I think what you are talking about is a food mill.
This one looks like a basic food mill.
This one looks a bit more unique.
Here is a review of 5 different food mills. I believe you can click on individual ones to get more information.
I will say... my Mom had an old one. The one that I have lets more tomato seeds thru than the one my Mom had. So, sieve size might be something to pay attention to, if you decide to buy a new one.