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Who Knows This Strange Magnet Set?

09/20/2016 4:58 PM

When clearing an attic, I found the following object. Does anyone know what this is and what it was used.

It is a cylindrical brass cylinder on which a lid sits. The lid is fixed with a spring on the cylinder.

In the cylinder are 7 cavities in which a permanent magnet rod is placed.

There are six small magnets and one larger magnet. The magnets poles are painted red and blue.

Judging from the shape of the magnets, these are likely to be of a type of cast steel.And they were afterwards cut to the correct length. The rod length is exactly 2.5 inches.

The machined surfaces of the brass cylinder as casing outer diameter casing (1 ½ "), support outer diameter (2 ¼") and lid bore (1 ¼ ") appear to be inch sizes, this makes me suspect that the subject is of English or American make.

At the bottom of the cylinder is a logo imprinted it is an oval with RGW as inscription.

Curiously, the base of the cylinder is equipped with four holes to screw the whole on to something. The holes are countersunk 90 °, suggesting that the spring in order to hold the lid, is in the way when mounting.

The object is probably 70-80 years old. The white and yellow measuring rod is in cm. Probably the subject later is painted red.

In annex some pictures.

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#1

Re: Who knows this strange magnet set?

09/20/2016 5:46 PM

Certainly cool .
I'd use it to set myself up as a Quack Doc' and rub the magnets over attractive young ladies to relieve their stress
I mean, I have no idea what they would be used for.
Del

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#2
In reply to #1

Re: Who knows this strange magnet set?

09/20/2016 5:57 PM

Del, shaddup, we need to get a patent on this.

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#3

Re: Who knows this strange magnet set?

09/20/2016 6:09 PM

Looks like the fuel cell for a flux capacitor to me.

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#4

Re: Who Knows This Strange Magnet Set?

09/20/2016 7:08 PM

Maybe they used to correct compass headings on magnetized ships....

https://www.physicsforums.com/threads/degaussing-ships.44622/

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#7
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Re: Who Knows This Strange Magnet Set?

09/20/2016 8:33 PM
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#15
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Re: Who Knows This Strange Magnet Set?

09/21/2016 2:55 PM

yeah.. it even sez row on the bottom.

like row. row. row your boat

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#16
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Re: Who Knows This Strange Magnet Set?

09/21/2016 5:02 PM

Hull degaussing systems would not have employed these unless there was some sort of magnetrometer system to measure any remaining magnetic effect after the degaussing system was employed. The systems were used to de-magnetize the hull to protect against the German's magnetic fuses. The torpedoes were aimed manually but set to run at a depth lower than the hull. The fuse would sense the magnetism of the hull as it approached and when it started to decrease it would explode since it was figuring that it was passing beneath the hull. I sailed on several ships back in the 60's that were built during the war or shortly after WWII that still had the degaussing systems installed. It was easier to leave them in place then to remove them. They had a separate control cabinet due to the amount of DC power needed to activate the system.

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#18
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Re: Who Knows This Strange Magnet Set?

09/21/2016 11:28 PM

I can remember many times steaming up and down the degaussing range in Sydney Harbour when I was serving in ships of the "Grey Funnel Line" (Royal Australian Navy) in the sixties.........I recall it being a right pain in the backside, but a necessary evil in those times.

Of course this is why minesweepers were made from wood......to reduce their magnetic effect, but they still had to go over the degaussing range.

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#5

Re: Who Knows This Strange Magnet Set?

09/20/2016 7:09 PM

That is one strange hunk of metal! The coarsely finished base and the finely machined brass cover indicate to me that it was used some type of magnetic focusing device for some type of early x-ray fluoroscope or high powered RF device like a magnetron. The countersunk mounting holes indicate that it was placed into some type of cavity with the flange at the bottom, while the magnets were removable to allow for shaping the flux field.

Another thought, maybe it was inserted at the bottom of some sort of chemical reaction chamber or sluice for the purpose of trapping any ferromagnetic material to prevent it from moving to the next step in the process. The metal would be attracted to the magnetic field, "stick" to the brass cap, and periodically someone would pop the spring and lift off the cap and the material was easily removed from the now non-magnetic cap.

Gee, maybe it's an early magnetic oil sump plug meant to trap the cast iron chips from the engine sump to keep the lubricating oil clean.

Definitely an interesting find!

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#6

Re: Who Knows This Strange Magnet Set?

09/20/2016 7:23 PM

I'm going to take a really wild guess.

From the fact that it's screwed down and can be opened to arrange the magnets, maybe it's used to correct a ship's magnetic compass by arranging the magnet polarities (or removing some of the magnets).

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#8

Re: Who Knows This Strange Magnet Set?

09/20/2016 9:05 PM

Interestingly the larger and one smaller rod are turned with the blue side up. If you found it that way .....

Looks like you can create a directional field. Given its brass case the use on a ship is very likely.

Maybe check a maritime history museum for similar items.

RGW would be the manufacturer. Any leads on this?

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#9

Re: Who Knows This Strange Magnet Set?

09/20/2016 9:31 PM

RGW magnified looks more like ROW?

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#17
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Re: Who Knows This Strange Magnet Set?

09/21/2016 9:43 PM

Maybe, but cant seem to find anything for ROW either.

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#10

Re: Who Knows This Strange Magnet Set?

09/20/2016 9:56 PM
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#11

Re: Who Knows This Strange Magnet Set?

09/20/2016 10:47 PM

I don't know but it looks fascinating!

I look forward to someone being able to identify it.

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#12

Re: Who Knows This Strange Magnet Set?

09/20/2016 11:17 PM

It looks like a set of magnets for use in a binnacle compass for correcting magnetic deviation. Since it's painted red it probably isn't US Navy since they're generally gray. It probably was for a smaller binnacle like used on a schooner or sail powered craft. It would probably be used instead of the 2 larger soft iron balls used on larger steam powered ships. Try an antique ship chandler like this one http://www.piecesofship.com/compasses.htm Send them a picture it might be worth a buck or two especially if they have a binnacle that needs one.

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#13

Re: Who Knows This Strange Magnet Set?

09/21/2016 2:35 AM

seems experimental Halbach array megnet set.

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#14

Re: Who Knows This Strange Magnet Set?

09/21/2016 10:53 AM

OMG! You found the original Henry set of magnetic standards! Those must be turned in at the Academy of Sciences of Arcane Wisdom!

If you believe that answer, boy, do I have the political candidate(s) for you!

In reality, IHNI, but the answer given seems as good as I can dream up on short notice.

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#19

Re: Who Knows This Strange Magnet Set?

09/22/2016 11:57 AM

@ jdretired I magnified the logo, I think it is RGW

@ spinco I removed the paint, and underneath sits a gray layer (RAL 7040 ?)

After removing the paint, there are remains of a seal on the mounting plate. So it probably was mounted in a water tight way.

Thanks for the valuable information.

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#21
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Re: Who Knows This Strange Magnet Set?

09/29/2016 5:50 AM

A grey layer of RAL 7040 means this is Window grey a color

https://en.wikipedia.org/wiki/List_of_RAL_colors

So this is not helpful I guess.

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#20

Re: Who Knows This Strange Magnet Set?

09/27/2016 4:55 AM

Was Unkown for this topic..soon will make an research on it and will come up with a conclusion..better findings needed.

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