What is this item for? - UK Vintage Radio Repair and Restoration Discussion Forum

davegsm82 · 30th Nov 2011, 10:18 pm

I pulled this out of a skip some time ago, even though I don't need it, i'd like to know what its for as I'm considering getting rid.

Its a generator of some description, permanent magnet I presume as it needs no exiter current. At approximately 1 RPM the output at the back appears to be from 170 to 210 Volts DC. If you really go for it then you can produce up to 500Volts. The connector on the back for some reason is terminated to a 3-pin 2a round pin lighting socket.

Housed in a home-made cut and riveted (proper rivets, hammered flat) and screwed to a wooden base with rubber feet. The handle doesn't give much away, but I can't help but think that it looks 'aircraft-y'. The Drive is on a ratchet, it turns the generator when rotated clockwise, slips when rotated anticlockwise.

Any advice appreciated.

Dave.

val33vo · 30th Nov 2011, 10:29 pm

It could be a ringing generator from a line test set used in a small telephone exchange, they could give you a nasty shock if you happened to be working on a line when somebody else wound the thing up, however If I remember correctly the main dynamotor ringing generators that started automatically when ever a call was initated shoved out in the region of 100v but of course with a hand cranked one that did not apply

regards

val33vo

Stockden · 30th Nov 2011, 10:37 pm

Is the yellow paint not a clue? It looks to me like the hand generator from a dinghy radio. British T-1333 perhaps (see 1/2 way down the page here).

Hugh

davegsm82 · 30th Nov 2011, 10:54 pm

Thank you val33vo and Hugh,

On close inspection it looks exactly like the generator in that box, right down the rivets on the handle and the ribs on the wheel. The 3 outputs on the back tie in with what is stated on the website.

I didn't realise it was that old, I would have put it at 60's or 70's.

Is this generator likely to be of any specific interest to anyone or shall I offer it through the usual channels?

Thanks, Dave.

Jim_746 · 30th Nov 2011, 11:06 pm

Would I be able to use it in the field of telephony? I'll drop you a PM.

davegsm82 · 30th Nov 2011, 11:10 pm

Quote:

Originally Posted by model746

Would I be able to use it in the field of telephony? I'll drop you a PM.

Wouldn't it need to be AC to ring a telephone bell?

This thing outputs DC.

Dave.

Jim_746 · 30th Nov 2011, 11:18 pm

Quote:

Originally Posted by davegsm82

Quote:

Originally Posted by model746

Would I be able to use it in the field of telephony? I'll drop you a PM.

Wouldn't it need to be AC to ring a telephone bell?

This thing outputs DC.

Dave.

Yes AC would be needed so that puts a stop to that idea. Well thanks anyway, I'm sure some one can find a use for it.(If they can't I might be able to find somthing for it

.) As an LT supply I bet it would make a novel door bell ringer.

Quote:

The hand generator delivered 6 volts LT and 350 volts HT.

AVO_VCM163 · 30th Nov 2011, 11:54 pm

Looks like a generator for HT and LT - I have one somewhere - that was used to operate a wireless set - possibly the 38 or similar. There should be two separate outputs if so, for the HT and LT.
It is also possible to modify to a rotary converter if it is this type by removing the gearbox and using the LT section as the "motor".

The handle has a left-handed thread on mine!
Roy

30th Nov 2011, 10:18 pm	#1
davegsm82 Heptode Join Date: Jan 2004 Location: Blyth, Northumberland, UK. Posts: 858	What is this item for? I pulled this out of a skip some time ago, even though I don't need it, i'd like to know what its for as I'm considering getting rid. Its a generator of some description, permanent magnet I presume as it needs no exiter current. At approximately 1 RPM the output at the back appears to be from 170 to 210 Volts DC. If you really go for it then you can produce up to 500Volts. The connector on the back for some reason is terminated to a 3-pin 2a round pin lighting socket. Housed in a home-made cut and riveted (proper rivets, hammered flat) and screwed to a wooden base with rubber feet. The handle doesn't give much away, but I can't help but think that it looks 'aircraft-y'. The Drive is on a ratchet, it turns the generator when rotated clockwise, slips when rotated anticlockwise. Any advice appreciated. Dave. Attached Thumbnails

30th Nov 2011, 10:29 pm	#2
val33vo Retired Dormant Member Join Date: Apr 2008 Location: Banffshire, Scotland, UK. Posts: 191	Re: What is this item for? It could be a ringing generator from a line test set used in a small telephone exchange, they could give you a nasty shock if you happened to be working on a line when somebody else wound the thing up, however If I remember correctly the main dynamotor ringing generators that started automatically when ever a call was initated shoved out in the region of 100v but of course with a hand cranked one that did not apply regards val33vo

30th Nov 2011, 10:37 pm	#3
Stockden Heptode Join Date: Mar 2008 Location: Forest of Dean, Gloucestershire, UK. Posts: 648	Re: What is this item for? Is the yellow paint not a clue? It looks to me like the hand generator from a dinghy radio. British T-1333 perhaps (see 1/2 way down the page here). Hugh Last edited by Stockden; 30th Nov 2011 at 10:38 pm. Reason: bracket missing

30th Nov 2011, 10:54 pm	#4
davegsm82 Heptode Join Date: Jan 2004 Location: Blyth, Northumberland, UK. Posts: 858	Re: What is this item for? Thank you val33vo and Hugh, On close inspection it looks exactly like the generator in that box, right down the rivets on the handle and the ribs on the wheel. The 3 outputs on the back tie in with what is stated on the website. I didn't realise it was that old, I would have put it at 60's or 70's. Is this generator likely to be of any specific interest to anyone or shall I offer it through the usual channels? Thanks, Dave.

30th Nov 2011, 11:06 pm	#5
Jim_746 Pentode Join Date: Jul 2010 Location: Leyland, Nr. Preston, Lancashire, UK. Posts: 191	Re: What is this item for? Would I be able to use it in the field of telephony? I'll drop you a PM. __________________ "And what on earth are you going to do with that?"

30th Nov 2011, 11:54 pm	#8
AVO_VCM163 Retired Dormant Member Join Date: Mar 2008 Location: Hampshire, UK. Posts: 297	Re: What is this item for? Looks like a generator for HT and LT - I have one somewhere - that was used to operate a wireless set - possibly the 38 or similar. There should be two separate outputs if so, for the HT and LT. It is also possible to modify to a rotary converter if it is this type by removing the gearbox and using the LT section as the "motor". The handle has a left-handed thread on mine! Roy