“Remember to get vaccinated or a vaccinated person might get sick from a virus they got vaccinated against because you’re not vaccinated.” - author unknown
November 18, 2019, 09:20 AM
mike28w
Just guessing....I wonder if it is a gadget for cattle to scratch their backs ??? I've seen modern devices that are hung in pastures for cattle to walk under and rub against to scratch their backs. ( some of these actually seem to dispense some sort of insecticide)… Just a WAG !!
November 18, 2019, 10:31 AM
Skins2881
Lawn dart?
Jesse
Sic Semper Tyrannis
November 18, 2019, 10:39 AM
gw3971
quote:
Originally posted by blueye: Kidney stone, at least that's what it felt like.
No kidding!!
November 18, 2019, 10:51 AM
BigWhup
quote:
Originally posted by sigfreund: I have never seen anything like it, but my first guess is that it was used for milling/processing something in a rotary tumbler to break it down into smaller pieces. Around where I live in a 19th century mining town we sometimes find small iron balls that were tumbled with ore in … “ball mills” to break it down for further refining. I have one such ball about 2 inches in diameter.
They are actually called grinding balls, made in a ball mill.I previously managed such a facility, made from 1" through 5 1/2" grinding balls. They are still used to today in breaking down and refining ores.
November 18, 2019, 10:56 AM
old rugged cross
midevil catapult weapon!
"Practice like you want to play in the game"
November 18, 2019, 11:03 AM
BurtonRW
quote:
Originally posted by BigWhup:
quote:
Originally posted by sigfreund: I have never seen anything like it, but my first guess is that it was used for milling/processing something in a rotary tumbler to break it down into smaller pieces. Around where I live in a 19th century mining town we sometimes find small iron balls that were tumbled with ore in … “ball mills” to break it down for further refining. I have one such ball about 2 inches in diameter.
They are actually called grinding balls, made in a ball mill.I previously managed such a facility, made from 1" through 5 1/2" grinding balls. They are still used to today in breaking down and refining ores.
Not doubting you for a minute, but when I google "grinding balls", all I see are smooth metal balls. Any idea if there's an online source where I can verify the existence of the antique wooden, iron studded type?
-Rob
I predict that there will be many suggestions and statements about the law made here, and some of them will be spectacularly wrong. - jhe888
A=A
November 18, 2019, 11:05 AM
229DAK
Are the spikes wood or metal (iron)?
_________________________________________________________________________ “A man’s treatment of a dog is no indication of the man’s nature, but his treatment of a cat is. It is the crucial test. None but the humane treat a cat well.” -- Mark Twain, 1902
November 18, 2019, 11:08 AM
sigfreund
If it is a “grinding ball” of some sort, I would expect that it wasn’t intended for breaking down rocky ore material, but rather some other substance, perhaps even plant material. Whatever that material was, it’s quite possible that other methods are used today.
► 6.0/94.0
“I can’t give you brains, but I can give you a diploma.” — The Wizard of Oz
Any dog can be a Guide Dog if you don't care where you're going.
NRA ENDOWMENT LIFE MEMBER
November 18, 2019, 11:28 AM
H&K-Guy
Thermal Detonator
H&K-Guy
November 18, 2019, 11:30 AM
BurtonRW
quote:
Originally posted by 229DAK: Are the spikes wood or metal (iron)?
Iron - same as the band around it.
-Rob
I predict that there will be many suggestions and statements about the law made here, and some of them will be spectacularly wrong. - jhe888
A=A
November 18, 2019, 11:54 AM
BigWhup
quote:
Originally posted by BurtonRW:
quote:
Originally posted by BigWhup:
quote:
Originally posted by sigfreund: I have never seen anything like it, but my first guess is that it was used for milling/processing something in a rotary tumbler to break it down into smaller pieces. Around where I live in a 19th century mining town we sometimes find small iron balls that were tumbled with ore in … “ball mills” to break it down for further refining. I have one such ball about 2 inches in diameter.
They are actually called grinding balls, made in a ball mill.I previously managed such a facility, made from 1" through 5 1/2" grinding balls. They are still used to today in breaking down and refining ores.
Not doubting you for a minute, but when I google "grinding balls", all I see are smooth metal balls. Any idea if there's an online source where I can verify the existence of the antique wooden, iron studded type?
-Rob
Sorry for misleading you, I was referring to the comment by sigfreud relating to the balls he was speaking of, which are smooth steel balls, as you found.
They are typical placed in large tumblers, (think larger than a concrete mixing truck). along with ore. As the ore and balls are tumbled together the ore is pulverized by the balls into a much finer mixture. That mixture is then ran through a process which separates gold, silver and other materials from the mixture.
I don't know what your find is.
November 18, 2019, 11:56 AM
pbslinger
It simulates marriage. You don't put in in your ass, you just imagine if it were there.
I suggested it might be a salesman's sample of a naval contact mine.
LOL.
-Rob
I predict that there will be many suggestions and statements about the law made here, and some of them will be spectacularly wrong. - jhe888
A=A
November 18, 2019, 02:04 PM
Haveme1or2
trebuchet projectile ball !
November 18, 2019, 02:06 PM
Expert308
Early model of the Death Star?
November 18, 2019, 02:15 PM
Krazeehorse
quote:
Originally posted by mike28w: Just guessing....I wonder if it is a gadget for cattle to scratch their backs ??? I've seen modern devices that are hung in pastures for cattle to walk under and rub against to scratch their backs. ( some of these actually seem to dispense some sort of insecticide)… Just a WAG !!
That was my guess.
_____________________
Be careful what you tolerate. You are teaching people how to treat you.
