About two years ago a symposium on children's poisons was held at the Los Angeles Children's Hospital. The moderator, Dr. A. Parmelee Sr., allowed me to exhibit various devices for attachment to aspirin bottles as aids in the prevention of aspirin poisoning.
I stated that for economic reasons the manufacturers will not change the design of the bottles, but they are willing to consider safety attachments to the necks of the bottles. There are some ingenious devices on the market today, but all involve the cap's coming off every time an aspirin is used, which has one big drawback; that is, failure of the parents to replace the cap. The device herein introduced takes that into consideration, as well as the short attention span of a child. Also, puzzles and combinations are confusing and out of most children's mental grasp.
The device (see figure) has two adjacent plastic wheels, each