A few yaers ago I represented a company that manufactured "Tilt Switches". Basicly, it was a glass bulb with some mercury in it and 2 wires fused through the glass (same principal as a home thermostat). When the switch was attached to an object, any movement would cause the mercury to make the connection and any number of things could be activated ...., car alarms, horns, sirens, llights, etc. Maybe something like this, something that created a loud noise or a flashing light, would be good to have in addition to the chains and cables. Shouldn't be too hard to make one. Ron in MN *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
> A few yaers ago I represented a company that manufactured "Tilt Switches". > Basicly, it was a glass bulb with some mercury in it and 2 wires fused through > the glass (same principal as a home thermostat). When the switch was attached > to an object, any movement would cause the mercury to make the connection and > any number of things could be activated ...., car alarms, horns, sirens, > llights, etc. Maybe something like this, something that created a loud noise > or a flashing light, would be good to have in addition to the chains and > cables. Shouldn't be too hard to make one. > Suggest that it would be good to use something besides mercury in such a device, as mercury is a pretty nasty metal. It is persistent and bioaccumulates in the ecosystem. see http://www.epa.gov/glnpo/bnsdocs/merccomm/ Here in the Great Lakes region, there is a concerted bi-nation effort to reduce mercury (and other toxics' use) to help preserve the Great Lakes ecosystems. See: http://www.epa.gov/glnpo/p2/bns.html#Purpose Erik at the south end of Lake Michigan *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
On 20 Jun 2003 at 22:38, Erik Sprenne wrote: > > A few yaers ago I represented a company that manufactured "Tilt > Switches". > > Basicly, it was a glass bulb with some mercury in it and 2 wires > > fused > Suggest that it would be good to use something besides mercury in such > a device, as mercury is a pretty nasty metal. It is persistent and I've seen tilt switches made with little metal balls instead of mercury. My watch has one in it (to turn on the night light when I tilt my wrist to look at it.) Mike *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
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