Walking Foot

I purchased a walking foot attachment for my Brother and was delighted
how well it worked. However, after studying exactly how it works, I am
thinking that the placebo effect might has snookered me.

I was under the impression that it was pulling the top fabric through
the machine but it seems that it only goes up and down with the needle
and rides back as the dogs pull from the bottom then rises and springs
back forward.

There is no pulling at all on top. If I put the embroidery plate over
the feed dogs, there is no movement at all.

Is this the way they all work and if so, what good are they?

How about the machines with the walking foot built in?

Thanks,

js

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