Identification of an unknown component - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

Station X · 24th Oct 2014, 9:17 am

Looks possible. Is the unsprung rod hollow with screwed connections each end so that connections can be made to pipe work and fluid passed through it?

What is the bridge piece between the two rods attached to?

What material are the two collars made from? They look like some kind of ferrite, but this would be too brittle to take the locking screws.

Radio Wrangler · 24th Oct 2014, 9:50 am

Some sort of adjustable coupling arrangement to bridge two cavities of a VHF/UHF cavity filter?

These things can be quite large... some 2 metre diplexers have been made from several scrounged aluminium beer kegs

David

reneblc · 24th Oct 2014, 11:07 am

There are the same hole on both sides of the base but do not extend through the base from side to side.
René

reneblc · 24th Oct 2014, 11:21 am

The 2 collars are made of brass - somewhat corroded.
The bridge piece between the two rods, above the collars, looks like a stapple, likely to maintain pressure on the diameter part of the ring.
The two stems are rods, not tubes and there is no holes.

Again thanks for all your suggestions. René

Station X · 24th Oct 2014, 12:03 pm

Thanks for the update.

The two screws in tapped holes on either side of the casting appear to lock the rods in place. Does that mean that your have to loosen one screw in order to compress or decompress the spring?

I'm beginning to wonder whether the tilt of the ring is controlled by some exterior mechanism. Alternatively perhaps its tilt was adjusted then left in a fixed position. The adjusting features seem over elaborate though.

reneblc · 25th Oct 2014, 7:58 am

Holes on either side of the base are not threaded. These are just blind holes that would probably get studs for fastening. I removed the blue paint for the picture.

René

60 oldjohn · 25th Oct 2014, 10:29 am

Just a wild guess. Part of a vending machine? Possibly where you grab a teddy bear and hope you can get it to the dropping point without dropping it to soon. Or part of a Juke box?
Is the copper ring attached or could it have dropped over the rods in the junk box?

John.

reneblc · 27th Oct 2014, 8:15 am

For the moment all ideas are possible.
I also question OM from ancient times around me, but nobody knows.

René

reneblc · 28th Nov 2014, 4:58 pm

Finally I could identify this mysterious component.
This device was inside a coil, wound on a ceramic mandrel of about 4 cm diameter (in a power stage) : the copper ring (shorted coil) allowed for adjust the output power of the circuit.
That answer was given by an OM from ancient times : ON5IW.

Thank you all for attempts. René

24th Oct 2014, 9:17 am	#21
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: Identification of an unknown component Looks possible. Is the unsprung rod hollow with screwed connections each end so that connections can be made to pipe work and fluid passed through it? What is the bridge piece between the two rods attached to? What material are the two collars made from? They look like some kind of ferrite, but this would be too brittle to take the locking screws. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

24th Oct 2014, 9:50 am	#22
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,905	Re: Identification of an unknown component Some sort of adjustable coupling arrangement to bridge two cavities of a VHF/UHF cavity filter? These things can be quite large... some 2 metre diplexers have been made from several scrounged aluminium beer kegs David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done

24th Oct 2014, 11:07 am	#23
reneblc Retired Dormant Member Join Date: Aug 2005 Location: Braine-le-Comte, Belgium Posts: 26	Re: Identification of an unknown component There are the same hole on both sides of the base but do not extend through the base from side to side. René Attached Thumbnails

24th Oct 2014, 11:21 am	#24
reneblc Retired Dormant Member Join Date: Aug 2005 Location: Braine-le-Comte, Belgium Posts: 26	Re: Identification of an unknown component The 2 collars are made of brass - somewhat corroded. The bridge piece between the two rods, above the collars, looks like a stapple, likely to maintain pressure on the diameter part of the ring. The two stems are rods, not tubes and there is no holes. Again thanks for all your suggestions. René

24th Oct 2014, 12:03 pm	#25
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: Identification of an unknown component Thanks for the update. The two screws in tapped holes on either side of the casting appear to lock the rods in place. Does that mean that your have to loosen one screw in order to compress or decompress the spring? I'm beginning to wonder whether the tilt of the ring is controlled by some exterior mechanism. Alternatively perhaps its tilt was adjusted then left in a fixed position. The adjusting features seem over elaborate though. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

25th Oct 2014, 7:58 am	#26
reneblc Retired Dormant Member Join Date: Aug 2005 Location: Braine-le-Comte, Belgium Posts: 26	Re: Identification of an unknown component Holes on either side of the base are not threaded. These are just blind holes that would probably get studs for fastening. I removed the blue paint for the picture. René Attached Thumbnails

25th Oct 2014, 10:29 am	#27
60 oldjohn Dekatron Join Date: Dec 2004 Location: East Yorkshire, UK. Posts: 3,990	Re: Identification of an unknown component Just a wild guess. Part of a vending machine? Possibly where you grab a teddy bear and hope you can get it to the dropping point without dropping it to soon. Or part of a Juke box? Is the copper ring attached or could it have dropped over the rods in the junk box? John.

27th Oct 2014, 8:15 am	#28
reneblc Retired Dormant Member Join Date: Aug 2005 Location: Braine-le-Comte, Belgium Posts: 26	Re: Identification of an unknown component For the moment all ideas are possible. I also question OM from ancient times around me, but nobody knows. René

28th Nov 2014, 4:58 pm	#29
reneblc Retired Dormant Member Join Date: Aug 2005 Location: Braine-le-Comte, Belgium Posts: 26	Re: Identification of an unknown component Finally I could identify this mysterious component. This device was inside a coil, wound on a ceramic mandrel of about 4 cm diameter (in a power stage) : the copper ring (shorted coil) allowed for adjust the output power of the circuit. That answer was given by an OM from ancient times : ON5IW. Thank you all for attempts. René