Make a toaster go "ping"

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How would you go about making a toaster go "ping" when the timer is up?
I have a Dualit toaster which has a large empty space at the end where the controls are. There is a neon which is on whilst the timer is running, which could be tapped for power. Then when power goes away, actuate a bell.

I am thinking something simple and electromechanical, if possible. No microcontrollers, 12V transformers or apps!

As an aside, Google tells me that these already do go ping when the timer is up, but mine definitely doesn't.
 
Mine don't ping.
The mechanical timer is noisy so you can hear it stop. Well mine is
 
3d print a stick that goes on the timer knob.
As timer knob returns to off position, the stick hits and chimes a small brass bell.

(In the case of the image below the stick hits or plucks the string that suspends the bell.

 
All of the automatic toasters I've come across, shoot the bread out the slot at the top, once the time is up. Some rely upon the heating, and bending of a bi-metal strip, to release the latch/set the timing - others, use a solenoid, and an electronic timer.

Either type, would need an arm added, to the lift mechanism, which strikes a dome bell - but most people, hear the clatter of the lift mechanism without needing a bell.
 
Dualit toasters are around £200 and British made.
You can buy all the spare parts online and fix yourself.
I bought a bust one off eBay for £45 and swapped elements ect and cleaned up for £30.
No manual pop up.
Mechanical timer.
No ping.

Just buy a power cut/ failure plug in alarm.
That will go off when toaster has timed out.
 
I stopped using our Dualit toaster because if you didn’t notice it finish and get the bread out as soon as it was toasted, it dried the toast out. We still have ours in the loft. Clearing out my mums house, I saw that she has a 4 slice Dualit toaster in her loft too. It still works as I tested it.
 
Well my repairable Dualit Classic toaster makes a clockwork ticking sound when in use and a much, much louder mechanical clunk when it switches off.

No need for a ping, even with no hearing aids in.
 
A reception bell on a stand to set the height and a pivoted bar that is toppled by the ejected toast.
Dualit Classic is a manual lever to lift the toast. It's not ejected automatically.

I mean, how long does a round of toast take?
The Dualit Classic timer control has marks at roughly 2 and 3 minutes. Around the 2 +/- a bit is the setting we use.

I gave up on manual (bi-metal) timers, they are too variable. You do one slice, then the unit is still hot for the second one, so it over toasts.
It's not a bimetal (browning) control but a pure clockwork 'timer' and Dualit do caution that it takes less time for the second and less again for a third round... with suggestions for approximate settings to use. First 2+a bit. Second 2. Third 2 -a bit; with subsequent at around that I'd guess.

{They also say time depends a lot on thickness of bread and how dry (old) it is. Fresh takes longer than stale.}
 
It's not a bimetal (browning) control but a pure clockwork 'timer' and Dualit do caution that it takes less time for the second and less again for a third round... with suggestions for approximate settings to use. First 2+a bit. Second 2. Third 2 -a bit; with subsequent at around that I'd guess.

OK, so probably similar accuracy to an electronic version. Our electronic, also toasts the second batch with less time needed, simply due to starting with the toaster warm. We also find it toasts more, on the inner element sides, than the outer ones, so half-way through we spin the faces of the bread, to even it up.
 

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