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- LOGGING & MINING LINKS -
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 Posted: Thu Aug 22nd, 2013 10:02 am
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Alwin
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Found a page of logging in California. Lot of information.

http://www.mendorailhistory.org/index.htm

Alwin

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 Posted: Sun Jan 19th, 2014 09:08 pm
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Ray Dunakin
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I found a great digital book online, "Design of Mine Structures", from 1912:

https://archive.org/details/designminestruc02ketcgoog

A really great reference resource, it has plans and information about various headframes, ore cars, skips, hoist houses, ore bins, coal tipples, etc.

I wish I'd seen this sooner, it would have been very helpful with the headframe I'm currently working on!



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 Posted: Sat Jan 25th, 2014 05:35 pm
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Salada
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Thanks Ray; interesting book & diagrams - some of the maths looks a bit beyond my level !
The 'Safety Hook' is an exact copy of a patented English type, the Ormerod. Perhaps they didn't patent it in the US (unlikely ?).
I had wondered, but was too polite to say so, why you are modelling a '4 Post' headframe. I know they do exist but always struck me as a strange design considering the uni-directional winding/braking forces involved.

Regards            Michael

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 Posted: Sun Jan 26th, 2014 12:30 am
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Ray Dunakin
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The "four post" part of my model is just the beginning, there's more to it than that. It's very loosely patterned after/inspired by, the headframe of the Desert Queen mine in Tonopah, NV:



Last edited on Sun Jan 26th, 2014 12:31 am by Ray Dunakin



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 Posted: Fri Jan 31st, 2014 10:59 am
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Salada
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Thanks Ray, I understand what you are planning now.

Looks like the streak of rust across the shed roof has dripped off the winding cable ?.

Regards                   Michael

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 Posted: Sat Feb 1st, 2014 12:47 am
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Ray Dunakin
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The cable that has dripped rust on the hoist house roof isn't the winding cable. I think it's just a guy wire to help stabilize the headframe.

On this old mine the winding cable is hanging slack and is barely visible between the hoist house and mine. BTW, like many of the mines in the Tonopah area, this one used a type of wire rope called "flat rope", which I'm hoping to model on my headframe if I can find a suitable material.



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 Posted: Sat Feb 1st, 2014 10:21 am
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Brian Wise
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That's a really cool, compact set up. Looks like there was a lean-to addition over the flat-belt driven air compressor in the foreground.

Brian

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 Posted: Sat Feb 1st, 2014 06:42 pm
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Salada
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Ray, you may find the following photos of mine (pun) of interest as you want to model 'flat rope' winding cable:






Note the shape of the sheave wheel.













The cigarette paper packet measures 2 7/8"  x  1" .

Hope this helps.

Regards                                       Michael 

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 Posted: Sat Feb 1st, 2014 09:42 pm
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Herb Kephart
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Ray

See if you can find Chartpac tape for flat rope

Used to be made in all colors and widths, thin mylar with adhesive on one side

Don't know if it is a product of the past, but was used to make bar graphs and the like. Thinnest was 1/64" wide as I recall. Dimensionally stable. We used it for all kind of things at the model shop--but that was in the 60's.

Herb



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 Posted: Sun Feb 2nd, 2014 01:50 am
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Ray Dunakin
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Thanks for the pics! The sheaves are especially helpful. I've seen plenty of flat rope sheaves in Nevada but most of them have "bicycle" spokes, and I'd much rather model these simpler spokes.

I've ordered some flat, 1/8th inch wide braided kevlar that looks like it may be well-suited for replicating flat rope in 1/24th scale.



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