Burglar Alarm - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

camtechman · 31st Dec 2014, 12:27 pm

Found it, here's the link to the machine and the audio clip:
http://lates.sciencemuseum.org.uk/im.../10212088.aspx

Gazmac72 · 15th Jun 2016, 9:29 pm

Quote:

Originally Posted by Michael Maurice

I've heard but never physically seen one that the earliest burglar alarm system consisted of a gramophone that played a specially made record to play down a telephone line to the Police Station.
Does anyone know of or have such a system?

Hi Michael

Just come across your quote.

I came across said speech dialler back in 1998 whilst working on a domestic alarm in Whetstone.
The date on the record was 1974, and when played through a gramophone is played a message " Police Scotland Yard Police Scotland Yard Whetstone 4##2
The recording is in Chumley Warner style queens English.

Fascinating piece of equipment which I once took to my supplier to take a look at it. Got a lot of interest. Really don't know what to do with it, I've had it in my workshop ever since.

Regards

Vakito227 · 21st Jun 2016, 12:56 am

I remember seeing one of these being shown on 'Britain On Film' from the 60s https://youtu.be/6z9W9tgcjy4?t=8m18s

trsomian · 22nd Jun 2016, 8:01 am

I remember in the 1980s a man I used to work with had the remains of several of these machines under his bench. He had worked for AFA in the 1960s in Leeds, Bradford, and surrounding areas, mainly serving the banking community I believe. I don't remember much about them, except that there was a large toothed wheel under the platter somewhere with 3 lots of 9 notches or teeth, which worked a contact to dial 999. The whole lot was driven by a fairly early brushless DC motor, with a circuit board & 4 germanium transistors (AC153K I think) screwed to the side of the motor. I still have one of the motors in the loft. He called them 999 units.

21st Jun 2016, 12:56 am	#23
Vakito227 Hexode Join Date: Apr 2016 Location: Yeadon, West Yorkshire, UK. Posts: 251	Re: Burglar Alarm I remember seeing one of these being shown on 'Britain On Film' from the 60s https://youtu.be/6z9W9tgcjy4?t=8m18s

22nd Jun 2016, 8:01 am	#24
trsomian Hexode Join Date: Oct 2010 Location: Box End, Beds. UK. Posts: 271	Re: Burglar Alarm I remember in the 1980s a man I used to work with had the remains of several of these machines under his bench. He had worked for AFA in the 1960s in Leeds, Bradford, and surrounding areas, mainly serving the banking community I believe. I don't remember much about them, except that there was a large toothed wheel under the platter somewhere with 3 lots of 9 notches or teeth, which worked a contact to dial 999. The whole lot was driven by a fairly early brushless DC motor, with a circuit board & 4 germanium transistors (AC153K I think) screwed to the side of the motor. I still have one of the motors in the loft. He called them 999 units.