strange rubber bung

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soleil d`or

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Whilst cleaning out my chain locker I found a one inch tapered white rubber bung with 6 holes in it (not right through) with a stainless u bolt through the middle which can locate in any of the holes.
I guess its some type of plug. Cannot find it on line.
What is its specific purpose.
 
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Doesn't look like a bung function to me.
Looks like if the rubber plug was fixed into something, the angle of the unknown device attached by the U-bolt could be set and locked by the ring and washer at the back.
Think what the U-bolt could fit round (wheel spoke?) and take it from there.
Or else put it back, mentally tagged "red herring" for the next owner to worry about.
 
I have done some puzzling and I think I've gottit...otherwise I would not be able to fall asleep tonight..:eek:
....Yes it is a bung...but not an ordinary bung.:D
It very probably functions in the following manner:~
When you pull out the u bolt, at the back of the bung there is a cranked finger. The amount of travel of this finger is limited by the preventive washer at the back. The bung operates into a sink (a cylindrical depression) at the bottom of which there is a slot in which the cranked finger fits into. There is just enough clearance to pull out the u bolt sufficiently just to turn it and for another hole to be selected thereby locking it in place. I should imagine that the space between the retaining washer and the bottom of the bung is spring loaded, or, that the surface with which the finger engages is itself spring loaded, thereby effecting a locking action.
Very arcane design but it ought to function...:D
...for a water tank perhaps ?
 
Bung

If the above confuses you as it did me (I am easily confused)
Some bungs use a locking bolt mechanism through the bung which squeezes the 2 flat planes together so expanding the middle tubular part to make a good lock in place. Do your bolts do this? I can't imagine why all the holes. good luck olewill
 
William_H said:
If the above confuses you as it did me (I am easily confused)
Some bungs use a locking bolt mechanism through the bung which squeezes the 2 flat planes together so expanding the middle tubular part to make a good lock in place. Do your bolts do this? I can't imagine why all the holes. good luck olewill
Click to expand...

Yes ollie, but those are fitted on thermos flasks and simple.
This one is unnecessarily complicated and I cannot work out why as many as 6 holes...except...perhaps...to expand the options...:confused:
 
If the holes were different depths (still waiting for feedback on that one) then selecting a hole would set the depth of whatever is attached to the gizmo at the back, which might be used to lift something a set amount - haven't a clue what, btw (early liquid level sensor perhaps ?), but I'd have thought there would have been markings on the bung to display the setting.

Perhaps it's simply an IQ test ?
 
Could it just be a bung where the hook for removing it is slid into one of the holes to tidy it up and prevent it snagging anything ?
Pete
 
I believe that you have hit the nail on the head.
The bung is wider at the end with the holes/u bolt in so must be pulled up by the ring at the top and then locked off by pulling up into any of the holes thereby slightly expanding the bung. The holes are all the same depth.
It must work the opposite way round to a conventional plug but why and where.
There are no marks on it but it is a professionally made bit of kit
 
It could be one of the component of a dinghy furler drum, where the tack cringle is tied to.

For example with a hooked sail (one without halyard, which has a hook on the mast), the trimming is done at the tack: when the rubber thingy is pulled down, it expands and locks into a wider circular groove, permitting furling/unfurling (as the jib is all open or all furled, it does not have to bear any significant load); when the tack rope is released, the metal hook lifts and the tack is released, allowing to store the sail

does it make sense ?

(I am sure I have already seen a thing like that but cannot remember where)
 
Could this be a device to replace the paddlewheel log whilst underway or afloat,even during the winter months during lift-in/out to prevent damage to the paddle wheel log by strops.

As it is white in colour could it be a domestic item for refrigeration,heads, or shower tray units?

ianat182
 
Many years ago I saw similar things used by BT to seal joint enclosures. Small cables pass thro the holes & are joined as required, then the whole lot is inserted into a closed cylinder & the bung forms a seal within the open mouth of the cylinder. Unused holes were sealed by small bungs. ISTR metal plates with similar holes either side that were thro bolted to squash the bung & make a waterproof seal. Ours were black, but I suppose it could relate to CTV networks.
 
Might the holes be there to make it more compressable? (Deformable)

Faint old memory of Mini racers drilling the Moulton rubber springs to soften the rate, after lightening the cars.
 
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