Guardsman and Vanguard Alarms: A Technology's Last Gasp

Описание: For more than a century, mechanical heat-activated alarms dominated the fire safety market, only being fully replaced by modern electronic smoke detectors starting in the 1980s. In this episode, we look at two different models - the Guardsman and the Vanguard - the latter of which conceals a fascinating history of false advertising and the rise and fall of a major - but forgotten - American corporation.


0:00 Intro
0:41 Guardsman Alarm
3:44 Vanguard Alarm: Intro
4:00 Interstate Engineering
6:30 Figgie International
8:34 Vanguard Models + Prices
9:45 Vanguard V5-40FT Disassembly
11:51 Downfall of Figgie International
14:26 Outro


SOURCES

https://patents.google.com/patent/US1...
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https://www.chicagotribune.com/1997/0...

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