You shouldn’t fall asleep at the wheel with this chin jabber on the job. Worn around the neck, it holds a sharp prong under the driver’s chin. If his head nods, the point quickly awakens him. Invented by K. H. Liman, of Rye, N.Y., it has a rubber knob below the tip to prevent serious injury.
Chin Jabber Wakes Drivers
No more dangerous drowsiness on long hauls