Small Bakelite Signalling Lamp - UK Vintage Radio Repair and Restoration Discussion Forum

Gridiron · 18th Sep 2023, 9:57 am

I hope this is in the right section. This lamp was included with a ww1 normal size lamp I bought at the last RWB BVWS auction.
It has JL on the back, which, I assume, stands for Joseph Lucas and has a plastic plug similar to the one for the normal size lamp.
Possibly for use as a toy or for Boy Scouts?
Has anyone seen one of these before?

Silicon · 18th Sep 2023, 1:23 pm

Some military receivers and transmitters used plug-in 'task lights' to illuminate tuning dials, pocket watches, etc when the equipment was used in a darkened room.

What is the bulb voltage?

Does the bakelite have an external screw thread?

M0FYA Andy · 18th Sep 2023, 6:03 pm

Every 'Lamp, Signalling, Daylight' had one of these as part of the accessories packaged with the unit. I assume it was so the operator could see what he was doing whilst setting up and using the Lamp.

Lamp, Signalling, Daylight will get you lots of Google hits.

Andy

Gridiron · 18th Sep 2023, 9:02 pm

Thanks for the replies.
The bulb in the small lamp as found was o/c, couldn't see any information on it, I put in a 2.5 volt bulb to test it. It has a hook on the back.
Searching as Andy suggested, this lamp appears to have been supplied with the WW2 MK 2 signalling lamp rather than the WW1 version.

M0FYA Andy · 18th Sep 2023, 10:57 pm

As mentioned on earlier posts, I had the job of dismantling a large pile of these lamp units back in 1969, to salvage the reflectors, all else was scrap. I ended up with a large box of the little inspection lamps, which may well still be in my loft to this day! I recall there were two variants, some with a bakelite body as in the OP's picture, and some with a chrome-plated metal body.

Andy

18th Sep 2023, 9:57 am	#1
Gridiron Heptode Join Date: Apr 2010 Location: West Midlands, UK. Posts: 629	Small Bakelite Signalling Lamp I hope this is in the right section. This lamp was included with a ww1 normal size lamp I bought at the last RWB BVWS auction. It has JL on the back, which, I assume, stands for Joseph Lucas and has a plastic plug similar to the one for the normal size lamp. Possibly for use as a toy or for Boy Scouts? Has anyone seen one of these before? Attached Thumbnails

18th Sep 2023, 1:23 pm	#2
Silicon Octode Join Date: Jun 2007 Location: Coulsdon, London, UK. Posts: 1,998	Re: Small Bakelite Signalling Lamp Some military receivers and transmitters used plug-in 'task lights' to illuminate tuning dials, pocket watches, etc when the equipment was used in a darkened room. What is the bulb voltage? Does the bakelite have an external screw thread? Last edited by Silicon; 18th Sep 2023 at 1:26 pm. Reason: more info

18th Sep 2023, 6:03 pm	#3
M0FYA Andy Nonode Join Date: May 2007 Location: Preston, Lancashire, UK. Posts: 2,483	Re: Small Bakelite Signalling Lamp Every 'Lamp, Signalling, Daylight' had one of these as part of the accessories packaged with the unit. I assume it was so the operator could see what he was doing whilst setting up and using the Lamp. Lamp, Signalling, Daylight will get you lots of Google hits. Andy

18th Sep 2023, 9:02 pm	#4
Gridiron Heptode Join Date: Apr 2010 Location: West Midlands, UK. Posts: 629	Re: Small Bakelite Signalling Lamp Thanks for the replies. The bulb in the small lamp as found was o/c, couldn't see any information on it, I put in a 2.5 volt bulb to test it. It has a hook on the back. Searching as Andy suggested, this lamp appears to have been supplied with the WW2 MK 2 signalling lamp rather than the WW1 version.

18th Sep 2023, 10:57 pm	#5
M0FYA Andy Nonode Join Date: May 2007 Location: Preston, Lancashire, UK. Posts: 2,483	Re: Small Bakelite Signalling Lamp As mentioned on earlier posts, I had the job of dismantling a large pile of these lamp units back in 1969, to salvage the reflectors, all else was scrap. I ended up with a large box of the little inspection lamps, which may well still be in my loft to this day! I recall there were two variants, some with a bakelite body as in the OP's picture, and some with a chrome-plated metal body. Andy