What are These Odd Little Slabs of Metal I Keep Finding in Field?

Please post any finds here that you wish help with identification.
detectorman5050
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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by detectorman5050 » Fri Dec 15, 2017 10:46 pm

@Koala, I agree that the fonts look 20th Century.

@Dioz, just checked, and it's not magnetic.

@Steve, I reckon the lettering is very slightly raised. Sorry, I won't be able to do any electrical testing tonight. Though I just checked the Target ID on a Makro Racer 2, and it's coming up at 49/50. A pretty low ID, I'd have thought it was lead from that ID, but am not sure.


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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by Twit » Fri Dec 15, 2017 11:01 pm

Once upon a time....
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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by Fusion » Sat Dec 16, 2017 12:57 am

It's almost 100% going to be a spacer block for a linotype machine. It's made from 'Type Metal', a lead alloy that shrinks very little when it solidifies, so it makes a good impression when cast. Typically 80% lead, there's different alloys used, but they can't be re-melted and re-used forever, the alloy mix goes 'off', so they eventually end up scrapped. Secondary uses include casting bullets/musket balls, which is probably why they end up in fields, miles from the print-works.
The markings on it may indicate the size, or the particular alloy composition.
:(

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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by fred » Sat Dec 16, 2017 4:16 am

Looks like a spacer for printing to me too. I used to pull hundreds of them from out of the Thames just down the road from Fleet Street. However, they seem to turn up everywhere. ::g

The letters are likely to be the manufacturer on the left, the machine or typeface in the middle and the size on the right.

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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by detectorman5050 » Sat Dec 16, 2017 11:08 am

I see three mentions that it's something to do with printing, so I reckon that's what it is. Thanks for all your suggestions, very interesting.
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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by Phil2401 » Sat Dec 16, 2017 1:26 pm

My eyesight isn't that good, but could the lettering be L20mm? Unlikely since that doesn't relate to the actual dimensions but just a thought.
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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by Blackadder43 » Sat Dec 16, 2017 1:58 pm

detectorman5050 wrote:
Sat Dec 16, 2017 11:08 am
I see three mentions that it's something to do with printing, so I reckon that's what it is. Thanks for all your suggestions, very interesting.
Oooooh I claim first dibs on the printing claim =)) =))
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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by bsabill » Sat Dec 16, 2017 5:32 pm

Hi
I would say carbon brushes for electric motors
We had boxes and boxes of different sizes at work
All went in the skip as no longer used on the newer
electric motors
Bill

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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by detectorman5050 » Sat Dec 16, 2017 8:55 pm

@Bsabill, thanks for the idea, but I'm still tempted to put my money on something to do with printing. I've noticed that on these little blocks I find, they have numbers, and some form of description. I am not sure they would so that with individual carbon brushes?
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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by detectorman5050 » Sat Dec 16, 2017 9:02 pm

Phil2401 wrote:
Sat Dec 16, 2017 1:26 pm
My eyesight isn't that good, but could the lettering be L20mm? Unlikely since that doesn't relate to the actual dimensions but just a thought.
Hi Phil, I've looked at it under a very strong light, and it doesn't seem to say that. It start with L, then there is a tiny 2 or 'g' followed by Prim. The font is interesting, and I'm guessing it might be roughly 1930's onwards.
Last edited by detectorman5050 on Sat Dec 16, 2017 9:54 pm, edited 1 time in total.
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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by DiOz » Sat Dec 16, 2017 9:18 pm

Various metal graphite carbon brushes...

Image

http://www.bhattandbros.com/Carbon_Brush.htm
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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by detectorman5050 » Sat Dec 16, 2017 9:53 pm

@Dioz. Thanks, I looked the graphite carbon brushes up on Google images. The material looks very similar to what I've got. However, mine is thinner, and I cannot see any sign wires were attached to the end.
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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by the barnacle » Sun Dec 17, 2017 10:11 am

out of a lead battery or motor ::g

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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by iainmcdonald » Sun Dec 17, 2017 10:23 am

Don't know if it would help at all, but is it not a g after the L?

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Re: What are These Odd Little Slabs of Metal I Keep Finding in Field?

Post by Koala » Sun Dec 17, 2017 11:23 am

L2 Primary is an electrical term but could well be a red herring.


Richard is a font but is this also a red herring


Thought this was going to be easy. That was a red herring :D :D :D

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