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Thread: What are these?

  1. #1
    Join Date
    Apr 2008
    Location
    McKinney Texas
    Posts
    475

    Default What are these?

    What are these? Appears to be a old monitoring system of some sort from the 1970's (House built in 1978). There was one of these in every room and also one in the attic. They appeared to be mechanial or electro-mechanical but no wiring was seen. Two had a metal ear sticking out that read "REWIND".

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  2. #2
    Stephen G's Avatar
    Stephen G Guest

    Default Re: What are these?

    Fire Alarm, and they would be 40 years old, my mom had them before the smoke detectors of the 70s became mandatory. Pull on the lever sets the bells. Very loud...


  3. #3
    Join Date
    Feb 2008
    Location
    New York
    Posts
    869

    Default Re: What are these?

    Heat detectors

    Steven Turetsky, UID #16000002314
    homeinspectionsnewyork.com
    eifsinspectionsnewyork.com

  4. #4
    Join Date
    Apr 2008
    Location
    McKinney Texas
    Posts
    475

    Default Re: What are these?

    Stephen, the ones in you Mom's house had no wiring, right? I did not find any wiring. Wonder how they worked? Looked like a wind-up.


  5. #5
    Stephen G's Avatar
    Stephen G Guest

    Default Re: What are these?

    Gene, no wires at all. Clock spring, wind it up, or rewind
    Steven is right as well.
    The heat from the flames in a fire would melt that brass/bronze ring allowing the clock spring to let the clapper go, and as as mentioned, very loud,,,that first pic looks to have a cosmetic cover, maybe to change the sound



    Quote Originally Posted by Steven Turetsky View Post
    Heat detectors



  6. #6
    Join Date
    Apr 2008
    Location
    McKinney Texas
    Posts
    475

    Default Re: What are these?

    Thanks guys!


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