Baby Know It All
Baby Know It All is a Remco doll first produced in 1969. This doll sits in a feeding chair and will either jump up and down or shake her head when various pictures, in a slotted tray, are placed in front of her. This magic is accomplished through the use of a pair of magnetically activated switches hidden in the feeding chair's tray. An interesting feature of this doll is that her batteries are located in the chair. Her internal electro-mechanical system is powered through electrical contacts on her heels touching contacts in the footrest portion of the chair. Without the chair, the doll is pretty much useless.
Even though the doll came without the magnetic picture frame, we were able to get her to work by using handheld magnets. Her motor was seized up and required clock oil lubrication and some finger spinning to get started. She runs on 4 D cells - providing both negative 3 volts for shaking her head "no" and a positive 6 volts for making her jump up and down. She is pretty finicky and needs to be seated with a vertical posture to operate properly. Even then she may need to be nudged a little to switch between jumping and nodding.
Patent: US 3568361
Even though the doll came without the magnetic picture frame, we were able to get her to work by using handheld magnets. Her motor was seized up and required clock oil lubrication and some finger spinning to get started. She runs on 4 D cells - providing both negative 3 volts for shaking her head "no" and a positive 6 volts for making her jump up and down. She is pretty finicky and needs to be seated with a vertical posture to operate properly. Even then she may need to be nudged a little to switch between jumping and nodding.
Patent: US 3568361
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