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Zo Arms

1897 dot penny. Advice needed.

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20 hours ago, Zo Arms said:

Would you be able to re photograph please Bob? I appreciate that you said that it's a difficult operation but I seem to remember doubt cast in a previous thread.

 

I will try to re-photograph, with a fixed camera position, so you can definitely see each dot position with reference to the toothed ring. The only real problem is the reflection that the slab presents, but I will give it a try.

 

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On 5/16/2020 at 7:31 AM, Zo Arms said:

Hi.

Welcome back.

This is a thought only, open to discussion or ridicule, viewed from a carpenters point of view.

Here goes.

Reverse B. Quite happily churning out pennies. It's getting on a bit and a small die crack appears.

You need to prolong its life for a while because the new reverse C die isn't quite ready.

To prevent the crack traveling further, you drill a small hole just in front of it. This will stall the cracks line of travel. Not prevent it. Just stall it.

A perfectly round hole. Or dot. 

Fill the crack in as an added form of strength, clean it off and away you go again. A dot penny.

Hole fills with grease and gunk and becomes the shadow of the dot. You can see it on some 97's in the right light. Can't feel it as raised, but you can make out where it is.

After a while the die crack continues its travel. The dot hole deforms as a result and you're left with Jerry's penny.

But you've achieved your aim. You've prolonged the life of the die. The new reverse C is now ready and production resumes as before.

I'm sure that this theory is full of faults and assumptions but it's food for thought.

Bob.

I vaguely recall reading a similar theory before so you may be onto something - might have been in one of Michael Gouby's books? I really can't remember now.

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Posted (edited)
On 8/1/2020 at 11:40 PM, Mr T said:

I vaguely recall reading a similar theory before so you may be onto something - might have been in one of Michael Gouby's books? I really can't remember now.

Its not a theory its standard engineering practice,

Whats really interesting is my computer says its 17:08 on Friday, but the forum software thinks it is some time on Saturday, 11:40pm. How does that work?

Edited by AardHawk

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4 hours ago, AardHawk said:

Its not a theory its standard engineering practice,

Whats really interesting is my computer says its 17:08 on Friday, but the forum software thinks it is some time on Saturday, 11:40pm. How does that work?

No, it thinks @Mr T is at Saturday 11:40, not you!! Your computer, like mine, appears to be giving the right time.

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The date of Mr T's post is a bit of a giveaway too.

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