page_title: Joy buzzer
hierarchical_section_title: Joy buzzer
caption_attribution_description: English: Diagram of the first joke buzzer, later joy buzzer, from United States patent application 1845735, by Soren Sorensen Adams.
context_page_description: A joy buzzer is a practical joke device that consists of a coiled spring inside a disc worn in the palm of the hand. When the wearer shakes hands with another person, a button on the disc releases the spring, which rapidly unwinds creating a vibration that feels somewhat like an electric shock to someone not expecting it.
context_section_description: A joy buzzer (also called a hand buzzer) is a practical joke device that consists of a coiled spring inside a disc worn in the palm of the hand. When the wearer shakes hands with another person, a button on the disc releases the spring, which rapidly unwinds creating a vibration that feels somewhat like an electric shock to someone not expecting it.
caption: Patent drawing, from Soren Adams's 1932 US patent application.
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