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Old 27th Oct 2020, 2:50 pm   #1
Uncle Bulgaria
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Default Anglepoise 1227 Bridle?

Does anyone have one - the piece that attaches the arm to the shade? I'd be glad of photos and measurements so I can make one up. My grandfather fixed it with a piece of Meccano which hasn't done wonders for the balance of the thing. Anglepoise haven't got any of these parts for the old 1227s (confusingly, their current iteration is the 'original 1227'), but I imagined it was the kind of thing a lot of you have as work lights...
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Old 27th Oct 2020, 3:41 pm   #2
KeithsTV
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Default Re: Anglepoise 1227 Bridle?

Here's a, not too brilliant, picture of my anglepoise with dimensions of the bridle

Keith
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Old 28th Oct 2020, 12:16 am   #3
Uncle Bulgaria
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Default Re: Anglepoise 1227 Bridle?

Thanks Keith!

I'm keen to imitate the original as closely as I can, so I'd be grateful for a side view too. Also, what are the fixings like? Are there just a couple of holes in the bridle, or does it have a shoulder or some other locating method?
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Old 28th Oct 2020, 7:57 am   #4
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Default Re: Anglepoise 1227 Bridle?

I'll take more pictures later today and make measurements on the bridle.

Keith
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Old 28th Oct 2020, 11:13 am   #5
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Default Re: Anglepoise 1227 Bridle?

Here are more pictures of the bridle plus measurements. There is a stud at each end to locate the lamp cover and a fibre washer between the stud and the cover.

The centre of the bridle is fixed to what I assume is a plastic block which is forced into the arm. I can't be sure of the dimensions as that would mean pulling it apart!

Let me know if you need any more measurements.

Keith
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Old 28th Oct 2020, 5:05 pm   #6
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Default Re: Anglepoise 1227 Bridle?

(I have some here which look the same. One thing to note is that the bridle has rotational freedom on the end of the square tube - I think a square block is pushed in, and the bridle is riveted on to a bit of tube which goes up a hole in the middle of that block and which rotates within it. The wire goes up the middle of the tube).
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Old 28th Oct 2020, 7:32 pm   #7
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Default Re: Anglepoise 1227 Bridle?

That's correct it does rotate on the end of the tube and it looks like it's riveted on.

Keith
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Old 29th Oct 2020, 4:38 am   #8
Uncle Bulgaria
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Default Re: Anglepoise 1227 Bridle?

Keith, that's really marvellous! Many thanks.

The only thing I can't see on your drawing is the thickness of the stock. I'm guessing it's 1/32" steel? I've had the hinge elements apart and they appear to be plated brass with BA threads. The Anglepoise website's timeline says that various materials were used for the arms depending on availability, so presumably the rest was subject to the same supply constraints and it could be something else.

The fixing I have is a brass threaded tube projecting from the arm, with a half nut clamping the Meccano onto it. Interestingly, it swivels an amount each way before hitting a stop, so perhaps it's an original alternative fixing method? If it's home-made, it seems a bit neat for a man about to use a piece of Meccano.
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Old 29th Oct 2020, 8:03 am   #9
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Default Re: Anglepoise 1227 Bridle?

That's a nicer job than mine, which look riveted. Are you going to chain-drill and file those slots? Make it in ali - or plastic
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Old 29th Oct 2020, 9:09 am   #10
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Default Re: Anglepoise 1227 Bridle?

I've just measured the thickness and it's 1.2mm. It's magnetic so must be steel.

Rotation is restricted to 90 degrees either side of vertical so there must be some form of stop associated with the joint.

Keith
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Old 29th Oct 2020, 1:20 pm   #11
Uncle Bulgaria
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Default Re: Anglepoise 1227 Bridle?

Thank you again, Keith. It looks like the stop is part of that plug then. There's no key on my threaded piece, so I'll just have to snug it up tightly.

Mark - tempt me not! Yes, I'm planning to do it by hand and work it out, in steel for the springiness as it retains the shade. I could draw it up and look into laser cutting, I suppose, but the hinge pieces are uneven enough that I'm almost certain they were hand-finished so some idiosyncrasy is not a problem. Not that it matters at all, but it's nice to do a good job.
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Old 31st Oct 2020, 5:41 pm   #12
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Default Re: Anglepoise 1227 Bridle?

The slots follow the profile of the bridle, which is very gently wedge-shaped. It's going to be such a pain in the
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