A couple of sirens in local museums (UK).

[SCP01]

Apologies for the quality of the photos but they were taken on my phone or are stills off my digital video camera.

First off is in a local aviation museum based on the site of a WWII airfield..













The next one is interesting. This siren was located at the Garrett factory in Leiston, Suffolk during WWII and is now on show in the museum on the site. The caption below the siren reads:

This siren was situated on the site during the Second World War and served as an early warning system for the entire town. During the peak bombing raid period of 1941 it was sounded no less than 511 times.





Below the siren are a couple of bomb casings..



The caption reads:

These two bombs were part of a consignment dropped on Leiston in Feb 1941, ten(?) of which fell on the machine shop (at Garrett ) but failed to explode, possibly due to being dropped from insufficient height to prime themselves. The two bombs were presented to Garrett's by the bomb disposal unit as a memento of a lucky escape.

Museum has a simple website at http://www.longshop.care4free.net/

[AllSafe]

First one is a Brooks Motors siren, notable for having fully unitized construction, with the stators and motor going together as one unit. This is unfortunate because it makes them exceedingly difficult to repair if one of the stators cracks. Did you get what the label on it says?

[SCP01]

First one is a Brooks Motors siren, notable for having fully unitized construction, with the stators and motor going together as one unit. This is unfortunate because it makes them exceedingly difficult to repair if one of the stators cracks. Did you get what the label on it says?

That's the one. No luck with the label, I thought I'd captured it but couldn't find it afterwards

[hobbeekid]

Wow! that garrett factory Carter has some high mileage on it! or should I say high kilometers, wow 500 times condensed,thats way more action than any general us civil defense/tornado siren has or will ever see in one year. Maybe in a lifetime of service.VFD sirens might reach that number more quickly.Monthly tests once maybe twice a month in tornado prone areas plus sounding for warnings still would'nt add up to the service hours that those carters and Castle mfg.wwII era sirens put in.Anyone else agree/disagree,please correct me if I'm wrong.....

[Gents']

First one is a Brooks Motors siren, notable for having fully unitized construction, with the stators and motor going together as one unit. This is unfortunate because it makes them exceedingly difficult to repair if one of the stators cracks. Did you get what the label on it says?

Dan will be able to shed some light on what is written on the plate. All I can tell you is that they are made in Huddersfield, West Yorkshire... as can just be made out in the picture.

[danwisbey85]

OK, here goes what says on mine:

* Means unable to read

Made in England
B.S.S 168-1936

Brook Motors LTD
Huddersfield
A.C Motor 3 Phase
F29/B7 726 (I think, hard to read)

Full Load Speed Volts
2840 (RPM)
346/440 Voltage settings
4/5 HP
Full Load Amps: 7.5
50 (no idea????)
Rating: 15MIN

I will post a picture later, as Photobucket is having maintenance!

Dan.

[Gents']

While on the topic of British sirens:

Any filthy rich Americans on this board, who have bag loads of cash lying around, who want to buy a tri-tone Gents' ?

Offers welcome

[Justin]

Full Load Speed Volts
2840 (RPM)
346/440 Voltage settings
4/5 HP
Full Load Amps: 7.5
50 (no idea????)
Rating: 15MIN

Ω
Omega sign? That would be ohms or the resistance of the motors. Sort of makes sense considering that 346V at 7.5A is around 6.92Ω and 440V at 7.5A is 8.8Ω. It is three-phase after all.

[JasonC]

Full Load Speed Volts
2840 (RPM)
346/440 Voltage settings
4/5 HP
Full Load Amps: 7.5
50 (no idea????)
Rating: 15MIN

Ω
Omega sign? That would be ohms or the resistance of the motors. Sort of makes sense considering that 346V at 7.5A is around 6.92Ω and 440V at 7.5A is 8.8Ω. It is three-phase after all.

That would be 50Hz. Motors are inductive loads, thereby changing resistance, so a set ohmage for a motor is impractical.

[Justin]

Full Load Speed Volts
2840 (RPM)
346/440 Voltage settings
4/5 HP
Full Load Amps: 7.5
50 (no idea????)
Rating: 15MIN

Ω
Omega sign? That would be ohms or the resistance of the motors. Sort of makes sense considering that 346V at 7.5A is around 6.92Ω and 440V at 7.5A is 8.8Ω. It is three-phase after all.

That would be 50Hz. Motors are inductive loads, thereby changing resistance, so a set ohmage for a motor is impractical.

I stand corrected.
You learn something new everyday. Thanks Jason.