发明授权
摘要:
A turnover bar is disclosed having a hole engaging end portion. The bar is provided with self-removal mechanism including an external collar movable on the hole engaging portion of the bar. The collar is normally biased by an external spring at least to the end of the hole engaging portion of the bar. The collar is manually depressed against the bias of the spring in service to effect an engagement of the bar with a turnover hole provided in some portion of a drive mechanism. The biasing force of the spring is adequate to lift the bar and effect a removal of the bar from the hole after use lest the bar be forgotten.
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