New Photocell Eyes Protect Baby Cribs From Kidnapers (Jun, 1934)
New Photocell Eyes Protect Baby Cribs From Kidnapers
ANOTHER use has been found for that mysterious power known as electricity, and this time it will find favor with all mothers. The photo-electric cell, popularly known as the “eye which never sleeps,” has been mounted on baby’s crib. It watches throughout the night, ringing an alarm the instant anyone tries to reach into the crib.
A light source concealed in drapery at the foot of the crib is focused on the electric eye mounted near the head. All visible light rays are filtered out with color screens, but the eye responds to the “black light” remaining. It is impossible to remove baby from the crib without crossing the protecting beam of light. The watchful cell responds instantly, closing a relay which sets off alarm bells.