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A Redneck Vacuum Sealer
#1
I received my pressure canner yesterday(Sat) so I'm looking at videos this morning for tips and the like.

I came across this video, american creativity. thought some here might enjoyBig Grin


[youtube]YGHoCLwUheQ[/youtube]
With the Second Amendment saying what it says, Why isn't the Federal Government Suing NY
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#2
That's pretty neat I guess. I guess it would be good if you wanted to seal a few jars at the same time instead of using the Foodsaver attachments to seal each one individually, I may just have to give that a try here.
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#3
I'm confused.

By having a flat round piece of metal laying loosely on top of a jar and "covered" along the edges by the "ring" that gets screwed on loosely, how does that flat lid "seal" onto the glass jar by the action of removing air?

It seems that if air is being "sucked out" of the jar that the flat piece would "lift" rather than "seal".
I guess it has to do with the creation of a vacuum in that entire space, but I've never thought about it before.

Even more confused by how a "peanut jar" can be reused and the screw on lid will seal by leaving it loose.
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#4
I've been told I have a way with words, the wrong way. I'll give this a shot anyhow and hope I don't confuse anyone. I see the concept in my mind as very simple but trying to explain it seems to complicate it, words aren't coming to me to make this sound as simple as it really is.
As long as the rubber seal on the lid is clean and smooth it should work like a champ. When you draw a vacuum on the whole unit you are also removing air from the jar.
(The "vacuum" isn't an absolute vacuum, there is still some air in the jar as well as the canister, it's just at a lower pressure than if it were sitting out in open air).
As you are sucking the air out of the big container the air from the smaller container will be drawn out to equal the lower air pressure of the big container. Imagine air in the jar being pressurized, it would blow right past the lid that is sitting loosely on top of the jar. That's what's happening when you draw the air out of the whole unit, the air in the jar slips right past that lid, flowing toward the lower pressure side of the obstacle. When the air pressure is reduced in the big container as much as it can be reduced, the air pressure in the jar is also reduced to the same level. As soon as you open the valve to let air back into the bigger chamber, the pressure rises quickly. When that happens the air pushes against the lid as it tries to get back into the lower pressure area, (the jar). The sudden rise in pressure outside of the jar should push the lid against the mouth of the jar with enough force to create a seal and prevent air from passing into the jar, thus leaving the jar sealed with a lower internal pressure.

In effect, the lid is lifting while drawing the air out, then it seals when the air pressure around it returns to normal. After that seal is formed is when you tighten the ring on the canning jar or tighten the lid on the peanut jar to lock the lid in place and secure the seal.
There are three types of people in the world:
Those who make things happen,
Those who watch things happen,
And those who wonder what happened.
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#5
I was thinking the same thing. I think you explained it perfectly.
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#6
ExcelToExcel;137466 Wrote:I was thinking the same thing. I think you explained it perfectly.

Well thank you.
It took me a long time to word it so that I was nearly satisfied with it, I'm glad it makes sense to someone.
There are three types of people in the world:
Those who make things happen,
Those who watch things happen,
And those who wonder what happened.
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#7
I would have accepted "witchcraft" as an explanation too.





Big Grin
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