(OT) How did those old gas station bells work?...

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[John Doe]

Kathy Kehoe <kathyckehoe@gmail.com> wrote:

I\'m guessing you might need to adjust your Google Groups settings so that it
does not remove crossposted groups, or so that it does not post only to the
group you are subscribed, or something like that.

 

[server]

Kathy Kehoe <kathyckehoe@gmail.com> wrote in
news:120a0591-fd50-45b6-80ec-79a46c9a7456n@googlegroups.com:

On Friday, September 22, 2017 at 8:13:45 AM UTC-4, Foxs Mercantile
wrote:
On 9/22/2017 2:16 AM, rickman wrote:
Might have run off the air compressor which remains pressurized
for some time after a power failure. It\'s hard to imagine such
a small change in volume producing enough work to ring a bell.
In the 4 stations I worked at as a gopher in the late \'60s, NONE
of them had electric bells.

And NO, the hose wasn\'t full of air. It was full of oil.

The striker would hit the bell going up when someone rolled over
the hose, and again on the way down when they rolled off the
hose.

Hence the da-ding every time.

The hoses were air filled with capped ends, and the pressure
differential flipped a switch and that powered a solenoid which then
struck the bell.

Same thing for road lane vehicle counting machines which cops put
out in place to place from time to time.

Air works just fine.

 

[Lasse Langwadt Christensen]

tirsdag den 24. maj 2022 kl. 18.19.28 UTC+2 skrev DecadentLinux...@decadence.org:

Kathy Kehoe <kathy...@gmail.com> wrote in
news:120a0591-fd50-45b6...@googlegroups.com:

On Friday, September 22, 2017 at 8:13:45 AM UTC-4, Foxs Mercantile
wrote:
On 9/22/2017 2:16 AM, rickman wrote:
Might have run off the air compressor which remains pressurized
for some time after a power failure. It\'s hard to imagine such
a small change in volume producing enough work to ring a bell.
In the 4 stations I worked at as a gopher in the late \'60s, NONE
of them had electric bells.

And NO, the hose wasn\'t full of air. It was full of oil.

The striker would hit the bell going up when someone rolled over
the hose, and again on the way down when they rolled off the
hose.

Hence the da-ding every time.
The hoses were air filled with capped ends, and the pressure
differential flipped a switch and that powered a solenoid which then
struck the bell.

Same thing for road lane vehicle counting machines which cops put
out in place to place from time to time.

Air works just fine.

https://youtu.be/mjVz-72r44g

 

[John Sanders]

On Tuesday, May 24, 2022 at 11:41:06 AM UTC-5, Lasse Langwadt Christensen wrote:

tirsdag den 24. maj 2022 kl. 18.19.28 UTC+2 skrev DecadentLinux...@decadence.org:
Kathy Kehoe <kathy...@gmail.com> wrote in
news:120a0591-fd50-45b6...@googlegroups.com:

On Friday, September 22, 2017 at 8:13:45 AM UTC-4, Foxs Mercantile
wrote:
On 9/22/2017 2:16 AM, rickman wrote:
Might have run off the air compressor which remains pressurized
for some time after a power failure. It\'s hard to imagine such
a small change in volume producing enough work to ring a bell.
In the 4 stations I worked at as a gopher in the late \'60s, NONE
of them had electric bells.

And NO, the hose wasn\'t full of air. It was full of oil.

The striker would hit the bell going up when someone rolled over
the hose, and again on the way down when they rolled off the
hose.

Hence the da-ding every time.
The hoses were air filled with capped ends, and the pressure
differential flipped a switch and that powered a solenoid which then
struck the bell.

Same thing for road lane vehicle counting machines which cops put
out in place to place from time to time.

Air works just fine.
https://youtu.be/mjVz-72r44g

All the ones I saw had a hose that was filled with a
quantum vacuum. When the car rolled over the
hose it collapsed the wave function and a muon
was fired down the hose. The round thing at the end
of the hose, mounted on a wall usually, accelerated
the muon to super luminal speeds at which point
thousands of leptons were released and when they
hit your head, it made you think there was a ringing
sound due to the observer effect.