Jumpsy (1 and 2)
Jumpsy is a doll that jumps rope. She has a very unusual mechanism. The first Jumpsy my sister acquired is in need of serious repairs and a replacement jump rope. After seeing the bad condition of the mechanism of the first Jumpsy, my sister decided to locate a working Jumpsy. Jumpsy 2 worked as soon as batteries were put into her battery compartment.
Jumpsy is very unstable when in motion. She will usually do 3 to 5 jumps before tipping. Jumpsy information can be found in US Patent 3603030 |
Figure 3 - Jumpsy's battery compartment is located in her lower back. The switch on her back sets her in motion. Once she is skipping rope, it is very hard to shut her off without getting your hand wound up in her rope. The spring was likely used to give the rope weight as well as some give when little hands got caught. I suspect many ropes got broken/removed because of captured hands.
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