Bandsaw tension assembly

For those who have a 14” saw with or without a quick release attachment.
I am trying to figure out how the tension spring is used in the assembly.
Looking at some parts breakdowns I still cannot figure this out.
Question: is the tension on the wheels, and for that matter on the blade, being applied through the tension spring? Put another way, when the tension is increased, is it applied by way of increasing the compression of the tension spring?
My cheap 10” has no tension spring and is just a bolt pulling up on the yoke that is attached to the wheel hub. It seems to me that a spring there may cut down on some of the vibration.

Thanks all for helping out a confused amateur engineer!

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