Very impressive setup saltmarsh.
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Jean, welcome to Tomatoville.
Kentucky Wonder Bush
Tendergreen Green Beans [Bush bean]
Kentucky Wonder [Pole]
Rattlesnake [Pole]
Sultan's Crescent Green [Pole]
All are really nice varieties. I'm going to grow a lot of Top Crop bush beans this year. They are speckled and the pods have a smooth feel to-the-tongue raw and when cooked. Something that some tomato growers try to stay away from is planting tomatoes where beans/legumes were grown the year before. Legumes produce nitrogen as stated in above posts.
Adding too much nitrogen - but at a still safe level can cause tomato plants to grow larger than usual with tons of leaves and very few tomatoes. So, basically, don't plant tomatoes and beans as companion plants, side-by-side, and try not to plant tomatoes where legumes grew the year before.