Darran Cowd
13 years ago
I'd be grateful for any info, haven't a clue what its supposed to do, its made by davis of Derby and has been catalogued as a valve, which doesn't seem right!
Cheers,
Darran
đŸ”—Personal-Album-3279-Image-69142[linkphoto]Personal-Album-3279-Image-69142[/linkphoto][/link]
Yorkshireman
13 years ago
I've seen something like it before with the same disc-shaped bit.

IIRR they were called atmospheric release valves - but what they did and how they work is beyond me.
spitfire
13 years ago
Is it the body of a vacuum brake?
spitfire
davetidza
13 years ago
Whilst I cannot add a suggestion about the item - there is an article about Davis of Derby in 'Mining History' 14:2 (which can be downloaded from the PDMHS website. I believe Davis still exist - although whether they would know??
staffordshirechina
13 years ago
Davis mainly made/make electrical equipment.
However, they did do other stuff. They made some surveying items. They could have made valve bits but not really their thing.
I don't recognise it from your photo.

They are still in business - we bought a new hailer system from them last year.
ICLOK
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13 years ago
"spitfire" wrote:

Is it the body of a vacuum brake?



I'm with Spitfire on this, I seem to recognise this from vac brake equipment somewhere....
Aaaaaaaaaaaaaaaaaaagh Creeper!!!!!
Boy Engineer
13 years ago
No. Is that an acceptable answer?



I have two neighbours who work for Davis so I'll ask them at the weekend.
ChrisJC
13 years ago
How about some more pictures, perhaps one of the rear?

Chris.
Darran Cowd
13 years ago
More pictures as requested...

đŸ”—Personal-Album-3279-Image-69164[linkphoto]Personal-Album-3279-Image-69164[/linkphoto][/link]
đŸ”—Personal-Album-3279-Image-69163[linkphoto]Personal-Album-3279-Image-69163[/linkphoto][/link]
đŸ”—Personal-Album-3279-Image-69161[linkphoto]Personal-Album-3279-Image-69161[/linkphoto][/link]

Cheers,

Darran
nicholashaynes
11 years ago
Hi Darran, just enrolled and in the process of looking through the site when I came across your mystery objects.The first one looks like a bespoke manometer (methane drainage house ?).The other maybe a part of a pneumatic spot lamp.If they have since been identified do let us know what they are.If a reprobate called Steve Oxley still frequents the museum say hello from is old mucker.
Nick Haynes
Morlock
11 years ago
"ICLOK" wrote:

"spitfire" wrote:

Is it the body of a vacuum brake?



I'm with Spitfire on this, I seem to recognise this from vac brake equipment somewhere....



Almost certain you are correct gentlemen, the spikey bit probably carried the wooden handle.

http://www.gwsr.com/footplate/VirtualFootplate.html 
inbye
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11 years ago
Almost certainly an item of lamproom equipment. Davis Derby produced a large range of flame safety lamps & prior to WWII were commonly locked by a lead rivet. The object is part of a device used to cast batches of lead rivets, the drilled plate would be partially rotated to trim the spru.
Regards, John...

Huddersfield, best value for money in the country, spend a day there & it'll feel like a week........
Morlock
11 years ago
I did wonder what the extra handle was for and your suggestion does explain a lot.
staffordshirechina
11 years ago
I would say Inbye is a bit wide of the mark.

The Davis plate on the item is a relatively modern one, there is Coal Board white paint in places and the holes are countersunk.

The centre spring and pivot together with the flat outer ring surface would indicate to me that it should be fitted to a mating surface. This would support the vacuum valve theory above. However I still don't think Davis were in that market. Not certain though......
inbye
  • inbye
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11 years ago
Can't put my hands on the advert showing this at the mo'. It's somewhere amongst my lamp memorabilia, I'll post if I find it.
Regards, John...

Huddersfield, best value for money in the country, spend a day there & it'll feel like a week........
inbye
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10 years ago
Said I'd post this when I came across it & just found it sorting thro' some mining stuff.

đŸ”—Personal-Album-1583-Image-97504[linkphoto]Personal-Album-1583-Image-97504[/linkphoto][/link]

Looks like mine has a screw down base, other than that very similar. Hope this helps...
Regards, John...

Huddersfield, best value for money in the country, spend a day there & it'll feel like a week........
Peter Burgess
10 years ago
"inbye" wrote:

Said I'd post this when I came across it & just found it sorting thro' some mining stuff.

đŸ”—Personal-Album-1583-Image-97504[linkphoto]Personal-Album-1583-Image-97504[/linkphoto][/link]

Looks like mine has a screw down base, other than that very similar. Hope this helps...

What a fascinating item.
royfellows
10 years ago
Peter, any date on the catalogue or whatever?
My avatar is a poor likeness.
somersetminer
10 years ago
"inbye" wrote:

Said I'd post this when I came across it & just found it sorting thro' some mining stuff.

đŸ”—Personal-Album-1583-Image-97504[linkphoto]Personal-Album-1583-Image-97504[/linkphoto][/link]

Looks like mine has a screw down base, other than that very similar. Hope this helps...



making a rough count of a quarter section of the holes in Darrans photo and multiplying I get 90. If I did it right I reckon we have a winner!

Roy Morton
10 years ago
An interesting device, but I wonder how the metal was introduced into the mould?
Could prove to be a tedious task injecting it into 90 little sections.
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