirable movement. If sufficient force is created by the relative movement of the tractor and trailer, the tractor-trailer pin coupling will part before the break point of the safety stop arrangement is reached and the trailer will be separated from the tractor in order to prevent a serious jackknifing situation.